Power plants – Internal combustion engine with treatment or handling of... – Methods
Patent
1989-03-27
1990-11-20
Dolinar, Andrew M.
Power plants
Internal combustion engine with treatment or handling of...
Methods
60276, 60285, 123489, F02D 4114
Patent
active
049708589
ABSTRACT:
In an air-fuel ratio feedback control system including at least one air-fuel ratio sensor downstream of or within a catalyst converter provided in an exhaust gas passage, an actual air-fuel ratio is controlled in accordance with the output of the air-fuel ratio sensor, which is supplied to a pull-up type input circuit. After the output of the pull-up type input circuit becomes lower than an activation control level, the determination of whether or not the air-fuel ratio sensor is activated is carried out by determining whether or not the output of the pull-up type input circuit is within an active region, depending on the base air-fuel ratio of the engine.
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Gogi (Technical Report) No. 87-5098, Apr. 20,1987.
Dolinar Andrew M.
Toyota Jidosha & Kabushiki Kaisha
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