http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
커먼레일 디젤 엔진용 인젝터 드라이버 및 압력 제어기 개발에 관한 연구
노윤현(Yunhyun Roh),양기동(Kidong Yang),조경환(Kyonghwan Cho),최병철(Byungchul Choi) 한국자동차공학회 2003 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
In recent years, there has been a surge in social demand for safeguarding and conserving the envirornment, and many governments have legislated substantial reductions in diesel engine exhaust emissions. Because of this, various researchers have studied application of high pressure injection to diesel engines in order to reduce emissions. As the result common rail diesel vehicles arc very common on the domestic market.<br/> This paper represents tile injector driver and pressure controller for common rail engine that we developed, manufactured, and simulated, to meet the need common rail researcher required.<br/>
노윤현(Yunhyun Roh),조경환(Kyonghwna Cho) 한국자동차공학회 2004 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
In recent year, there has been a surge in social demand for safeguarding and conserving the environment, and many governments have legislated substantial reductions in diesel engine exhaust emissions. Because of this, various researchers have studied application of high pressure injection to diesel engines in order to reduce emissions. As the result common rail diesel vehicles are very common on the domestic market. This paper represents the TDA-8000 "Common-Rail Diesel Engine Controller" which TEMS has developed for use common rail diesel engine control sine 2002.
허성준(Seongjoon Heo),노윤현(Yunhyun Roh) 한국자동차공학회 2003 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
The major cause of air pollution is due to vehicle exhaust gas, especially caused by heavy duty diesel vehicles such as trucks and urban buses. They form over 36% of total exhaust volumes even though the proportion is just below 3%. To solve this problem, the ministry of environment executes the air pollution improvement business that substitutes diesel urban buses for natural gas buses. As the result, over 3,600 buses run in major cities presently and the plan to expand NGV to garbage trucks is under consideration.<br/> In this study, we develop natural gas MPI engine fuel control system and controller for heavy duty vehicles which is going to apply to heavy duty trucks. MPI fuel control system is attached to existing11 liter engine after taking away SPI fuel system. MPI control system such as injector driver, ICM and ECU are installed to operate actuators including injectors and ignition system. We estimated the fuel system and engine power and compared the result with SPI.<br/>
허성준(Seongjoon Heo),노윤현(Yunhyun Roh),윤성식(Sungshik Yoon),최병철(Byungchul Choi) 한국자동차공학회 2004 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
The major cause of air pollution is due to vehicle exhaust gas, especially by heavy duty vehicles such as trucks and urban buses. They form over 36% of total exhaust volumes even though the proportion is just below 3%. To solve this problem, the ministry of environment executes the air pollution improvement business that substitutes diesel urban buses for natural gas buses. As the result, over 4,700 buses run in major cities presently and the plan to expand NGV to garbage truck is under consideration. In this study, we converted gasoline vehicle to CNG/GSL Bi-fuel MPI system. MPI fuel system which is made up of injector, regulator and tank, is attached to existing gasoline vehicle. We apply spark timing advance processor in consideration of a natural gas burning characteristics.
Characteristics of Electronically Controlled Heavy-Duty Dual Fuel Engine
Seongjoon Heo,Sungshik Yoon,Yunhyun Roh,Jinwook Lee,Seokhwan Lee 한국자동차공학회 2007 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
In use 25ton trailers with Hyundai electronically controlled D6CB was converted to dual fuel system. To estimate economical efficiency, test vehicles have been operated on a certain driving route repeatedly. Test gross weight is about 30ton and both MPI and SPI natural gas injection systems are evaluated. Fuel economy, driving distance per refueling and driveability are examined in the field test including free way. Developed vehicle can be operated over 500km with dual fuel and shows 85% of diesel substitution ratio. Driveability is similar with but passing acceleration. It will be improved by calibration process. Test engine was set up for investigating power output, thermal efficiency and emission. ND 13-mode tests were performed for the test cycle. The emission result of dual fuel meets K2006 regulation the diesel equivalent engine performance output condition. Thermal efficiency is slightly low at full load condition and even worse at low load as compared to diesel operation.
