System for engaging an electromagnetic clutch during range change operation

摘要

A system for controlling the clutch current of an electromagnetic clutch for a vehicle which has an automatic transmission and a select lever for selecting driving ranges in the transmission. A driving range switch is provided to be operated when the select lever is operated to select a driving range. A logic gate circuit is provided to respond to a signal of the select lever switch for allowing the clutch current to flow. A delay circuit responds to the signal of the driving range switch for producing an output with a delay and for opening the logic gate circuit, whereby the clutch is engaged for a predetermined period after the operation of the select lever.