• Journal of Energy Engineering
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• v.25 no.4
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• pp.74-84
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• 2016

After Sep. 2017, the LEV3 emission standard will be applied to gasoline and gas vehicles in Korea. This standard has HWFET and SFTP standard as well as FTP-75. Most of LPG vehicles were certificated as SULEV in Korea. Until now, only FTP-75 standard is applying for the certification but it is expected that HWFET and SFTP are used after beginning LEV3. In this paper, 8 LPG and 4 gasoline vehicles were tested on FTP-75 and SFTP to check whether the LPG vehicles can meet LEV3 SFTP standard or not and to suggest direction of development. Most of test vehicles did not meet the SFTP standard. To make up for the fault, fuel injection control improvement is needed.

• LP가스
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• s.87
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• pp.17-19
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• 2003

현대자동차가 앞으로 LPG자동차를 생산하지 않겠다고 발표한 것과 관련, 최근 협회는 청정연료인 LPG를 사용하는 차량의 생산.보급 확대를 위해 정부 정책이 추진되고 현대자동차로 하여금 LPG차량을 계속해서 생산할 수 있도록 YMCA, 소비자문제를 연구하는 시민의 모임, 한국소비자연맹, 한국소비생활연구원, 대한주부클럽연합회가 정부와 자동차사에 건의해 줄 것을 요청했다. 각 단체에 보낸 공문내용을 게재한다.

• LP가스
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• s.85
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• pp.54-59
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• 2003

LPG자동차보급협의회는 '03. 5.29 서울교육문화회관에서 "경유차량의 LPG개조 사업 세미나"를 개최하고 기술 및 보급 등에 대해 의견을 나눴다.

• Transactions of the Korean Society of Automotive Engineers
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• v.12 no.5
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• pp.73-78
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• 2004

The liquid phase LPG injection (LPLi) system (the third generation technology) has been considered as one of the next generation fuel supply systems for LPG vehicles, since it has a very strong potential to accomplish the higher power, higher efficiency, and lower emission characteristics than the mixer type(the second generation technology) fuel supply system. To investigate the durability property of core part of injector in liquid phase LPG injection system, leakage test, SEM test of injectors and analysis of unvaporized fuel components with various LPG fuel qualities were tested. The experimental results showed that no serious problem in durability test using favorable LPG fuel quality, while high leakage amount due to the large scratches in the needle and nozzle of the injector were found using LPG fuel with highly containing olefin components, especially butadiene species.

• LP가스
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• s.74
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• pp.21-30
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• 2001

최근 LPG수입사는 저공해 LPG청소차 개조, .LPG버스 시범운행, 중소형 LPG엔진 개발추진 등 저공해 LPG차량 보급을 위한 다양한 노력을 기울이고 있다. 국내 LPG차량의 기술현황 및 보급전망 등에 대해 특집으로 엮어 봤다.

• Journal of ILASS-Korea
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• v.27 no.4
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• pp.195-202
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• 2022

Recently, the global automobile market is rapidly changing from internal combustion engine vehicles to eco-friendly vehicles including electric vehicles. Among eco-friendly vehicles, LPG vehicles are low in fine dust and are suggested as a realistic way to replace diesel vehicles. In addition, it is more economical than gasoline in its class, showing a cost-saving effect. In Korea, the business of converting gasoline into LPG is active. Research is being conducted to apply this to hybrid vehicles. In this study, the difference in energy consumption efficiency was analyzed when LPG fuel was applied by selecting a 2-liter GDI hybrid electric vehicle. The operation of the hybrid system according to various driving characteristics was confirmed by selecting the WLTC mode. As a result, it was confirmed that the BSFC was about 5% lower than that of gasoline fuel when using LPG fuel. This is due to the active operation of the motor while driving. Optimization is required as battery consumption increases from an energy perspective.

• LP가스
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• s.88
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• pp.11-19
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• 2003

국내 LPG자동차 생산에 신규로 적용될 액분사방식(LPLi) 개발과 관련하여 가스자동차의 발전과 주요 특성, 연료시스템의 성능평가 등 최근 기술개발 동향에 대해 살펴본다. 이 내용은 가스안전공사가 발간한 가스안전지 (03.11)에 게재된 내용이다.

• Transactions of the Korean Society of Automotive Engineers
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• v.10 no.5
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• pp.107-113
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• 2002

LPG has been well known as a clean alternative fuel for vehicles. Recently, several LPG engines for heavy duty vehicles have been developed, which can replace some diesel engines that are one of the main sources for air pollution in the urban area. Because cylinder bore of heavy duty LPG engine is larger than that of gasoline, the study of knock characteristics of LPG engine are needed. In this study, the knock characteristics were investigated with various engine speed, air excess ratios and LPG fuel compositions. Experimental results indicated that the Knock occurrence probability decreases with increasing engine speed and propane fraction of fuel. The Knock occurrence probability is highest at excess air ratio of 1 and decreases as the mixture strength became leaner.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.7 no.6
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• pp.993-997
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• 2006

This research presented experimental results obtained from the bench test of a 1800cc LPG vehicle, fitted with ECM for fuel supplying controlled system. The comparison study was made with non-ECM-equipped in terms of performances and emission characteristics. CVS-75 emission tests was conducted in order to meet emission regulations.

• Journal of the korean Society of Automotive Engineers
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• v.27 no.3
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• pp.9-13
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• 2005