http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
심주현(Juhyen Sim),고춘식(Chunsik Ko),이상민(Sangmin Lee),이옥재(Okjae Lee),이창언(Chang-Eon Lee) 한국연소학회 2012 KOSCOSYMPOSIUM논문집 Vol.- No.45
An experimental study was performed to provide the effect of PM reduction and the improvement of diesel alternative ratio utilizing diesel-natural gas dual-fuel combustion mode in a retrofit 3.4-liter diesel engine. In order to achieve the same power as the original diesel engine, engine control unit (ECU) of the dual-fuel engine was calibrated. As a result, diesel alternative ratio was found that the maximum value of diesel alternative ratio was about 96%. Finally PM emission experiment was performed in C1-8 mode cycle and it was shown PM emission was extremely reduced down to 7.42*10<SUP>-7</SUP> g/kWh comparing with mechanical diesel engine.
1.8L 급 가솔린 직접분사식 엔진의 성능 분석에 관한 연구
나동하(Dongha Na),곽용환,고춘식(Chunsik Ko),이창언(Chang-Eon Lee),김종혁(Jong-Hyuk Kim),안기환(Gi-Hwan Ahn) 한국자동차공학회 2012 한국자동차공학회 학술대회 및 전시회 Vol.2012 No.11
In this study, in order to analyze the characteristics of Gasoline Direct Injection Engines commercially available in Europe, 1.8L-class gasoline direct injection engine was chosen for the experiment, and the performance of the vehicle and its engine were analyzed. Experimental operation of the engine by chassis dynamometer are performed for a driving range of targets, and engine dynamo-experiment are performed at full load and partial load to study performance of the target engine. Experiment targets at the center of the engine cylinder head is equipped with spark plugs, and the turbocharger is applied to improve the power output. The engine was driving below 2500 rpm more than 90% of the vehicle testing time and the engine was operated at a load rate of less than 60%. In order to suppress exhaust gas temperature rise at full load, the engine drove with rich mixture at 3000 rpm and the above. BMEP was perceived by increasing the ignition timing and the two-stage fuel injection for partial load characteristics were observed above 12 bar of the BMEP. In addition, the combustion analysis was performed in this study. Excess air rate and emissions reduction efficiency were measured to characterize the test engine.
기계식 디젤엔진의 디젤-천연가스 혼소화를 통한 디젤 대체율 향상 연구
심주현(JuHyen Sim),곽용환(Yonghwan Kwak),고춘식(Chunsik Ko),이욱재(Okjae Lee),이상민(Sangmin Lee),이창언(Chang-Eon Lee) 한국자동차공학회 2012 한국자동차공학회 학술대회 및 전시회 Vol.2012 No.11
An experimental study was performed to provide the effect of PM reduction and the improvement of diesel alternative ratio utilizing diesel-natural gas dual-fuel combustion mode in a retrofit 3.4-liter diesel engine. In order to achieve the same power as the original diesel engine, engine control unit (ECU) of the dual-fuel engine was calibrated. During this calibration, the amount of diesel fuel injection was fixed same as the amount in the idle state for all engine load conditions and liquefied natural gas (LNG) fuel injection was adjusted to increase power based on the power in idling state. LNG fuel was injected by a single point injection at the inlet of intake air manifold. As a result, diesel alternative ratio was improved in overall through making up the characteristic of lower diesel fuel consumption in comparison with mechanical diesel engine. Diesel alternative ratio was calculated from the experimental data acquired from full load test. It was found that the maximum value of diesel alternative ratio was about 96%. Finally PM emission experiment was performed in C1-8 mode cycle and it was shown PM emission was extremely reduced down to 7.42*10<SUP>-7</SUP> g/kWh comparing with mechanical diesel engine. From these results we believe our dual-fuel engine could meet Tier-4 regulations.