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A study of small-sized two-stroke SI engine with low pressure natural gas direct injection
Published October 23, 2001 by Society of Automotive Engineers of Japan in Japan
Event: JSAE Autumn Conference
Small-sized two-stoke SI engines are lightweight and have a feature of high power density. However they emit higher THC and have lower thermal efficiency than four-stroke engines due to short-circuiting mixture at scavenging process. To overcome these disadvantages, a low-pressure natural gas direct injection technique is introduced to a water-cooled single-cylinder engine for a motorcycle. The results showed the possibility of decreasing THC and NOx emissions and that of improving thermal efficiency. Those were attributed to the reduciton of short- circuiting mixture as well as the lean combustion.
- Shunsaku Nakai - Osakagas Co., Ltd.
- Takahiro Sako - Osakagas Co., Ltd.
- Koji Moriya - Osakagas Co., Ltd.
- Shuji Hatakeyama - Hokkaido Automotive Engineering College
- Yoshio Sekiya - Hokkaido Automotive Engineering College
- Tadashi Murayama - Hokkaido Automotive Engineering College
- Hideyuki Tsunemoto - Kitami Institute of Technology