Air-fuel ratio control system

Details Air-fuel ratio control system Air-fuel ratio control system

1989-04-21

1990-06-05

Dolinar, Andrew M.

Internal-combustion engines

Charge forming device

Having fluidic logic control means

123179G, F02D 4114

Patent

active

049304801

ABSTRACT:
An air-fuel ratio control system for controlling the air-fuel ratio in an internal combustion engine includes an arrangement for switching from open control of the air-fuel ratio to feedback control thereof. A water temperature sensor is provided for detecting the engine water temperature, and a control unit for controlling the air-fuel ratio is also provided. The control unit includes an arrangement for switching from open control to feedback control when the engine water temperature reaches a selected value. The selected value is determined by the control unit in response to a detection signal received from the water temperature sensor at the time the engine is started.

REFERENCES:
patent: 4224913 (1980-09-01), Barnard
patent: 4497296 (1985-02-01), Nakajima et al.
patent: 4759332 (1988-07-01), Morozumi

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