EP0105790A3 - Constant pressure relief valve for an air control valve - Google Patents

Constant pressure relief valve for an air control valve Download PDF

Info

Publication number
EP0105790A3
EP0105790A3 EP83401867A EP83401867A EP0105790A3 EP 0105790 A3 EP0105790 A3 EP 0105790A3 EP 83401867 A EP83401867 A EP 83401867A EP 83401867 A EP83401867 A EP 83401867A EP 0105790 A3 EP0105790 A3 EP 0105790A3
Authority
EP
European Patent Office
Prior art keywords
valve
constant pressure
pressure
air control
pressure relief
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.)
Withdrawn
Application number
EP83401867A
Other languages
German (de)
French (fr)
Other versions
EP0105790A2 (en
Inventor
John Edward Cook
Gary Michael Everingham
Brian John Mcgibbon
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.)
Canadian Fram Ltd
Original Assignee
Canadian Fram Ltd
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 Canadian Fram Ltd filed Critical Canadian Fram Ltd
Publication of EP0105790A2 publication Critical patent/EP0105790A2/en
Publication of EP0105790A3 publication Critical patent/EP0105790A3/en
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
    • F01N3/22—Control of additional air supply only, e.g. using by-passes or variable air pump drives
    • F01N3/227—Control of additional air supply only, e.g. using by-passes or variable air pump drives using pneumatically operated valves, e.g. membrane valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
    • F01N3/22—Control of additional air supply only, e.g. using by-passes or variable air pump drives

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Toxicology (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust Gas After Treatment (AREA)
  • Safety Valves (AREA)

Abstract

A constant pressure relief valve (10) for an air control valve maintains the pressure in a secondary air system below a predetermined value. A diaphragm (18) divides the valve housing (12) into two chambers (24 and 28) wherein the first chamber (24) contains the inlet orifice (22) controlled by a valve member (20) and an exhaust orifice (16). The second chamber (28) contains a reference pressure and a valve bias spring (32) cooperating together to provide the constant pressure. Due to back pressures at the exhaust orifice (16), the lift of valve member (20) is increased to increase flow through the relief valve (10) maintaining the constant relief pressure.
EP83401867A 1982-09-30 1983-09-23 Constant pressure relief valve for an air control valve Withdrawn EP0105790A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US43090682A 1982-09-30 1982-09-30
US430906 1982-09-30

Publications (2)

Publication Number Publication Date
EP0105790A2 EP0105790A2 (en) 1984-04-18
EP0105790A3 true EP0105790A3 (en) 1986-03-05

Family

ID=23709581

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83401867A Withdrawn EP0105790A3 (en) 1982-09-30 1983-09-23 Constant pressure relief valve for an air control valve

Country Status (4)

Country Link
EP (1) EP0105790A3 (en)
JP (1) JPS5989874A (en)
BR (1) BR8305496A (en)
CA (1) CA1188940A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2260595B (en) * 1991-10-17 1995-05-31 Dowty Aerospace Gloucester A pressure relief valve
EP3635282B1 (en) * 2017-06-09 2021-12-15 Buffo, Salvatore Safety valve for hydraulic systems
CN112268130A (en) * 2020-11-10 2021-01-26 北京新风航天装备有限公司 Backpressure system

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4152893A (en) * 1977-01-06 1979-05-08 Toyota Jidosha Kogyo Kabushiki Kaisha Internal combustion engine secondary air control system
US4345737A (en) * 1979-03-06 1982-08-24 Nippon Soken, Inc. Linear solenoid valve actuation device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4152893A (en) * 1977-01-06 1979-05-08 Toyota Jidosha Kogyo Kabushiki Kaisha Internal combustion engine secondary air control system
US4345737A (en) * 1979-03-06 1982-08-24 Nippon Soken, Inc. Linear solenoid valve actuation device

Also Published As

Publication number Publication date
CA1188940A (en) 1985-06-18
JPS5989874A (en) 1984-05-24
EP0105790A2 (en) 1984-04-18
BR8305496A (en) 1984-05-15

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Legal Events

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18W Application withdrawn

Withdrawal date: 19860827

RIN1 Information on inventor provided before grant (corrected)

Inventor name: MCGIBBON, BRIAN JOHN

Inventor name: EVERINGHAM, GARY MICHAEL

Inventor name: COOK, JOHN EDWARD