TerraLiner:12 m Globally Mobile Beach House/Class-A Crossover w 6x6 Hybrid Drivetrain

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Unfortunately, I could only find two videos of the IVECO Ellisup; skip ahead 1 minutes 30 seconds into the second video:






So in compensation, here are some photos:



MSA_6375.jpg ELLISUP_ (2).jpg MSA_6613.jpg
MSA_6341.jpg ELLISUP_ (1).jpg MSA_6438.jpg
MSA_6423.jpg



For high-resolution versions, see http://www.iveco.com/en-us/press-ro....aspx?NodeId=381&Title=Busworld Kortrijk 2013 .

In many ways the IVECO Ellisup is my favorite. Sure, it doesn't recharge via super-cool under-pavement induction, as per Bombardier. But rather, as per Volvo, the Ellisup recharges with an old-style pantograph that extends up from the roof. But the Ellisup's electricity storage is an innovative combination of lithium-ion batteries and super capacitors; it travels 8 to 10 km before it needs to recharge; it recharges super-fast, in just 4 minutes; the windows are extra-large and provide panoramic views; LED mood-lighting changes with the weather, yellow if it's raining, blue if it's not; and all of the motors are hub motors....

thjakits
, you especially should like that last detail. Using hub motors allowed the Ellisup's designers to lower and widen the floor, because there was no longer any need to accommodate axles or a drive shaft. IVECO then claims that overall passenger capacity increased 20 % in comparison to a more conventional bus of comparable size.

I also love the Ellisup's design, and I love it for the same reason that I've loved all the designs that I have praised throughout this thread: the Ellisup is curvilinear on both the outside and the inside. And on the inside it incorporates a great deal of wood, but in a "modernist" sort of way, successfully combined with other design elements that appear to be robust aluminum. This is very advanced, sophisticated interior design. Of course the Ellisup is a transit bus, not an expedition motorhome, and it has ridiculously small wheels, because tram-like transit buses don't need bigger. But along with the videos documenting other recent electric trolley bus developments, the Ellisup demonstrates just how quickly and radically various kinds of electric technologies are changing the engineering parameters of even the most conventional vehicles, and how those engineering changes in turn affect design possibilities.

Notice one detail in particular: like MAN's Lion City Hybrid, the Ellisup and the Volvo 7900 mount their batteries and/or super-capacitors on the roof, not on the floor. In the case of the MAN Lion City Hybrid, the product literature explains that roof-mounting allowed creation of a more effective cooling system for the batteries. Recall that one of the reasons why the DesignLine buses tested in New York City failed, is because the battery packs were located in the rear, near the Capstone turbine, and one bus sold to the Charlotte Douglas International Airport in North Carolina spontaneously caught fire when (allegedly) the batteries overheated -- see post #504 and following, at http://www.expeditionportal.com/for...igid-Torsion-Free-Frame?p=1652358#post1652358 . So batteries and super-capacitors clearly have "temperature issues" that need careful consideration.

On the other hand, Landrover is now selling a hybrid Rangerover with batteries mounted in the floor. So if Landrover can mount batteries there, theoretically the TerraLiner could do so as well. But just thought I should "red-flag" the roof-mounting of batteries that we see in the Lion City Hybrid, the Volvo 7900, the Ellisup, and a number of other similar buses. For instance, the following is electric trolley bus is made by Van Hool, and used in Milan -- again, see http://www.trolley-project.eu/filea...lleybuses_-_Main_Features_and_Experiences.pdf . It is "dual mode", meaning that it can also operate independently of the overhead catenary system of electric wires, because it has a diesel motor, a 100 KW generator, and super-capacitors. Notice how the super-capacitors, circled in orange, are mounted on the roof:



ATM_Milan_Trolleybuses3_-_Main_Features_and_Experiences.jpg



In any case, these videos make it clear that Proterra is not the only game in town, and even less so Brighsun. In fact, once big industry names like Volvo, Bombardier, and Iveco start entering a given transportation arena, it becomes all that much more likely that start-ups like Proterra and Brighsun will fail. Competing against Volvo, Bombardier, or IVECO would be most daunting indeed. And against IVECO especially, because IVECO is a comparatively low-cost producer, and IVECO has lots of experience with electric trolley bus design, manufacturing, and real-world implementation.

So too the smaller, niche markets for all-electric vehicles are already occupied. For instance, Tecnobus, an Italian company, has been producing a small all-electric bus for over 20 years, and has sold real-world vehicles (as opposed to mere vaporware) throughout Europe -- see http://www.tecnobus.it/home/en/prodotti.html , http://www.tecnobus.it/home/en/il-nostro-mercato.html , and http://www.tecnobus.it/home/en/rassegna-stampa/index.php .


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4. IVECO: abundant real-world experience with advanced all-electric design


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IVECO seems worth further looking into.

Bombardier is more of a rail and aerospace specialist, selling products like monorails, people movers, and subways -- see http://www.bombardier.com/en/transportation/products-services/rail-vehicles.html . Whereas IVECO makes conventional intercity and transit buses just like MAN. And like MAN, IVECO has been exploring hybrid diesel-electric, CNG, and fuel-cell solutions for inter-city buses for quite a while -- see http://www.iveco.com/corporate-en/company/pages/iveco-bus-innovation.aspx , http://www.iveco.com/corporate-en/company/pages/electric-vehicles.aspx , http://www.iveco.com/Corporate-en/Company/Pages/Hybrid-vehicles.aspx , http://www.iveco.com/corporate-en/company/pages/iveco-vision.aspx , http://www.iveco.com/corporate-en/company/pages/iveco-dual-energy.aspx , http://www.iveco.com/Corporate-en/Documents/Leaflet EV_Final.pdf , http://www.iveco.com/Corporate-en/Documents/IVECO CORPORATE EN_Duale Energy/Dual_Energy_Eng.pdf , http://www.iveco.com/Corporate-en/Documents/IVECO CORPORATE EN_Duale Energy/Dual_Energy_Deu.pdf , https://www.youtube.com/watch?v=CwEB6-s1PKc , and http://www.iveco.com/corporate-en/company/pages/csst.aspx :



