JPS6436526A - Switching control device for 4-wheel-drive vehicle - Google Patents

Switching control device for 4-wheel-drive vehicle

Info

Publication number
JPS6436526A
JPS6436526A JP19184587A JP19184587A JPS6436526A JP S6436526 A JPS6436526 A JP S6436526A JP 19184587 A JP19184587 A JP 19184587A JP 19184587 A JP19184587 A JP 19184587A JP S6436526 A JPS6436526 A JP S6436526A
Authority
JP
Japan
Prior art keywords
vibration
road surface
vehicle
road
level
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP19184587A
Other languages
Japanese (ja)
Inventor
Hosei Suzuki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Subaru Corp
Original Assignee
Fuji Heavy Industries Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fuji Heavy Industries Ltd filed Critical Fuji Heavy Industries Ltd
Priority to JP19184587A priority Critical patent/JPS6436526A/en
Publication of JPS6436526A publication Critical patent/JPS6436526A/en
Pending legal-status Critical Current

Links

Landscapes

  • Arrangement And Mounting Of Devices That Control Transmission Of Motive Force (AREA)

Abstract

PURPOSE:To enable the optical running in accordance with a road surface condition to be automatically ensured by detecting the vibration of a vehicle while deciding the road surface condition to be a bad road, when the vibration in a certain level or more continues in running for the predetermined time or more, and controlling the vehicle so as to automatically switch its operation of 2WD to 4WD. CONSTITUTION:While a vehicle is in running, a vehicle vibration detecting means 51 in a control circuit 50 detects a level of vibration from a moving stroke of a suspension detected by a stroke sensor 44. Next a road surface condition decision means 52 compares the detected vibration with the preset vibration level from a setting means 53, deciding a road surface to be bad when the vibration increases to the preset vibration level or more. And setting a timer means 53 when the decision is made of the road surface changing from a good road to a bad road, generating a switching instruction when the time reaches the preset time and giving a switching signal from 2WD to 4WD to a driving circuit 55 from a switching means 54, a transfer is switched to a 4WD side by exciting a solenoid 32.
JP19184587A 1987-07-31 1987-07-31 Switching control device for 4-wheel-drive vehicle Pending JPS6436526A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP19184587A JPS6436526A (en) 1987-07-31 1987-07-31 Switching control device for 4-wheel-drive vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP19184587A JPS6436526A (en) 1987-07-31 1987-07-31 Switching control device for 4-wheel-drive vehicle

Publications (1)

Publication Number Publication Date
JPS6436526A true JPS6436526A (en) 1989-02-07

Family

ID=16281470

Family Applications (1)

Application Number Title Priority Date Filing Date
JP19184587A Pending JPS6436526A (en) 1987-07-31 1987-07-31 Switching control device for 4-wheel-drive vehicle

Country Status (1)

Country Link
JP (1) JPS6436526A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003093047A1 (en) * 2002-05-02 2003-11-13 Ford Global Technologies, Llc. Vehicle differential control
US10166865B2 (en) 2010-10-18 2019-01-01 Ford Global Technologies, Llc Automatic control of driveline states

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003093047A1 (en) * 2002-05-02 2003-11-13 Ford Global Technologies, Llc. Vehicle differential control
US7290634B2 (en) 2002-05-02 2007-11-06 Ford Global Technologies, Llc Vehicle differential control
US10166865B2 (en) 2010-10-18 2019-01-01 Ford Global Technologies, Llc Automatic control of driveline states

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