6档自动变速器和CVT对燃油经济性的贡献

Six-Speed Automatic Transmissions and CVT′s to Support Fuel Economy

改善燃油经济性和 CO2 排放水平是新型轿车开发工作中优先考虑的问题。新开发的 6档自动变速器和 CVT将应用在车辆上。这些变速器可完全满足降低燃油消耗和排放的要求 ,并在任何情况下都能提高驾驶舒适性。将它们于 5档后轮驱动和 4档前轮驱动自动变速器相比 ,即可发现新变速器系统的优越性。在NEDC(新欧洲循环驾驶 )试验中可节约 6- 8%的燃油 ,而 0 - 60 km的加速性提高了 4- 1 0 %。

The improvement in fuel economy and in CO 2 emission levels has a high priority in the development work of new passenger cars and new models. Newly dev eloped 6 speed automatic transmissions and continuously variable transmissions ( CVT) will be available in vehicles in the near future. These transmissions will fulfil the requirements to reduce fuel consumption and emissions and will increa se driving comfort at the same time. A comparison with the state of the art solu tions, i.e. 5 speed automatic transmissions for rear wheel driven and 4 speed au tomatics for front wheel driven cars, shows the advantage of the new transmissio n systems. The new designs lead to a fuel consumption reduction in the New Europ ean Driving Cycle (NEDC) of 6 to 8%. In parallel there is an increase in acceler ation from 0 to 60 mph of 4 to 10%.