Internal combustion engine having inducted charge control means driven by engine through variable speed hydraulic transmission
OwnerUrban G. Robbins, Jr.inventor
Life of this patent
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Abstract
An internal combustion engine is provided with air-charge or fuel-air-charge induction means which acts as a supercharger during one mode of operation and as a subcharger during another mode. The induction means is mechanically driven from the engine via a variable speed hydraulic transmission arrangement. Means are provided to appropriately change the hydraulic circuit at the moment when power flow through the hydraulic transmission changes direction. During the subcharging mode the air-charge or fuel-air-charge induction means acts as a throttle, but the energy lost in the resulting pressure drop is returned to the engine by way of the variable speed hydraulic transmission arrangement.
Claims8
In a spark ignition piston-type internal combustion engine:
- means to variably control the quantity of air induced into the engine, said means comprising a positive displacement air blower;
- means to mechanically drive said air blower by a positive displacement hydraulic motor-pump;
- means to hydraulically drive said positive displacement motor-pump by a variable positive displacement hydraulic pump-motor;
- means to mechanically drive said variable displacement pump-motor by power obtained from the engine;
- means to control the variable displacement of said hydraulic pump-motor in accordance with the position of an acceleration control,
- whereby the quantity of air inducted into the engine is controlled by the position of said acceleration control.
Dependencies are inferred from the claim text.