ITRM910460A1 - NON-RETURN VALVE FOR GAS PIPES - Google Patents
NON-RETURN VALVE FOR GAS PIPESInfo
- Publication number
- ITRM910460A1 ITRM910460A1 IT000460A ITRM910460A ITRM910460A1 IT RM910460 A1 ITRM910460 A1 IT RM910460A1 IT 000460 A IT000460 A IT 000460A IT RM910460 A ITRM910460 A IT RM910460A IT RM910460 A1 ITRM910460 A1 IT RM910460A1
- Authority
- IT
- Italy
- Prior art keywords
- return valve
- gas pipes
- pipes
- gas
- return
- Prior art date
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
- F01N3/222—Control of additional air supply only, e.g. using by-passes or variable air pump drives using electric valves only
-
- 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
-
- 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
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4025267A DE4025267C2 (en) | 1990-08-09 | 1990-08-09 | Check valve for a gas line |
Publications (3)
Publication Number | Publication Date |
---|---|
ITRM910460A0 ITRM910460A0 (en) | 1991-06-25 |
ITRM910460A1 true ITRM910460A1 (en) | 1992-12-25 |
IT1248351B IT1248351B (en) | 1995-01-05 |
Family
ID=6411943
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ITRM910460A IT1248351B (en) | 1990-08-09 | 1991-06-25 | NON-RETURN VALVE FOR GAS PIPES |
Country Status (4)
Country | Link |
---|---|
DE (1) | DE4025267C2 (en) |
FR (1) | FR2665743B1 (en) |
GB (1) | GB2246842B (en) |
IT (1) | IT1248351B (en) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2674288A1 (en) * | 1991-03-21 | 1992-09-25 | Borg Warner Automotive Electro | SECONDARY AIR CONTROL AND NON-RETURN VALVE. |
DE4307798A1 (en) * | 1993-03-12 | 1994-09-15 | Bosch Gmbh Robert | Combination valve |
US5421366A (en) * | 1994-06-06 | 1995-06-06 | Borg-Warner Automotive, Inc. | Solenoid operated air control and check valve |
US6453667B1 (en) | 2000-09-01 | 2002-09-24 | Siemens Automotive Inc. | Air control valve and method for engine exhaust gas treatment |
DE102008030503B4 (en) | 2007-06-29 | 2019-07-11 | Borgwarner Inc. | Valve control device and method of assembly |
DE102007031957A1 (en) | 2007-07-10 | 2009-01-22 | Pierburg Gmbh | Combined non-return and control valve |
CN112324540A (en) * | 2020-09-28 | 2021-02-05 | 秦克红 | Cylinder SCR catalytic converter |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1052423A (en) * | 1900-01-01 | |||
NO123554B (en) * | 1969-03-15 | 1971-12-06 | Anton Husby & Soenner | |
BE788814A (en) * | 1970-08-03 | 1973-01-02 | Mueller Steam Specialty Divn O | ADJUSTABLE VALVE |
US3845781A (en) * | 1972-03-22 | 1974-11-05 | Refrigerating Specialties Co | Check valve for pulsating flows |
US4178953A (en) * | 1974-12-23 | 1979-12-18 | Acf Industries, Incorporated | Fail safe bypass valve |
US4631923A (en) * | 1983-10-21 | 1986-12-30 | Devron Engineering Limited | Solenoid operated check valve |
-
1990
- 1990-08-09 DE DE4025267A patent/DE4025267C2/en not_active Expired - Lifetime
-
1991
- 1991-06-20 FR FR9107585A patent/FR2665743B1/en not_active Expired - Fee Related
- 1991-06-25 IT ITRM910460A patent/IT1248351B/en active IP Right Grant
- 1991-07-12 GB GB9115104A patent/GB2246842B/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
GB9115104D0 (en) | 1991-08-28 |
FR2665743B1 (en) | 1994-01-28 |
IT1248351B (en) | 1995-01-05 |
DE4025267C2 (en) | 2000-06-08 |
FR2665743A1 (en) | 1992-02-14 |
GB2246842A (en) | 1992-02-12 |
DE4025267A1 (en) | 1992-02-13 |
ITRM910460A0 (en) | 1991-06-25 |
GB2246842B (en) | 1994-11-30 |
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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: 19970530 |