Fuel controller for an internal combustion engine

Details Fuel controller for an internal combustion engine Fuel controller for an internal combustion engine

1989-02-01

1990-03-27

Argenbright, Tony M.

Internal-combustion engines

Charge forming device

Fuel injection system

123478, 123494, F02D 4118

Patent

active

049111280

ABSTRACT:
A fuel controller for an internal combustion engine has a Karman vortex air flow sensor for sensing the air flow rate into the air intake pipe of the engine and producing an electrical output signal having a frequency which is proportional to the air flow rate. A load sensor determines the air flow rate into an air intake pipe based on the output of the air flow sensor. A determining mechanism determines whether the output of the air flow sensor is reliable. A calculator calculates the actual air intake rate into the engine according to a first formula which employs the most recent output of the load sensor when the determining mechanism determines that the output of the air flow sensor is reliable, and it calculates the actual air intake rate according to a second formula which ignores the most recent output of the air flow sensor when the determining mechanism determines that the output of the air flow sensor is not reliable.

REFERENCES:
patent: 4142407 (1979-03-01), Kuroiwa et al.
patent: 4721087 (1988-01-01), Kanno et al.

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