閉式循環(huán)柴油機可變配氣控制.pdf

1、類號DC：工學碩士學位論文密級編號Y936683閉式循環(huán)柴油機可變配氣控制碩士研究生：曹健指導教師：張文平教授學位級別：工學碩士學科、專業(yè)：動力機械及工程所在單位：動力與能源工程學院論文提交日期：2006年2月20曰論文答辯日期：2006年3月9日學位授予單位：哈爾濱工程大學哈爾濱T程大學碩十學位論文ABSTRACTThecomponentofintakeairandthesystempressurewillchangewhilethe

2、ClosedCycleDiesel(CCD)systemworksonopenstateandclosedstateTheoriginalvalvedrivingsystemmaykeeptheperformanceonlyundertheoperationofdieselopenstateThecamshapehasbeenfixedbeforeproductionandcannotbeadjustedtomeettheclosedc

3、ycleoperationofthedieselengineMeanwhile，theeasychangeoftheenginevalveswitchphase，durationandliftisanimportantmethodtoimprovetheengineperformance，increasethethermalefficiencyandreducetheemissiondischargeSoahydraulicallydr

4、iving，electronicallycontrolledvariablevalvesystemisdevelopedbasedontherequirementsfortheclosedcycledieselandenginedevelopmentsanditsperformanceisstudiedThemechanical，electronicalandhydraulicsimulationmodelisbuiltfortheel

5、ectronicallycontrolledhydraulicvariablevalvesystemThestudiesonthemainstructureparametersofthesystem，suchaspistondiameterspringrigidityofthevalveandflowareaofelectro—magneticvalve，obtainedthecharacteristicsofthevariablein

6、takevalvesystem，thereforemaybeusedtoguidetheexperimentbenchdesignBasedonthesimulation，atestisconductedonthecylinderheadsofDongan465enginewiththevariablevalvesystem，whichcanprovideexperimentaldocumentsforthevariablevalves

7、ystemdevelopmentofclosedcycledieselTestbenchincludesthevariablevalveactuatorhydraulicdrivingsource，andPLCelectroniccontrolunitFinallythesimulationmodelofthe4102BGClosedCycleDieselhasbeenm甜ewithGTPOWERSothattheeffectofvar