JPS5754768A - Lockup control valve for torque converter - Google Patents

Lockup control valve for torque converter

Info

Publication number
JPS5754768A
JPS5754768A JP13025380A JP13025380A JPS5754768A JP S5754768 A JPS5754768 A JP S5754768A JP 13025380 A JP13025380 A JP 13025380A JP 13025380 A JP13025380 A JP 13025380A JP S5754768 A JPS5754768 A JP S5754768A
Authority
JP
Japan
Prior art keywords
pressure
solenoid
valve
torque converter
line
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
JP13025380A
Other languages
Japanese (ja)
Inventor
Nobuaki Miki
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 JP13025380A priority Critical patent/JPS5754768A/en
Publication of JPS5754768A publication Critical patent/JPS5754768A/en
Pending legal-status Critical Current

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  • Control Of Fluid Gearings (AREA)

Abstract

PURPOSE: To ensure safety by making an accurate control in accordance with the input even through the solenoid pressure controlled by a solenoid valve has changed and thereby preventing unitentional lockups of torque converter.
CONSTITUTION: The pressure receiving area in a spool 292 of a lockup control valve 290 is represented by A1; further, the pressure receiving area in an oil chamber 294 of the spool 293, A2; the load of a spring 291, F; line pressure, PL; solenoid pressure of oil line 114 controlled by solenoid valve 420, PS. The line pressure PL varies between PLmin and PLmax with changing discharge pressure of the pump and also regulated by a pressure regulator valve 102. For the solenoid pressure PS, on the other hand, the highest retaining pressure PSmax is determined from the mechanical restriction of solenoid valve 420. An accurate control according to the input can be made possible even through the solenoid pressure has changed, by setting as[A2/A1]>[PLmax-F/A1]/PSmax.
COPYRIGHT: (C)1982,JPO&Japio
JP13025380A 1980-09-18 1980-09-18 Lockup control valve for torque converter Pending JPS5754768A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13025380A JPS5754768A (en) 1980-09-18 1980-09-18 Lockup control valve for torque converter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13025380A JPS5754768A (en) 1980-09-18 1980-09-18 Lockup control valve for torque converter

Related Child Applications (2)

Application Number Title Priority Date Filing Date
JP13188981A Division JPS57127158A (en) 1981-08-22 1981-08-22 Hydraulic controlling device for automatic transmission with high gear clutch
JP56131888A Division JPS57127148A (en) 1981-08-22 1981-08-22 Hydraulic controlling device for automatic transmission

Publications (1)

Publication Number Publication Date
JPS5754768A true JPS5754768A (en) 1982-04-01

Family

ID=15029821

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13025380A Pending JPS5754768A (en) 1980-09-18 1980-09-18 Lockup control valve for torque converter

Country Status (1)

Country Link
JP (1) JPS5754768A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59183150A (en) * 1983-03-31 1984-10-18 Aisin Seiki Co Ltd Control device for automatic transmission fitted with high gear clutch

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55103149A (en) * 1979-01-30 1980-08-07 Aisin Warner Ltd Controller for controlling direct-coupled clutch of torque converter of automatic speed change gear

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55103149A (en) * 1979-01-30 1980-08-07 Aisin Warner Ltd Controller for controlling direct-coupled clutch of torque converter of automatic speed change gear

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59183150A (en) * 1983-03-31 1984-10-18 Aisin Seiki Co Ltd Control device for automatic transmission fitted with high gear clutch

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