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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.
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.
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.
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.