油电混合动力汽车行星齿轮箱设计

ABSTRACTAlthough in recent years,many countries have invested heavily in humanresearch electric cars,but so far the transmission and other key technology has notbeen effectively breakthrough,travel distance transmission and charging time greatlyrestrict the development of electric vehicles and popularity.Before transmissionproblems,therefore,how to reasonably select these components and relatedparameters,to match the optimal,under the condition of the same transmission,tobetter meet the performance requirements and the travel distance increased,theearth has been the target of the researchers,is also the main purpose of this thesis.With the progress of science and technology,the automotive industry got rapiddevelopment,and the human the higher pursuit of comfort,make the developmentof automatic transmission more deeply.In this paper,based on the research of theplanetary gear transmission,and calculated the expression of each row ratio.Through this design,we can learn the basic structure of the transmission:namelyshift actuators (2 3 clutch and brake)and planetary line connection in the propermanner,get five forward gears and one reverse gear.Using the automobile automatictransmission,simple and compact structure,the gear number,high transmissionefficiency,smooth shift,good control performance.Keywords mechanical engineering,transmission,epicycle gear transmission.