Oxygen concentration-detecting device for internal combustion en

Details Oxygen concentration-detecting device for internal combustion en Oxygen concentration-detecting device for internal combustion en

1997-09-30

1999-07-06

Tung, T.

Chemistry: electrical and wave energy

Apparatus

Electrolytic

204425, 204428, 2057845, 205785, G01N 27407

Patent

active

059193468

ABSTRACT:
An oxygen concentration-detecting device for an internal combustion engine includes an oxygen concentration sensor arranged in the exhaust system of the engine, for detecting concentration of oxygen present in exhaust gases emitted from the engine. Energization of a heater for heating the oxygen concentration sensor is started when the ignition switch is turned on. The energization of the heater is stopped after a predetermined time period has elapsed after the turning-on of the ignition switch.

REFERENCES:
patent: 4715343 (1987-12-01), Kinoshita
patent: 4860712 (1989-08-01), Nakajima et al.
patent: 4915082 (1990-04-01), Uchinami et al.

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