IRisbus_TWG_lyon1.jpg



Furthermore, unlike MAN, IVECO does manufacture and sell an all-electric, battery-powered, mid-sized, circa 40-passenger bus called the "Europolis" -- see https://en.wikipedia.org/wiki/Irisbus_Europolis , https://it.wikipedia.org/wiki/Irisbus_Europolis , https://translate.google.co.uk/tran...tps://it.wikipedia.org/wiki/Irisbus_Europolis , https://fr.wikipedia.org/wiki/Irisbus_Europolis , https://translate.google.co.uk/tran...tps://fr.wikipedia.org/wiki/Irisbus_Europolis , http://www.transbus.org/construc/iveco_europolis.html , https://translate.google.co.uk/tran...ww.transbus.org/construc/iveco_europolis.html , http://cptdb.ca/wiki/index.php?title=Irisbus_Europolis , and http://www.busbusnet.com/portal/theforum/index.php?action=media;sa=item;in=2884 :



IRisbus_TWG_lyon3.jpg


[video=youtube;1rLBnlCadqc]https://www.youtube.com/watch?v=1rLBnlCadqc [/video] [video=youtube;Jp1g09ML4m4]https://www.youtube.com/watch?v=Jp1g09ML4m4 [/video]
[video=youtube;NUdx3SIajdI]https://www.youtube.com/watch?v=NUdx3SIajdI [/video]



I am certain that the IVECO Europolis buses shown in the above videos circulating in Lyon, are all-electric. But I am not so certain about the buses in Rome and the Veneto. They sound electric, but they could also be hybrid, because the Europolis comes in hybrid as well as standard diesel configurations, too.

In Rome there are most definitely all-electric buses now circulating in the ancient historical center. But these are not IVECO Europolis buses. Rather, they were manufactured by Tecnobus, another much smaller Italian company, already referenced in the previous post. Again, see http://www.tecnobus.it/home/en/prodotti.html , http://www.tecnobus.it/home/en/il-nostro-mercato.html , and http://www.tecnobus.it/home/en/rassegna-stampa/index.php .

For a time during 2014, all electric bus service in the center of Rome was suspended because of problems with the batteries, which were guaranteed for five years, but only lasted three, and so Rome's transit agency, ATAC, was locked in litigation with Tecnobus. More recently service seems to have been restored on some routes, although not all -- see http://www.pbase.com/isolaverde/electric_buses , http://m1.i.pbase.com/o6/85/449985/1/141350031.fgfFb6Go.elect.jpg , http://www.wikispesa.it/Atac_-_Bus_Elettrici_(Roma) , https://translate.google.co.uk/tran.../www.wikispesa.it/Atac_-_Bus_Elettrici_(Roma) , http://www.leggo.it/NEWS/ROMA/roma_...no_ira_degli_utenti_atac/notizie/604151.shtml , https://translate.google.co.uk/tran...no_ira_degli_utenti_atac/notizie/604151.shtml , http://www.06blog.it/post/7671/atac-i-nuovi-minibus-per-le-vie-del-centro , https://translate.google.co.uk/tran...ovi-minibus-per-le-vie-del-centro&prev=search , http://www.ideegreen.it/pullman-elettrici-24739.html , and https://translate.google.co.uk/tran...www.ideegreen.it/pullman-elettrici-24739.html , http://www.virdrinksbeer.com/page35.htm , http://rometour.org/rome-electric-buses.html , http://www.tripadvisor.co.uk/Locati...178-Enjoy_Rome_Rome_Bus_Tours-Rome_Lazio.html , https://www.rometoolkit.com/transport/rome_bus.htm , http://www.atac.roma.it/page.asp?p=18 , http://www.atac.roma.it/files/doc.asp?r=3 , http://www.atac.roma.it/files/doc.asp?r=2 , http://www.bb-rome.com/roma_centro_trasporti.html , and http://www.bb-rome.com/roma_centro_trasporti_elettrici.html .

Rome now wants to expand its fleet of electric buses, but this time around it may buy Chinese instead of Italian -- see http://www.iltempo.it/roma-capitale...-i-bus-elettrici-fabbricati-in-cina-1.1389994 and https://translate.google.co.uk/tran...-i-bus-elettrici-fabbricati-in-cina-1.1389994 .

Most importantly, because so many Italian cities have maintained their electric trolley systems, IVECO has a deep practical experience with trolleys, whereas MAN has nothing of the kind. See especially two IVECO presentations, available as PDFs on-line, in which IVECO reviews its long-standing competence in electric trolley buses and trams, at http://www.tbus.org.uk/Grand_Irisbus2.pdf and http://www.trolleymotion.eu/www/uploads/tx_sbdownloader/IRisbus_TWG_lyon.pdf . IVECO's electric trolley bus products are called the "Cristalis" and "Civis" -- see https://fr.wikipedia.org/wiki/Irisbus_Cristalis , https://translate.google.co.uk/tran...tps://fr.wikipedia.org/wiki/Irisbus_Cristalis , http://www.transbus.org/construc/irisbus_cristalis.html , https://translate.google.co.uk/tran....transbus.org/construc/irisbus_cristalis.html , http://www.transbus.org/construc/irisbus_cristalis.html , http://www.transbus.org/construc/irisbus_cristalis_etb12.html , https://fr.wikipedia.org/wiki/Irisbus_Civis , https://translate.google.co.uk/tran....wikipedia.org/wiki/Irisbus_Civis&prev=search , http://www.transbus.org/construc/irisbus_civis.html , https://translate.google.co.uk/tran.../www.transbus.org/construc/irisbus_civis.html , and http://cptdb.ca/wiki/index.php?title=Irisbus_Civis .

