3107 Fuel Economy Improvement by Hybrid Driving System Control of Light Duty Truck : Analytical Approach by Considering Driver-Vehicle Characteristics

Abstract

This study focuses on a hybrid system designed with consideration of closed-loop longitudinal driver-vehicle system to improve fuel economy for arbitrary driver pedal operation. In this paper, longitudinal vehicle dynamics of light duty hybrid truck and driver that following the preceding vehicle are modeled by using experimental data. Then, the problem that concerns with increase of fuel consumption is clarified by theoretical analysis using computer simulation which include both two above-mentioned models, the vehicle and the driver, as driver-vehicle system. Finally, a control method of hybrid system is proposed by considering driver pedal operation characteristics to improve fuel economy in all driving situations.