AVEC ‘ 06 A Control Strategy of ACC System Considering Fuel Consumption

Aiming at heavy-duty vehicle, a fuel optimal ACC system controller using consolidated action of throttle and gear is designed in this paper. Based on the investigation of fuel consumption characteristics in lower layer system with inverse model, a combined throttle and gear control algorithm is proposed to realize engine operational points track optimal fuel economic curve, thus minimizing fuel consumption rate. Computer simulation with a nonlinear heavy-duty vehicle model is carried out and its results show that the proposed control system can improve the fuel economy of ACC vehicle without sacrificing its tracking performance.

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