JPS644539A - Power change-over device for four-wheel-drive vehicle - Google Patents

Power change-over device for four-wheel-drive vehicle

Info

Publication number
JPS644539A
JPS644539A JP16148187A JP16148187A JPS644539A JP S644539 A JPS644539 A JP S644539A JP 16148187 A JP16148187 A JP 16148187A JP 16148187 A JP16148187 A JP 16148187A JP S644539 A JPS644539 A JP S644539A
Authority
JP
Japan
Prior art keywords
vehicle
wheel drive
detecting means
power
speed
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.)
Granted
Application number
JP16148187A
Other languages
Japanese (ja)
Other versions
JPH0723061B2 (en
Inventor
Tetsuo Hamada
Katsuhiko Masuda
Kazuhiko Shimada
Kazunori Shibuya
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.)
Honda Motor Co Ltd
Original Assignee
Honda Motor Co 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 Honda Motor Co Ltd filed Critical Honda Motor Co Ltd
Priority to JP16148187A priority Critical patent/JPH0723061B2/en
Priority to US07/203,970 priority patent/US4886141A/en
Publication of JPS644539A publication Critical patent/JPS644539A/en
Publication of JPH0723061B2 publication Critical patent/JPH0723061B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Abstract

PURPOSE:To prevent allocation of brake from changing in a four wheel drive vehicle using a viscous coupling, by providing a power change-over device for cutting off the transmission of power between a front wheel drive vehicle and a rear wheel drive vehicle only when the vehicle is braked at a vehicle speed other than a low speed range. CONSTITUTION:A front drive device 11 is directly coupled to an engine 1, and is coupled to a rear wheel drive device 15 through a viscous coupling 8 using shearing stress of highly viscous fluid. In such a four wheel drive vehicle, there is provided a clutch 9 for turning on and off the transmission of power between both drive devices 11, 15. Further, there are provided a brake operation detecting means 22 and a vehicle speed detecting means 23 (or a speed shift stage position detecting means). Further, a control means 21 receives detection signals from these detecting means 22, 23, and delivers a signal for cutting off the transmission of power between both drive devices 11, 15 to the clutch 9 when a detected vehicle speed is in a range other than a low speed range (or when a detected speed shift stage position is other than a low speed stage position) and brake operation is detected.
JP16148187A 1987-06-08 1987-06-29 Power switch for four-wheel drive vehicle Expired - Fee Related JPH0723061B2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP16148187A JPH0723061B2 (en) 1987-06-29 1987-06-29 Power switch for four-wheel drive vehicle
US07/203,970 US4886141A (en) 1987-06-08 1988-06-08 Four wheel drive vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16148187A JPH0723061B2 (en) 1987-06-29 1987-06-29 Power switch for four-wheel drive vehicle

Publications (2)

Publication Number Publication Date
JPS644539A true JPS644539A (en) 1989-01-09
JPH0723061B2 JPH0723061B2 (en) 1995-03-15

Family

ID=15735905

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16148187A Expired - Fee Related JPH0723061B2 (en) 1987-06-08 1987-06-29 Power switch for four-wheel drive vehicle

Country Status (1)

Country Link
JP (1) JPH0723061B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06247169A (en) * 1993-02-22 1994-09-06 Mazda Motor Corp Drive device for vehicle
US20100222975A1 (en) * 2007-06-01 2010-09-02 Miller Jeffrey D Automatic Control Of Mechanical Front Wheel Drive Using Speed Ratio

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06247169A (en) * 1993-02-22 1994-09-06 Mazda Motor Corp Drive device for vehicle
US20100222975A1 (en) * 2007-06-01 2010-09-02 Miller Jeffrey D Automatic Control Of Mechanical Front Wheel Drive Using Speed Ratio
US8504249B2 (en) * 2007-06-01 2013-08-06 Deere & Company Automatic control of mechanical front wheel drive using speed ratio

Also Published As

Publication number Publication date
JPH0723061B2 (en) 1995-03-15

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Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees