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#46
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Think it's b/c there is so much effort to reduce weight in a hybrid since there is less power? Why are diesels heavier? High compression needs stronger parts? |
#47
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I don't think hybrids are cost effective to begin with - they would need to harnessing all the lost energy from average driving without requiring the motor to charge them.. the battery should not require an engine to survive - only for assistance. fuel price has little to do with it maybe? Marketing is very strategic and tons of cash is spent on just knowing the market. I would bet America is just less receptive to the diesel b/c there prissy nature and inflated sense of self worth. |
#48
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I don't think we're quite there yet. Diesels still have significantly higher compression which alone requires more robust construction.
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2004 VW Jetta TDI (manual) Past MB's: '96 E300D, '83 240D, '82 300D, '87 300D, '87 420SEL |
#49
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I'll try to find the link when I get home. It was on The Car Lounge on VWVORTEX.... Not a concept. It was rated at 69.6 mpg if I recall correctly.
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Sharing my partner's 2012 Forte 5dr SX til I find my next 123 or 126.. - Do I miss being a service advisor ??? |
#50
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It is comparing trains to trucks. If a truck moves 50k pounds of freight @ 8 mpg, and a train moves 2.5 million pounds of freight @ 1 mpg then the train is moving the freight 50 times more efficiently than the truck - or the equivalent of a truck that gets 400 mpg (instead of 8 mpg). Not really a valid comparison since the train runs on steel wheels and a steel surface (almost zero rolling resistance), it never has to pull more than a VERY modest grade (3 or 4 percent), and the train can get up to speed and then go pretty much non-stop all the way to its destination. On the other hand, the train can't drive to every address in the whole country either.
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1984 300 Coupe TurboDiesel Silver blue paint over navy blue interior 2nd owner & 2nd engine in an otherwise 99% original unmolested car ~210k miles on the clock 1986 Ford F250 4x4 Supercab Charcoal & blue two tone paint over burgundy interior Banks turbo, DRW, ZF-5 & SMF conversion 152k on the clock - actual mileage unknown |
#51
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it was said a little bit tongue in cheek. My point is that the engine on the train runs at a set speed and the electrics drive the train. this is where it gets its efficiency. on a smaller scale a diesel genset running at 1800rpm constant just to provide charge while the car runs on the batteries and electric motors would be an equivalent system. and the genset can be small and run after the car stops to balance the trip requirements against the genset output. in this way you caould run with a really small diesel motor, like in the 10-20 HP or maybe even smaller
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1982 300CD Turbo (Otis, "ups & downs") parts for sale 2003 TJ with Hemi (to go anywhere, quickly) sold 2001 Excursion Powerstroke (to go dependably) 1970 Mustang 428SCJ (to go fast) 1962 Corvette LS1 (to go in style) 2001 Schwinn Grape Krate 10spd (if all else fails) |
#52
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The weight is a problem not only because of the limited amount of power the electric motor puts out (the more power it has to put out the faster it drains the battery) but also every extra pound you have to push around reduces efficiency. It takes energy to move weight. So, the fact that a diesel motor weighs 50% more than a gas motor of equivlent size and producing the same amount of power is a bit of a disadvantage. But the increased efficiency of the diesel motor more than makes up for having to push around the extra weight. A diesel hybrid would be the ultimate in efficiency, but I think that the limited market for hybrids, combined with the limited market for diesels, would add a double premium to the price. The more limited the production of an item, the more expensive that item will be to produce - especially when you're talking about something that requires as much tooling and production equipment as a vehicle.
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1984 300 Coupe TurboDiesel Silver blue paint over navy blue interior 2nd owner & 2nd engine in an otherwise 99% original unmolested car ~210k miles on the clock 1986 Ford F250 4x4 Supercab Charcoal & blue two tone paint over burgundy interior Banks turbo, DRW, ZF-5 & SMF conversion 152k on the clock - actual mileage unknown |
#53
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Oops, I forgot, we did that back in the 20s thru 50s, until OTR trucking picked up pace. Of course then it was small local trucks and real "horse"-power instead of battery power. Los Angeles had a pretty good rail transport system in the 1920s, but ripped it all out when cars became more popular. |
#54
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bmw 118d
This BMW diesel hybrid is the best of both worlds...just not in the USA!
http://blog.wired.com/cars/2008/03/bmw-118d-wins-w.html
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1972 280SE 4.5 |
#55
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Diesel vw Jetta gets 50 mpg hwy
I think the Jetta gets 42 city/50 hwy. That's a bit smaller car than I'd like for a car, but it's certainly adequate for many people.
jeff |
#56
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The last year the Jetta diesel 5 spd was imported (2006), the EPA has it at 30 city 37 highway.
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1987 300TD 309, xxx 2.8.2014 10,000 mile OCI Be careful of the toes you step on today, as they may be connected to the ass you have to kiss tomorrow. anonymous “Be who you are and say what you feel, because those who mind don’t matter, and those who matter won’t mind.” Dr. Seuss |
#57
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I get about 42 MPG in mine and that's about 50/50 highway/city driving. The new EPA rules tend to underestimate the mileage, especially of small diesel cars. Gas hybrids on the other hand are now a lot more accurately rated than they used to be.
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2004 VW Jetta TDI (manual) Past MB's: '96 E300D, '83 240D, '82 300D, '87 300D, '87 420SEL |
#58
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Where did you get that information ? RichC .
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When the power of love overcomes the love of power the world will know peace. Jimi Hendrix |
#59
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How was she able to launch the car so it hit a pole 15' off the ground?
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1987 300TD 309, xxx 2.8.2014 10,000 mile OCI Be careful of the toes you step on today, as they may be connected to the ass you have to kiss tomorrow. anonymous “Be who you are and say what you feel, because those who mind don’t matter, and those who matter won’t mind.” Dr. Seuss |
#60
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That consensus is wrong. Pretty much all the new cars today are very safe. Your 2007 Civic has a better crash test rating than the average Mercedes from the mid 90's. Of course front crash test ratings are only comparable among vehicles of the same mass, but relatively speaking all new cars today are safer than their predecessors.
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2004 VW Jetta TDI (manual) Past MB's: '96 E300D, '83 240D, '82 300D, '87 300D, '87 420SEL |
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