Cam shaft rotation stopping device when the timing belt breakage

摘要

The subject innovation relates to a cam shaft rotation stopping device at the time of the timing belt breakage. The configuration of such the subject innovation is installed adjacent to the cam shaft means for detecting the breakage of the timing belt in the angular velocity change amount of the camshaft; It means for stopping the timing belt rotation timing of the camshaft to operate simultaneously with the breakage of the belt by the breakage detection means; And the cam shaft rotation stopping means when it is determined the state of a timing belt based on the input by the said timing belt breakage detection means revolutions detected value and the engine by a sensor, vehicle speed sensor and a throttle position sensor, and determines that the damage of the belt It has a structure comprising an electronic control unit that transmits an operation signal. Thus when as the subject innovation can be a timing belt is damaged during engine operation, and at the same time the broken state of the belt is detected, the detected signal is a stop projection of the axis is transmitted damping fluid to the camshaft rotational stop means via the electronic control unit cam because the constraining the rotation of the camshaft is stopped. Therefore, because the collision phenomenon between the valve and the piston due to the breakage of the timing belt does not occur it is possible to prevent the parts, such as valve or damage to the piston due to the breakage of the timing belt.