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터빈방식 연료펌프로 구성된 LPi 연료공급 시스템의 LPG 조성비에 따른 토출성능 및 엔진적용성에 관한 연구
임무창,명차리,박심수,박정남,김성근,Lim, Mu-Chang,Myung, Cha-Lee,Park, Sim-Soo,Park, Jeong-Nam,Kim, Sung-Kun 한국자동차공학회 2007 한국 자동차공학회논문집 Vol.15 No.3
Currently, BLDC fuel pump was applied on LPi vehicle using 3rd fuel supply system as liquified phase LPG injection method had already shown better performance than others. Its cost, however, is rather expensive because of drawbacks such as complicated structure, a fault of localization of system. In this work, demonstration system for a developed turbine type fuel pump to replace BLDC system was setup and investigated. This study results that fuel mass flow rate of turbine type pump and injection performance of injector were better compared to BLDC type. Comparing flow rate of summer LPG with that of winter LPG, the flow rate decreased about 25% using winter LPG. Performance applying turbine type LPi fuel pump to engine is confirmed.
임무창(Mu-Chang Lim),명차리(Cha-Lee Myung),박심수(Simsoo Park),박정남(Jeong-Nam Park),김성근(Sung-Kun Kim) 한국자동차공학회 2005 한국자동차공학회 춘 추계 학술대회 논문집 Vol.2005 No.11_1
Liquified Petroleum injection (LPi) system has strong points in which it can increase engine performance with less penalty in volumetric efficiency, and that it can reduce exhaust emissions with more precise injection control. The purpose of this study is development of turbine type LPi pump which has lower cost than conventional vane type. in addition to this, the durability and noise performance need to be equivalent characteristics with vane type pump. Pump test rig has been designed and manufactured to evaluate the performance of LPG fuel supply system including fuel pump, tank and pressure regulator. This experimental results showed that series connection of two fuel pump has advantage for pressure. Flow rate of turbine type LPi fuel pump can be changed variously with PWM duty control logic. And max flow rate of turbine type LPi fuel pump decrease about 46% in LPG compared with gasoline.
LPG연료 조성비에 따른 터빈방식 LPi용 연료펌프의 성능 및 엔진적용특성에 관한 연구
임무창(Mu-Chang Lim),최성원(Seong-Won Choi),명차리(Cha-Lee Myung),박심수(Simsoo Park),박정남(Jeong-Nam Park),김성근(Sung-Kun Kim) 한국자동차공학회 2006 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
BLDC type fuel pump for Liquified Petroleum injection (LPi) system has complicated structure and expensiveness. So in this study turbine type fuel pump made simple structure is possible as a substitute for BLDC type fuel pump, which was tested. This study shows that flow rate and fuel injection of turbine type fuel pump were equivalent or better performance comparing to BLDC type fuel pump. And as the turbine type fuel pump was equipped in the LPG fuel tank, possibility of mass production was founded for the noise characteristic. Also engine performances with respect to the pump change were equivalent or better than BLDC.
LPG 연료 조성비에 따른 LPLi엔진의 개별탄화수소 배출특성 및 연소현상에 대한 연구
최성원(Seongwon Choi),임무창(Muchang Lim),곽호철(Hochul Kwak),명차리(Cha-Lee Myung),박심수(Simsoo Park) 한국자동차공학회 2006 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
The regulation for hydrocarbon emissions from vehicles have become much more stringent in recent years. These more stringent regulations request vehicle manufacturers to develop the exhaust system for reducing exhaust emissions. The exhaust emission has many sources in vehicle. In order to investigate the hydrocarbon(HC) in the exhaust port, concentrations of individual HC species were measured in exhaust process. using sampling valve, the light hydrocarbon emissions were captured in the exhaust port(catalyst before and after)and analyzed from LPLi engine exhaust port(catalyst before and after) by using different fuel properties. Then exhaust samples were measured by gas chromatography(GC) and exhaust gas analyzer. Catalyst conversion efficiency for different fuel properties of Butane 100% was better than Propane 100%.
SILS를 이용한 엔진 제어기 Driving Cycle 자동 주행 제어 기능 개발
강민균(Mingyun Kang),노영창(Youngchang Noh),임무창(Muchang Lim),임성빈(Sungbin Yim),이현규(Hyeonkyu Lee) 한국자동차공학회 2018 한국자동차공학회 학술대회 및 전시회 Vol.2018 No.11
This paper is the investigation on the effect of vehicle speed control to match driving trace automatically using application SW of ECU through simulation. For emission driving test, it needs numerous tests to get reliable result because of driver’s deviation even if driver is same person. In case of automatic control by application SW of ECU, it is easy and simple. Also it reduces time to get more effective result on complicated driving trace. To apply automatic control system, it designs PID system to control acceleration and deceleration by application SW and CAN communication. These methods are operated and confirmed by simulation of SILS. As a result of SILS, the virtual vehicle speed is matched entered WLTC driving cycle in ECU. And the vehicle speed deviation is satisfied with standard of permission.