GB1427637A - Internal combustion engine having an exhaust reactor and a protective device for the reactor - Google Patents

Internal combustion engine having an exhaust reactor and a protective device for the reactor

Info

Publication number
GB1427637A
GB1427637A GB4066273A GB4066273A GB1427637A GB 1427637 A GB1427637 A GB 1427637A GB 4066273 A GB4066273 A GB 4066273A GB 4066273 A GB4066273 A GB 4066273A GB 1427637 A GB1427637 A GB 1427637A
Authority
GB
United Kingdom
Prior art keywords
sensors
cylinder
engine
fuel supply
fuel
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
GB4066273A
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
Priority claimed from DE2242591A external-priority patent/DE2242591A1/en
Priority claimed from DE2319576A external-priority patent/DE2319576A1/en
Priority claimed from DE19732340541 external-priority patent/DE2340541A1/en
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of GB1427637A publication Critical patent/GB1427637A/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
    • F01N9/00—Electrical control of exhaust gas treating apparatus
    • 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
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/009—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having two or more separate purifying devices arranged in series
    • 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
    • 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
    • F02D41/1439—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the position of the sensor
    • F02D41/1441—Plural sensors
    • F02D41/1443—Plural sensors with one sensor per cylinder or group of cylinders
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
    • F02P17/00—Testing of ignition installations, e.g. in combination with adjusting; Testing of ignition timing in compression-ignition engines
    • F02P17/12—Testing characteristics of the spark, ignition voltage or current
    • 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
    • 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
    • F01N2430/06—Influencing exhaust purification, e.g. starting of catalytic reaction, filter regeneration, or the like, by controlling engine operating characteristics by varying fuel-air ratio, e.g. by enriching fuel-air mixture
    • 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
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
    • 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)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Toxicology (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)

Abstract

1427637 Cutting out IC engine cylinders ROBERT BOSCH GmbH 29 Aug 1973 [30 Aug 1972 18 April 1973 10 Aug 1973] 40662/73 Heading F1B An I.C. engine includes a protective device for thermal and/or catalytic reactors 21, 22 in its exhaust system 20, the device comprising at least one sensor 26-29 to respond directly or indirectly to operating conditions in a cylinder or group of cylinders and means 25 responsive to the sensors to shut-off fuel or fuel/air mixture to a cylinder or group of cylinders when combustion conditions would otherwise cause an inadmissible temperature to be reached in the exhaust system. When either of sensors 23, 24 senses a reactor temperature higher than a predetermined value, the control device 25 produces a signal to open one of the switches 16-19 to cut off fuel supplied to whichever intake pipe 3-6 corresponds with the cylinder or outlet pipe 30-33 at which the lowest temperature is detected by sensors 26-29. Normally open, which, when closed, short circuit the winding of one of the injection valves 7-10 may replace the normally closed switches 16-19. Semi-conductor switches may be used instead of mechanical ones. The temperature sensors 26-29 may be located in the cylinder head or pressure sensors may be provided for each cylinder to determine whether combustion has taken place. Alternatively, the ignition current can be detected. Instead of controlling fuel supply to injection valves 7-10, control flaps may be located in intake pipes 3-6, that flap being closed by the device 25 which is in the pipe leading to the malfunctioning cylinder. A valve admits air when the flap is closed to avoid high cylinder vacuum causing loss of power. For an engine with multiple carburetters, the fuel supply to the float chamber or the mixture supply to a cylinder or group of cylinders may be interrupted. When the engine is driven by the vehicle to which it is fitted, the fuel is shut-off only after a time delay determined by operation of a bi-metal relay. Fuel supply is resumed when the engine speed falls below a pre-set value. A deactuation temperature sensor 40 prevents the device 25 from operating below a predetermined minimum temperature to allow normal starting of the engine. The sensor or sensors 40 may be in, on or in the vicinity of the engine or in its exhaust system or in more than one of these places. Alternatively one or more of sensors 23, 24, 26- 29 or sensors in the engine oil, cooling water or cooling air may be used. A delay switching device 44 may be provided which is actuated simultaneously with starter motor 43 and, for a predetermined time, prevents the device 25 from interrupting fuel supply. The fuel supply shut-off may operate only for a fixed time and then fuel supply is resumed until further misfiring occurs. This may be effected by monostable trigger stages 50-53, which cause switches 16-19 to be opened until the trigger stage returns to its stable state.
GB4066273A 1972-08-30 1973-08-29 Internal combustion engine having an exhaust reactor and a protective device for the reactor Expired GB1427637A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE2242591A DE2242591A1 (en) 1972-08-30 1972-08-30 PROTECTIVE DEVICE FOR AN ARRANGEMENT FOR EXHAUST GAS DETOXIFICATION FROM COMBUSTION POWER MACHINES
DE2319576A DE2319576A1 (en) 1973-04-18 1973-04-18 PROTECTIVE DEVICE FOR AN ARRANGEMENT FOR EXHAUST GAS DETOXIFICATION FROM COMBUSTION POWER MACHINES
DE19732340541 DE2340541A1 (en) 1973-08-10 1973-08-10 PROTECTIVE DEVICE FOR AN ARRANGEMENT FOR EXHAUST GAS DETOXIFICATION FROM COMBUSTION POWER MACHINES

Publications (1)

Publication Number Publication Date
GB1427637A true GB1427637A (en) 1976-03-10

Family

ID=27184670

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4066273A Expired GB1427637A (en) 1972-08-30 1973-08-29 Internal combustion engine having an exhaust reactor and a protective device for the reactor

Country Status (5)

Country Link
JP (1) JPS4985421A (en)
FR (1) FR2200891A5 (en)
GB (1) GB1427637A (en)
IT (1) IT993083B (en)
NL (1) NL7311874A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2244514A (en) * 1990-05-31 1991-12-04 Nissan Motor I.c. engine fuel supply control

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS567043B2 (en) * 1973-03-12 1981-02-16
JPS5088420A (en) * 1973-12-13 1975-07-16
JPS5545061Y2 (en) * 1974-03-09 1980-10-23
JPS5234128A (en) * 1975-09-12 1977-03-15 Nissan Motor Co Ltd Selective fuel supply to cylinders
JPS5654355Y2 (en) * 1976-12-10 1981-12-18
JPS5578132A (en) * 1978-12-06 1980-06-12 Nissan Motor Co Ltd Device to control number of fuel supply cylinder
JPS60185035U (en) * 1984-05-18 1985-12-07 マツダ株式会社 fuel injector
WO1990006432A1 (en) * 1988-12-03 1990-06-14 Robert Bosch Gmbh Engine exhaust system
JP2770238B2 (en) * 1989-06-15 1998-06-25 本田技研工業株式会社 Failure detection method for valve timing switching control device of internal combustion engine
DE4334557A1 (en) * 1993-10-11 1995-04-13 Bayerische Motoren Werke Ag Device for idle control of a motor vehicle internal combustion engine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2244514A (en) * 1990-05-31 1991-12-04 Nissan Motor I.c. engine fuel supply control
GB2244514B (en) * 1990-05-31 1994-03-09 Nissan Motor Fuel supply control system for an internal combustion engine

Also Published As

Publication number Publication date
JPS4985421A (en) 1974-08-16
NL7311874A (en) 1974-03-04
IT993083B (en) 1975-09-30
FR2200891A5 (en) 1974-04-19

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Legal Events

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