Engine air amount prediction based on engine position
AssigneeFord Global Technologies, LLC
InventorsDonald James Lewis, John D. Russell
Life of this patent
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Abstract
A system and method to predict engine air amount for an internal combustion engine is described. Included is a method to predict a change in engine air amount based on engine position. This method especially suited to engine starts, where engine air amount is difficult to predict due to low engine speed and limited sensor information. The system and method provides the prediction of engine air amount without extensive models or calibration. Fuel is supplied based on the predicted engine air amount.
Claims10
A fuel injection controlling method for an internal combustion engine, comprising:
- counting a number of cylinders receiving at least one fuel injection from a start of an operation of the internal combustion engine;
- and
- calculating an estimated engine air quantity based on said counted number of cylinders, and adjusting delivered fuel based on said estimated engine air quantity.
A fuel injection controlling method for an internal combustion engine, comprising:
- counting a number of engine events from a start of an operation of the internal combustion engine;
- and
- calculating an estimated engine air quantity based on said counted number of engine events, and adjusting delivered fuel based on said estimated engine air quantity.
A system for controlling an internal combustion engine, comprising:
- a sensor for providing a signal indicative of engine position;
- a controller for calculating a change in engine air amount based on said sensor signal,
- adjusting fuel supplied to the engine at least during an engine start, based on said engine air amount.
A computer readable storage medium having stored data representing instructions executable by a computer to control fuel injection for an internal combustion engine, said storage medium comprising:
- instructions for counting a number of cylinders receiving at least one fuel injection from a start of an operation of the internal combustion engine;
- and
- instructions for calculating an estimated engine air quantity based on said counted number of cylinders, and adjusting delivered fuel based on said estimated engine air quantity.
Dependencies are inferred from the claim text.