Characteristics of gasoline in-cylinder direct injection engine |
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| Institution: | 1. Department of Mechanical Engineering, National Institute of Technology Rourkela, India;2. Department of Industrial Design, National Institute of Technology Rourkela, India;1. Faculty of Mechanical Engineering, Noshirvani University of Technology, Babol, Mazandaran, Iran;2. Mechanical Engineering Department, Michigan Technological University, Houghton, MI 49931, USA;1. Key Laboratory of Road and Traffic Engineering of the Ministry of Education, Tongji University, 4800 Cao’an Road, Shanghai 201804, China;2. Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China;3. Department of Bridge Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, China;1. State Key Laboratory of Internet of Things for Smart City and Department of Civil and Environmental Engineering, University of Macau, Macau, China;2. Guangdong–Hong Kong-Macau Joint Laboratory for Smart Cities, University of Macau, China;3. Department of Mechanical Engineering, University of Thessaly, Greece |
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| Abstract: | Combustion characteristics of a gasoline direct-injection (DI) engine were studied with fuel injection timing varied. This study showed that emissions at part load are reduced by optimizing in-cylinder air motion and injection timing. Antiknock quality and volumetric efficiency are improved at high loads. With our DI system fuel does not stick on the intake port wall during engine warmup and transient mode, and thus even a cold engine can be controlled with a quick response and a high resolution, which, as a result, can reduce emissions. Also, lean limit is significantly improved by optimizing the injection timing. |
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