In the the first PDF review of IVECO's line of electric trolleys, we learn that the Cristalis trolley bus has two 80 KW hub motors, a 65 KW APU, and a low floor. The only real difference between the Cristalis and Civis trolley buses, is that Civis has a central driving position, and optical guidance provided by Siemens:



IRisbus_TWG_lyon1.jpg IRisbus_TWG_lyon2.jpg



In the second PDF it becomes readily apparent that "Ellisup" concept trolley-bus shown above is not some kind of wild design departure for IVECO. Rather, the Ellisup strongly resembles the trolley buses currently operating in Lyon, Milan, Bologna, and elsewhere. The Ellisup is really just a slightly-more-than-incremental design evolution, and the resemblance to the Cristalis is clear. When I realized this I was a bit surprised, because the Ellisup is such a terrific and beautiful concept vehicle. Its design parents now operating in Lyon and elsewhere are no less so:




Grand_Irisbus21.jpg Grand_Irisbus22.jpg Grand_Irisbus23.jpg
Grand_Irisbus24.jpg Grand_Irisbus25.jpgGrand_Irisbus26.jpg



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Grand_Irisbus27.jpg Grand_Irisbus28.jpg Grand_Irisbus29.jpg
Grand_Irisbus30a.jpg Grand_Irisbus31.jpg Grand_Irisbus32.jpg
Grand_Irisbus33.jpg Grand_Irisbus34.jpg Grand_Irisbus35.jpg
Grand_Irisbus36.jpg




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5. Silence as an central element in TerraLiner Design


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Here is a gallery of videos, which should convey just how elegant and silent IVECO's electric trolleybuses are, both inside and outside:



[video=youtube;NYLWyBOGBpw]https://www.youtube.com/watch?v=NYLWyBOGBpw [/video]
[video=youtube;dBJM1qJv7Ig]https://www.youtube.com/watch?v=dBJM1qJv7Ig [/video] [video=youtube;6kpTDG5A7-c]https://www.youtube.com/watch?v=6kpTDG5A7-c [/video]
[video=dailymotion;xkluoo]http://www.dailymotion.com/video/xkluoo_trolleybus-irisbus-cristalis-etb18-de-la-future-ligne-c2-tcl-en-essai-et-marche-a-blanc-a-rillieux-s_lifestyle[/video] [video=youtube;ihsVX-yTv1I]https://www.youtube.com/watch?v=ihsVX-yTv1I [/video]



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[video=youtube;munix6OtM4Y]https://www.youtube.com/watch?v=munix6OtM4Y [/video]
[video=youtube;4tP0s7MM5Zg]https://www.youtube.com/watch?v=4tP0s7MM5Zg [/video] [video=youtube;Mdc0ehgRGj0]https://www.youtube.com/watch?v=Mdc0ehgRGj0 [/video]
[video=youtube;jFePPadMOi0]https://www.youtube.com/watch?v=jFePPadMOi0 [/video]



These super-modern IVECO trolley-buses are certainly beautiful; much more beautiful than the all-electric trolley buses that I rode as a kid in Toronto -- again, see https://en.wikipedia.org/wiki/Toronto_Transit_Commission_bus_system , http://transit.toronto.on.ca/trolleybus/9005.shtml , http://transit.toronto.on.ca/trolleybus/ , and http://transit.toronto.on.ca/trolleybus/9003.shtml . And gosh, they sure are quiet!

I posted so many videos because -- and this may sound strange -- I found myself really loving the sound that these electric trolley buses make. Prior to the advent of hybrid as well as pure-elecrtic vehicles such as the Tesla, one did not tend to think of sound as a design element in trucks or cars. Sure, engineers have been constantly working to reduce the noise of the ICE, the internal combustion engine, and they've been inventing new ways to sound-proof cars interiors and COE cabs. At the other end, some vehicles like high-end sports-cars are almost deliberately designed to be noisy, generating a terrific racket.

However, although I am a transportation designer and I do love sports-cars, there is no question that the ICE vehicles have proven an audible plague. Just spend some time living for a few months in a city like Venice, a city without cars; or spend some time on an island like Monte Isola in the center of Lago D'Iseo, an island that has banned cars -- see https://en.wikipedia.org/wiki/Monte_Isola , https://it.wikipedia.org/wiki/Monte_Isola , http://www.monteisola.gov.it/pages/home.asp , and https://en.wikipedia.org/wiki/Lake_Iseo . When one returns to the mainland, the omnipresent noise of cars and trucks is striking, and one realizes that it's simply awful. A world without the noise of ICE vehicles, would be a much better world.

So when watching these videos, I kept thinking, "The TerraLiner should sound the same."



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6. Two Excellent Summaries of Recent Developments in Electric and Hybrid Bus Technology


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At this point I must thank you, thjakits, because it seems that researching electric trolley buses was the key to finding exactly the kinds of PDFs that I have I've been trying to find for some time, PDFs that summarize the current state-of-play of all-electric as well as hybrid bus technology. There are so many different manufacturers in this market, that just reading one random article article after another quickly gets confusing. But happily others have covered the same ground, and have produced two PDFs available on-line that map the entire industry. One is a bit more recent (2014), and the other a bit older (2010) -- see http://www.ferpress.it/wp-content/uploads/2014/01/07_GONZALES.pdf and http://www.finpro.fi/documents/10304/8ebf0d65-0855-4902-8f6d-1d4c5dc23c27 . These are so good and so useful, that they seemed worth posting in full, because PDFs do disappear from the web, whereas -- one hopes -- ExPo will last forever!! :wings:

Here is the first, very recent PDF (2014):



07_GONZALES1.jpg 07_GONZALES2.jpg 07_GONZALES3.jpg
07_GONZALES4.jpg 07_GONZALES5.jpg 07_GONZALES6.jpg
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And here is the second PDF. It is much more "complete" than the first, much more like a comprehensive report, and has an excellent map that pinpoints the major players in electric and/or hybrid for buses in Europe:



