The study of the energetic performance in test cycles

[摘要] One of the most important subsystems of modern passenger cars is the transmission. This paper aims to investigate the global performances of a modern transmission in different test cycles including the newly introduced WLTC (Worldwide Harmonized Light Vehicles Test Cycle). The study is done using a complex model developed in a performant simulation environment. Transmission efficiency calculation is emphasized, the efficiency being considered variable depending on engine torque, engine speed and gear ratio. The main important parameters (vehicle speed fluctuation, overall transmission efficiency, fuel consumption ratio) needed to compare test cycles and the transmissions performance are determined.

[发布机构] Automotive Engineering Department, University Politehnica of Bucharest, 313 Spl. Independentei, Bucharest, Romania^1

[效力级别] 运输工程 [学科分类] 工业工程学

[关键词] Complex model;Engine speed;Engine torque;Global performance;Light vehicles;Simulation environment;Transmission efficiency;Vehicle speed