Browse > Article
http://dx.doi.org/10.7842/kigas.2012.16.3.048

Study for Failure Examples of Injector, Idle Speed Actuator and Gasket in LPi System Vehicle  

Lee, Il-Kwon (Department of Automotive Engineering, Daelim University College)
Cho, Seung-Hyun (Department of Mechanical Engineering, Dongyang Mirae University)
Kim, Han-Goo (KODACO co., Ltd. R & D Center)
Kim, Seung-Chul (Department of Automotive Engineering, Daelim University College)
Publication Information
Journal of the Korean Institute of Gas / v.16, no.3, 2012 , pp. 48-53 More about this Journal
Abstract
The purpose of this paper studies the failure cases including with system of liquefied phase injection in liquified petroleum gas vehicle. The first case, resulting with inspection the injector of LPG, it occasionally certified the injection damage phenomenon that the fuel efficiency(km/l) was decreased to 5% by carbon deposit with injector hole when the driver operates the vehicle. The second case, it certified the interference phenomenon of air flow with carbon deposit in ISA system control for idle speed of engine and throttle body suppling air into engine. As a result, the fuel efficiency was decreased 7%. The third case, the outer air during intake stroke was intermittently flowed in this gasket gap because of weaken adhesion power phenomenon for cylinder block by intake manifold gasket tearing. Consequentially, it certified the decrease for fuel efficiency to 3% by risen the amount of fuel injection as the air inflow quantity. These failure examples reduced the power performance of engine and the fuel efficiency of vehicle. It have to minimize of failure phenomenon preparing through quality management.
Keywords
LPi system; injector; carbon; ISA system; intake manifold; sticking;
Citations & Related Records
연도 인용수 순위
  • Reference
1 현대기아자동차, LPi 정비교육교재, (2006)
2 현대기아자동차, 전자제어 LPi 시스템, (2003)
3 현대기아자동차, HI-DS Manual, (2011)
4 현대기아자동차, 정비지침서, (2011)
5 데이크 산업연구소, 그린카 시장의 실태와 전망, (2009)
6 R. Sierens, "An Experimental and Theoretial Study of Liquid LPG Injection", SAE paper 922363
7 I. T. Kim, S. H. Lee et al., " Development of HMC lPI Mono-Fuel Vehicle", SAE paper 2012-01- 1314
8 C. U. Kim, S. M. Oh, Y. K. Lee, K. Y. Kang and D. U. Lee," Characteristics of Icing Phenomenon on Injection in a Liquid Phase LPG Injection SI Engine", SAE paper 2003-01-1919
9 C. Manzie and H. C Watson,"Modelling combustion Variability in LPG Injected Engines for Improved Engine Performance at Idle", SAE paper 2004-01-0420
10 Y. M. Woo, K. T. Yeom, C. S. Bae et al., "Effects of Stratified EGR on the Performance of a Liquid Phase LPG Injection Engine", SAE paper 2004-01-0982
11 M. Flekiewicz and B. Flekiewicz," Influence of LPG Injector Location on Engine Emissions and Performance", SAE paper 2007-01-3530
12 K. J. Lee, Ju-Woon Kim, C. L. Myung and S. S. Park,"Experimental Investigation on Flow Rate performance and LPLi Engine Application of Turbine Pump with Various Compostion Ratio of LPG Feul", SAE paper 2007-01-3629
13 U. Sawul, B. Takigawa, G. Konagai, H. Yasukawa and T. Tsuji," Modeling and Engine Speed Control of LPG Injection System", SAE paper 2008-01-1020
14 U. Sawul, S. Yamaguchi, G. Konagai and T. Tauji, "Liquid LPG Injection System with Variable Fuel Injection Pressure Control", SAE paper 2010-01-0159
15 D. Agostinelli, N. Carter, G. Faug and F. Hamori, "Optimization of a Mono-fuel Liquid Phase LPG MPI Fuel System", SAE paper 2011- 01-0382
16 I. T. Kim, J. G. Choi, Y. J. Nam et al., "A Study on Fuel Economy and Low Emission Development of LPI HEV(SULEV) to Meet Stringent Emission Regulations", SAE paper 2011-01-0869