| 摘要 |
PROBLEM TO BE SOLVED: To provide a warning-up device in which it is not necessary to change a large-scale system configuration with a simple configuration, and warming-up at starting can be done in a short time. SOLUTION: The warning-up device of an engine for a vehicle has a cooling water path through which cooling water flows in the engine, an electric pump for circulating cooling water, and a detecting means for detecting the temperature in cooling water. When the temperature in cooling water is lower than the predetermined temperature, the electric pump is controlled to periodically rotate in normal and reverse direction. COPYRIGHT: (C)2005,JPO&NCIPI
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