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| Yea, I liked the Sandstorm too. Started up a discussion about the design contest http://townhall-talk.edmunds.com/WebX/.f0fdf17 | |
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Replying to: goodcrd (Nov 27, 2006 10:12 am) good post, whereas I was calling to question incompetent design supporting unrealistic specifications you've taken it to a whole new level by tearing into the Cummins engine itself. I've always thought of Cummins as a top tier supplier but according to you they have a head gasket problem at 120,000 miles. And if Cummins knows about this then they don't seem to be doing anything about it on account of the fact that they are less expensive than the more robust Detroit diesels ? Hmm, I wonder if Cummins is aware that Toyota has bought into ISUZU to gain ready access to Isuzu's commercial market ? Cummins needs to get more serious about its defects or Toyota will do to them what it has done to GM. I am not a romantic towards trams and trolleybuses but it is a simple fact that the costs asociated with railbed and power distribution systems were subsumed by those operators whereas the roadbed system being part of the 'commonwealth' was provided almost free to operators of diesel buses. If buses had to pay a more justifiable fee for use of the road bed commensurate with their usage then electric transport might still be around. The Capital costs for Rail are much higher. 300,000 per bus and 1,000,000+ per light rail vehicle. And I bet the average speed for the LRT is also three times higher and more deterministic, not sure thats a valid comparison. In case you would bring up rail track costs I might remind you that the payback for libraries and opera houses is almost non existent as well. Should we not have them too ? As for being overspeced. No these Hybrid buses also need to travel on expressways at 55 MPH or 65 MPH depending what types of service is being required. . I was not suggesting that transit authorities limit themselves with lower power vehicles for their whole fleet but only for the 90% of the routes that do. Same argument as between hybrid electric cars and off road yacht-towing SUVs. Also Mass Transit systems are required in Emergencies to provide support. And a forty foot transit bus can safely move 60+ people at one time without being restricted to an external electrical power source which fail from time to time I would like to agree with you on this one but recent experiences with New Orleans showed that emergency services even in peace time by the most advanced nation on the planet are not competent to do this. Anyway I would see this as an unreasonable requirement of mass transport that is seeking to be as nonpolluting as possible. I might ask what emergency need was fulfilled in the past by having this capability ? This sounds more like a 'want' than a reasonable 'need' to me. reliance on an external electrical power source which fail from time to time OK, let's get back to diesel hybrids and avoid that problem! T2
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Replying to: toyolla2 (Nov 28, 2006 6:31 pm) |
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Analyze this http://www.ornl.gov/~webworks/cppr/y2001/rpt/121813.pdf I guess a persons views on reverse engineering depends on who's doing it. ! 
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Replying to: toyolla2 (Nov 30, 2006 8:02 am)
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| I checked the patent literature and found a 1979 U.S. patent for using a thermoelectric device to convert some of a hybrid vehicle exhaust heat to electricity. I ran a Google search and found that only the Toyota Estima minivan uses this or a similar technology. If 1/3 of the heat generated by combustion is ordinarily lost as heat, and if 1/5 of this could be converted to electricity (and sent to the hybrid storage batteries), this would give us an increase of overall efficiency of 1/3 * 1/5 = 1/15 = 6.66%. This should, therfore, be economically worthwhile. So: does anyone else on this list have more information of the appropriate thermoelectric device and associated wiring to use? | |
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Replying to: goodcrd (Nov 30, 2006 10:32 am) Pre-WWII trucks? uh.. V8's have been in 'T' vehicles since 1998. They and the transmissions are doing fine thanks.