Finpro_Electric_Hybrid_Buses1_Overview_2010.jpg Finpro_Electric_Hybrid_Buses2_Overview_2010.jpg Finpro_Electric_Hybrid_Buses3_Overview_2010.jpg
Finpro_Electric_Hybrid_Buses4_Overview_2010.jpg Finpro_Electric_Hybrid_Buses5_Overview_2010.jpg Finpro_Electric_Hybrid_Buses6_Overview_2010.jpg
Finpro_Electric_Hybrid_Buses7_Overview_2010.jpg Finpro_Electric_Hybrid_Buses8_Overview_2010.jpg Finpro_Electric_Hybrid_Buses9_Overview_2010.jpg
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7. Mercedes no longer interested diesel-electric hybrid buses?


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Note that Mercedes, unlike MAN, no longer seems to be much interested in hybrid diesel-electric buses. A while back, in 2008, Mercedes developed a diesel-electric version of its Citaro transit bus -- see http://cptdb.ca/wiki/index.php?title=Mercedes-Benz_Citaro_G , http://www.treehugger.com/cars/citaro-hybrid-bus-wins-2008-dekra-environmental-award.html , http://www.greencarcongress.com/2008/01/mercedes-benz-c.html , http://www.autoblog.com/2007/05/21/mercedes-benz-introducing-new-series-hybrid-bus/ , https://media.daimler.com/dcmedia/0-921-1136865-1-1194918-1-0-0-0-0-0-0-0-0-1-0-0-0-0-0.html , http://media.daimler.com/dcmedia/0-...1-1216602-0-0-12637-854946-0-1-0-0-0-0-0.html , https://www.facebook.com/media/set/?set=a.192761490876887.1073741854.177582545728115&type=3 , and https://en.wikipedia.org/wiki/Mercedes-Benz_Citaro :






But on the web there is very little recent information about this bus, perhaps because Mercedes did not sell that many. As of 2013, Mercedes had sold just 101 units -- see http://www.mercedes-benz.mu/content...e/buses_world/update/news_2013/stuttgart.html . This bus still seems to be in production, but perhaps it is simply not a major focus for Mercedes. Mercedes also seems to view the diesel-electric Citaro as merely a "step" along the road to fuel-cell hybrid buses -- see http://www.gizmag.com/mercedes-benz-citaro-fuelcell-hybrid-bus/13390/ , http://www.mercedes-benz.mu/content...e/buses_world/update/news_2013/stuttgart.html , and https://www.daimler.com/dccom/0-5-1228969-1-1401155-1-0-0-1401206-0-0-135-0-0-0-0-0-0-0-0.html .


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In North America Mercedes sold hybrid diesel-electric buses under the "Orion" brand, but the brand was discontinued in 2012 -- see https://en.wikipedia.org/wiki/Orion_International , http://cptdb.ca/wiki/index.php?title=Orion_International_'Orion_VII' , http://cptdb.ca/wiki/index.php?title=Orion_Bus_Industries_'Orion_VII' , http://transit.toronto.on.ca/bus/8509.shtml , and http://transit.toronto.on.ca/bus/8522.shtml . This is extremely interesting, because at one point Mercedes seemed to dominate diesel-electric bus sales, with New York purchasing hundreds, and with thousands of Orion hybrid buses operating in North America -- see http://www.emercedesbenz.com/Oct05/11MercedesLargestHybridElectricBusOrder.html and https://media.daimler.com/dcmedia/0-921-911857-1-1216526-1-0-0-0-0-0-0-1549054-0-1-0-0-0-0-0.html :








The Orion's diesel-electric drive-train was developed in cooperation with BAE systems, which is arguably the biggest "player" in hybrid bus drivetrains -- see post #2129 further along in the thread, section 50, at http://www.expeditionportal.com/for...w-6x6-Hybrid-Drivetrain?p=1974540#post1974540 .

There is a particularly sobering article about hybrid buses at http://news.thomasnet.com/IMT/2013/07/18/nyc-decides-diesel-buses-are-cleaner-than-hybrids , which sums up the disillusionment that now seems to have set in regarding diesel-electric serial-hybrid buses. So much so, that New York is no longer buying new hybrid buses, and has concluded that on many routes traditional diesel buses with newer engines that meet more recent emissions standards, are actually more "green" than older hybrid buses. In Manhattan, where the bus-travel distance between stops is typically very short, serial hybrids still make sense because of regenerative braking. But on longer suburban routes many cities now seem to be switching back to traditional diesel buses. It's such a good article, that it deserves to be quoted in full:


NYC Decides Diesel Buses Are Cleaner than Hybrids

By David Sims
July 18, 2013


Back in 2009, The New York Times proudly reported that New York City was operating “by far, the nation’s biggest fleet of hybrid buses, which run on electricity and diesel fuel, with nearly 1,000 in all five boroughs, most in Manhattan.”

In the mid-1990s, said Joseph J. Smith, senior vice president for the department of buses for the MTA New York Transit Authority to The Times in 2009, the city was looking for ways to clean up its bus fleet. After rejecting buses that ran on compressed natural gas for being way too pricey, in 1998, the transit authority bought 10 hybrid-electric buses at a cool million bucks each.
[ Also see http://www.nrel.gov/docs/fy05osti/36801.pdf ]


Mean Distance to Failure.

Things went swimmingly:
“By 2001, the city had ordered another 125 and subsequently bought hundreds more,” the Times wrote, adding that “today, New York has the largest fleet of hybrid buses of any city in the country -- 850, out of a fleet of 4,500.”

According to the International Business Times, New York’s bus fleet comprises
“14 different bus models, including the Orion VII, which is manufactured by Orion International at facilities in Mississauga, Ontario, and Oriskany, N.Y.”

