Method for controlling an oxygen concentration detection apparat

Details Method for controlling an oxygen concentration detection apparat Method for controlling an oxygen concentration detection apparat

1986-12-01

1988-01-26

Nelli, Raymond A.

Internal-combustion engines

Charge forming device

Fuel injection system

123440, F02M 5100, F02M 700

Patent

active

047210885

ABSTRACT:
A method for controlling an oxygen concentration detection apparatus mounted on an engine, including an oxygen concentration sensing element and a heater element for heating the oxygen concentration sensing unit, includes an operation for detecting an engine temperature of a time immediately before the start of the supply of a drive current to the heater element, and an operation for controlling the magnitude of the drive current for a time period which is determined correspondingly to the engine temperature, to be lower than a level of the drive current to be supplied to the heater element after the elapse of the time period determined according to the engine temperature.

REFERENCES:
patent: 4011562 (1986-09-01), Nakano et al.
patent: 4543176 (1985-09-01), Harada et al.
patent: 4601809 (1986-07-01), Kitahara
patent: 4628883 (1986-12-01), Kataoka
patent: 4644921 (1987-02-01), Kobayashi et al.
patent: 4655182 (1987-04-01), Nakano et al.

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