CNG发动机缸内低压直喷控制的分析

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1、·西华大学硕士论文comprehensiveexperimentalstudyofthreeaffectedbythenozzlecurrent,relevantconclusionsdrawn,andfinallytestednozzleflowverificationsystemtofurtherdrawthedesignfeaturesofthedrivecircuitcanberealized.Hardware:inputsignalprocessingmoduleisdesigned,thecen

2、tralcontrolunit,thechargepumptypein-cylinderinjectionpulsewidthmodulatedlowvoltagenozzlesolenoidvalvedrivecircuit,thecircuitimplementationofthe"openpressure,lowhold"drive.Conductedanozzlesolenoidvalvesystemfunctionalsimulationexperimentsweretestedsimultane

3、ouslyjetflowverification.TobettercontrolthesoftwareaspectsofCNGengineinjectioncontrolstrategystudiescompletedItssoftwareandflowchartdesign,includinginputsignalprogram,jetcontrolprocedures,systemmainjetwidthcalculation.KeyWords:CNGengine;AMESimnozzlemodel;E

4、nginemodel;Thechargingpumpnozzledrivercircuit;Controlstrategyresearch;DrivecircuitsystemfunctiontestIII···CNG发动机缸内低压直喷控制的研究目录摘要..............................................................................................................................IAb

5、stract.............................................................................................................................II1绪论........................................................................................................................

6、.....11.1课题的提出及研究意义..................................................................................11.2国内外CNG汽车的研究状况.......................................................................21.2.1国外研究概况.......................................................

7、................................21.2.2国内研究概况.......................................................................................31.3现阶段CNG发动机技术路线以及气体发动机的特点...............................41.4本文的主要研究内容......................................................

8、................................42喷嘴模型的建立与仿真.............................................................................................62.1CYFZ1型天然气喷嘴AMESim模型................................................