After extolling the benefits in cleaner air and quieter buses in the city, the Times threw in the observation that
“the hybrid buses are easier to fix -- and most important, don’t break down as often, which the department measures as ‘mean distance to failure,’” or MDF.

That MDF turned out to be approximately four years.


And Things Went Fine, Until...

According to the New York Post, New York City’s MTA (Metropolitan Transit Authority)
“hasn’t purchased an electric-diesel hybrid bus in three years, and as many as 389 -- 23 percent of all its hybrids -- could be retrofitted with new diesel engines soon.”

One reason for the switch might be that two hybrids burst into flames in 2009. It could be because pranksters have discovered the switch one can throw on the side of the bus to shut it down in mid-service. But mostly, it’s that they simply haven’t worked as advertised.

“An insider” told the Post that “maintenance workers constantly have to repair hybrid engines. The electric-traction motors are burning out. They’re so expensive to replace that it’ll be cheaper to stick a diesel engine in there.”

And indeed, the Post reported that a July 2012 contract between the MTA and Indiana-based engine manufacturer Cummins Inc.
“confirms that the MTA is evaluating how to convert hybrid buses to a diesel-engine-only application.”


More Diesel Engines = Cleaner Air. Really.

Ironically, the switch back to diesel engines could mean cleaner air in New York. Henry Sullivan, the MTA’s chief maintenance officer for buses, said that the hybrids the MTA runs conform to 2004 Environmental Protection Agency emission standards. The new diesel engines, he told the Post, conform to stricter 2007 standards:
“When we first went with the hybrid in 2004 that was the way to go. The diesel is better than the hybrid now.”

MTA spokesman Charles Seaton also observed that
“in high-speed operation,” diesels “work better.” This appears to be the major factor in the decision to switch back to diesels, since five-year warranties on 100 hybrid buses are about to expire, The Post reports, “which means repairs to the buses’ engines will no longer be covered by the manufacturer,” and the MTA would have to pick up the hefty tab.

As the IBT wrote, hybrid city buses are really made for
“intense stop-and-go routes where the average speed is 8 miles per hour.” Such as Manhattan. And the city’s keeping hybrids there. But “in situations where buses travel longer distances at higher speeds, the hybrid system is less useful because the lithium ion battery harvests power from when the vehicle brakes and when the bus is coasting,” the IBT explained, which is why they’ll be fine for Manhattan, where buses “travel much slower and brake more often than the buses in the outer boroughs.”


Hybrids Losing Their Luster?

New York’s experience is similar to that of other cities experimenting with hybrid buses around the world. DieselNet, perhaps a bit too happily, wrote recently that
“Fuel consumption in hybrid buses is very sensitive to the test cycle, as it depends heavily on regenerative braking.” Unfortunately, most cities aren’t built for hybrids.

“Transit agencies in a number of cities became disillusioned with the real-life fuel efficiency of hybrids -- especially so when the buses were operated on suburban routes with fewer stops,” DieselNet wrote, adding that colder cities such as Toronto and Ottawa also discovered they had to replace the lithium-ion batteries more often than they were expecting to, at about $60,000 per battery.

CBC News
reported last October that Ottawa is so disappointed in its hybrid bus fleet, what with fuel costs being millions of dollars more than expected, that
“the city's draft budget for 2013 includes $550,000 for a pilot project to rip out the hybrid electric/diesel engines and replace them with regular diesel engines.”

The city runs 177 hybrid buses, and estimates retrofitting would cost about $75,000 per bus, which comes to a cool $13 million. New York would pay about the same per bus to retrofit their fleet.


Not The End of The Line for Hybrids.

It’s not a death knell for hybrid buses in municipal fleets. Used correctly, in the right situation, they can work well. In Adelaide, Australia this March, Minister for Transport Services Chloë Fox launched a new fuel-efficient hybrid electric-diesel bus for the Central Business District.

Fox noted at the time of the announcement that
“The trial on the Free City Loop involves short distances and frequent stops which makes it particularly suitable for this type of vehicle... The more the bus brakes, the less diesel-generated power is required. That is why the Free City Loop is the ideal operating environment for a hybrid bus.”

Actually there’s no telling what problems could crop up with hybrids. The Voice of Russia, UK Edition, reports that Londoners
“have been sweltering as temperatures soar because The New Bus for London, the greenest diesel-electric hybrid bus in the world, which costs £354,000 each, has no opening windows upstairs, leaving passengers in temperatures of over 30 degrees C.”

The Mayor of London, Boris Johnson, described the buses as offering
“an unparalleled passenger experience."





I guess this explains why Mercedes closed the Mississauga Orion plant, and discontinued the brand.....:ylsmoke:


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biotect

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8. Will a Hybrid TerraLiner be Truly Green?


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Now in the case of a contemporary expedition motorhome, I think one really has no choice but to go hybrid, because that’s the only way to meet current emissions standards and build in the necessary level of redundancy, such that one won’t get stuck somewhere due to lack of parts or a mechanic.

A number of times in the thread, thjakits, you've suggested that a "simple" engine and do-it-yourself engine repair is the solution. Perhaps you didn’t pick up on this, because you joined the thread a bit later, only after page 50. But very early on egn proposed exploring hybrid technologies above all because it seems like the only way to surmount the “repairability” conundrum. Today one can no longer buy a new truck that does not have an engine loaded with complicated electronics. The days of “repair it yourself” trucks are over. Sure, theoretically one could find an old MAN KAT kicking around, and build a super-high-tech fully integrated cab + camper box on top of that. But that seems just silly.

