| 摘要 |
<P>PROBLEM TO BE SOLVED: To avoid boiling a coolant in a water jacket 13 on a block side during warming-up, while preventing the equipment cost from increasing, in an engine 1 allowing the warming-up in a mode of stopping a coolant flow of the water jacket 13 on the block side to flow the coolant only to a water jacket 14 on a head side. <P>SOLUTION: Until the warming-up is finished, a first and second thermostat 8 and 9 close together, and the coolant circulates in the water jacket 14 on the head side and a bypass passage 6, as a closed loop. Before the warming-up is finished, the second thermostat 9 opens, and the coolant circulates in the water jacket 13 on the block side, the water jacket 14 on the head side, and the bypass passage 6, as the closed loop. After the warming-up is finished, the first and second thermostat 8 and 9 open together, and the coolant circulates in the water jacket 14 on the head side, the water jacket 13 on the block side, and a radiator passage 2, as the closed loop. <P>COPYRIGHT: (C)2012,JPO&INPIT |
