在飞轮的外缘(压)有一齿环，在发动起动时，齿与起动机的驱动小齿轮啮合。
The flywheel also has a large ring gear at its outer edge, which engages with a pinion gear on the starter motor during engine cranking.
在汽车起动时，由于误操作等原因，造成起动机绕组烧毁或打坏飞轮齿环，有时甚至引起火灾等事故。
But while starting, the starter or the flywheel gear is often destroyed by wrong operation, even sometimes fire is caused.
在汽车发动机起动时，若发动机起动后起动机不能及时断电，将会烧毁起动机或损坏飞轮齿环；
When the automotive engine is started, the engine start motor and flywheel gear may be damaged, even traffic accidents and personal safeties may be caused by wrong operation or other factors.
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