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Method for controlling a vehicle powertrain having step ratio gearing and a continuously variable transmission to achieve optimum engine fuel economy
Method for controlling a vehicle powertrain having step ratio gearing and a continuously variable transmission to achieve optimum engine fuel economy
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机译:用于控制具有分级传动比和无级变速器的车辆动力总成的方法,以实现最佳的发动机燃油经济性
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摘要
A method is disclosed for controlling overall transmission ratios in a vehicle powertrain with an engine, fixed multiple-ratio gearing and infinitely variable ratio components. For a given vehicle speed and for a given vehicle traction wheel horsepower, the fixed multiple-ratio gearing and the infinitely variable ratio components are controlled to operate with an overall ratio that will permit the engine to operate with optimum efficiency.
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