汽车发动机动力性和经济性的优化匹配.pdf

2 0 1 0 6 4 1 6 DOI: 10. 3969/ .j issn. 2010. 06. 007 * 张俊红 马正颖 张桂昌 何振鹏 马 梁 (, 300072) , , , , , , , , 40~ 70 km /h 100 km , : + : U46412 2 : A : 2010) OptimizationMatching for the DynamicalCharacteristic and the FuelEconomic Characteristic of the Truck! sEngine Zhang J nhong M a Zhengying Zhang G ichang H e Zhenpeng M a L iang (S tateK ey Laboratory of Eng ines, Tianj in Un iversity, T ianj in 300072, China) Abstract In the common design of diesel engine, it! s necessary to optmi ize the engine in order to mi prove the dynam ical characteristic and the f el econom ic characteristic of the tr ck. The tr ck! s pow er balance eq ation w as confirmed and verified by expermi ent, the dynam ical characteristic and the f el econom ic characteristicw ere analyzed based on the pow er balance eq ation and niversal characteristic of engine. The res lts showed that the pow er tilization and the f el econom ic characteristic w ere poor in the common cases. The optmi ized t rbocharger and f el injection p mp for the d iesel engine show ed that the f el cons mption of 100 km w as red ced at the speed of 40 ~ 70 km /h, and accelerating ability w as mi proved. ey words T r ck, Engine, Dynam ical characteristic, F el econom ic characteristic, M atch , , ; , , , , , , , , , , , , ,