Supercharged diesel engine air inflow control system
AssigneeThe Garrett Corporation
InventorsRobert L. Cholvin, Charles E. McInerney, James N. Nancarrow, Jack L. Gantz
Life of this patent
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Abstract
A control system is provided for a supercharged diesel engine to control engine air inflow in response to an operator-selected fuel flow and in accordance with a predetermined air-fuel ratio schedule chosen for minimizing undesirable exhaust emissions throughout a broad range of engine operating conditions.
Claims5
A method of controlling engine air inflow in a diesel engine system including means for supplying pressurized air to an engine and means for supplying fuel to the engine, comprising the steps of:
- selectively controlling engine air inflow with a force-biased relief valve responsive to the pressure of air supplied to the engine;
- and
- selectively altering the force-bias acting on the relief valve in response to fuel flow supplied to the engine.
A method of controlling engine air inflow in a diesel engine system including means for supplying pressurized air to an engine and means for supplying fuel to the engine, comprising the steps of:
- selecting the flow of fuel to the engine;
- modulating the position of a force-biased air flow relief valve in response to the pressure of air supplied to the engine;
- and
- adjusting the inflow of air to the engine in response to the fuel flow by altering the force-bias acting on said relief valve in response to the fuel flow to the engine.
Dependencies are inferred from the claim text.