Air-fuel ratio control system for internal combustion engines
Patent
·
OSTI ID:6793285
This patent describes an air-fuel ratio control system for internal combustion engines, comprising: an air-fuel ratio sensor mounted in an exhaust pipe of an internal combustion engine and adapted to produce an output indicative of the air-fuel ratio of a mixture supplied to the engine on the basis of the composition of exhaust gases in the exhaust pipe; heating means for heating the air-fuel ratio sensor; an engine operation sensor adapted to sense whether the engine has been stopped; and control means for controlling the heating means such that is operated for a predetermined time after the engine operation sensor has sensed that the internal combustion engine has been stopped.
- Assignee:
- Mitsubishi Denki Kabushiki Kaisha, Tokyo
- Patent Number(s):
- US 4765298
- OSTI ID:
- 6793285
- Resource Relation:
- Patent File Date: Filed date 29 Sep 1987
- Country of Publication:
- United States
- Language:
- English
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