DC Field | Value | Language |
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dc.contributor.author | Oh, Seungmook | - |
dc.contributor.author | Kim, Seungyu | - |
dc.contributor.author | Bae, Choongsik | - |
dc.date.accessioned | 2009-09-18T01:55:44Z | - |
dc.date.available | 2009-09-18T01:55:44Z | - |
dc.date.issued | 2002-05 | - |
dc.identifier.citation | SAE transactions, Journal of Fuel and Lubricants, Vol. 111, No.3, pp.2284-2296 | en |
dc.identifier.issn | 0096-736X | - |
dc.identifier.uri | http://hdl.handle.net/10203/11296 | - |
dc.description.abstract | Combustion and flame propagation characteristics of the liquid phase LPG injection (LPLI) engine were investigated in a single-cylinder optical engine. Lean-burn operation is needed to reduce thermal stress of exhaust manifold and engine knock in a heavy-duty LPG engine. An LPLI system has advantages on lean operation. Optimized engine design parameters such as swirl, injection timing and piston geometry can improve lean-burn performance with LPLI system. In this study, the effects of piston geometry along with injection timing and swirl ratio on flame propagation characteristics were investigated. A series of bottom-view flame images were taken from direct visualization using a UV intensified high-speed CCD camera. Concepts of flame area speed, in addition to flame propagation patterns and thermodynamic heat release analysis, was introduced to analyze the flame propagation characteristics. The results show the correlation between the flame propagation characteristics, which is related to engine performance of lean region, and engine design parameters such as swirl ratio, piston geometry and injection timing. Stronger swirl resulted in faster flame propagation under open valve injection. The flame speed was significantly affected by injection timing under open valve injection conditions; supposedly due to the charge stratification. Piston geometry affected flame propagation through squish effects. | en |
dc.description.sponsorship | The authors would like to express thanks to the support of LG-Caltex Gas and SK Gas through Heavy duty LPG engine development in KIMM (Korea Institute of Machinery and Materials). The research was also supported by NRL (National Research Laboratory) scheme, Ministry of Science & Technology, Korea. | en |
dc.language.iso | en_US | en |
dc.publisher | Society of Automotive Engineers | en |
dc.subject | Flame propagation | en |
dc.subject | Heavy duty LPG engine | en |
dc.title | Flame Propagation Characteristics in a Heavy-Duty LPG Engine With Liquid Phase Port Injection | en |
dc.type | Article | en |
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