| 摘要 |
The invention prevents reverse rotation of a diesel engine which is possible to occur when the engine is started. A camshaft 13 is driven by a crankshaft 5 through power transmission means, and cams 14, 21 and 22 are provided on camshaft 13 so as to drive a fuel injection pump 12 , an intake valve and an exhaust valve, respectively. In fuel injection pump cam 14 , middle stage portion 53 is radially larger than minimum radius portion 51 and is disposed at a predetermined angle R 3 on the back side in the rotation direction of the fuel injection pump cam from maximum radius portion 52.
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