| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a cooling device and a cooling method of an internal combustion engine by means of which even during various kinds of operational states of a vehicle or the internal combustion engine, the internal combustion engine can be put into an optimum condition, and a fuel economy, an exhaust gas performance, and an output performance can be improved by adequately controlling a cooling water pump for which requested contents are complicated and diversified. <P>SOLUTION: The cooling device of the internal combustion engine includes a variable cooling water pump 13 of which the discharge rate can be changed even at the same engine speed, and a control device for controlling the variable cooling water pump 13. The control device controls the operation of the variable cooling water pump 13 divided into an idle operating state, a deceleration operating state, an acceleration operating state, and other normal operating state. <P>COPYRIGHT: (C)2013,JPO&INPIT |
