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Ruckus · 02-10-2010, 02:17 PM

I am building a hydraulic hybrid. Check it out.
HI-MPG Commuter Car Build.. (back to the 70's) - Page 7 - Hydraulic Innovations

I found patents on hydraulic drive systems going back to the 1880's.
I highly recommend using Google patent search.
Google Patents

I am sure you are aware of the Vincent Carman hydraulic hybrid patents?

here is a link to a Mechanics Illustrated article everyone seems to have forgotten about that I posted:
HI-MPG Commuter Car Build.. (back to the 70's) - Page 2 - Hydraulic Innovations

I too started out thinking wheel motors. But there are issues. Mostly in terms of finding parts already in production that will work.
Here is the issue:
If you size the motors large enough for low-end starting torque, then they gobble HUGE gpm on the highway.
So a variable wheel motor is needed. The manufacturers COULD make such a thing, they just don't -yet.

Because of this I went to a single variable motor driving the rear diff.

one or four motors is not the important part. The regen circuit I designed is the part I am testing. My goal was total simplicity, as the hydraulic patents out there are overly complex.

By this summer I should have a working prototype. I am not sure if I will go the patent route, but it is a possibility since the design is so simple it is novel.

Cheers.

02-10-2010, 02:17 PM	#30 (permalink)
Ruckus Hydrauic Hybrid Builder Join Date: Jun 2008 Location: Montana Posts: 5 Thanks: 0 Thanked 0 Times in 0 Posts	I am building a hydraulic hybrid. Check it out. HI-MPG Commuter Car Build.. (back to the 70's) - Page 7 - Hydraulic Innovations I found patents on hydraulic drive systems going back to the 1880's. I highly recommend using Google patent search. Google Patents I am sure you are aware of the Vincent Carman hydraulic hybrid patents? here is a link to a Mechanics Illustrated article everyone seems to have forgotten about that I posted: HI-MPG Commuter Car Build.. (back to the 70's) - Page 2 - Hydraulic Innovations I too started out thinking wheel motors. But there are issues. Mostly in terms of finding parts already in production that will work. Here is the issue: If you size the motors large enough for low-end starting torque, then they gobble HUGE gpm on the highway. So a variable wheel motor is needed. The manufacturers COULD make such a thing, they just don't -yet. Because of this I went to a single variable motor driving the rear diff. one or four motors is not the important part. The regen circuit I designed is the part I am testing. My goal was total simplicity, as the hydraulic patents out there are overly complex. By this summer I should have a working prototype. I am not sure if I will go the patent route, but it is a possibility since the design is so simple it is novel. Cheers.