Air-fuel ratio feedback control system for internal combustion e

Details Air-fuel ratio feedback control system for internal combustion e Air-fuel ratio feedback control system for internal combustion e

1981-07-30

1983-07-19

Argenbright, Tony M.

Internal-combustion engines

Charge forming device

Having fluidic logic control means

123589, F02M 718

Patent

active

043938434

ABSTRACT:
An air/fuel ratio feedback control system for internal combustion engines, which is arranged such that when a pulse motor for driving an air/fuel ratio control valve passes the switching point of position detecting means during feedback control operation, a value indicative of the number of steps corresponding to the reference position of the pulse motor, stored in a memory in an electrical circuit for driving the pulse motor is simultaneously shifted to an actual position counter. Air/fuel ratio control can be achieved with accuracy on the basis of a count in the above actual position counter which thus exactly corresponds to the actual position of the pulse motor.

REFERENCES:
patent: 4083337 (1978-04-01), Hattori et al.
patent: 4106451 (1978-08-01), Hattori et al.
patent: 4192268 (1980-03-01), Hattori et al.
patent: 4337742 (1982-07-01), Carlson et al.

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