Trip to Va Tech #2

[R.I.D.E.]

The key component is the variable displacement feature of the in wheel drive motor-pumps. They can be changed from 0 stroke to any stroke position within their design range. They can also be reversed to regenerate and provide a reverse "gear". This displacement change can occur as fast as you can apply your brakes in your car.

The diameter of the cylinders and their maximum stroke are sized to allow the pump function to capture the regenerative energy up to the limit of the tires traction with the road. Regeneration would continue until the wheels stopped completely, then the stroke position would go neutral until you accelerated again. This is at all 4 wheels, both acceleration and regeneration. With the best available tires this car could out accelerate any 2 wheel drive car on the planet!

Think of it like being able to downshift you car into first gear at 100 MPH and spin a flywheel with that energy or store it in a 5000 PSI accumulator.

This means you have the ability to stop at your maximum rate, and also accelerate at the same rate.

Imagine your car could accelerate at the same rate of acceleration as its best braking distance. You are talking 0-60 in about 130 feet!

Thats possible with the engine turned off! However it is only available once.

The amount of energy wasted in a 60-0 stop is the same as the energy required to maintain 60 MPH for .7 mile.

The ability to run the engine only in its best BSFC range means you can double the mileage with that single fact in mind. Energy provided by the engine can be applied to directly driving the vehicle as well as storage simultaneously. Eliminating idling saves 13% of total fuel consumption. You dont need a conventional starter motor, the hydraulic accumulator starts the engine. You only need to generate electrical power to run your accessories. You dont need a large battery to start your engine. The battery could be 1/4 the size.

Regardless of the storage level percentage you can always apply the power necessary to the wheels to maintain any speed, because you can constantly fadjust the stroke of the wheel motors to extract the same amount of power regardless of the level of available energy stroage.

Think of it as a bank in which you store 100s of horsepower seconds of energy. Your maximum is 1000, minimum is 300. If your energy requirement is 10 HP you could maintain that level for 70 seconds without any fuel consumed during that period. Then the engine replenishes the 700 Horsepower seconds by producing 100 HP for 7 seconds.

The size and maximum power of your engine can be varied greatly, with the only result being the time required to restore the 700 HP seconds of energy would be less with a more powerful engine. You need 100 HP from the engine at a RPM range from 1200 to 2500 RPM, but you do not need to design the engine to run at any higher speed than 2500 RPM. A single port and injector supplies all the air and fuel to the engine, while a single exhaust port allows you to keep catalist temps high as well as transfer exhaust heat to preheat the induction charge.

The engine would be fairly large displacement, probably 200 cubic inches, but would never run above 2500 RPM regardless of the circumstances.

No idling, no part throttle constant speeds, and no necessity for the components you normally have on your car to control the engine power production.

This same vehicle would be capable of accelerating to say 80 MPH, then stop, reaccelerate to 70 MPH, stop, reaccelerate to 63 MPH, stop, reaccelerate to 55 MPH, stop, and on and on>>>>>>>>>>>>>>>>>>>>
WITHOUT THE ENGINE RUNNING AT ALL> as long as your storgae was at maximum when you began the series of stops and starts.

I am hoping to achieve 85% regeneration efficiency, but 80% would be fine. 90 % would be even better but you have to have two transformations of energy and storage so the overall efficiency is the multiple of three separate component efficiencies. Each component would have to have efficiencies of over 96% individually. Very tough to do but not impossible.

If I wanted to spend the many minutes it would take I could pump an accumulator up with my legs and accelerate your car to 80 MPH with this system. Could be used to limp to the gasstation if you ran out of fuel. It would be a whole lot more efficient than pushing your car.

You could also start the engine with a totally dead battery.

regards
gary