| 摘要 |
PROBLEM TO BE SOLVED: To prevent the driving operation applying load to an engine in a lowered state of the pressure of a lubricating oil in an internal combustion engine, in particular in a diesel engine. SOLUTION: Lowering of oil pressure is displayed by an oil pressure warning lamp and an acoustic warning is sounded by driving operation for releasing a parking brake or operating a transmission to a position other than a neutral position.
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