期刊
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
卷 33, 期 3, 页码 224-234出版社
WILEY-BLACKWELL
DOI: 10.1002/er.1462
关键词
cavitation; coolant flow; engine warm-up; water pump
资金
- Future Vehicle Technology project
Cavitation is a well-known phenomenon that causes performance losses in all kinds of hydraulic machinery, including automotive water pumps. The present study uses a coolant flow test rig to investigate cavitation in water pumps. The coolant flow rate was measured for various coolant temperatures and compositions. This study validates that cavitation occurs during the coolant warm-up period, in which coolant temperature is typically below 80 degrees C. Cavitation was also related to a drop in the water pump inlet pressure and driving torque. Based on the results from this study, it can be concluded that cavitation is affected by coolant temperature, engine speed, and coolant composition. Furthermore, it is found that the use of an electric water pump is effective for minimizing the pressure drop and driving loss of the pump. Copyright (C) 2008 John Wiley & Sons, Ltd.
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