So the only real option is to go in the exact opposite direction, going super-high-tech with the drive train as well. As suggested by both egn and Haf-E, the solution would be to build in lots of redundancy, so that even though a hybrid diesel-electric configuration will prove more complicated, it won’t have any single point of failure that will crash the system. Ergo, two diesel generators, independent battery banks, multiple electric motors, etc. The best place to find both egn's and Haf-E's comments on this subject -- all collected in one convenient place -- is post #503 at http://www.expeditionportal.com/for...igid-Torsion-Free-Frame?p=1652357#post1652357 .

However, the more that I’ve thought about it, the more it seems to me rather naïve to imagine that the resulting system would be any cheaper to maintain than a diesel-powered motorhome, or that it would in truth be more “Green”. I suppose if the TerraLiner gets many more miles per gallon via regenerative braking, as well as by recharging the batteries via solar, it would be more “Green” just because it gets better mileage. But what about the shear amount of energy that will be required to construct this more complex kind of system in the first place?

When reviewing the incredible new BMW i8, the presenter on Top Gear raises exactly this question, about 12 minutes into the video:



[video=dailymotion;x2h9uzy]http://www.dailymotion.com/video/x2h9uzy [/video]



The program begins with a discussion of the traditional petrol-powered BMW M3, and then switches over discussion of the BMW i8 about 3 minutes 15 seconds in. So is the BMW i8 truly “Green”? Near the end of the program the presenter voices his concern:


I’ve always had a fundamental problem with hybrids, and it’s this. We all know that the world has limited resources and we must do all we can to eke them out. But you’re not going to do that if you drive around in a car that has, effectively, two engines. You don’t solve the problem of conspicuous consumption, by using conspicuous consumption. The thing is, though, while you have to rape the world to make a car like the [BMW i8], the benefits of owning one, for you and I, in the here and now, are immense..... Because that car…. that car is staggering; it’s breathtaking.....


In the end the presenter chooses the BMW i8, which amounts to nothing less than inexcusable petrol-head apostasy…..:Wow1: ...Or does he? Watch the video to find out.

All I know is this: if I had the dosh, I’d buy an BMW i8 in a heartbeat. Especially because I could drive anywhere around London that I’d like without having to pay the London congestion charge…..:wings:

Here I should add that the TerraLiner will never be truly and fully “electric” or “pure Green” in terms of CO2 emissions, because it will continue to need a diesel generator for at least a decade to come when glamping for extended periods. The simple fact of the matter is that in places where there is lots of rainfall – or low DNI for an extended period for whatever reason – the solar arrays will not generate enough power to run all camper systems. So a diesel generator will have to kick in as back-up. As I argued in the long, 28-page monster post, even with the largest possible solar array, and most advanced consumer-level solar technology currently avaiable (i.e. not super-expensive gallenium arsenide panels of the kind used in spacecraft….), the TerraLiner’s solar array will still find itself with insufficient DNI to power all camper systems, let alone recharge the batteries for the next day’s driving.

The numbers here are fairly daunting. Even with a really big “spread” of solar, achieved by supplementing Sunpower monocrystalline panels on the roof, with the semi-flexible solar cells made by Alta Devices that safas referenced on the side awnings, I estimate maximum solar output in ideal conditions with high DNI would be roughly 10 KW maximum. That’s still only half the output of the 20 KW diesel generators that now come standard in most American Class-A motorhomes. Typically when the sun is shining brightly and the solar cells are working at maximum efficiency, one will be in the middle of a desert somewhere -- a desert where one would also want to keep the air-conditioning running all day. And perhaps the heater kicking in during the middle of the night, because desert climates tend to be so extreme. So the added power drain from using A/C in the desert would immediately negate the better DNI available there. Whereas when the temperature is more moderate, DNI tends to be more moderate too, and the solar cells will not be pumping out 10 KW at maximum efficiency.

So I figure that powering the TerraLiner’s camping systems consistently and reliably in all weather conditions and all climates via solar + the batteries alone, is still at least 10 – 15 years away, and perhaps as distant as 20 years away, or more.

In short, the TerraLiner will not be truly Green. Perhaps no vehicle really can be, as long as we are still generating so much of our power -- including electric power -- from fossil fuels. But if the TerraLiner were a properly designed hybrid, it will at least be loaded with fail-safe redundancy.



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9. The Hybrid TerraLiner: Serial Hybrid After All, and not Parallel?


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So instead, I read the advent of an all-electric bus that can travel 1004 km on a single charge, as a development that merely makes a good argument for serial as opposed to parallel hybrid, in a long-distance application. thjakits, recall that much earlier in thread, in post #1163 you wrote:


Well - then just forget about the serial hybrid all together, give BOSCH a call and integrate their parallel hybrid!!

At the end it is all about the re-gen braking anyway (...on a long distance vehicle)

Part of the attraction of a serial hybrid is, that you CAN get rid of ALL of the transmissions!!


MAN follows the same argument: that in a long-distance vehicle, what really matters is regenerative braking, and perhaps a bit of a power-assist from an electric motor on steep inclines. According to MAN, in a long-distance vehicle there is not that much to be gained from a serial hybrid in terms of fuel mileage. Although one gets rid of the transmission weight, one adds battery weight, so MAN thinks parallel hybrid is the way to go instead for long-haul trucking.

But everything changes as the batteries become lighter, and their power density improves.

Things are also different for a motorhome with a huge solar array, because when the DNI is excellent, and camper power needs are minimal, the solar array could be charging up the batteries for the next day’s run. A serial-hybrid configuration that’s semi-rechargable by the solar array could thereby significantly improve overall diesel fuel economy, by delaying the point at which the diesel generators kick in, and the TerraLiner becomes a “hybrid” vehicle, instead of pure electric.


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10. Single-charge distance does not matter as much as battery pack power-density


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The devil here is in the details. 1004 km off a single charge is not really saying very much, unless we are told the size and weight of the battery bank, the bus, and the details of the route. But so far Brighsun has released very few technical details about its battery pack or electric motors. On one website I was able to find a snippet of information to the effect that Brighsun's “City Bus” has a 500 kWh battery pack, while its “Tour Coach” – the model presumably used to establish a “single charge” record – has a 518 kWh battery pack. See http://electrichighway.net.au/tag/brighsun/ .

