Journal of Industrial Technology (산업기술연구)

Kangwon National University, Institute of Industrial Technology (강원대학교 산업기술연구소)
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Development of CNG/Gasoline Bi-fuel engine for a small truck and the evaluation of engine performance

소형 트럭용 CNG/가솔린 겸용 엔진 개발과 성능 분석

  • 권오운 (강원대학교 대학원) ;
  • 김재수 ((주) 엔지브이아이) ;
  • 박용국 ((주) 엔지브이아이) ;
  • 김성준 (강원대학교 기계메카트로닉스공학부)
  • Published : 2006.08.31
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Abstract

A diesel truck of 1 ton is re-powered by a gasoline engine and the fuelling system of gasoline engine modified to gasoline/CNG bi fuel system. The engine characteristics such as fuel economy and power are evaluated by driving rest, sloping test and dynamometer. The driving test prove the driving cost is saved by 55% and the maximum speed is raised by 13%, which is mainly due to the higher calorific value of CNG. The sloping test is done on the road of which slope is 15%. The truck shows the mean velocity of 88km/h, which means that a re-powered truck is working fine. The BHP are measured by dynamometer. The power and torque produced by a re-powered truck are reduced by 13% and 14% respectively from the power of gasoline engine. The BHP reduction is one of main problems which one has to solve in near future.

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