Air-fuel ratio control system for automotive engines

Details Air-fuel ratio control system for automotive engines Air-fuel ratio control system for automotive engines

1986-12-04

1988-07-26

Nelli, Raymond A.

Internal-combustion engines

Charge forming device

Fuel injection system

123440, 123589, F02D 3300

Patent

active

047593326

ABSTRACT:
An air-fuel ratio control system for an engine has a feedback control system operated in accordance with an output voltage of an O.sub.2 -sensor. When the output voltage becomes higher than a reference voltage, the operation of the feedback control system starts. The reference voltage is set to a high level when the engine is started, and set to a low level when a set time elapses after the starting of the engine.

REFERENCES:
patent: 4485786 (1984-12-01), Kashimura
patent: 4603670 (1986-08-01), Bordech et al.
patent: 4612889 (1986-09-01), Sugiura et al.
patent: 4625699 (1986-12-01), Kobayashi et al.

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