JPS6440746A - Clutch pressure controller of transmission - Google Patents

Clutch pressure controller of transmission

Info

Publication number
JPS6440746A
JPS6440746A JP62197711A JP19771187A JPS6440746A JP S6440746 A JPS6440746 A JP S6440746A JP 62197711 A JP62197711 A JP 62197711A JP 19771187 A JP19771187 A JP 19771187A JP S6440746 A JPS6440746 A JP S6440746A
Authority
JP
Japan
Prior art keywords
speed
speed change
vehicle
judged
stage
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
JP62197711A
Other languages
Japanese (ja)
Inventor
Yoshio Asayama
Makio Tsubota
Yasunori Okura
Takayuki Sato
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.)
Komatsu Ltd
Original Assignee
Komatsu 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 Komatsu Ltd filed Critical Komatsu Ltd
Priority to JP62197711A priority Critical patent/JPS6440746A/en
Priority to AU19559/88A priority patent/AU612674B2/en
Priority to DE3856005T priority patent/DE3856005T2/en
Priority to US07/449,926 priority patent/US5113720A/en
Priority to PCT/JP1988/000631 priority patent/WO1988010380A1/en
Priority to DE3887756T priority patent/DE3887756T2/en
Priority to EP93200012A priority patent/EP0538243B1/en
Priority to EP88906034A priority patent/EP0372073B1/en
Publication of JPS6440746A publication Critical patent/JPS6440746A/en
Priority to US07/842,061 priority patent/US5209141A/en
Pending legal-status Critical Current

Links

Landscapes

  • Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
  • Control Of Transmission Device (AREA)

Abstract

PURPOSE:To provide always smooth seed change under various traveling requirements by providing a control means for varying the time dependent pattern of electric command according to respective outputs of a vehicle detecting means, throttle opening detecting means, speed change interval measuring means and speed change stage discriminating means in the speed change. CONSTITUTION:A controller 70 detects vehicle speed v from the output of an output shaft rotation sensor 65 to judge the load condition (whether the vehicle is in hill climbing, digging operation or traveling on a flat ground) from the vehicle speed v and a throttle opening signal TH. Also, an speed change interval is judged by an internal timer so that the condition of oil remaining in clutches F, R, 1-4 is judged from the speed change interval and the vehicle speed v. Further, the speed change stage (speed change from what speed stage to what speed) is judged from a lever position signal SH or the like. The controller 70 varies properly command signals C1-C6 applied to respective pressure controlling valves 51-56 according to said judging results to give any oil pressure patterns to respective clutches F, R, 1-4.
JP62197711A 1987-06-24 1987-08-07 Clutch pressure controller of transmission Pending JPS6440746A (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
JP62197711A JPS6440746A (en) 1987-08-07 1987-08-07 Clutch pressure controller of transmission
AU19559/88A AU612674B2 (en) 1987-06-24 1988-06-24 Transmission controller
DE3856005T DE3856005T2 (en) 1987-06-24 1988-06-24 Arrangement for controlling a transmission
US07/449,926 US5113720A (en) 1987-06-24 1988-06-24 Apparatus for controlling gear box
PCT/JP1988/000631 WO1988010380A1 (en) 1987-06-24 1988-06-24 Transmission controller
DE3887756T DE3887756T2 (en) 1987-06-24 1988-06-24 TRANSMISSION CONTROL.
EP93200012A EP0538243B1 (en) 1987-06-24 1988-06-24 Apparatus for controlling gear box
EP88906034A EP0372073B1 (en) 1987-06-24 1988-06-24 Transmission controller
US07/842,061 US5209141A (en) 1987-06-24 1992-02-26 Apparatus for controlling gear box

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62197711A JPS6440746A (en) 1987-08-07 1987-08-07 Clutch pressure controller of transmission

Publications (1)

Publication Number Publication Date
JPS6440746A true JPS6440746A (en) 1989-02-13

Family

ID=16379088

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62197711A Pending JPS6440746A (en) 1987-06-24 1987-08-07 Clutch pressure controller of transmission

Country Status (1)

Country Link
JP (1) JPS6440746A (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08285068A (en) * 1995-04-13 1996-11-01 Caterpillar Inc Adaptive control method of transmission
US6692409B2 (en) 2001-02-28 2004-02-17 Kubota Corporation Hydraulic change speed system for a working vehicle
JP2005351484A (en) * 1995-12-11 2005-12-22 Denso Corp Automatic transmission control device for vehicle
WO2006118139A1 (en) * 2005-04-27 2006-11-09 Tcm Corporation Clutch controlling apparatus and clutch controlling method
JP2007170486A (en) * 2005-12-20 2007-07-05 Iseki & Co Ltd Vehicle forward / reverse clutch control device
JP2009103309A (en) * 2008-12-27 2009-05-14 Iseki & Co Ltd Vehicle forward / reverse clutch control device
JP2012021649A (en) * 2011-09-26 2012-02-02 Iseki & Co Ltd Vehicular forward-backward travel clutch control device
JP2021054374A (en) * 2019-10-02 2021-04-08 株式会社 神崎高級工機製作所 Reduction reverser
WO2021065482A1 (en) * 2019-10-02 2021-04-08 株式会社神崎高級工機製作所 Reduction/reverse gear
JP2021063572A (en) * 2019-10-16 2021-04-22 株式会社 神崎高級工機製作所 Reduction and reverse gear

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08285068A (en) * 1995-04-13 1996-11-01 Caterpillar Inc Adaptive control method of transmission
JP2005351484A (en) * 1995-12-11 2005-12-22 Denso Corp Automatic transmission control device for vehicle
US6692409B2 (en) 2001-02-28 2004-02-17 Kubota Corporation Hydraulic change speed system for a working vehicle
WO2006118139A1 (en) * 2005-04-27 2006-11-09 Tcm Corporation Clutch controlling apparatus and clutch controlling method
US8290670B2 (en) 2005-04-27 2012-10-16 Hitachi Construction Machinery Co., Ltd. Clutch control device and clutch control method
JP2007170486A (en) * 2005-12-20 2007-07-05 Iseki & Co Ltd Vehicle forward / reverse clutch control device
JP2009103309A (en) * 2008-12-27 2009-05-14 Iseki & Co Ltd Vehicle forward / reverse clutch control device
JP2012021649A (en) * 2011-09-26 2012-02-02 Iseki & Co Ltd Vehicular forward-backward travel clutch control device
JP2021054374A (en) * 2019-10-02 2021-04-08 株式会社 神崎高級工機製作所 Reduction reverser
WO2021065482A1 (en) * 2019-10-02 2021-04-08 株式会社神崎高級工機製作所 Reduction/reverse gear
JP2021063572A (en) * 2019-10-16 2021-04-22 株式会社 神崎高級工機製作所 Reduction and reverse gear

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