| 摘要 |
PROBLEM TO BE SOLVED: To suppress or prevent excessive temperature rise of an injector after operation stop, in an engine cooling device of an engine having an injector installed therein.SOLUTION: After stop of an engine 1, a high-temperature cooling liquid in the engine 1 is replaced by a low-temperature cooling liquid in a tank 21. Thereby, heat retention in the engine 1 after the stop of the engine 1 is suppressed or prevented, and thereby a temperature of a nozzle of an injector 10 is prevented from excessively rising. Thereby, accumulation of deposit on the nozzle is suppressed or prevented. |
