Diesel-alternative fuel hybrid combustion engine control method
An alternative fuel, mixed combustion technology, applied in engine control, combustion engine, fuel injection control, etc., can solve problems such as difficult calibration, high cost of electronically controlled oil pump rack actuators, and unfavorable market promotion.
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[0012] Hereinafter, in conjunction with the drawings, a 6-cylinder diesel-natural gas dual fuel engine system is used to illustrate the implementation of the present invention.
[0013] The original mechanical high-pressure fuel pump diesel engine is equipped with an exhaust temperature sensor (3), a wide range oxygen sensor (4), a blending ratio information display (5), a natural gas injection controller, and a high-pressure diesel pump rack displacement sensor ( 7) Natural gas injectors constitute a basic diesel-natural gas dual fuel engine system.
[0014] The high-pressure diesel pump rack is mechanically connected with the vehicle accelerator pedal. When the driver depresses the accelerator pedal, the engine is out of idle speed, and the oil pump rack moves to So, the natural gas injection controller drives the natural gas injector to inject natural gas into the intake pipe according to curve 10. At this time, the engine output torque (vehicle speed) increases. If the torque ...
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