Method for controlling an oxygen concentration sensor

Details Method for controlling an oxygen concentration sensor Method for controlling an oxygen concentration sensor

1986-12-23

1988-01-19

Husar, Stephen F.

Internal-combustion engines

Charge forming device

Multiple carburetors

60276, F02M 2300

Patent

active

047198958

ABSTRACT:
A method for controlling an oxygen concentration sensor mounted on an engine, including oxygen ion conductive solid electrolyte members operative as an oxygen pump element and a sensor cell element respectively, a source of pump current to be supplied to the oxygen pump element, and a heater element for heating the oxygen pump element and the sensor cell element. The method includes an operation for detecting an engine temperature of a time immediately before the start of the supply of a drive current of the heater element, and a control operation for starting the supply of the pump current after an elapse of a time period determined in response to the engine temperature from the start of the supply of the drive current of the heater element.

REFERENCES:
patent: 4485786 (1984-12-01), Kashimura
patent: 4543176 (1985-09-01), Harada et al.
patent: 4611562 (1986-09-01), Nakano et al.

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