skeptical, You are correct. Traction fluids and lubricants have characteristics that are at odds with each other. A good traction fluid is not a good ...
http://personalwebs.oakland.edu/~leidel/SAE_PAPER_970068.pdf Inherent characteristics include full torque from zero RPM, enhanced combustion, improved...
Miquel Llauradó
m.llaurado@...
Nov 3, 2005 1:02 am
2831
Thanks Miquel, good finding! No doubt it's an ingenious idea. You wrote "no CVT at all". Do you mean no gear box too? It is difficult to have only one fixed...
2005-11-03: Seems that torotrak.com is considering smaller vehicles too: http://snipurl.com/jgbd Once I thought that their toroidal CVT was more adequate for...
Steam cars ( like steam locomotives ) didn't use clutches nor gearboxes. They performed well with direct connected engines. Mike Some links on steam cars : ...
Miquel Llauradó
m.llaurado@...
Nov 3, 2005 10:30 pm
2834
Of course Miquel. But now imagine the benefits of adding a gearbox or CVT: - starting torque could increase about 5 times or - top speed could increase about 5...
I must agree. This is a CVT forum and I am "believer". But the benefits of a gearbox or a CVT are not for free. There will be weight, lost volume, cost, ...etc...
Miquel Llauradó
m.llaurado@...
Nov 5, 2005 3:49 pm
2836
... http://www.stanleymotorcarriage.com/GeneralTechnical/GeneralTechnical.htm "Stanley Motor Carriages, while rated in boiler steaming capacities of 10, 20,...
Thank you Blue4you2uk for these good links to good hills. I agree that steam cars from circa 1900 had some water & boiler limits. But they performed well at...
Miquel Llauradó
m.llaurado@...
Nov 7, 2005 6:48 pm
2838
You mentioned steam cars, but you can also consider the Fuel Cell example: -some prototypes propose installing electric motors directly on each wheel, (fixed...
That electric engine will have to develop extremely high starting torque and extremely high RPM, always far away from it's optimum points. REPLY; Actually the...
Yeah, torque, power, ... But what about efficiency? (energy_out/energy_in) -John ... torque and extremely high RPM, always far away from it's optimum points. ...
... REPLY; They are well over 90%, some as high as 96% throughout their range. The ones they use in the electic solar cars are pushing 95%, controlers and...
... Do you mean: 96% efficiency throughout their RPM range and 96% efficiency throughout their TORQUE range too?? Incredible... (I'm not saying it is false) ...
Agreed Ken re: electric drive. Only two real problems, a) motor-generator efficiency very dependent on amount (and quality) of iron, making a significant...
... REPLY; Yes. Incredible it is, but true nonetheless. Of course, these high efficiency units are still quite costly and need also costly controlers. Of ...
... Yes, weight/efficiency trade offs is a big deal here, also some thermal tradeoffs meaning fancy magnets may mean lots of heat control needed to make them...
http://www.globalsuzuki.com/gcm/bigheart/002.html <<...the SECVT's innovative high-performance Dry Hybrid Composite Belt consists of 204 pieces of H-shaped...
Miquel Llauradó
m.llaurado@...
Nov 11, 2005 5:05 pm
2847
I really like this word PERICYCLIC. If Greek language didn't exist life would be really hard. We would lack some necessary words. The fact is that I have...
Miquel Llauradó
m.llaurado@...
Nov 11, 2005 5:36 pm
2848
Hi, ive been watching this forum for a while, looks very interesting. I am interested in CVT solutions for a turbocompound engine. So far I have come across...
Hi, ive been watching this forum for a while, looks very interesting. I am interested in CVT solutions for a turbocompound engine. So far I have come across...
The Beier cvt is not toroidal. It is a multidisc system that operates with a thick lubricating film. You can get a good description at www.uspto.gov if you...
RATIODISC@...
Nov 14, 2005 1:28 pm
2852
Hi Chris. Some references : 1. http://www.histomobile.com/histomob/tech/2/83.htm As far as I remember the Beier CVT was never used in cars. Citroën perhaps ...
Miquel Llauradó
m.llaurado@...
Nov 14, 2005 3:34 pm
2853
SUMITOMO SM Beier is the most succesful mechanical CVT (variator) in the world. Used in many process industry drives. Almost completely ignored for vehicle...
Chris Harris, The "Beier" coupling on the Napier Nomad was a tapered disc CVT, not a toroidal design. Depending upon the overall drive ratio and torque limits...
In a message dated 11/17/2005 3:15:17 AM US Eastern Standard Time, ... You should look at www.ratiodisc.com and SAE 2004-01-9356 paper No one can compare with...
RATIODISC@...
Nov 17, 2005 11:53 am
2856
Wich are your CVT volume, weight and relative max input torque? Ciao, Antonio ... From : cvtcontinuouslyvariabletransm@yahoogroups.com To :...
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