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1、摘要无级变速技术,它采用传动带和工作直径可变的主、从动轮相配合来传递动力,可以实现传动比的连续改变,从而得到传动系与发动机工况的最佳匹配。常见的无级变速器有液力机械式无级变速器和金属带式无级变速器。自动变速器,按齿轮变速系统的控制方式,它可以分为液控液压自动变速器和电控液压自动变速器;按传动比的变化方式又可分为有级式自动变速器和无级式自动变速器。因此,无级变速器实际上是自动变速器的一种,但它比常见的自动变速器要复杂得多,技术上也更为先进。 无级变速器与常见的液压自动变速器最大的不同是在结构上,后者是由液压控制的齿轮变速系统构成,还是有挡位的,它所能实现的是在两挡之间的
2、无级变速,而无级变速器则是两组变速轮盘和一条传动带组成的,比传统自动变速器结构简单,体积更小。另外,它可以自由改变传动比,从而实现全程无级变速,使车速变化更为平稳,没有传统变速器换挡时那种“顿”的感觉。关键字:无级变速器;自动变速器;齿轮变速5AbstractSteplessspeedtechnologyUSESbeltandtheworkoftheLorddiametersdrivenpulley,cooperatedwiththepowertodeliver,canrealizetheTRANSMISSIONratioofthecontinuouschange,an
3、dgettheTRANSMISSIONandengineconditionthebestmatchbetween.Commonstep-lesstransmissionhavehydraulicmechanicalstep-lesstransmissionandbelttypestep-lesstransmission,thecurrentdomesticmarketofthevehiclesalreadymoreandmore.Editorthissectionstep-lesstransmissionandtheoriginoftheautomatictransmi
4、ssion.Automatictransmissioniseasytooperate,reducefatiguedriving,bornofthegeardrivesystem,thecontrolmethod,itcanbedividedintothehydrauliccontrolledhydraulicandelectricautomatictransmissionhydraulicautomatictransmission;Accordingtothechangeofthetransmissionwayandcanbedividedintohavelevelso
5、fautomatictransmissionandnolevelsofautomatictransmission.Therefore,step-lesstransmissionisactuallyakindofautomatictransmission,butitthancommonautomatictransmissionismuchmorecomplex,moreadvancedtechnologies.Step-lesstransmissionandcommonhydraulicautomatictransmissionofthebiggestdifference
6、sisonthestructure,thelatterisbyhydrauliccontrolgeardrivesystemstructure,stillhavethegears,itcanberealizedinbetweenthetwoblockiscontinuouslyvariabletransmission,andistwogroupsplateandabeltspeedofthantraditionalautomatictransmission,simplestructure,smaller.Inaddition,itisfreetochangegearra
7、tios,soastorealizethefullspeedsteplessspeedchange,makemoresmoothly,withoutthetraditionaltransmissionshiftatthe""feeling.Editorthissectionstep-lesstransmissionclassification.Keywords:Steplessspeedtechnology;Automatictransmission;reducefatiguedriving5目录摘要IIIAbstractIV目录V1绪论