JPS6469851A - Control device for automatic transmission - Google Patents

Control device for automatic transmission

Info

Publication number
JPS6469851A
JPS6469851A JP62228097A JP22809787A JPS6469851A JP S6469851 A JPS6469851 A JP S6469851A JP 62228097 A JP62228097 A JP 62228097A JP 22809787 A JP22809787 A JP 22809787A JP S6469851 A JPS6469851 A JP S6469851A
Authority
JP
Japan
Prior art keywords
motion
pressure regulating
release
oil
speed change
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
JP62228097A
Other languages
Japanese (ja)
Other versions
JP2708431B2 (en
Inventor
Takuji Fujiwara
Hidehiko Mishima
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.)
Mazda Motor Corp
Original Assignee
Mazda Motor Corp
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 Mazda Motor Corp filed Critical Mazda Motor Corp
Priority to JP62228097A priority Critical patent/JP2708431B2/en
Publication of JPS6469851A publication Critical patent/JPS6469851A/en
Application granted granted Critical
Publication of JP2708431B2 publication Critical patent/JP2708431B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Control Of Transmission Device (AREA)

Abstract

PURPOSE:To optimize a timing, by a method wherein, when a speed change step is shifted through the inverse motion of two friction elements to each other, the one friction element is motioned by a switching valve as a servo mechanism for the fastening/release motion of the other and a pressure regulating valve are utilized. CONSTITUTION:During shift down from a forward second step to a first step, the one friction element 13 is motioned to the fastening side through shifting of a switching valve 37 to the oil feed side, and the other friction element 16 performs a release motion through control of an increase of the oil pressure of an oil chamber 42b on the hydraulic release side of a servo mechanism 42 by means of a pressure regulating valve 47. In this case, a timing between the pressure regulating motion of the pressure regulating valve 47 and the shifting motion to the oil feed side of the switching valve 37 is properly controlled according to an oil temperature and a car speed by means of a timing control means 50. Thereby, the excellent fastening/release motions of the two friction elements 13 and 16 are performed therebetween. A speed change shock and a sudden increase of the number of revolutions are prevented from occurring, and smooth speed change is practicable.
JP62228097A 1987-09-11 1987-09-11 Control device for automatic transmission Expired - Lifetime JP2708431B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62228097A JP2708431B2 (en) 1987-09-11 1987-09-11 Control device for automatic transmission

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62228097A JP2708431B2 (en) 1987-09-11 1987-09-11 Control device for automatic transmission

Publications (2)

Publication Number Publication Date
JPS6469851A true JPS6469851A (en) 1989-03-15
JP2708431B2 JP2708431B2 (en) 1998-02-04

Family

ID=16871141

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62228097A Expired - Lifetime JP2708431B2 (en) 1987-09-11 1987-09-11 Control device for automatic transmission

Country Status (1)

Country Link
JP (1) JP2708431B2 (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6241454A (en) * 1985-08-15 1987-02-23 Nissan Motor Co Ltd Speed change control device for automatic speed change gear
JPS63128351U (en) * 1987-02-16 1988-08-22

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6241454A (en) * 1985-08-15 1987-02-23 Nissan Motor Co Ltd Speed change control device for automatic speed change gear
JPS63128351U (en) * 1987-02-16 1988-08-22

Also Published As

Publication number Publication date
JP2708431B2 (en) 1998-02-04

Similar Documents

Publication Publication Date Title
US4942787A (en) Apparatus for and method of controlling hydraulic clutch operation in an automatic transmission
JPS55149454A (en) Automatic transmission controller
JPH1182712A (en) Hydraulic control device of automatic transmission
ES378982A1 (en) Transmission control mechanism
EP0577174B1 (en) Transmission apparatus
JPS5335864A (en) Hydraulic control system in vehicle automatic speed change gear
EP0640781A1 (en) Control apparatus for hydraulically operated vehicular transmission
US3800627A (en) Hydraulic control device
EP0358219A3 (en) Hydraulic control system for automatic transmission
JPS52100055A (en) Speed changing gear
JPS6469851A (en) Control device for automatic transmission
JPH02286961A (en) Liquid pressure controller of automatic transmission
JPH03177656A (en) Oil pressure control device for automatic transmission
SE8406498L (en) VEHICLE TRANSMISSION CONTROL SYSTEM
EP0394498A4 (en) Speed change control method for hydraulically operated multistep transmissions
JPS57177450A (en) Oil-hydraulic controlling method of automatic speed- changer and a device for the same
JP2646864B2 (en) Hydraulic control device for automatic transmission
JPS5737141A (en) Speed change shock reducing device for automatic transmission
JPS6474345A (en) Controller for hydraulic operation type transmission for vehicle
JPS6435153A (en) Hydraulic control device for automatic transmission
JPS5479360A (en) Oil pressure controller of automatic transmission
JPS6465354A (en) Speed change control device for automatic transmission
US5046384A (en) Shift control system for automatic power transmission
JPS56101446A (en) Oil-hydraulic clutch type speed-changing device
JP3563131B2 (en) Automatic transmission jump control system