윤성식(Sungshik Yoon),허성준(Seongjoon Heo),노윤현(Yunhyun Roh),김화남(Hwanam Kim),최병철(Byungchul Choi) 한국자동차공학회 2006 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
The major cause of air pollution is due to vehicle exhaust gas, especially caused by heavy-duty diesel vehicles such as truck and urban buses. They form over 36% of total exhaust volumes even though the proportion is just below 3%. To solve this problem, the ministry of environment executes the air pollution improvement business that substitutes diesel urban buses for natural gas buses. As result, over 8,600 buses run in major cities presently and the plan to expand NGV to garbage trucks is under consideration. In this study, We develop Dual Fuel natural gas engine control system and controller for heavy-duty vehicle which is going to apply to heavy-duty diesel vehicles. Dual Fuel control system is attached to existing 13 liter engine. Dual Fuel control system such as injector driver and ECU are installed to operate actuators including natural gas and diesel injectors. We estimated the fuel system and engine power, compared the result with diesel engine.
LNG 혼소시스템이 적용된 디젤 엔진 및 차량주행 특성
윤성식(Seongshik Yoon),허성준(Seongjoon Heo),노윤현(Yunhyun Roh) 한국자동차공학회 2008 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
We develop Dual Fuel natural gas engine control system and controller for heavy-duty vehicle which is going to apply to heavy-duty diesel vehicles. Test engine was set up for investigating power output, emission. ND 13-mode tests were performed for the test cycle. The emission result of dual fuel meets K-2006 regulation and the diesel equivalent engine performance output condition. To emission reduction, intake air control system were applied to dual-fuel system. In use 25ton trailers with HYUNDAI POWERTEC D6CB was converted to dual fuel system. To estimate economical efficiency, test vehicles have been operated on a certain driving route repeatedly. Test total vehicle weight is about 40ton and fuel economy, driving distance per refueling and driveability are examined in the field test including free way. Developed vehicle can be operated over 18,100㎞ with dual fuel and shows 80% of diesel substitution ratio.
열병합 발전용 300 kW급 천연가스 엔진의 노킹 특성 연구
김창기(Changgi Kim),김영민(Youngmin Kim),이장희(Janghee Lee),노윤현(Yunhyun Roh),안태근(Taekeun Ann) 한국가스학회 2008 한국가스학회지 Vol.12 No.3
열병합발전용으로 사용되는 여러 가지 원동기 중 천연가스 엔진은 1 MW 이하의 발전용량을 갖는 원동기로 가장 널리 사용되고 있다. 이론공연비 연소방식과 삼원촉매를 채택한 300 Kw급 천연가스 엔진은 강화된 배기규제를 만족시킬 수 있지만 이론공연비 연소방식은 희박 연소방식에 비해 효율이 대체적으로 낮기 때문에 최적 점화시기(MBT) 제어가 필요하다. 그러나 MBT 운전조건은 노킹이 발생되기 쉬워 높은 흡기온도 조건에서 운전되는 엔진에 대해서는 노킹제어가 이루어져야 한다. 본 연구에서는 높은 흡기온도가 요구되는 열병합발전용 천연가스엔진을 대상으로 흡기온도에 따른 엔진성능과 노킹특성에 대하여 실험한 결과를 제시하였다. Among the various prime movers for combined heat and power (CHP) system, the CNG engine is the most commonly used power generation equipment of which power is less than 1MW. The 300 kW class CNG engine for CHP can meet stringent emission regulations with the adoption of stoichiometric air-fuel ratio control and three way catalyst. As the thermal efficiency of the stoichiometric ratio engine is lower than that of lean burn engine, it is necessary to operate the stoichiometric engine at its minimum spark advance for the best torque (MBT). However, knock control should be introduced for the engine under high intake air temperature conditions because MBT operating conditions are generally very close to those of knock occurrence. In this study, engine performances and knocking characteristics were experimentally investigated for the CNG engine that needs to be operated at higher intake air temperature conditions than normal conditions.