Abstract: This paper addresses the problem on fire time of high energy-efficient car. To reduce the difficulty of designing objective function of ignition, the mathematical model of car kinematics was proposed and the ignition objective function with strong constraint condition and weak conditions was analyzed. With the aid of particle swarm optimization (PSO), the optimal ignition planning could be realized, which are composed of the number of ignition, the specific fire moment and the exact fire position in the whole driving process. Results of this research provide the valuable information to the driver who drives the high energy-efficient car.