ITRM910461A0 - Valvola di non ritorno per una conduttura di gas. - Google Patents

Valvola di non ritorno per una conduttura di gas.

Info

Publication number
ITRM910461A0
ITRM910461A0 IT91RM461A ITRM910461A ITRM910461A0 IT RM910461 A0 ITRM910461 A0 IT RM910461A0 IT 91RM461 A IT91RM461 A IT 91RM461A IT RM910461 A ITRM910461 A IT RM910461A IT RM910461 A0 ITRM910461 A0 IT RM910461A0
Authority
IT
Italy
Prior art keywords
return valve
gas pipeline
pipeline
return
valve
Prior art date
Application number
IT91RM461A
Other languages
English (en)
Inventor
Otto Meyer
Edwin Schauer
Original Assignee
Pierburg Gmbh
Pierburg
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 Pierburg Gmbh, Pierburg filed Critical Pierburg Gmbh
Publication of ITRM910461A0 publication Critical patent/ITRM910461A0/it
Publication of ITRM910461A1 publication Critical patent/ITRM910461A1/it
Application granted granted Critical
Publication of IT1248352B publication Critical patent/IT1248352B/it

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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters

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)
  • Exhaust-Gas Circulating Devices (AREA)
ITRM910461A 1990-08-09 1991-06-25 Valvola di non ritorno per una conduttura di gas IT1248352B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE4025266A DE4025266A1 (de) 1990-08-09 1990-08-09 Rueckschlagventil fuer eine gasleitung

Publications (3)

Publication Number Publication Date
ITRM910461A0 true ITRM910461A0 (it) 1991-06-25
ITRM910461A1 ITRM910461A1 (it) 1992-12-25
IT1248352B IT1248352B (it) 1995-01-05

Family

ID=6411942

Family Applications (1)

Application Number Title Priority Date Filing Date
ITRM910461A IT1248352B (it) 1990-08-09 1991-06-25 Valvola di non ritorno per una conduttura di gas

Country Status (4)

Country Link
DE (1) DE4025266A1 (it)
FR (1) FR2665742B1 (it)
GB (1) GB2246841B (it)
IT (1) IT1248352B (it)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52102919A (en) * 1976-02-24 1977-08-29 Toyota Motor Corp System for supplying secondary air for cleaning exhaust gas in interna l combustion engine
JPS5393218A (en) * 1977-01-26 1978-08-16 Nippon Denso Co Ltd Secondary air control system
JPS5924856Y2 (ja) * 1977-07-21 1984-07-23 株式会社デンソー 内燃機関の吸入空気温度補償用サ−モスタテイツクバルブ

Also Published As

Publication number Publication date
DE4025266A1 (de) 1992-02-13
GB2246841A (en) 1992-02-12
FR2665742A1 (fr) 1992-02-14
IT1248352B (it) 1995-01-05
FR2665742B1 (fr) 1993-04-09
GB9115103D0 (en) 1991-08-28
ITRM910461A1 (it) 1992-12-25
GB2246841B (en) 1994-01-05

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Legal Events

Date Code Title Description
0001 Granted
TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19950531