GB1482990A - Secondary air supply control device - Google Patents

Secondary air supply control device

Info

Publication number
GB1482990A
GB1482990A GB37655/74A GB3765574A GB1482990A GB 1482990 A GB1482990 A GB 1482990A GB 37655/74 A GB37655/74 A GB 37655/74A GB 3765574 A GB3765574 A GB 3765574A GB 1482990 A GB1482990 A GB 1482990A
Authority
GB
United Kingdom
Prior art keywords
conduit
air
exhaust gas
engine
control valve
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
GB37655/74A
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.)
Nissan Motor Co Ltd
Original Assignee
Nissan Motor Co 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 Nissan Motor Co Ltd filed Critical Nissan Motor Co Ltd
Publication of GB1482990A publication Critical patent/GB1482990A/en
Expired 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
    • F01N3/222—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
    • 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
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

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)

Abstract

1482990 Controlling air supply to exhaust gas systems NISSAN MOTOR CO Ltd 28 Aug 1974 [4 Sept 1973] 37655/74 Heading B1W A secondary air supply control device for the exhaust gas cleaning system of an i.c. engine is interposed between the intake system 11 and the exhaust gas purifying system 24 comprises an air pump 30 which generates secondary air under pressure in first conduit 40, a pressure control valve 44 interposed between 40 and the air pump inlet conduit 36 via drain conduit 60, a second conduit 42 connecting the first conduit and the exhaust gas system 24, and a control valve 74 in said second conduit which controls the flow of secondary air into 24 in accordance with the flow of air taken into the engine. Control valve 44 annuls the influence of engine speed when air pump 30 is driven by the i.c. engine and comprises first and second chambers 50 and 52 divided by flexible diaphragm 48 having a valve member 62 mounted thereon which is seatable on 56 to close drain part 58, and biasing means 64 (e.g. a helical spring) which urges 62 onto seat 56. Chamber 52 may communicate via conduit 66 with a vacuum source such as air intake conduit 16 downstream of the throttle valve 20. A valve 68 may be provided in conduit 66 which may be operated by means 70 (e.g. solenoid) in response to sensor 72 programmed to detect abnormal conditions of the exhaust gas. The control valve 74 may be operated in response to engine intake air flow via a mechanical linkage 94 with the throttle valve 20 or (Fig. 2-not shown) via an air pressure linkage with the air intake venturi.
GB37655/74A 1973-09-04 1974-08-28 Secondary air supply control device Expired GB1482990A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9962973A JPS5336535B2 (en) 1973-09-04 1973-09-04

Publications (1)

Publication Number Publication Date
GB1482990A true GB1482990A (en) 1977-08-17

Family

ID=14252363

Family Applications (1)

Application Number Title Priority Date Filing Date
GB37655/74A Expired GB1482990A (en) 1973-09-04 1974-08-28 Secondary air supply control device

Country Status (2)

Country Link
JP (1) JPS5336535B2 (en)
GB (1) GB1482990A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2447461A1 (en) * 1979-01-23 1980-08-22 Renault Controlling catalyst deactivation in exhaust gas converter - with device for controlling additional air supply
GB2258168A (en) * 1991-08-01 1993-02-03 Ford Motor Co Engine exhaust system
GB2240364B (en) * 1990-01-27 1994-09-28 S & C Thermofluids Ltd Combustion engines improvements

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2447461A1 (en) * 1979-01-23 1980-08-22 Renault Controlling catalyst deactivation in exhaust gas converter - with device for controlling additional air supply
GB2240364B (en) * 1990-01-27 1994-09-28 S & C Thermofluids Ltd Combustion engines improvements
GB2258168A (en) * 1991-08-01 1993-02-03 Ford Motor Co Engine exhaust system

Also Published As

Publication number Publication date
JPS5336535B2 (en) 1978-10-03
JPS5049518A (en) 1975-05-02

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
746 Register noted 'licences of right' (sect. 46/1977)
PCNP Patent ceased through non-payment of renewal fee