JPS55123027A - Method and device for controlling clutch-operating pressure - Google Patents
Method and device for controlling clutch-operating pressureInfo
- Publication number
- JPS55123027A JPS55123027A JP2466879A JP2466879A JPS55123027A JP S55123027 A JPS55123027 A JP S55123027A JP 2466879 A JP2466879 A JP 2466879A JP 2466879 A JP2466879 A JP 2466879A JP S55123027 A JPS55123027 A JP S55123027A
- Authority
- JP
- Japan
- Prior art keywords
- clutch
- pressure
- valve
- operating
- result
- 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
Landscapes
- Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
Abstract
PURPOSE: To improve a controlling property in a halfly engaged clutch state, by keeping clutch-operating pressure at a constant high level at an initial stage, engaging a clutch, then sharply reducing the pressure to halfly engage the clutch, then slowly reducing the pressure and thereafter aliminating the pressure in the operating range of a brake.
CONSTITUTION: When an operating pedal 11 is released, the rod valve 23 of a clutch-operating pressure controller 4 is at the left end and a pressure regulating valve 22 is also at the left end. As a result, working oil from a hydraulic pump 3 is all conducted from an inlet port 32 to an outlet port 34 through an annular recess 31 and selectively supplied to clutches 6, 7 through a changeover valve 5. When the pedal 11 is depressed to thrust the valve 23 to a position to connect a port 42 and another annular recess 39 to each other, the valve 22 is appropriately moved rightward through the medium of a spring 25 and the cross-sectional area of the inlet port 32 is reduced. As a result, oil pressure at the outlet port 34, namely, clutch oil pressure is sharply reduced. When the valve 23 is thrusted further, the other valve 22 is moved rightward further. As a result, the clutch oil pressure is eliminated.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP54024668A JPS5849735B2 (en) | 1979-03-02 | 1979-03-02 | Clutch operating pressure control method and device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP54024668A JPS5849735B2 (en) | 1979-03-02 | 1979-03-02 | Clutch operating pressure control method and device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS55123027A true JPS55123027A (en) | 1980-09-22 |
JPS5849735B2 JPS5849735B2 (en) | 1983-11-07 |
Family
ID=12144513
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP54024668A Expired JPS5849735B2 (en) | 1979-03-02 | 1979-03-02 | Clutch operating pressure control method and device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5849735B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02117436U (en) * | 1988-11-18 | 1990-09-20 |
-
1979
- 1979-03-02 JP JP54024668A patent/JPS5849735B2/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02117436U (en) * | 1988-11-18 | 1990-09-20 |
Also Published As
Publication number | Publication date |
---|---|
JPS5849735B2 (en) | 1983-11-07 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE3369875D1 (en) | Improvments relating to clutches | |
EP0229841A4 (en) | Reducing valve. | |
JPS56138553A (en) | Hydraulic pressure controlling apparatus for automatic transmission for vehicle | |
US4046162A (en) | Modulation control valve for clutches | |
JPS5524222A (en) | Shock reducing apparatus for automatic transmission | |
GB1315408A (en) | Variable ratio transmission | |
JPS5447068A (en) | Clutch control equipment of variable volume type torque converter | |
JPS55123027A (en) | Method and device for controlling clutch-operating pressure | |
JPS5533911A (en) | Shock preventive device at speed change in automatic transmission | |
JPS5680507A (en) | Control circuit for actuator | |
SE7411717L (en) | ||
GB1196130A (en) | Improvements in Drive Transmission Devices | |
JPS5769161A (en) | Control method for hydraulic actuator apparatus | |
JPS5697650A (en) | Controller for power shift transmission | |
JPS5680527A (en) | Hydraulic buffer | |
ES8404480A1 (en) | Centrifugally responsive hydraulically applied friction clutch. | |
US4611699A (en) | Control valve for a hydraulic clutch | |
JPS5599473A (en) | Controlling apparatus of side clutch for combine etc. | |
JPS5673249A (en) | Controller for transmission | |
JPS57103954A (en) | Hydraulic control valve | |
JPS5680506A (en) | Control circuit for actuator | |
JPS56134663A (en) | Hydraulic device for turning hydraulic crane or the like | |
JPS5754730A (en) | Oil pressure control valve device | |
JPS5697629A (en) | Oil pressure controller for hydraulic multiple-disc clutch | |
JPS56167541A (en) | Deceleration-sensitive controller for hydraulic pressure of brake |