JPS57149647A - Hydraulic oil pressure circuit of hydraulic speed change gear - Google Patents
Hydraulic oil pressure circuit of hydraulic speed change gearInfo
- Publication number
- JPS57149647A JPS57149647A JP3397581A JP3397581A JPS57149647A JP S57149647 A JPS57149647 A JP S57149647A JP 3397581 A JP3397581 A JP 3397581A JP 3397581 A JP3397581 A JP 3397581A JP S57149647 A JPS57149647 A JP S57149647A
- Authority
- JP
- Japan
- Prior art keywords
- pressure receiving
- hydraulic
- clutch
- speed change
- chamber
- 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 speed change shock by moderating a sudden increase of hydraulic oil pressure after the pressure receiving clutch chamber is filled with pressurized oil.
CONSTITUTION: An accumulator valve 12 is connected to a pressure receiving clutch chamber 4'L of a low-speed hydraulic clutch 4L. A throttle 14 is disposed in a pipe 13 which is connected to the clutch chamber 4'L of a first-speed hydraulic clutch 4I. A bypass passage 16 containing a check valve 15 which inhibits a current toward the pressure receiving clutch chamber 4'L extends from the forward point to the backward point of the throttle 14 and is connected to the accumulator valve 12. Pressurized oil, which is fed into the pressure receiving clutch chambers 4'I, 4'R when a speed is changed into the forward first-gear, is gradually raised inside the pressure receiving clutch chamber 4'I with the aid of the throttle 14 disposed in the pipe 13 which is connected to the pressure receiving chamber 4'I. Thereby, the hydraulic clutch 4I is moderately actuated ON, so that a resultant speed change shock may be reduced.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3397581A JPS57149647A (en) | 1981-03-11 | 1981-03-11 | Hydraulic oil pressure circuit of hydraulic speed change gear |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3397581A JPS57149647A (en) | 1981-03-11 | 1981-03-11 | Hydraulic oil pressure circuit of hydraulic speed change gear |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS57149647A true JPS57149647A (en) | 1982-09-16 |
Family
ID=12401482
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3397581A Pending JPS57149647A (en) | 1981-03-11 | 1981-03-11 | Hydraulic oil pressure circuit of hydraulic speed change gear |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57149647A (en) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4913734A (en) * | 1972-05-17 | 1974-02-06 | ||
JPS53100360A (en) * | 1977-02-14 | 1978-09-01 | Toyota Motor Corp | Oil pressure controlling system in automatic transmission |
-
1981
- 1981-03-11 JP JP3397581A patent/JPS57149647A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4913734A (en) * | 1972-05-17 | 1974-02-06 | ||
JPS53100360A (en) * | 1977-02-14 | 1978-09-01 | Toyota Motor Corp | Oil pressure controlling system in automatic transmission |
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