Transactions of the Korean Society of Automotive Engineers (한국자동차공학회논문집)

The Korean Society of Automotive Engineers (한국자동차공학회)
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An Experimental Study on the Clutch Type Water Pump of Diesel Passenger Vehicle for Reducing Fuel Consumption and CO2 Emission

연비 개선 및 CO2 저감을 위한 승용디젤 차량의 클러치타입 워터펌프 적용에 따른 실험적 연구

  • Jeong, Soo-Jin (Powertrain System R&D Center, Korea Automotive Technology Institute) ;
  • Park, Jung-Kwon (Powertrain System R&D Center, Korea Automotive Technology Institute) ;
  • Oh, Chang-Boke (Research and Development Team, Taewon Mulsan Co.) ;
  • Cho, Yong-Seok (Graduated School of Automotive Engineering, Kookmin University)
  • 정수진 (자동차부품연구원 동력시스템연구센터) ;
  • 박정권 (자동차부품연구원 동력시스템연구센터) ;
  • 오창복 (태원물산 연구개발팀) ;
  • 조용석 (국민대학교 기계.자동차공학부)
  • Received : 2011.05.30
  • Accepted : 2011.07.27
  • Published : 2012.03.01
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Abstract

A typical cooling system of an engine relies on a water pump that circulates the coolant through the system. The pump is typically driven by the crankshaft through a mechanical link with engine starting. In order to reduce the friction and warm-up time of an engine, the clutch-type water pump (CWP) was applied in 2.0 liter diesel vehicle. The clutch-type water pump can force cooling water to supply into an engine by the operation of an electromagnetic clutch equipped as the inner part of pump system. The onset of CWP is decided by temperature of cooling water and engine oil. And, the control logic for an optimal operation of the clutch-type water pump was developed and applied in engine and vehicle tests. In this study, the warm-up time was measured with the conventional water pump and clutch-type water pump in engine tests. And the emission and the fuel consumption were evaluated under NEDC mode in vehicle tests. Also, tests were carried out for the various temperature conditions starting the operation of CWP. From the results of the study, the application of CWP can improve the fuel consumption and $CO_2$ reduction by about 3%.

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References

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