GB1368286A - Exhaust system for internal combustion engines - Google Patents

Exhaust system for internal combustion engines

Info

Publication number
GB1368286A
GB1368286A GB4332771A GB4332771A GB1368286A GB 1368286 A GB1368286 A GB 1368286A GB 4332771 A GB4332771 A GB 4332771A GB 4332771 A GB4332771 A GB 4332771A GB 1368286 A GB1368286 A GB 1368286A
Authority
GB
United Kingdom
Prior art keywords
air
valves
valve
exhaust
exhaust system
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
GB4332771A
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.)
Alfa Romeo SpA
Original Assignee
Alfa Romeo SpA
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 Alfa Romeo SpA filed Critical Alfa Romeo SpA
Publication of GB1368286A publication Critical patent/GB1368286A/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
    • F01N3/24—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 constructional aspects of converting apparatus
    • F01N3/30—Arrangements for supply of additional air
    • 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
    • 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)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust Gas After Treatment (AREA)
  • Exhaust Silencers (AREA)

Abstract

1368286 Purifying and controlling exhaust gases ALFA ROMEO SpA 16 Sept 1971 [22 Sept 1970] 43327/71 Heading F1B [Also in Division F2] An I.C. engine exhaust system comprises automatic valves 15 to admit atmospheric air to exhaust ducts 10 some distance downstream of the engine exhaust valves when the valves are opened in response to reduced exhaust gas pressure to enable afterburning of the mixture of air and exhaust gas to occur. Air is passed to valves 15 via tube 46 and valve 18 which controls air flow in response to temperature downstream of a supplementary muffler 21. Flow through the main exhaust system including mufflers 11 and 12 may be cut off by valve 13 responsive to intake manifold pressure and/or gas temperature downstream of muffler 21, valve 13 being closed if the manifold pressure falls below a predetermined value. The exhaust gas and air may be treated in catalytic silencers or thermal reactors in addition. In Figs. 3 and 6 (not shown) valve members (37) (40) are lifted to allow air to pass from intake ports (30), (44) to outlet ports (31), (45).
GB4332771A 1970-09-22 1971-09-16 Exhaust system for internal combustion engines Expired GB1368286A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT3005770 1970-09-22

Publications (1)

Publication Number Publication Date
GB1368286A true GB1368286A (en) 1974-09-25

Family

ID=11228935

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4332771A Expired GB1368286A (en) 1970-09-22 1971-09-16 Exhaust system for internal combustion engines

Country Status (3)

Country Link
DE (1) DE2147340A1 (en)
FR (1) FR2108327A5 (en)
GB (1) GB1368286A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0041831A1 (en) * 1980-06-06 1981-12-16 Pulse Air Research Limited Device for admitting air to the exhaust manifold of an internal combustion engine
GB2208180A (en) * 1987-06-30 1989-03-08 Wabco Westinghouse Fahrzeug Stop member arrangement for a flap valve of a compressor

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5279120A (en) * 1975-12-26 1977-07-04 Toyota Motor Corp Exhaust gas purifier for internal combustion engine
JPS52102920A (en) * 1976-02-26 1977-08-29 Toyota Motor Corp Secondary-air supply system for exhaust gas cleaner
JPS53127921A (en) * 1977-04-15 1978-11-08 Nissan Motor Co Ltd Secondary air introducing device of internal combustion engine
DE2820592A1 (en) * 1978-05-11 1979-11-15 Porsche Ag IC engine with exhaust afterburner - has exhaust vacuum operated valve to supply secondary air from engine cooling fan
DE8807068U1 (en) * 1988-05-30 1989-05-18 Viking-Umwelttechnik Gmbh, Kufstein, At

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0041831A1 (en) * 1980-06-06 1981-12-16 Pulse Air Research Limited Device for admitting air to the exhaust manifold of an internal combustion engine
GB2208180A (en) * 1987-06-30 1989-03-08 Wabco Westinghouse Fahrzeug Stop member arrangement for a flap valve of a compressor
GB2208180B (en) * 1987-06-30 1991-03-20 Wabco Westinghouse Fahrzeug Stop member for a flap valve of a compressor

Also Published As

Publication number Publication date
FR2108327A5 (en) 1972-05-19
DE2147340A1 (en) 1972-04-20

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee