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1、學(xué)兔兔www.xuetutu.com第45卷第8期機(jī)械工程學(xué)報VO1．45NO．82009年8月JOURNAL0FMECHANICALENGINEERINGAug．2009DoI：1O．3901，E．2009．08．197液壓約束活塞發(fā)動機(jī)配流系統(tǒng)的優(yōu)化設(shè)計水張鐵柱趙紅2張洪信2肖景歧2(1．青島大學(xué)車輛電子技術(shù)研究所青島266071；2．青島大學(xué)機(jī)電工程學(xué)院青島266071)摘要：液壓約束活塞發(fā)動機(jī)是一種新型液壓動力系統(tǒng)，配流閥系統(tǒng)是其中不可缺少的重要元件。對配流系統(tǒng)進(jìn)行最優(yōu)化設(shè)計，可大幅度地縮短系統(tǒng)設(shè)計周期，改善設(shè)計方案，從而達(dá)到提高整機(jī)
2、產(chǎn)品質(zhì)量的目的?；谧顑?yōu)化技術(shù)，采用對容積效率和閥的壽命線性加權(quán)的方法，得出了總目標(biāo)函數(shù)，建立液壓約束活塞發(fā)動機(jī)配流系統(tǒng)的優(yōu)化模型。通過Matlab語言程序?qū)ζ溥M(jìn)行優(yōu)化設(shè)計，對優(yōu)化數(shù)學(xué)模型進(jìn)行求解。對優(yōu)化前后的結(jié)果進(jìn)行分析，優(yōu)化后吸入閥和排出閥的沖擊力分別下降了48．77％和44．50％，優(yōu)化后的容積效率提高了10．06％。計算結(jié)果表明，所采用的算法是可行的、有效的。對此系統(tǒng)的出水閥壓力和流量隨轉(zhuǎn)速、油門的變化關(guān)系進(jìn)行試驗研究，將試驗結(jié)果與仿真結(jié)果進(jìn)行對比，仿真結(jié)果與試驗結(jié)果非常接近，誤差在6％以內(nèi)。從而驗證了液壓約束活塞發(fā)動機(jī)閥式配流系統(tǒng)優(yōu)
3、化模型的正確性與精確性。關(guān)鍵詞：配流系統(tǒng)優(yōu)化設(shè)計試驗驗證中圖分類號：TK4OptimizationDesignofValvepeOrificeSystemofHydraulicConfinedPistonEngineZHANGTiezhuZHAOHongZHANGHongxin2XIAOJingqi(1．InstituteofVehicleandElectronTechnology,QingdaoUniversity,Qingdao266071；2．CollegeofMechanical&ElectronicEngineering，Qingd
4、aoUniversity,Qingdao266071)Abstract：Hydraulicconfinedpistonengineisanewtypehydraulicpowersystem．Thevalvetypeorificesystemisanindispensablecomponentinit．TheoptimizationdesignofthevalvetypeorificesystemcanshortendesigncyclesignificantlyandimprovedesignprojectSOastoachievethea
5、imofimprovingthewholeenginequality．Basedontheoptimizationtechnology,theoverallobjectivefunctionisachievedthroughlinerweightedmethodofcubageefficiencyandvalvelife．Theoptimizationmodelofvalvetypeorificesystemofhydraulicconfinedpistonengineisbuilt．Theoptimizationdesigniscarded
6、outbyusingMatlablanguageandtheoptimizationmathematicmodelisresolved．Theresultsbeforeandafteroptimizationareanalyzed．Afteroptimization，theimpactforcesofinletvalveandoutletvalvedrop48．77percentand44．50percentrespectively，andthecubageefficiencyrises10．06percent．Theresultsindic
7、atethatthearithmeticisfeasibleandeffective．Theexperimentalworkofthissystemiscarriedout，andthechangeofoutletvalvepressureandflowratealongwiththechangeofspeedandacceleratorisstudied．Theexperimentalresultsareveryclosetothesimulationresults，andtheerroriswithin6percent，thusveilf
8、yingthecorrectnessandprecisionoftheoptimizationmodelofvalvetypeorificesystemofhydr
