A study of a torque control algorithm for direct-injection gasoline engines |
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| Institution: | 166121. Engine and Powertrain Research Laboratories, Nissan Research Center, Nissan Motor Co., Ltd., Natsushima-cyo 1, Yokosuka-shi, Kanagawa, 237-8523, Japan;1. College of Energy and Power Engineering, Beijing Lab of New Energy Vehicles and Key Lab of Regional Air Pollution Control, Beijing University of Technology, Beijing, 100124, PR China;2. School of Mechanical Engineering, Beijing Institute of Technology, Beijing, 100081, PR China;1. School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, PR China;2. College of Energy and Power Engineering, Beijing Lab of New Energy Vehicles and Key Lab of Regional Air Pollution Control, Beijing University of Technology, Beijing 100124, PR China;3. Collaborative Innovation Center of Electric Vehicles in Beijing, Beijing 100081, PR China;1. College of Energy and Power Engineering, Beijing Lab of New Energy Vehicles and Key Lab of Regional Air Pollution Control, Beijing University of Technology, Beijing, 100124, PR China;2. School of Mechanical Engineering and Collaborative Innovation Center of Electric Vehicles in Beijing, Beijing Institute of Technology, Beijing, 100081, China |
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| Abstract: | A new torque control system was developed for direct injection gasoline engines. The control algorithm was obtained through an analysis of torque behavior under lean combustion with the application of EGR. Tests were conducted in which the openings of both the throttle valve and EGR valve were used as the control parameters, and the fuel injection quantity was synchronized with the phase of the air flow into the cylinders. It was found that good correspondence was obtained between the actual torque and the target torque even when the air–fuel ratio and the EGR rate were changed under transient operating conditions. |
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