Talk:Car/Kinentic Vehicles Proposal: Difference between revisions
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When this says "use of power cube" does that mean this will be a hydraulic drive vehicle that gets 100mpg? I remember reading that hydraulic transfer is much less efficient than mechanical, how will the loss in efficiency be made up? - [[User:Lex Berezhny|Lex Berezhny]] 13:47, 14 February 2012 (CET) | When this says "use of power cube" does that mean this will be a hydraulic drive vehicle that gets 100mpg? I remember reading that hydraulic transfer is much less efficient than mechanical, how will the loss in efficiency be made up? - [[User:Lex Berezhny|Lex Berezhny]] 13:47, 14 February 2012 (CET) | ||
* I think the best practical efficiency of high quality hydraulic pump/motors is 85%. The efficiency of a hydraulic-drive vehicle can be increased in the following ways: | |||
** Use hydraulics for pretty much everything; this saves weight. The drive, steering and suspension can all be hydraulic. | |||
** Build the hydraulic system so it recaptures energy from the suspension and braking activities. FedEx trucks were able to get 85mpg that way. | |||
** Integrate the largest, strongest hydraulic component (the accumulator) into the frame of the vehicle as a stressed member. | |||
** As much as possible, use metal tubes instead of rubber hoses. | |||
** As much as possible, use the highest quality pumps/motors possible. | |||
** Three wheels instead of four. | |||
** Aerodynamic body. | |||
Revision as of 20:48, 14 February 2012
When this says "use of power cube" does that mean this will be a hydraulic drive vehicle that gets 100mpg? I remember reading that hydraulic transfer is much less efficient than mechanical, how will the loss in efficiency be made up? - Lex Berezhny 13:47, 14 February 2012 (CET)
- I think the best practical efficiency of high quality hydraulic pump/motors is 85%. The efficiency of a hydraulic-drive vehicle can be increased in the following ways:
- Use hydraulics for pretty much everything; this saves weight. The drive, steering and suspension can all be hydraulic.
- Build the hydraulic system so it recaptures energy from the suspension and braking activities. FedEx trucks were able to get 85mpg that way.
- Integrate the largest, strongest hydraulic component (the accumulator) into the frame of the vehicle as a stressed member.
- As much as possible, use metal tubes instead of rubber hoses.
- As much as possible, use the highest quality pumps/motors possible.
- Three wheels instead of four.
- Aerodynamic body.