Air/fuel ratio control system for internal combustion engines, having exhaust gas recirculation control function
Patent
·
OSTI ID:6020372
An air/fuel ratio control system for performing feedback control of the air/fuel ratio of an air/fuel mixture being supplied to an internal combustion engine. The air/fuel ratio control system is provided with an exhaust gas recirculation system which is adapted to use a pressure sensor and a temperature sensor for detection of conditions of interruption of the exhaust gas recirculation at low engine load and at low engine temperature. At the same time, the above sensors are used for detection of various engine operating conditions for control of the air/fuel ratio of the mixture, and are adapted to produce outputs continuously variable with wide ranges of changes in the absolute pressure in the intake system of the engine and in the engine temperature. The exhaust gas recirculation system thus precludes the use of special sensors and therefore has a simple exhaust gas recirculation control section.
- Assignee:
- Honda Giken Kogyo K K (Japan)
- Patent Number(s):
- US 4380988
- OSTI ID:
- 6020372
- Country of Publication:
- United States
- Language:
- English
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