重庆理工大学学报：自然科学Issue(7)：1-13,13.
Fuel Consumption Potential of the Pushbelt CVT
Fuel Consumption Potential of the Pushbelt CVT
Van der Sluis, Francis 1Van Dongen, Tom 1Van Spijk, Gert-Jan 1Van der Velde, Arie 1Van Heeswijk, Ad1
作者信息
- 1. Van Doorne＇ s Transmissie-Bosch Group, Netherlands
- 折叠
摘要
Abstract
The efforts to further reduce fuel consumption of vehicles equipped with a pushbelt type Continuously Variable Transmission（CVT） focus on different sources of loss.In this paper the magnitude of these losses and their potential for reduction is described.Inside the CVT,the variator,its control strategy and the hydraulic actuation circuit can be distinguished as the main potentials.A major opportunity is offered by a new control strategy that takes the actual slip between belt and pulley as the control parameter.The resulting decrease of clamping forces on the pushbelt leads to a reduction of variator and actuation losses.Further potential is found in the hydraulic actuation circuit by an improved tuning of the power supply to the actual power requirement.Outside the CVT additional potential is found in start-stop functionality as supported by measures inside the transmission.The paper describes the theoretical background as well as practical fuel savings of up to 5.5% that were obtained in tests on vehicle level.Slip control adds an inherent robustness to the operation of the pushbelt and opens up the fuel saving potential of the CVT thus reinforcing its position as the benchmark for the near future.关键词
CVT/pushbelt/fuel consumption reduction/control strategy/hydraulicsKey words
CVT/pushbelt/fuel consumption reduction/control strategy/hydraulics分类
交通运输引用本文复制引用
Van der Sluis, Francis,Van Dongen, Tom,Van Spijk, Gert-Jan,Van der Velde, Arie,Van Heeswijk, Ad..Fuel Consumption Potential of the Pushbelt CVT[J].重庆理工大学学报：自然科学,2011,(7):1-13,13.
