重型车辆整车一体化自动变速技术

Auto-shift Technology through Integrated-control Method Based on Heavy Truck

针对重型车辆装用手动操纵12挡机械变速器后,经常出现因换挡误操作、跳挡变速而造成换挡冲击,导致主离合器过度磨损的问题,设计了整车一体化自动变速系统,并设计了电气自动换挡执行机构。同时通过发动机电控单元的通信,实现了对整车动力传动的协调控制。实车试验证明,所加装的全气动机械自动变速系统解决了离合器过度磨损的问题,整车燃油经济性提升了20%。

Improper shifting of the heavy truck which is installed with a manual 12 speed gear box usually makes the clutch wear and tear. To solve this problem, an auto-shift system was designed through integrated control method, and so were the automatic implements for gear box and clutch. Through interaction with electric controlling engine, the adapted control on the power driveline of the truck was carried out. The vehicle driving tests prove that the auto-shift system can resolve the excessive wear of the clutch, and improve the economical characteristic of fuel by 20 %.