A vehicle includes an engine having a crankshaft, an electric machine having a shaft, and a front end accessory drive (FEAD). The FEAD includes a multi-speed pulley assembly mounted to one of the crankshaft and the shaft, a pulley mounted to the other of the crankshaft and the shaft, and a tension member trained around the multi-speed pulley assembly and the pulley. The multi-speed pulley assembly is configured to establish a low speed ratio between the shaft and the crankshaft and a high speed ratio between the shaft and the crankshaft. A vehicle controller is programmed to, in switch between the high speed ratio and the low speed ratio to optimize operating conditions of the FEAD.
本公开提供了“具有多个传动比的前端附件驱动”。一种车辆包括:发动机,所述发动机具有曲轴;电机,所述电机具有轴;以及前端附件驱动(FEAD)。所述FEAD包括:多挡带轮总成,所述多挡带轮总成安装到所述曲轴和所述轴中的一者;带轮,所述带轮安装到所述曲轴和所述轴中的另一者;以及张紧构件,所述张紧构件绕接在所述多挡带轮总成和所述带轮上。所述多挡带轮总成被配置为在所述轴与所述曲轴之间建立低传动比,并且在所述轴与所述曲轴之间建立高传动比。车辆控制器被编程为在所述高传动比与所述低传动比之间切换以优化所述FEAD的工况。
FRONT END ACCESSORY DRIVE WITH MULTIPLE SPEED RATIOS
具有多个传动比的前端附件驱动
2022-02-22
Patent
Electronic Resource
Chinese
HYDRAULICALLY OPERATED TWO SPEED FRONT END ACCESSORY DRIVE
European Patent Office | 2021
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