Control system for determining the quantity of intake air of an

Details Control system for determining the quantity of intake air of an Control system for determining the quantity of intake air of an

1985-06-07

1988-04-05

Lall, Parshotam S.

Boots, shoes, and leggings

36443112, 73204, 731181, F02M 5100, G01F 168

Patent

active

047363029

ABSTRACT:
A system for controlling the operating condition of an engine in which a temperature sensing element constitutes an airflow measuring device disposed in an intake air passage of the engine. The temperature sensing element is supplied with a heating current in response to a start pulse signal produced with every one-half period of each combustion cycle of the engine. A comparator delivers an output signal when a reference temperature set on the basis of the air temperature measured by an auxiliary temperature sensing element is reached by the temperature of the temperature sensing element. A pulse signal indicative of the time interval between the generation of the start pulse signal and a rise in the output signal of the comparator is delivered as an airflow measurement signal. The average airflow quantity responsive to one combustion cycle of the engine is detected, and a correction factor K is calculated from the difference between two airflow rate data measured in each combustion cycle and the average airflow quantity. Based on the correction factor K, the injection quantity, injection timing and the like are calculated.

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