Fuel control apparatus for internal combustion engine

Details Fuel control apparatus for internal combustion engine Fuel control apparatus for internal combustion engine

1990-03-09

1990-11-20

Argenbright, Tony M.

Internal-combustion engines

Charge forming device

Including cylinder pressure or temperature responsive means

123494, F02D 4118

Patent

active

049710095

ABSTRACT:
A fuel control apparatus for an internal combustion engine comprises a pressure sensor for detecting the pressure in a combination chamber and a crank angle sensor for detecting a crank angle. During compression stroke, a microcomputer calculates the difference in pressure in the combustion chamber between two crank angles, or differentiates the pressure in the combustion chamber with respect to the crank angle at an arbitrary crank angle. Then, the microcomputer normalizes the pressure difference between the two crank angles by the pressure difference between the two crank angles when the engine is in an arbitrary reference condition, for example, its start condition, or normalizes the differentiated pressure at the arbitrary crank angle by the differentiated pressure at the arbitrary crank angle when the engine is in the arbitrary reference condition, for example, its start condition. The microcomputer then calculates the product of an amount of charged air and the pressure difference or the pressure differentiated which has been normalized, thereby producing a basic fuel injection.

REFERENCES:
patent: 4913118 (1990-04-01), Watanabe

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