| 摘要 |
<P>PROBLEM TO BE SOLVED: To detect a prescribed engine speed in place of an engine speed detection sensor. <P>SOLUTION: A voltage obtained by dividing a powder-generation voltage of a power generator 4 by using resistors R1, R2 is input into a first reset IC 28 included in an engine speed detection circuit 26. When the input potential of the first reset IC 28 is lowered to 4V or lower, an output of the first reset IC 28 is inverted. The 4V of the divided potential divided by the resistors R1m R2 is equal to the number of revolutions of approximate 3,500 rpm of the engine, and this number of revolutions of the engine is equal to the number of revolutions immediately after a centrifugal clutch 12 is changed to a clutch off-state from a clutch on-state. The output of the first reset IC 28 is input into a microcomputer 10, and control for braking a clutch drum of the centrifugal clutch 10 is performed by the microcomputer 10. <P>COPYRIGHT: (C)2012,JPO&INPIT |
