| 摘要 |
PROBLEM TO BE SOLVED: To prevent electrification current from transiently increasing in a process of reducing a target electrification current of a solenoid to a holding current stepwise, in a differential lock control device locking the differential mechanism of a differential device with the solenoid.SOLUTION: The duty ratio of a solenoid is set with a basic duty ratio according to a target electrification current and a correction duty ratio according to the target electrification current and an actual electrification current. Then, within a predetermined time after the target electrification current is reduced, the duty ratio of the solenoid is regulated so as not to exceed a duty ratio before the target electrification current is reduced, or the basic duty ratio is made small according to the temperature drop of the solenoid. |