Brighsun does seem like a rather small sort of start-up company, one that talks big, but so far only has a few prototypes, and lots of “plans” – see http://gas2.org/2015/11/01/aussies-introduce-1000-kilometer-electric-bus/ and http://www.abc.net.au/worldtoday/content/2015/s4342220.htm . Brighsun doesn't even seem to have a website yet, but rather, just addresses in either Hong Kong or Shanghai – see http://www.globalwood.org/company/mgodetail.asp?id=833 and http://www.bloomberg.com/research/stocks/private/snapshot.asp?privcapid=312058794 .

Again the contrast here would be with Proterra, a fully operational U.S. company that is willing to be completely up-front about the size of the battery pack tested (257 kwH), a test conducted scientifically and not as a publicity stunt, on Michelin's Laurens proving grounds – see http://www.gizmag.com/oroterra-catalyst-xr-electric-bus-258-miles/39692/ , http://www.proterra.com/the-proterr...rge-at-michelins-laurens-proving-grounds-lpg/ :






Proterra reports only 402 km or 258 miles on a single charge, although it predicts that its 10-pack XR configuration, which provides a total energy capacity of 321 kWh, could achieve 300 mi (483 km) on a single charge. If Brighsun achieved 1004 km on a 514 kWH battery pack, that would indeed be an improvement over Proterra's achievement. But from the point of view of the batteries specifically, it's only an improvement if Brighsun's 514 kWh battery pack weighs quite a bit less than double the weight of the Proterra 321 kWh backpack. And needless to say other factors will affect range, too, like the weight and size of the bus, the route, the weather conditions, etc.

Note that there is a significant difference between such test results, and the products that Proterra currently sells, a difference that Proterra does not try to hide. Proterra's “Xtended Range” battery pack weighs 770 lbs, has a range of just 180 miles, and charges in 90 minutes – see http://www.proterra.com , http://www.proterra.com/product-tech/gallery-2/3d/ , http://www.proterra.com/product-tech/gallery-2/photos/ , http://www.proterra.com/product-tech/gallery-2/videos/ , http://www.proterra.com/product-tech/product-specs/ , http://www.proterra.com/product-tech/product-portfolio/#catalyst , http://www.proterra.com/wp-content/uploads/2015/05/Tearsheets_EnergyStorage.pdf , http://www.proterra.com/wp-content/uploads/2015/05/Tearsheets_ExtendedRange.pdf , and http://www.proterra.com/wp-content/uploads/2015/05/Tearsheets_CatalystPlatform.pdf :



Tearsheets_CatalystPlatform1.jpg Tearsheets_CatalystPlatform2.jpg
Tearsheets_ExtendedRange1.jpg Tearsheets_ExtendedRange2.jpg



Unlike Brighsun, Proterra does talk in its literature about the problem of power density: how the real issue is not single-charge-distance, but rather, how much power a given battery can deliver per kg. And of course for a motorhome like the TerraLiner, where every cubic centimeter matters, the power-per-volume of the battery pack will also be important.

Another big issue for transit operators is charging speed. Proterra sells a fast-charge battery pack that has a much shorter range, just 50 miles between charging events, but that can recharge in less than 10 minutes. For the TerraLiner this is not a big concern, because the TerraLiner is not going to hook up to to fast-charging stations made by Proterra, Brighsun, Bombardier, or whoever, for at least another 10 years. But it's interesting to learn that such a super-fast-charging battery pack now exists. Even 90 minutes is much faster charging than I would have expected possible, albeit the charging occurs at a special station, where the amount of electricity that can be made available is in theory unlimited. The only limit is how fast the batteries on the Proterra bus can absorb the electricity provided. Whereas on the TerraLiner the battery charge rate would also be limited by the amount of electricity available from the solar array at any given moment, or by the amount of electricity produced by the Jenoptik diesel generators, or some other brand of similarly bus-hybrid-specific, lightweight, high-output generators. Clearly, one goal in specifying the size of the diesel generators would also be charging time.

Haf-E, dwh , or egn: if any of you guys are reading this, and feel inclined to do some calculations based on Proterra and Jenoptik literature, by all means please do so, and please share!

A bit like thjaktis, I am now wondering just how powerful the diesel generators need to be (plural: there will be two of them). But I am actually wondering two things:


(1) First, how small could the diesel generators be, if they were given 14 – 16 hours to recharge a 500 or 600 kWh battery pack, a battery pack that would then be run down over the course of 8 – 10 hours of driving, i.e. a distance of roughly 1000 km?

(2) And second, how large would the diesel generators have to be, in order to order to recharge the same 500 – 600 kWh battery pack at its maximum re-charge speed of 90 minutes?


I am not an electrical sort of guy, and I still don't really understand the difference between Volts, Amps, Watts, etc. No doubt I also formed these questions very badly, and did not put them in the way that someone who truly understands electricity, would have put them. But if any of you guys would be willing to give it a go, that would be great!


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11. 1004 km on a single charge is a publicity stunt, and perhaps nothing more


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Now a Melbourne-to-Sydney jaunt is really just a publicity stunt to attract Australian government funding, at a moment when the Australian automobile industry is in crisis. It tells us nothing about whether or not Brighsun has achieved a significant improvement in battery power density.

The following video produce by BrighSun is systematically coy regarding details, and makes only very vague claims using deliberately euphemistic language:






There's also a slightly creepy, Chinese-Confucian-totalitarian tone of moral blackmail in the last few sentences of the video: are you going to be part of our eco-solution? Will you voluntarily participate in our vision of the future? Or will you be part of the problem, one of those uncooperative social elements that we will be forced to steamroll (or exterminate), so that our vision of an inevitable and more virtuous condition of society can be realized? It's going to happen anyway: 30 years from now, all cars, all buses, and all trucks will be electric vehicles that use batteries made by Brighsun. So do you want to participate in our inevitable future, or not?

