I am working on a hydraulic system for a vehicle of nominal weight. Of course, the hp required to keep it at reasonable highway speeds is reasonably in the 30-40 hp range.(adsbygoogle = window.adsbygoogle || []).push({});

My issue is energy storage for acceleration (s). This of course is substantial (like 150hp, over 8-10 seconds).

My first instinct is to consider a robust accumulator. But when I jump in to the most basic of napkin approaches, I end up with a tank in the order of 80 gallons, 4-5kpsi, with the resulting storage capacity of only a few MJ of energy storage. Enough only to accelerate ~ 2 x. (I will address later (as others have) regeneration energy storage during deacceleration)

Am I heading down the wrong path here in considering a hydraulic accumulator (s), in a mid-sized car, to provide ~ 10 MJoules of energy storage?

Thanks in advance. Mike

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# Hydrualic prime mover - the accumulator!

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