Control system and method for controlling actual fuel delivered

Details Control system and method for controlling actual fuel delivered Control system and method for controlling actual fuel delivered

1988-07-15

1989-09-26

Wolfe, Willis R.

Internal-combustion engines

Charge forming device

Fuel injection system

123486, 123494, 36443105, F02D 4114, F02D 4118

Patent

active

048692220

ABSTRACT:
A fuel injection control system coupled to a multiport fuel injected engine for adjusting the air/fuel mixture of each combustion chamber to a preselected level. A plurality of fuel command controllers provides a separate fuel command signal to each fuel injector in response to a single base fuel command. During each correction interval of a correction time period, each of the fuel command signals is perturbed or offset in a predetermined sequence by a predetermined amount. A measurement of the average of air/fuel ratios among the combustion chambers is taken each correction interval. Airflow inducted into the combustion chambers is also measured. In response to these measurements, and the known fuel offsets, the actual fuel delivered by each fuel injector is calculated. All the fuel command controllers are corrected in response to associated fuel calculations to balance the air/fuel ratios of each combustion chamber.

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