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한국의 잠재적인 연료인 CNG연료의 성능 및 배출물에 관한 연구
조행묵(Haeng Muk Cho),Bhupendra Singh Chauhan 한국가스학회 2009 한국가스학회지 Vol.13 No.6
Gasoline engine have proved its utility in light, medium and heavy duty vehicle in every sector of the world community. The concern about long term availability of petroleum and the increasing threat for the environment by the increasing load of vehicular emission, compel the technology to upgrade itself for meeting the challenges. CNG is environmentally clean alternative to the existing SI Engines with out much change in the hardware. Many researchers have found this as a potential substitute to meet the energy requirement. Higher octane number and higher self ignition temperature make it a good gaseous fuel. Although power output is slightly lesser than the gasoline it’s thermal efficiency is better than the gasoline for the same SI Engine. Results showed that reduced CO, hydrocarbon emissions is a favorable outcome, with slight increase in NOx emission when compared with gasoline fuel to dual fuel mode in the existing SI Engines.
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정적연소실을 이용한 메탄올 혼합연료의 연소특성에 관한 연구
조행묵(Haeng Muk Cho),이창식(Chang Sik Lee) 한국자동차공학회 2004 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
This work is to obtain the combustion characteristics of methanol-blended fuel in a constant volume combustion chamber. The combustion characteristics of methanol-blended fuel in a constant volume combustion chamber are investigated for various conditions of equivalence ratio, initial pressure, and pre-mixture temperature of mixture. The results of combustion experiment show that the combustion pressure is increased in accordance with the increase of initial pressure in the chamber. The combustion duration of blended fuel is increased with the decrease of air 뺈uel equivalence ratio of methanol-blended fuel.
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메탄을 혼합연료를 이용한 정적연소실내에서의 연소 특성에 관한 연구
조행묵,Cho Haeng Muk 한국마린엔지니어링학회 2005 한국마린엔지니어링학회지 Vol.29 No.2
The result of combustion experiment by using the methanol-gasoline blended fuel showed that the supplying pressure appeared the maximum pressure between equivalent rate 1.1 and 1.2. and the evaporation of the fuel has been known to have been greatly influenced by surrounding temperature and the combustion chamber temperature after being injected from the injector And it is confirmed that the rate of evaporation had been suddenly dropped according to the temperature in the combustion chamber though the injected foe) had been fully evaporated Such tendency has visibly appeared when the zone is leaner. and we recognize that the rich fuel supply is needed in the operation of cold operating.
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