JPS57146943A - Oil pressure controller for automatic speed changer - Google Patents
Oil pressure controller for automatic speed changerInfo
- Publication number
- JPS57146943A JPS57146943A JP3181681A JP3181681A JPS57146943A JP S57146943 A JPS57146943 A JP S57146943A JP 3181681 A JP3181681 A JP 3181681A JP 3181681 A JP3181681 A JP 3181681A JP S57146943 A JPS57146943 A JP S57146943A
- Authority
- JP
- Japan
- Prior art keywords
- spool
- oil
- shift
- line pressure
- 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.)
- Pending
Links
Landscapes
- Control Of Transmission Device (AREA)
Abstract
PURPOSE: To reduce a shock of deceleration in case of jumping over an intermediate speed change shift to perform a speed change, by such constitution that line pressure oil input to a shift valve is leaked to maintain a spool to its intermediate state and keep the spool to speed change shift before shifting operation.
CONSTITUTION: Solenoid pressure PS of high level is applied to an oil chamber 234 to place a spool 232 in a left position, and line pressure PL is fed to an oil passage 4 to press the spool rightward, if the spool comes to a position as shown in the drawing, the line pressure fed from the oil passage 4 is leaked to an oil passage 4A from a gap S1 between the point end part 232 of a land 232A and valve wall, and an oil chamber 233 generates oil pressure Pl dropped by a prescribed level from the line pressure. In consequence, the spool 232 is temporarily stopped at an intermediate position. At this time, a 2-3 shift valve 230 is maintained to a 3, 4 speed shift state before shifting operation.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3181681A JPS57146943A (en) | 1981-03-04 | 1981-03-04 | Oil pressure controller for automatic speed changer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3181681A JPS57146943A (en) | 1981-03-04 | 1981-03-04 | Oil pressure controller for automatic speed changer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS57146943A true JPS57146943A (en) | 1982-09-10 |
Family
ID=12341610
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3181681A Pending JPS57146943A (en) | 1981-03-04 | 1981-03-04 | Oil pressure controller for automatic speed changer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57146943A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59190546A (en) * | 1983-04-11 | 1984-10-29 | Suzuki Motor Co Ltd | Control device for automatic transmission |
| WO1988000302A1 (en) * | 1986-07-01 | 1988-01-14 | Aisin-Warner Kabushiki Kaisha | Hydraulic control apparatus for automatic transmissions |
-
1981
- 1981-03-04 JP JP3181681A patent/JPS57146943A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59190546A (en) * | 1983-04-11 | 1984-10-29 | Suzuki Motor Co Ltd | Control device for automatic transmission |
| JPH0524379B2 (en) * | 1983-04-11 | 1993-04-07 | Suzuki Co Ltd | |
| WO1988000302A1 (en) * | 1986-07-01 | 1988-01-14 | Aisin-Warner Kabushiki Kaisha | Hydraulic control apparatus for automatic transmissions |
| DE3790329T1 (en) * | 1986-07-01 | 1988-08-04 | ||
| US4903550A (en) * | 1986-07-01 | 1990-02-27 | Aisin-Warner Kabushiki Kaisha | Hydraulic control device for automatic transmission |
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