| 摘要 |
A control system for an electromagnetic clutch of an internal combustion engine mounted on a vehicle is capable of controlling the clutch current Ic to provide partial engagement of the clutch after a gear change. A negative pressure sensor is operated by the vacuum level in the induction passage of the engine. A shift lever signal (a) is supplied during operation of the shift lever of the transmission and a negative pressure signal (b) is provided by the negative pressure sensor according to acceleration of the vehicle. A control circuit includes a charging circuit (44) operated by the shift lever signal (a), a standard voltage circuit (49) responsive to the negative pressure signal (b), and a comparator (50) connected to the charging circuit (44) and the standard voltage circuit (49) and produces an output signal (e) for a period of time which is decided by the level of the negative pressure signal. A gate circuit (51, 52, 54, 55) under the control of the output signal (e) of the comparator controls the level of the clutch current Ic passing through the magnetizing coil (7). <IMAGE> |
