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http://dx.doi.org/10.7467/KSAE.2012.20.2.123

An Experimental Study on the Clutch Type Water Pump of Diesel Passenger Vehicle for Reducing Fuel Consumption and CO2 Emission  

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)
Publication Information
Transactions of the Korean Society of Automotive Engineers / v.20, no.2, 2012 , pp. 123-134 More about this Journal
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%.
Keywords
Fuel economy; CRDI(Common Rail Direct Injection); NEDC(New Europen Driving Cycle); CWP(Clutch-type Water Pump); Warm-up;
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  • Reference
1 B. C. Choi, W. N. Jung, Y. B. Yoon and M. G. Jung, "Conversion Characteristics of Warm-up Catalytic Converter for the Diesel Vehicle," Transactions of KSAE, Vol.13, No.3, pp.80-86, 2005.
2 E. G. Ribeiro and A. P. de A. Fillho, "Electric Water Pump for Engine Cooling," SAE 2007-01-2785, 2007.
3 Z. N. Cehreli, "Cooling System Optimization on a 5-cylinder Engine," SAE 2007-01-2600, 2007.
4 R. D. Chalgren, "Thermal Comfort and Engine Warm-up Optimization of a Low-flow Advanced Thermal Management System," SAE 2004-01-0047, 2004.
5 M. Chanfreau, B. Gessier, A. Farkh and P. Yves Gees, "The Need for an Electric Water Valve in the Thermal Managements Intelligent System," SAE 2003-01-0274, 2003.
6 R. Krafft, A. Wolf and W. Faller, "Electromagnetic Water Pump Clutch: Working Principle, Design Strategies and Applications for Heavyduty Vehicles," SAE 2007-01-4260, 2007.
7 H. Ohki, S. Ishiyama and A. Asano, "Control Technology for a Passenger Car Diesel Engine Equipped with the DPNR System," SAE 2003-01-1880, 2003.
8 T. Kanazawa and K. Sakurai, "Development of the Automotive Exhaust Hydrocarbon Absorbent," SAE 2001-01-0660, 2001.
9 Y. Banno, Y. Tanaka, T. Hihara and M. Nagata, "Pre-filter Diesel Oxidation Catalyst Development For DOC-CSF System," SAE 2004-01-1430, 2004.