Title:
DIFFERENTIAL LOCK CONTROL DEVICE
Document Type and Number:
Japanese Patent JP2015098877
Kind Code:
A
Abstract:
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.
Inventors:
HATORI TSUTOMU
Application Number:
JP2013237696A
Publication Date:
May 28, 2015
Filing Date:
November 18, 2013
Export Citation:
Assignee:
HITACHI AUTOMOTIVE SYSTEMS LTD
International Classes:
F16H48/34; F16D27/118; F16D48/06; F16H48/24
Domestic Patent References:
| JP2007154934A | 2007-06-21 | |||
| JP2010095026A | 2010-04-30 | |||
| JP2006017181A | 2006-01-19 | |||
| JP2009302362A | 2009-12-24 | |||
| JP2002237411A | 2002-08-23 |
Attorney, Agent or Firm:
Moriaki Ogawa
Haruyuki Nishiyama
Mitsuji Sekiya
Tomijio Sasashima
Haruyuki Nishiyama
Mitsuji Sekiya
Tomijio Sasashima
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