GB1468229A - Exhaust gas decontamination - Google Patents

Exhaust gas decontamination

Info

Publication number
GB1468229A
GB1468229A GB1670174A GB1670174A GB1468229A GB 1468229 A GB1468229 A GB 1468229A GB 1670174 A GB1670174 A GB 1670174A GB 1670174 A GB1670174 A GB 1670174A GB 1468229 A GB1468229 A GB 1468229A
Authority
GB
United Kingdom
Prior art keywords
temperature
reactor
switch
plug
spark
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
GB1670174A
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of GB1468229A publication Critical patent/GB1468229A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B75/00—Other engines
    • F02B75/10—Engines with means for rendering exhaust gases innocuous
    • 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
    • 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
    • F01N9/00—Electrical control of exhaust gas treating apparatus
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B25/00—Engines characterised by using fresh charge for scavenging cylinders
    • F02B25/02—Engines characterised by using fresh charge for scavenging cylinders using unidirectional scavenging
    • F02B25/08—Engines with oppositely-moving reciprocating working pistons
    • F02B25/10—Engines with oppositely-moving reciprocating working pistons with one piston having a smaller diameter or shorter stroke than the other
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/02—Circuit arrangements for generating control signals
    • F02D41/14—Introducing closed-loop corrections
    • F02D41/1438—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor
    • F02D41/1444—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases
    • F02D41/1446—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases the characteristics being exhaust temperatures
    • 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
    • F01N2250/00—Combinations of different methods of purification
    • F01N2250/04—Combinations of different methods of purification afterburning and catalytic conversion
    • 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
    • F01N2430/00—Influencing exhaust purification, e.g. starting of catalytic reaction, filter regeneration, or the like, by controlling engine operating characteristics
    • F01N2430/02—Influencing exhaust purification, e.g. starting of catalytic reaction, filter regeneration, or the like, by controlling engine operating characteristics by cutting out a part of engine cylinders
    • 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
    • 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
    • Y02T10/40—Engine management systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Exhaust Gas After Treatment (AREA)
  • Ignition Installations For Internal Combustion Engines (AREA)
  • Electrical Control Of Ignition Timing (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)

Abstract

1468229 Internal combustion engines ROBERT BOSCH GmbH 17 April 1974 [18 April 1973] 16701/74 Heading F1B [Also in Division B 1] A method of decontaminating exhaust gases of an I.C. engine during the warm-up phase comprises monitoring the temperature in the or at least one of a thermal and/or catalytic reactor, rendering at least one spark-plug of the engine inoperative when the temperature monitored exceeds a predetermined value and then further rendering the sparkplug(s) operative. The predetermined value of the temperature is made the self-ignition temperature of unburnt fuel/air mixture, approx 250‹C, so that the fuel mixture in at least one cylinder is passed unburnt to the reactor where combustion takes place. This provides a fast warm-up of the reactor. A second predetermined temperature is made the operating temperature of the reactor, approx 500‹, which is used to render the spark-plug(s) operative. A temperature sensor 29, which monitors the temperature, is connected to a switching circuit which includes a threshold value switch 30 and timing switch 31. The switch 31 energizes a relay 32 to open contact 33 and render spark-plug 17 inoperative. After a predetermined time the relay is de-energized and the plug 17 rendered operative. In a modification, Fig. 2 (not shown), a double threshold switch (34) is operated by the sensor. The switch (34) de-energizes the relay 32 when the reactor reaches its operating temperature.
GB1670174A 1973-04-18 1974-04-17 Exhaust gas decontamination Expired GB1468229A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2319670A DE2319670A1 (en) 1973-04-18 1973-04-18 METHOD AND EQUIPMENT FOR EXHAUST GAS DETOXIFICATION FROM COMBUSTION MACHINERY

Publications (1)

Publication Number Publication Date
GB1468229A true GB1468229A (en) 1977-03-23

Family

ID=5878530

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1670174A Expired GB1468229A (en) 1973-04-18 1974-04-17 Exhaust gas decontamination

Country Status (5)

Country Link
JP (1) JPS5012419A (en)
DE (1) DE2319670A1 (en)
FR (1) FR2226866A5 (en)
GB (1) GB1468229A (en)
SE (1) SE396792B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2316338A (en) * 1996-08-21 1998-02-25 Rover Group An emission control system for an engine
FR2793280A1 (en) * 1999-05-07 2000-11-10 Renault Four-stroke i.c. engine control procedure uses injection of air and fuel into exhaust gases to produce exothermic oxidation reaction

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE466068B (en) * 1990-04-25 1991-12-09 Volvo Ab DEVICE FOR CONTROL OF THE EXHAUST TEMPERATURE AT AN INCORPORATION ENGINE WITH EXHAUST SYSTEM AND CATALYST

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2316338A (en) * 1996-08-21 1998-02-25 Rover Group An emission control system for an engine
FR2793280A1 (en) * 1999-05-07 2000-11-10 Renault Four-stroke i.c. engine control procedure uses injection of air and fuel into exhaust gases to produce exothermic oxidation reaction

Also Published As

Publication number Publication date
JPS5012419A (en) 1975-02-08
FR2226866A5 (en) 1974-11-15
DE2319670A1 (en) 1974-11-14
SE396792B (en) 1977-10-03

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Legal Events

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