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Replying to: kdhspyder (Dec 02, 2006 3:55 pm) Now back to what this thread is about. Hybrid Diesels. For a small fuel efficent car or truck a Hybrid diesel is not cost effective. A diesel engine is more efficent then a gas engine by about 20%. The cost of adding an existing hybrid system to a small diesel will not be recovered for many years after purchase. Think about it. It doesn't pay to spend more then it will save in initial costs. Gm already has a small hybrid diesel. It can't be sold here because of the emissions requirements. This soon will be overcome. But again the existing hybrid systems other then a mild hybrid like the Saturn VUE will cost too much to be practical. There is new engine technology like the Scuderi design which should improve engine efficiency while lowering emissions. Should be more cost effective and practical in the next 5 to 7 years. Why pursue the gas electric which companies like Toyota and Honda are pushing. Your only seeing what is being presented, go deeper. How about the MYT engine. I think its neat but I really don't think it will be fuel efficent. The Scuderi design has the best chance. Have you looked at Eaton's electric hybrid and hydraulic hybrid designs. They use whatever engine the user specs. Guess what! These are all American designs. Go figure, Oh, but what about Toyota. Using old technology found in US engineering schools for years. That is what Teas me off. Just give it all away and our children will pay for their parents buying US technology used overseas and sold back to us and there go the jobs. Go ahead buy Toyota then stick your head in the sand. Be careful soon the US "sand" may be owned by "Toyota". Good Day.
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Replying to: goodcrd (Dec 02, 2006 7:34 pm) No hugging. No vehicle is made by divine hands so all are subject problems and potenial recalls. It's how the problems are handled. After 17 years and $400 in total 'unexpected expenses' they've earned my trust. Even the Prius which had the steering recall done last month cost me nothing and in no way put me out. It's a non-issue, it's fixed, it's done. Now the rest of this rant is just goofieness..some of it's hilarious. 4c? ( You must be kidding ). The best V6 now is made by Toyota or Nissan or even Hyundai. What I'm tying to get through to a Toyota biased person is that Toyota is no better then any other auto maker. So get real. Or could you be employed by Toyota or one of it's dealers? Ask a contractor who depends on their work truck who makes the best truck. Ford!!! And I don't like Fords in general. I like GM and Dodge. GM makes the best V6 engines and most durable transmission in general. Dodge makes the best four cylinder engines and small FWD trans. Ford makes the best breathing V8's and the best Straight 6 cylinder engines. The best V8 is the one use in the Corvette. And Toyota makes Toys for people like you. And wait until you see what the new 5.7L in the Tundra does to the others. It is so far off the scale that you won't believe your eyes. How about this little tidbit. New Tundra 5.7L vs F150 5.4L... The Tundra is faster 0-60 and then brakes to a stop before the F150 even gets to 60. It's ridiculous what this will do to the industry. Only the GMT900's are close to the new Tundra. BTW don't be surprised if Daimler puts a bullet in the head of Dodge and Chrysler and keeps Jeep. Did you see yesterday that in order to move the 2006 RAMs which are becoming lot anchors Dodge has incentives of $15000 !!!! Despite how good they are...  ... apparently it hasn't been reflected in the public's willingness to buy them. Now back to our regularly scheduled thread.. For a small fuel efficent car or truck a Hybrid diesel is not cost effective. You are sure of this now? What if Toyuzu comes out with an $18,000 hybrid diesel that get's 70-80 mpg in 2010? Gm already has a small hybrid diesel. It can't be sold here because of the emissions requirements You will have to give me a link to what this vehicle is because it is unknown to me? You wouldn't be making things up would you now? Where can someone find this small GM diesel hybrid? Oh, but what about Toyota. Using old technology found in US engineering schools for years. That is what Teas me off. Just give it all away and our children will pay for their parents buying US technology used overseas and sold back to us and there go the jobs. Go ahead buy Toyota then stick your head in the sand. Be careful soon the US "sand" may be owned by "Toyota". Good Day. Your anger is getting the better of you again. When GM relocates most of it's facilities to China and Ford sells off it's European parts and moves everything to Mexico and Daimler kills off Dodge and Chrysler... you better hope that Toyota and Honda and Hyundai step in and hire new people to make up for the ones the detroiters ditched.
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Replying to: kdhspyder (Dec 02, 2006 10:07 pm) |
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