JPS57172866A - Fluid pressure control unit for dual piping system - Google Patents
Fluid pressure control unit for dual piping systemInfo
- Publication number
- JPS57172866A JPS57172866A JP5614581A JP5614581A JPS57172866A JP S57172866 A JPS57172866 A JP S57172866A JP 5614581 A JP5614581 A JP 5614581A JP 5614581 A JP5614581 A JP 5614581A JP S57172866 A JPS57172866 A JP S57172866A
- Authority
- JP
- Japan
- Prior art keywords
- fluid pressure
- balance piston
- active system
- air vent
- piston
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T11/00—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant
- B60T11/10—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant transmitting by fluid means, e.g. hydraulic
- B60T11/28—Valves specially adapted therefor
- B60T11/34—Pressure reducing or limiting valves
Landscapes
- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Hydraulic Control Valves For Brake Systems (AREA)
Abstract
PURPOSE:To stabilize the output fluid pressure of an active system, and to facilitate the working step of air vent by utilizing a retainer for limiting the displacement of a balance piston to a necessary and satispactory value. CONSTITUTION:A control piston 11 and a control spring 14 regulate the fluid pressure in an active system (a), and a balance piston 15 exposed to an output fluid pressure chamber a2 in the active system (a) regulates the fluid pressure in a follow-up system (b). The displacement of the balance piston 15 toward the output chamber a2 of the active system is limited by a retainer 24 to a value necessary for actuating a valve 17. Therefore, the volume of the output fluid chamber a2 does not greately change, even if the actuation of the balance piston 15 is delayed due to seal resistance or the like, duly causing occurrence of overshooting, thereby the output fluid pressure is stabilized. Further, the working step of air vent is facilitated, since the balance piston 15 is prevented from pushing the control piston during the air vent work.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5614581A JPS57172866A (en) | 1981-04-14 | 1981-04-14 | Fluid pressure control unit for dual piping system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5614581A JPS57172866A (en) | 1981-04-14 | 1981-04-14 | Fluid pressure control unit for dual piping system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS57172866A true JPS57172866A (en) | 1982-10-23 |
Family
ID=13018908
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5614581A Pending JPS57172866A (en) | 1981-04-14 | 1981-04-14 | Fluid pressure control unit for dual piping system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57172866A (en) |
-
1981
- 1981-04-14 JP JP5614581A patent/JPS57172866A/en active Pending
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