GB1365604A - Exhaust system of an internal combustion engine - Google Patents

Exhaust system of an internal combustion engine

Info

Publication number
GB1365604A
GB1365604A GB1724172A GB1724172A GB1365604A GB 1365604 A GB1365604 A GB 1365604A GB 1724172 A GB1724172 A GB 1724172A GB 1724172 A GB1724172 A GB 1724172A GB 1365604 A GB1365604 A GB 1365604A
Authority
GB
United Kingdom
Prior art keywords
switch
valve
energized
converter
catalyst temperature
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
GB1724172A
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 GB1365604A publication Critical patent/GB1365604A/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
    • F01N3/20—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 specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
    • F01N3/2006—Periodically heating or cooling catalytic reactors, e.g. at cold starting or overheating
    • F01N3/2046—Periodically cooling catalytic reactors
    • 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
    • F01N3/20—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 specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
    • F01N3/2006—Periodically heating or cooling catalytic reactors, e.g. at cold starting or overheating
    • 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

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
  • Exhaust Gas After Treatment (AREA)

Abstract

1365604 Purifying I C engine exhaust gases NISSAN MOTOR CO Ltd 14 April 1972 [ 28 Oct 1971] 17241/72 Heading F1B A casing 22 around the exhaust pipe 18 upstream of a catalytic converter 20 for reducing nitrogen oxides defines an air space 24 with an inlet 26 and an outlet 28. Mechanically connected valves 30 and 32 in the inlet 26 and outlet 28 are operated by a diaphragm actuator 36 linked to the valve 30. The application of intake manifold vacuum to the actuator 36 to open the valves is controlled by a solenoid valve 42 which is energized to open the vacuum conduit 34, 40 under the control of a switch 46. The switch 46 communicates through a conduit 52 with the converter 20 at a point 54 and operates in accordance with the temperature of the converter catalyst. Above a predetermined catalyst temperature, e.g. 650‹C, Fig. 2 (not shown), the switch 46 causes the valve 42 to be energized and air is admitted to the space 24 to effect cooling of the exhaust gases. The switch 46 causes the valve 42 to be de-energized at a lower catalyst temperature, e.g. 450‹C, so that the catalyst temperature can, for certain engine operating conditions, be maintained within a certain range. The casing 22 may have foamed or fibrous insulation.
GB1724172A 1971-10-28 1972-04-14 Exhaust system of an internal combustion engine Expired GB1365604A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP46085761A JPS4849667A (en) 1971-10-28 1971-10-28

Publications (1)

Publication Number Publication Date
GB1365604A true GB1365604A (en) 1974-09-04

Family

ID=13867832

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1724172A Expired GB1365604A (en) 1971-10-28 1972-04-14 Exhaust system of an internal combustion engine

Country Status (2)

Country Link
JP (1) JPS4849667A (en)
GB (1) GB1365604A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1111209A2 (en) 1999-12-23 2001-06-27 Faurecia Abgastechnik GmbH Exhaust apparatus for motor vehicles

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1111209A2 (en) 1999-12-23 2001-06-27 Faurecia Abgastechnik GmbH Exhaust apparatus for motor vehicles
EP1111209A3 (en) * 1999-12-23 2003-06-18 Faurecia Abgastechnik GmbH Exhaust apparatus for motor vehicles

Also Published As

Publication number Publication date
JPS4849667A (en) 1973-07-13

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Legal Events

Date Code Title Description
PS Patent sealed
746 Register noted 'licences of right' (sect. 46/1977)
PCNP Patent ceased through non-payment of renewal fee