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Maybe its watching a frame machine twist a full sized pickup frame like it was a plastic straw.
Or a 4 ton hand pumped hydraulic ram twist a truck frame 3 to 4 inches with the power of your arm.
Or a Kansas Jack ripping a uni body apart like a piece of paper.
Hydraulics is a very mature technology.
The pelton wheel hit 90% 120 years ago.
Even a water wheel easily topped 60%, 2000 years ago in Roman times.
An accumulator can get as close to 0 loss as you can get at 99% efficiency.
A 500 hp hydraulic motor is light enough to hold in one hand.
Designed to reach the maximum torque capability of the tire to road surface interface, you have the ability to provide 100% of the traction capability of every wheel on the vehicle, it you want to do a 1/4 mile as fast as any dragster on the planet.
Without any engine whatsoever.
The 5 states of vehicle operation.
Idling
Accelerating
Coasting
Decelerating
Braking
With a 5 gallon accumulator weighing as much as one passenger you can accelerate a car to 60 MPH in 20 revolutions of the wheels, and stop it in the same distance and recover over 80 % of the energy, minus of course the aero and rolling resistance losses.
Your rate of acceleration and deceleration is not relevant to the efficiency of the energy recovery. Panic stops and full accelerations make no difference in the efficiency of the energy recovery.
The engine can be operated at only its maximum efficiency regardless of vehicle speed or rate of acceleration or deceleration.
Idling does not exist.
Acceleration is merely choosing the rate at which you choose, the energy requirements are not relevant to economy.
Coasting is truly coasting with no power train losses, no gears pumping fluid from the gear teeth, even more efficient than neutral in a manual transmission because many of the gears and differential gears are still pumping fluid away from the gear teeth, no u joints, CV axles, no spinning parts to use energy to accelerate and decelerate.
Deceleration is regeneration
Braking is regeneration
In both cases you are recovering energy at all 4 wheels up to their maximum traction capability, down to 0 wheel speed.
The free piston direct hydraulic engine pump had a theoretical efficiency of 58% ten years ago. Today they are approaching 50% and with super critical direct injection at 30k PSI you will see engines make 60% energy conversion efficiencies, if they haven't down so already in a lab.
Is 170 MPG possible?
At what speed?
Average speeds of the EPA city cycle are about 27 MPH. At those speeds 170 is possible if the whole vehicle system is optimized for efficiency.
At highway speeds where aerodynamics become the dominant energy drain the mileage would be closer to the 80-100 range, totally depending on aero and rolling resistance optimization.
This is possible right now. Valentin, INNAS, Lightning, and several other organizations are working very hard to get us there. A military HUMMER averaged 22 MPG with a hydraulic drive conversion.
Every developer admits the most important component is the drive motor, which needs to be incorporated within the wheel, so there are no necessary mechanical connections.
You want to use a battery and an electric motor to drive this platform?
It changes nothing, just a different power source that consumes a different form of energy.
This week I started receiving junk mail from companies soliciting me to represent my patent. Its been published and it will be issued. Hopefully by the end of this year the system will be in a bicycle. A human hydraulic hybrid, that is fairly lightweight and refutes every assumption that it has to weigh to much to be practical.
0-60 as fast as a sport bike, pulse a glide capable with no engine other than human power. Spend 30 minutes completely charging the accumulator and you have 3 times the available human power for 15 minutes at 50 MPH.
On a bike with no engine requiring no fuel or electricity.
If you don't want to spend 30 minutes on your exercise machine plug it in the wall and charge the accumulator.
Fully enclosed and all weather capable, the vehicle itself will weigh about 200 pounds total or even less. That makes it just over 400 pounds with me included.
regards
Mech
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