JPS6487951A - Hydraulic speed change control device for automatic transmission - Google Patents
Hydraulic speed change control device for automatic transmissionInfo
- Publication number
- JPS6487951A JPS6487951A JP24627687A JP24627687A JPS6487951A JP S6487951 A JPS6487951 A JP S6487951A JP 24627687 A JP24627687 A JP 24627687A JP 24627687 A JP24627687 A JP 24627687A JP S6487951 A JPS6487951 A JP S6487951A
- Authority
- JP
- Japan
- Prior art keywords
- speed change
- throttle opening
- speed
- sensor
- reducing
- 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
Links
Abstract
PURPOSE:To suppress a speed change shock by providing a control circuit actuating a solenoid valve in the point of time starting the action and ending it preset corresponding to a throttle opening and reducing an output pressure of oil in a regulator valve. CONSTITUTION:When a card speed reaches the speed change car speed with a certain throttle opening, an electronic control unit 28, being based on signals of a throttle opening sensor 30, car speed sensor 32, select range sensor 34 and a shift position condition sensor serving as the speed change detecting device, outputs a duty ratio signal to a solenoid valve 11, actuating it in a specified manner for the time from the start of speed change to its end point and reducing an output pressure of a regulator valve 4. The time interval between the start and end points is set such that the larger is increased the speed change in proportion to the throttle opening the longer the interval increases. In this way, a speed change shock can be reduced over the total region of the throttle opening.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62246276A JP2705071B2 (en) | 1987-09-30 | 1987-09-30 | Transmission hydraulic control unit for automatic transmission |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62246276A JP2705071B2 (en) | 1987-09-30 | 1987-09-30 | Transmission hydraulic control unit for automatic transmission |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6487951A true JPS6487951A (en) | 1989-04-03 |
JP2705071B2 JP2705071B2 (en) | 1998-01-26 |
Family
ID=17146129
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62246276A Expired - Fee Related JP2705071B2 (en) | 1987-09-30 | 1987-09-30 | Transmission hydraulic control unit for automatic transmission |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2705071B2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5124923A (en) * | 1989-11-08 | 1992-06-23 | Aisin Seiki Kabushiki Kaisha | Retarding apparatus for automotive vehicles |
US5357444A (en) * | 1990-02-28 | 1994-10-18 | Aisin Seiki Kabushiki Kaisha | Retarding control apparatus which operates on the basis of signals such as a shift lever position signal |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61134440U (en) * | 1985-02-12 | 1986-08-21 |
-
1987
- 1987-09-30 JP JP62246276A patent/JP2705071B2/en not_active Expired - Fee Related
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61134440U (en) * | 1985-02-12 | 1986-08-21 |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5124923A (en) * | 1989-11-08 | 1992-06-23 | Aisin Seiki Kabushiki Kaisha | Retarding apparatus for automotive vehicles |
US5357444A (en) * | 1990-02-28 | 1994-10-18 | Aisin Seiki Kabushiki Kaisha | Retarding control apparatus which operates on the basis of signals such as a shift lever position signal |
US5400251A (en) * | 1990-02-28 | 1995-03-21 | Aisin Seiki Kabushiki Kaisha | Retarding control apparatus |
Also Published As
Publication number | Publication date |
---|---|
JP2705071B2 (en) | 1998-01-26 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
LAPS | Cancellation because of no payment of annual fees |