JPS5743043A - Hydraulic pressure controller for automatic transmission - Google Patents

Hydraulic pressure controller for automatic transmission

Info

Publication number
JPS5743043A
JPS5743043A JP9898581A JP9898581A JPS5743043A JP S5743043 A JPS5743043 A JP S5743043A JP 9898581 A JP9898581 A JP 9898581A JP 9898581 A JP9898581 A JP 9898581A JP S5743043 A JPS5743043 A JP S5743043A
Authority
JP
Japan
Prior art keywords
shift down
speed
overdrive
oil
shift
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
JP9898581A
Other languages
Japanese (ja)
Other versions
JPS5825902B2 (en
Inventor
Shiro Sakakibara
Takayoshi Ito
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.)
Aisin AW Co Ltd
Original Assignee
Aisin AW 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 Aisin AW Co Ltd filed Critical Aisin AW Co Ltd
Priority to JP9898581A priority Critical patent/JPS5825902B2/en
Publication of JPS5743043A publication Critical patent/JPS5743043A/en
Publication of JPS5825902B2 publication Critical patent/JPS5825902B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Control Of Transmission Device (AREA)

Abstract

PURPOSE: To attain a positive shift down operation of an auxiliary transmission by communicating an oil hydraulic circuit to which a line pressure is supplied upon a shift down operation with a throttle pressure circuit adapted to act upon an overdrive shift valve by means of a check valve.
CONSTITUTION: When it is desired, during running at the fourth speed, to shift down to the third speed for engine brake and an overdrive change-over switch 500 is turned off, a spool 282 is operated by an elastic force of a spring 283 to close an opening 284 so that a line pressure of an oil passage 102 is supplied into oil chambers 275, 276 of an overdrive shift valve 270 by way of an oil passage 11, a check valve 320, another oil passage 120, further check valves 340, 330, and further oil passages 121, 122 whereupon a spool 271 and a sleeve 272 are held downwardly, thereby releasing a brake 400 and engaging a clutch 370 to effect a shift down operation to the third speed.
COPYRIGHT: (C)1982,JPO&Japio
JP9898581A 1981-06-25 1981-06-25 Automatic transmission hydraulic control device Expired JPS5825902B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9898581A JPS5825902B2 (en) 1981-06-25 1981-06-25 Automatic transmission hydraulic control device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9898581A JPS5825902B2 (en) 1981-06-25 1981-06-25 Automatic transmission hydraulic control device

Publications (2)

Publication Number Publication Date
JPS5743043A true JPS5743043A (en) 1982-03-10
JPS5825902B2 JPS5825902B2 (en) 1983-05-30

Family

ID=14234287

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9898581A Expired JPS5825902B2 (en) 1981-06-25 1981-06-25 Automatic transmission hydraulic control device

Country Status (1)

Country Link
JP (1) JPS5825902B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62174601U (en) * 1986-04-24 1987-11-06

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0531443Y2 (en) * 1987-10-14 1993-08-12

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62174601U (en) * 1986-04-24 1987-11-06

Also Published As

Publication number Publication date
JPS5825902B2 (en) 1983-05-30

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