Fundamental Study for Applying a Propane Gas Injection System in a Small-Ship Engine

Youngkun Kim, Bum Youl Park, Seungchul Woo, Jun Woo Jeong, Sihyun Park and Kihyung Lee ()
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Youngkun Kim: Department of Mechanical Design Engineering, Hanyang University, 55, Hanyangdaehak-ro, Sangnok-gu, Ansan-si 15588, Gyeonggi-do, Republic of Korea
Bum Youl Park: Korea R & D, 695, Sihwa Venture-ro, Danwon-gu, Ansan-si 15657, Gyeonggi-do, Republic of Korea
Seungchul Woo: Department of Mechanical Design Engineering, Hanyang University, 55, Hanyangdaehak-ro, Sangnok-gu, Ansan-si 15588, Gyeonggi-do, Republic of Korea
Jun Woo Jeong: Department of Mechanical Engineering, BK21 FOUR ERICA-ACE Center, Hanyang University, Ansan-si 15588, Gyeonggi-do, Republic of Korea
Sihyun Park: Department of Mechanical Convergence Engineering, Hanyang University Graduate School, 17 Haengdang-dong, Seongdong-gu, Seoul 133791, Republic of Korea
Kihyung Lee: Department of Mechanical Engineering, BK21 FOUR ERICA-ACE Center, Hanyang University, Ansan-si 15588, Gyeonggi-do, Republic of Korea

Energies, 2023, vol. 16, issue 20, 1-18

Abstract: As a response to stricter exhaust emission regulations, an increasing number of diesel-powered ships are switching to liquefied natural gas (LNG) fuel or installing post-processing devices to reduce exhaust gas. However, these methods are not feasible for small ships operating primarily along the coast. This is because the cost of the exhaust gas post-processing devices is high, while a large-volume fuel system is required in the case of LNG. Thus, this study used a propane gas fuel system based on a 5.0 L gasoline engine for easy application to existing small ships without major modifications. To optimize the control according to changes in the fuel system, a 1D simulation was performed on the engine to be developed, and ignition timing optimization was investigated. In addition, fuel consumption was compared with that of a gasoline-based engine. The propane engine achieved over 95% power in comparison to a gasoline-based engine. During cold-start tests, starting performance at −15 °C was ensured. The purpose of this study is to provide guidelines to assist the development of LPG or propane engines based on gasoline engines through these processes.

Keywords: propane gas injection; MBT ignition timing; 1D simulation; BSFC; cold startablilty (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2023
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