Internal-combustion engines – Combustion chamber means having fuel injection only – Combustible mixture stratification means
Patent
1998-08-14
2000-02-29
Kwon, John
Internal-combustion engines
Combustion chamber means having fuel injection only
Combustible mixture stratification means
12356821, 12356826, F02B 1700
Patent
active
060296224
ABSTRACT:
A fuel control system for a cylinder injection type internal combustion engine which allows the fuel injection mode to make transition from a compression-stroke injection mode for realizing a high air-fuel ratio to the suction-stroke injection mode for realizing a low air-fuel ratio while ensuring stable combustion state without need for additional provision of any especial devices. The system includes an intake air flow sensor for detecting an intake air flow, a crank angle sensor for detecting rotation speed or rpm of the engine and a crank angle, a fuel injector for injecting fuel directly into each of cylinders of the engine, an exhaust gas recirculation system for regulating quantity of exhaust gas recirculated from an exhaust passageway to an intake passageway of the engine, and an electronic control unit for arithmetically determining control quantities for the fuel injector and the exhaust gas recirculation system, respectively, on the basis of detection information derived from the outputs of the intake air flow sensor and the crank angle sensor, respectively. When the fuel injection mode of the internal combustion engine is changed over from the compression-stroke fuel injection mode to the suction-stroke fuel injection mode, the electronic control unit starts to control the exhaust gas recirculation in precedence to any other control required for the suction-stroke fuel injection mode.
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Kadota Yoichi
Noma Kazutoshi
Kwon John
Mitsubishi Denki & Kabushiki Kaisha
Mitsubishi Jidosha Kogyo Kabushiki Kaisha
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