Quote:
Originally Posted by Frank Lee
Huh. First link says hydraulic is quiet... second one says that's what they need to work on. I've been under the impression that hydraulic systems to date were objectionably noisy. Ever run a hydrostatic tractor? Hope they figure out how to quiet it down... I like the idea of hydraulic energy storage more than that of batteries, flywheels, etc..
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Frank, I think you will find that most of the hydraulic noise issues are due to pressure fluctuations in piston driven pumps, which require dampners to absorb the fluctuations. It's one of the reasons I have always been an advocate of in wheel drives where tire noise is the major factor.
I am thrilled that Chrysler has decided to take the hydraulic route. Maybe, if I can get lucky I might get the chance to show them my design.
regards
Mech