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ENGINE WITH DIRECT INJECTION AND PORT FUEL INJECTION ADJUSTMENT BASED UPON ENGINE OIL PARAMETERS
ENGINE WITH DIRECT INJECTION AND PORT FUEL INJECTION ADJUSTMENT BASED UPON ENGINE OIL PARAMETERS
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机译:基于发动机油参数的直接注入和端口燃料注入调整的引擎
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摘要
An internal combustion engine includes an engine structure defining a cylinder having an intake port and an exhaust port. A piston is disposed in the cylinder and is drivingly connected to a crankshaft. A direct injection system injects fuel directly into the cylinder. A port fuel injection system injects fuel into the intake port. An oil temperature sensor and an engine speed sensor are in communication with a controller that controls the direct injection system and the port fuel injection system based on measured oil temperature and engine speed. In particular, the controller employs a control algorithm that alters the direct injection and port fuel injection split based on the measured oil temperature and engine speed. The maximum direct injection pressure reduction is limited by a maximum allowable port fuel injection duty cycle as determined by the controller.
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