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During the gasoline engine start process, both fuel quantity and fuel film parameter change, fuel film dynamics in intake pipe is not balance, which makes the fuel quantity from nozzle and fuel quantity into the cylinder not be equaled. In order to control the air fuel ratio accurately in gasoline engine start process, fuel film model of intake pipe need to be established accurately. The costumed...
During the gasoline engine start process, air fuel ratio of gasoline engine always greatly departs the theoretical air fuel ratio by the affection of intake pipe fuel film. To decrease exhaust emission in engine start process, the dynamic characteristic of intake pipe fuel film is analyzed; a new dynamic fuel film model of intake pipe based on Aquino model is presented, and a fuel compensation method...
During the gasoline engine transient process, both fuel quantity and fuel film parameter change, fuel film dynamics balance in intake pipe is destroyed, which makes the fuel quantity from nozzle and fuel quantity into the cylinder not be equaled. Therefore, fuel film model need to be established accurately in order to control the air fuel ratio accurately. The costumed fuel film model of Aquino is...
Because the oxygen sensor is installed into the vent-pipe of gasoline engine, the air fuel ratio signal of gasoline engine exists transmission delay, which affects the control accuracy of air fuel ratio if using directive air fuel ratio sensor signal. To overcome air fuel ratio transmission delay affection, a new air fuel ratio predictive control method was provided using adaptive expanded particle...
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