JPS57149648A - Hydraulic oil pressure circuit of hydraulic speed change gear - Google Patents
Hydraulic oil pressure circuit of hydraulic speed change gearInfo
- Publication number
- JPS57149648A JPS57149648A JP3397681A JP3397681A JPS57149648A JP S57149648 A JPS57149648 A JP S57149648A JP 3397681 A JP3397681 A JP 3397681A JP 3397681 A JP3397681 A JP 3397681A JP S57149648 A JPS57149648 A JP S57149648A
- Authority
- JP
- Japan
- Prior art keywords
- speed change
- receiving chamber
- hydraulic
- pressure receiving
- gear
- 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 shortening the neutral period of a speed change gear and moderating a peak of oil pressure from the start of its gradual increase.
CONSTITUTION: An accumulator valve 12 is connected to a pressure receiving chamber 4'L of a low-speed hydraulic clutch 4L. A throttle 14 is disposed in a pipe 13 which is connected to the pressure receiving chamber 4'I of a first gear hydraulic clutch 4I. A bypass passage 16 containing a check valve 15 is disposed in parallel with the throttle 14 and the accumulator valve 12 is connected between the throttle 14 and the pressure receiving chamber 4'I. For changing speed from forward first gear to the second gear, hydraulic oil inside the pressure receiving chamber 4'I flows into a drain, then the flow speed is decelerated through the throttle 14. As the result, a neutral period of the speed change gear may be shortened. In addition, when the hydraulic oil is supplied into the pressure receiving chamber 4'L, its peak pressure may be moderated by the accumulator valve 12.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3397681A JPS57149648A (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 |
---|---|---|---|
JP3397681A JPS57149648A (en) | 1981-03-11 | 1981-03-11 | Hydraulic oil pressure circuit of hydraulic speed change gear |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS57149648A true JPS57149648A (en) | 1982-09-16 |
Family
ID=12401514
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3397681A Pending JPS57149648A (en) | 1981-03-11 | 1981-03-11 | Hydraulic oil pressure circuit of hydraulic speed change gear |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57149648A (en) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5166968A (en) * | 1974-08-30 | 1976-06-10 | Borg Warner | |
JPS5372964A (en) * | 1976-12-09 | 1978-06-28 | Mitsubishi Motors Corp | Variable speed gear for hydraulic automatic speed gear |
-
1981
- 1981-03-11 JP JP3397681A patent/JPS57149648A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5166968A (en) * | 1974-08-30 | 1976-06-10 | Borg Warner | |
JPS5372964A (en) * | 1976-12-09 | 1978-06-28 | Mitsubishi Motors Corp | Variable speed gear for hydraulic automatic speed gear |
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