GB1368472A - Internal combustion engine having means for reducing the emission of unburned products with the exhaust gases - Google Patents

Internal combustion engine having means for reducing the emission of unburned products with the exhaust gases

Info

Publication number
GB1368472A
GB1368472A GB4907871A GB4907871A GB1368472A GB 1368472 A GB1368472 A GB 1368472A GB 4907871 A GB4907871 A GB 4907871A GB 4907871 A GB4907871 A GB 4907871A GB 1368472 A GB1368472 A GB 1368472A
Authority
GB
United Kingdom
Prior art keywords
closed
valve
pass
switch
solenoid
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
GB4907871A
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 GB1368472A publication Critical patent/GB1368472A/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
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M3/00—Idling devices for carburettors
    • F02M3/02—Preventing flow of idling fuel
    • F02M3/04—Preventing flow of idling fuel under conditions where engine is driven instead of driving, e.g. driven by vehicle running down hill
    • F02M3/045—Control of valves situated in the idling nozzle system, or the passage system, by electrical means or by a combination of electrical means with fluidic or mechanical means
    • 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
    • F02D41/0025—Controlling engines characterised by use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
    • F02D41/0047—Controlling exhaust gas recirculation [EGR]
    • F02D41/0077—Control of the EGR valve or actuator, e.g. duty cycle, closed loop control of position
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
    • F02M26/17—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories in relation to the intake system
    • F02M26/21—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories in relation to the intake system with EGR valves located at or near the connection to the intake system
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/52—Systems for actuating EGR valves
    • F02M26/53—Systems for actuating EGR valves using electric actuators, e.g. solenoids
    • 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
    • F02D41/04—Introducing corrections for particular operating conditions
    • F02D41/12—Introducing corrections for particular operating conditions for deceleration
    • F02D41/123—Introducing corrections for particular operating conditions for deceleration the fuel injection being cut-off
    • 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)
  • Exhaust-Gas Circulating Devices (AREA)
  • Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)

Abstract

1368472 Regulating I C engine fuel and air supply; recirculating exhaust gases ALFA ROMEO SpA 21 Oct 1971 [24 Oct 1970] 49078/71 Heading F1B With the throttle valve 2 closed and the engine speed above a predetermined value the flow of air through a by-pass 4 around the throttle valve and the injection of fuel are cut-off. In the embodiment shown a solenoid 23 is energized to move the valve 21 to close the by-pass 4 when a switch 40, closed when the valve 2 is closed, is closed simultaneously with a switch 39 closed when a predetermined vacuum in the intake duct 12 is exceeded. Means for cutting off the fuel injection is operated simultaneously with energization of the solenoid 23. When the valve 21 closes the by-pass 4 it opens an exhaust gas recirculation duct 17, 19 containing a gas and liquid cyclone filter 27. The calibrated port 5 restricts the amount of exhaust gas recirculation. In another embodiment, Fig. 1 (not shown) a needle valve (6, 7) operated by a solenoid (8), closes the by-pass 4 when a throttle position responsive switch (32) and a switch (33), operated by a device (28) receiving a signal which is function of engine speed, are closed simultaneously.
GB4907871A 1970-10-24 1971-10-21 Internal combustion engine having means for reducing the emission of unburned products with the exhaust gases Expired GB1368472A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT734470 1970-10-24

Publications (1)

Publication Number Publication Date
GB1368472A true GB1368472A (en) 1974-09-25

Family

ID=11124994

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4907871A Expired GB1368472A (en) 1970-10-24 1971-10-21 Internal combustion engine having means for reducing the emission of unburned products with the exhaust gases

Country Status (3)

Country Link
DE (1) DE2152811A1 (en)
FR (1) FR2113106A5 (en)
GB (1) GB1368472A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5922057B2 (en) * 1977-03-04 1984-05-24 三菱自動車工業株式会社 Internal combustion engine intake control device
FR2414633A1 (en) * 1978-01-12 1979-08-10 Utilisation Ration Gaz Carburettor fuel flow regulator - has control link between pressure detector and fuel inlet valve to close latter when pressure in mixing chamber falls below set limit

Also Published As

Publication number Publication date
FR2113106A5 (en) 1972-06-23
DE2152811A1 (en) 1972-04-27

Similar Documents

Publication Publication Date Title
GB1410545A (en) Internal combustion engines
GB1214071A (en) Improvements in or relating to carburation devices for internal combustion engines for automobile vehicles
GB1470642A (en) Closed loop fast idle control system
ES8502214A1 (en) Control valve for a gas fuel supply to an internal combustion engine and method for using the control valve.
GB1350415A (en) Induction and exhaust systems for internal combustion engines
JPS5598625A (en) Control system for internal combustion engine
GB1254456A (en) Carburetors for internal combustion engines
GB1530328A (en) Air-fuel ratio control adjusting system in an internal combustion engine
GB1303121A (en)
GB1411352A (en) Exhaust gas recirculation control device in an exhaust gas recirculation system of an internal combustion engine
ES335244A1 (en) Improvements in engine carburing systems (Machine-translation by Google Translate, not legally binding)
GB1263314A (en) Carburetors for internal combustion engines
GB1445849A (en) Fuel metering systems
GB1517433A (en) Internal combustion engine having an air-fuel ratio control device
GB1348965A (en) Carburetor with anti-running-on control
GB1335382A (en) Apparatus for controlling the air/fuel ration of a supply for an internal combustion engine
GB1368472A (en) Internal combustion engine having means for reducing the emission of unburned products with the exhaust gases
GB1384655A (en) Internal combustion engine with control of the carburettor to prevent running-on
SE386713B (en) DEVICE FOR CONTROLLED EXHAUST OF EXHAUST TO THE INTAKE PIPE IN AN COMBUSTION ENGINE
GB1513924A (en) Apparatus for controlling the addition of supplementary air to the exhaust gas of internal combustion engines
ES434884A1 (en) Fuel feed devices for internal combustion engines
GB1527935A (en) Internal combustion engine operating condition control systems
GB953933A (en) Internal combustion engines with exhaust-gas turbosuperchargers
GB1364897A (en) Internal combustion engine with an exhaust gas afzer burning system
GB1501833A (en) Exhaust gas purifying system in combination with an internal combustion engine

Legal Events

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