GB1284691A - A fluid pressure control system - Google Patents

A fluid pressure control system

Info

Publication number
GB1284691A
GB1284691A GB0225/71A GB122571A GB1284691A GB 1284691 A GB1284691 A GB 1284691A GB 0225/71 A GB0225/71 A GB 0225/71A GB 122571 A GB122571 A GB 122571A GB 1284691 A GB1284691 A GB 1284691A
Authority
GB
United Kingdom
Prior art keywords
pressure
controlled
machine
servopiston
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.)
Expired
Application number
GB0225/71A
Inventor
Hans-Juergen Van Der Kolk
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of GB1284691A publication Critical patent/GB1284691A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D16/00—Control of fluid pressure
    • G05D16/14—Control of fluid pressure with auxiliary non-electric power
    • G05D16/16—Control of fluid pressure with auxiliary non-electric power derived from the controlled fluid
    • G05D16/166—Control of fluid pressure with auxiliary non-electric power derived from the controlled fluid using pistons within the main valve
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/08—Regulating by delivery pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/08—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor
    • F15B11/10—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor in which the servomotor position is a function of the pressure also pressure regulators as operating means for such systems, the device itself may be a position indicating system
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/205—Systems with pumps
    • F15B2211/2053—Type of pump
    • F15B2211/20546—Type of pump variable capacity
    • F15B2211/20553—Type of pump variable capacity with pilot circuit, e.g. for controlling a swash plate
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/25—Pressure control functions

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Power Engineering (AREA)
  • Reciprocating Pumps (AREA)
  • Hydraulic Motors (AREA)
  • Control Of Fluid Pressure (AREA)
  • Control Of Positive-Displacement Pumps (AREA)
  • Control Of Fluid Gearings (AREA)

Abstract

1284691 Fluid-pressure servomotor systems ROBERT BOSCH G m b H 11 Jan 1971 27 June 1970] 1225/71 Heading G3P A hydraulic machine, such as a variable stroke pump, is adjusted by a servopiston 5 controlled by a pressure-responsive spring-loaded pilot valve 33, the effect of the spring-loading being varied by a lever 30 and a piston 13 subjected to the pressure drop across a throttle 26. Feed-back proportional to regulating speed is thus provided to compensate for time deviation in the machine controlled. Pressure P from the controlled machine is applied to both the servopiston and the control valve. The piston 13 abuts adjustably loaded discs 16, 17 and has its travel limited by rings 27, 28.
GB0225/71A 1970-06-27 1971-01-11 A fluid pressure control system Expired GB1284691A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19702031850 DE2031850A1 (en) 1970-06-27 1970-06-27 Pressure regulator

Publications (1)

Publication Number Publication Date
GB1284691A true GB1284691A (en) 1972-08-09

Family

ID=5775130

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0225/71A Expired GB1284691A (en) 1970-06-27 1971-01-11 A fluid pressure control system

Country Status (5)

Country Link
JP (1) JPS4948917B1 (en)
CH (1) CH518452A (en)
DE (1) DE2031850A1 (en)
FR (1) FR2099958A5 (en)
GB (1) GB1284691A (en)

Also Published As

Publication number Publication date
JPS4948917B1 (en) 1974-12-24
CH518452A (en) 1972-01-31
FR2099958A5 (en) 1972-03-17
DE2031850A1 (en) 1972-01-05

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees