Internal-combustion engines – Charge forming device – Fuel injection system
Patent
1988-05-02
1989-08-29
Nelli, Raymond A.
Internal-combustion engines
Charge forming device
Fuel injection system
123440, 204 1T, 204425, 204400, G01N 2746, F02M 5100, F02D 4114
Patent
active
048607126
ABSTRACT:
A method for controlling an oxygen concentration sensor in which the supply of a heater current to a heater element is started when the complete combustion of the engine is detected. The supply of a pump current to an oxygen pump element is started when an internal resistance of the heater element is determined to be in a predetermined range. The supply of the pump current is started when the temperature of the oxygen pump element and the sensor cell element becomes sufficiently high to prevent the pump current from flowing excessively, thereby preventing the generation of blackening phenomenon.
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Mieno Toshiyuki
Nakajima Toyohei
Honda Giken Kogyo Kabushiki Kaisha
Nelli Raymond A.
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