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JPS6444331A - Control device for working vehicle - Google Patents

Control device for working vehicle

Info

Publication number
JPS6444331A
JPS6444331A JP62202449A JP20244987A JPS6444331A JP S6444331 A JPS6444331 A JP S6444331A JP 62202449 A JP62202449 A JP 62202449A JP 20244987 A JP20244987 A JP 20244987A JP S6444331 A JPS6444331 A JP S6444331A
Authority
JP
Japan
Prior art keywords
over
change
speed
engine
speed ratio
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
JP62202449A
Other languages
Japanese (ja)
Other versions
JP2691404B2 (en
Inventor
Toshihiko Nishio
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.)
Yanmar Co Ltd
Original Assignee
Yanmar Diesel Engine 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 Yanmar Diesel Engine Co Ltd filed Critical Yanmar Diesel Engine Co Ltd
Priority to JP62202449A priority Critical patent/JP2691404B2/en
Publication of JPS6444331A publication Critical patent/JPS6444331A/en
Application granted granted Critical
Publication of JP2691404B2 publication Critical patent/JP2691404B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

  • Control Of Driving Devices And Active Controlling Of Vehicle (AREA)
  • Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
  • Control Of Transmission Device (AREA)
  • Arrangement And Mounting Of Devices That Control Transmission Of Motive Force (AREA)

Abstract

PURPOSE:To maintain the vehicle speed constant in order to smoothly carry out a working process by controlling the change-over of the running speed ratio between large and small values in accordance with the degree of engine load, and by changing the rotational speed of the engine so that the vehicle speed does not alter before and after the above-mentioned change-over. CONSTITUTION:A working vehicle incorporates a running speed change-over device 7 and a change-over device 6 such as a drive change-over device for changing over the drive mode between a two wheel drive mode and a four wheel drive mode, or the like. In this arrangement, a sensor 1 detects an engine load, and means 2, 3 judge whether thus detected engine load is high or low. Further, a means 4 controls at least the running speed change-over device 7 so that the speed ratio is changed over into a large or small value in accordance with the level of thus detected load. Further, a means 5 controls a governor device 8 to change the engine speed so that the vehicle speed does not alter before and after the change-over of the speed ratio when the speed ratio is changed over.
JP62202449A 1987-08-12 1987-08-12 Control device for work vehicle Expired - Fee Related JP2691404B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62202449A JP2691404B2 (en) 1987-08-12 1987-08-12 Control device for work vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62202449A JP2691404B2 (en) 1987-08-12 1987-08-12 Control device for work vehicle

Publications (2)

Publication Number Publication Date
JPS6444331A true JPS6444331A (en) 1989-02-16
JP2691404B2 JP2691404B2 (en) 1997-12-17

Family

ID=16457709

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62202449A Expired - Fee Related JP2691404B2 (en) 1987-08-12 1987-08-12 Control device for work vehicle

Country Status (1)

Country Link
JP (1) JP2691404B2 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5031479A (en) * 1989-06-12 1991-07-16 Hitachi, Ltd. Automatic gear change control apparatus for automobile and method of controlling same
JPH07132754A (en) * 1993-11-09 1995-05-23 Yanmar Agricult Equip Co Ltd Load control mechanism for tractor
JP2008133896A (en) * 2006-11-28 2008-06-12 Kubota Corp Working vehicle
JP2018127214A (en) * 2018-04-06 2018-08-16 ヤンマー株式会社 Work vehicle
JP2019011766A (en) * 2018-09-18 2019-01-24 ヤンマー株式会社 Working vehicle
JP2019049269A (en) * 2018-12-05 2019-03-28 ヤンマー株式会社 Work vehicle

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57141398A (en) * 1981-02-25 1982-09-01 Toyoda Automatic Loom Works Controller for work speed in industrial car

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57141398A (en) * 1981-02-25 1982-09-01 Toyoda Automatic Loom Works Controller for work speed in industrial car

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5031479A (en) * 1989-06-12 1991-07-16 Hitachi, Ltd. Automatic gear change control apparatus for automobile and method of controlling same
JPH07132754A (en) * 1993-11-09 1995-05-23 Yanmar Agricult Equip Co Ltd Load control mechanism for tractor
JP2008133896A (en) * 2006-11-28 2008-06-12 Kubota Corp Working vehicle
JP2018127214A (en) * 2018-04-06 2018-08-16 ヤンマー株式会社 Work vehicle
JP2019011766A (en) * 2018-09-18 2019-01-24 ヤンマー株式会社 Working vehicle
JP2019049269A (en) * 2018-12-05 2019-03-28 ヤンマー株式会社 Work vehicle

Also Published As

Publication number Publication date
JP2691404B2 (en) 1997-12-17

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Legal Events

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