JPS5754768A - Lockup control valve for torque converter - Google Patents
Lockup control valve for torque converterInfo
- 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
Links
Landscapes
- 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
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)
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)
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 |
-
1980
- 1980-09-18 JP JP13025380A patent/JPS5754768A/en active Pending
Patent Citations (1)
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)
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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