Quote:
Originally Posted by oil pan 4
If you want to replace your transmission with a much less efficient hydrostatic drive be my guest.
Only problem is these pumps and motors are also full of moving parts.
A fixed displacement pump could be used at the cost of efficiency.
A varrible displacement multiple piston pump that could put out around 100 horse power worth of fluid power costs at least $32,000 and weighs at least 300 pounds. I know because I have replaced a few over the years.
Then take an equally large and heavy hydraulic motor that costs, I am going to guess around $10,000 and let me know how much money this new less efficient hydraulic drive line is saving.
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Nah, I'll take 97% efficiency motor in the powertrain hydraulic drive and one of these 55% efficient direct combustion to hydraulic pressure engines, which you can't touch with anything smaller than the largest diesel engine on the planet.
Chiron Free Piston Engine
More reading material, if anyone here even bothers.
http://www.innas.com/home.html
And if you want to even try harder.
US# 7677208
Here is a link for those who are cpu challenged
http://www.google.com/patents/US7677208
regards
mech