Only someone with a slightly totalitarian bent of mine could have written the non-tentative script for this video. And so I can't help but think that the writer was Chinese, and not Australian. But I could be wrong. Still, it surprises me that nobody a bit more distant from the company might have taken Brighsun aside and counseled them, “Hey, if you are trying to convince a local state government in a liberal-democratic country like Australia to buy into your vision, don't sound totalitarian, arrogant, or even remotely Chinese.”

The tone in this video is all the more surprising given that Brighsun seems to be just a start-up. It's not Volvo, Bombardier, or IVECO, and it doesn't even have currently available products to sell, like Proterra. Notice how when Bombardier spins a fantasy in which all future vehicles everywhere will be powered by Primemove under-asphalt recharging technology, Bombardier just spins out the fantasy with imagery, not words. Bombardier does not make wild verbal claims to the effect that everyone in the future will get their transportation energy through Bombardier recharging systems. Even though, after watching the Primemove videos, this strikes me as almost plausible, because induction recharging is so much more "slick" and user-friendly than plug-in recharging at a charging station. And at least Bombardier spins its vision using imagery of technology that it currently manufactures and sells, so this fact alone makes its vision all the more plausible. Whereas to simply assert using words that one's company and one's products will become the very center of the transportation universe in the near future...... It's all the more laughable precisely because it's so unlikely.



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12. TerraLiner Design


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As for Brighsun's battery being a genuine TerraLiner-design “game changer”, it's actually not.

All that this “1004 km on a single charge” publicity stunt suggests, is that the TerraLiner should be designed such that the diesel-generator lockers that will be slung down low on the sides can be resized, to allow for the possibility of smaller generators in the future. One wall of the diesel-generator locker, the one abutting a storage locker immediately adjacent, could be designed to be only “semi-permanent”. It could then be moved and the generator-locker made smaller, once newer, more efficient, and lighter battery packs become available, thereby making smaller diesel generators possible.

As for the volume of the space between the chassis frame-rails, i.e. the space that will contain the battery packs, this could be designed to take into account a wide range of possible variations in future battery-pack heights, and then left fixed in terms of length and width. As batteries become lighter and yet more potent per cubic cm of volume, one would simply replace older batteries with newer and better ones. But one would not necessarily change the total volume of the space allocated for batteries. Instead, as batteries improve and the TerraLiner installs successive generations, the TerraLiner's single-charge distance capability would gradually augment from 200 miles to 300 miles to 400 miles, and so on. So there would be no need for a radical redesign of the battery compartment volume every time batteries improve.


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But again thjakits, many thanks for the reference, and for raising the question about how such developments in battery performance might change one's estimate of the size of diesel generators necessary.

And also thanks for bringing this up, because the very fact that companies like Volvo, Bombardier, IVECO, Brighsun and Proterra are now investing millions to develop "pure", all-electric buses with massive and very powerful battery packs, suggests that perhaps serial hybrid will be the best choice for a motorhome after all. And not parallel hybrid.

Clearly, a discussion to be continued. Again, the lesson that I take away from this, is that it's not automatically obvious where a motorhome “fits” in the standard account of hybrid possibilities. Is a motorhome more akin to bus, and should it then be serial hybrid? Or is a motorhome more akin to a long-haul truck, and therefore parallel hybrid would be preferred?

All best wishes,



Biotect


P.S. – I will address the other points that you made in your last two posts in the next series, which I am currently preparing. But as you know, I already a have a substantial “image-posting back-log” that I need to rectify!!!
 
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biotect

Designer
Addendum to the previous post.....


Hey thjakits,

As luck would have it, because I was doing so many searches that included the word "trolley", I chanced upon another superb PDF, produced by the "Trolley Project", an organization dedicated to reviving electric trolley systems, especially in central Europe -- see http://www.trolley-project.eu/index.php?id=111&L=1 trolley bus :



[video=vimeo;38421675]https://vimeo.com/38421675#at=105[/video]



The PDF has the rather improbable title, "Transnational Manual on Advanced Energy Storage Systems" -- see http://www.trolley-project.eu , http://www.trolley-project.eu/index.php?id=18&L=5' , http://www.trolley-project.eu/index.php?id=63&L=1 trolley bus , and http://www.trolley-project.eu/index.php?id=44&L=3 Result: it is not a forum / guestbook . The PDF document has three parts: http://www.trolley-project.eu/filea...nal_Manual_Energy_Storage_Part_0_PP03_BBG.pdf , http://www.trolley-project.eu/filea...nal_Manual_Energy_Storage_Part_I_PP04_TEP.pdf , and http://www.trolley-project.eu/filea...al_Manual_Energy_Storage_Part_II_PP03_BBG.pdf .

For our immediate purposes, the first part seems the most relevant. It basically amounts to a complete survey almost all of the currently available energy storage technologies that might prove applicable to light-rail or trolley-bus applications. The PDF is focused on energy storage to supply the "catenary grids" of trolley systems, i.e. the overhead electric wires that feed electricity to buses or trams. In other words, the intended application is power buffers that sit on the sides of light-rail or trolley lines, not battery banks located inside the vehicles themselves. But even still, it's an excellent survey of the possibilities, has a number of useful comparative diagrams and charts, and it explains the various technologies in very clear and compact way.

Even more useful is another PDF that I came across of an open-access article, dated to 2012, which again surveys the full range of application of electric drive technologies to city buses, including fuel cell and all-electric -- see http://cdn.intechopen.com/pdfs-wm/41487.pdf . It's an article, so it goes into analytic depth, and might serve as a nice complement to the PDFs posted immediately above, #1911 to #1915, which survey the industry and major players. The article runs 40 pages, but still seemed worth posting here in full:



10 images





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