JPS643358A - Controller for transmission - Google Patents

Controller for transmission

Info

Publication number
JPS643358A
JPS643358A JP62157088A JP15708887A JPS643358A JP S643358 A JPS643358 A JP S643358A JP 62157088 A JP62157088 A JP 62157088A JP 15708887 A JP15708887 A JP 15708887A JP S643358 A JPS643358 A JP S643358A
Authority
JP
Japan
Prior art keywords
clutch
pressure
controller
travelable
detecting
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
JP62157088A
Other languages
Japanese (ja)
Other versions
JP2668359B2 (en
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
Priority to JP62157088A priority Critical patent/JP2668359B2/en
Application filed by Komatsu Ltd filed Critical Komatsu Ltd
Priority to AU19559/88A priority patent/AU612674B2/en
Priority to DE3887756T priority patent/DE3887756T2/en
Priority to EP88906034A priority patent/EP0372073B1/en
Priority to PCT/JP1988/000631 priority patent/WO1988010380A1/en
Priority to DE3856005T priority patent/DE3856005T2/en
Priority to US07/449,926 priority patent/US5113720A/en
Priority to EP93200012A priority patent/EP0538243B1/en
Publication of JPS643358A publication Critical patent/JPS643358A/en
Priority to AU77088/91A priority patent/AU632234B2/en
Priority to US07/842,061 priority patent/US5209141A/en
Application granted granted Critical
Publication of JP2668359B2 publication Critical patent/JP2668359B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Abstract

PURPOSE:To prevent the double engagement of a clutch from occurring by installing a pressure detecting device, detecting clutch pressure in each clutch, at every clutch, and comparing a clutch hydraulic pressure command to be inputted into a drive circuit, with output of the pressure detecting device at each clutch, then detecting something wrong in each clutch with this result. CONSTITUTION:At a controller 40, clutch pressure command signals C1-C6 are compared with driving currents I1-I6 of solenoids 21S-26S and output S1-S6 of pressure switches 51-56 respectively, and when the driving current fails to flow and clutch hydraulic pressure is left entered intact, whereas the clutch pressure command signal is outputted, or when it is reversed and so on, the controller detects it as abnormality. And, when trouble is detected, in the case where a vehicle is in a clutch state of making it travelable, the vehicle is made into a state of making the irreducible minimum of gear speed only useable, whereby it is made so as to be self-travelable up to a repairable spot or a retreating site.
JP62157088A 1987-06-24 1987-06-24 Transmission control device Expired - Lifetime JP2668359B2 (en)

Priority Applications (10)

Application Number Priority Date Filing Date Title
JP62157088A JP2668359B2 (en) 1987-06-24 1987-06-24 Transmission control device
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
PCT/JP1988/000631 WO1988010380A1 (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
AU19559/88A AU612674B2 (en) 1987-06-24 1988-06-24 Transmission controller
DE3887756T DE3887756T2 (en) 1987-06-24 1988-06-24 TRANSMISSION CONTROL.
AU77088/91A AU632234B2 (en) 1987-06-24 1991-05-15 Apparatus for controlling gear box
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
JP62157088A JP2668359B2 (en) 1987-06-24 1987-06-24 Transmission control device

Publications (2)

Publication Number Publication Date
JPS643358A true JPS643358A (en) 1989-01-09
JP2668359B2 JP2668359B2 (en) 1997-10-27

Family

ID=15641982

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62157088A Expired - Lifetime JP2668359B2 (en) 1987-06-24 1987-06-24 Transmission control device

Country Status (2)

Country Link
JP (1) JP2668359B2 (en)
AU (1) AU632234B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006010012A (en) * 2004-06-29 2006-01-12 Denso Corp Automatic transmission control device
JP2016133134A (en) * 2015-01-15 2016-07-25 株式会社デンソー Hydraulic control device

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008000640A1 (en) 2008-03-13 2009-09-17 Zf Friedrichshafen Ag Method for blocking inadmissible gearshifts in a transmission and circuit arrangement for a transmission
JP2016133133A (en) * 2015-01-15 2016-07-25 株式会社デンソー Hydraulic control device

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61241557A (en) * 1985-04-15 1986-10-27 Yanmar Diesel Engine Co Ltd Circuit for checking operation of automatic transmission

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2937367C2 (en) * 1979-09-15 1984-04-26 Zahnradfabrik Friedrichshafen Ag, 7990 Friedrichshafen Safety device for a step change gear
US4836057A (en) * 1985-02-19 1989-06-06 Kabushiki Kaisha Komatsu Seisakusho Method of controlling speed change clutches in a transmission
JP2791660B2 (en) * 1987-04-10 1998-08-27 株式会社小松製作所 Transmission control device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61241557A (en) * 1985-04-15 1986-10-27 Yanmar Diesel Engine Co Ltd Circuit for checking operation of automatic transmission

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006010012A (en) * 2004-06-29 2006-01-12 Denso Corp Automatic transmission control device
JP2016133134A (en) * 2015-01-15 2016-07-25 株式会社デンソー Hydraulic control device

Also Published As

Publication number Publication date
AU632234B2 (en) 1992-12-17
JP2668359B2 (en) 1997-10-27
AU7708891A (en) 1991-08-08

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