The Theory and Application Study on Optimal Fuel Economy Shift Schedule

The rule of the optimal fuel-economy shifting schedule is to make the automatic gear shifted and operated with most economic shifting point, in order to achieve the goal of reducing the consumption of fuel. At present, the best optimal fuel-economy shifting schedule includes two parameter law and three parameter law. In this paper, after studying the consumption characteristics of the engine fuel, the authors put forward a comparatively simple way to establish the rule of the optimal three parameter fuel-economy shifting schedule, at the same time, through analyses of the influence of automobile quality change over the shift law, the text advances a variable systematic model, which utilizes Matlab/Simulink to carry on emulation to the course of shifting gears.