To prevent noises from being generated by providing at any time a transmission belt with an appropriate tension during the operation of an engine and by quickly dealing with clattering when the clattering of a transmission belt occurs, in a timing transmission device of the internal combustion engine whose body is mounted with a tensioner for providing the transmission belt with a tensional force by slide-contacting a slipper with the endless transmission belt for transmitting rotation power from a crankshaft to a camshaft and then pushing the slipper with a plunger.
A displacement detection sensor 56 is mounted to the engine body 11 on a camshaft 17 side instead of a tensioner 26 side to detect the displacement of the slipper 25. The operation of a plunger retreat prevention means 57 attached to the tensioner 26 to prevent the plunger 39 from retreating is controlled by a control unit based on a value detected by a displacement detection sensor 56.
Kazuaki Niki
Nude Shima Shinji
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