Electronic controller for accurately controlling transient opera

Details Electronic controller for accurately controlling transient opera Electronic controller for accurately controlling transient opera

1994-03-22

1996-06-18

Argenbright, Tony M.

Internal-combustion engines

Charge forming device

Fuel injection system

123493, 36443105, F02D 4110, F02D 4112

Patent

active

055267947

ABSTRACT:
An electronic engine controller (EEC) controls the delivery of fuel to an internal combustion engine via one or more fuel injectors by executing a background routine to measure a plurality of system conditions including airflow and engine temperature. A response value is generated as a function of an aircharge value, the temperature value and a valve effect value. The EEC detects an interrupt which occurs prior to combustion of an air/fuel mixture within each combustion chamber of said engine, and in response to the interrupt execution of the background routine is halted and a foreground routine is executed in which the airflow is measured, an updated aircharge value is generated and the response value is updated as a function of the difference in aircharge values and a predetermined response alteration value. The aircharge value is replaced with the updated aircharge value. A base fuel injector signal, generated by known methods, is modified by the response value, and execution of the background routine is restarted upon completion of the foreground routine.

REFERENCES:
patent: 4401087 (1983-08-01), Ikeura
patent: 4408279 (1983-10-01), Imai et al.
patent: 4620519 (1986-11-01), Nagao et al.
patent: 4682577 (1987-07-01), Kato et al.
patent: 5353768 (1994-10-01), Messih et al.

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