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GB1334388A - Motor vehicle emission control system - Google Patents

Motor vehicle emission control system

Info

Publication number
GB1334388A
GB1334388A GB5989870A GB5989870A GB1334388A GB 1334388 A GB1334388 A GB 1334388A GB 5989870 A GB5989870 A GB 5989870A GB 5989870 A GB5989870 A GB 5989870A GB 1334388 A GB1334388 A GB 1334388A
Authority
GB
United Kingdom
Prior art keywords
engine
carburetter
valve
solenoid
fed
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
GB5989870A
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.)
Sunoco Inc
Original Assignee
Sun Oil Co
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 Sun Oil Co filed Critical Sun Oil Co
Publication of GB1334388A publication Critical patent/GB1334388A/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
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/0002—Controlling intake air
    • F02D41/0005—Controlling intake air during deceleration
    • 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
    • F02M3/06—Increasing idling speed
    • F02M3/07—Increasing idling speed by positioning the throttle flap stop, or by changing the fuel flow cross-sectional area, by electrical, electromechanical or electropneumatic means, according to engine speed
    • 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
    • F02M7/00—Carburettors with means for influencing, e.g. enriching or keeping constant, fuel/air ratio of charge under varying conditions
    • F02M7/12—Other installations, with moving parts, for influencing fuel/air ratio, e.g. having valves
    • 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)
  • Control Of The Air-Fuel Ratio Of Carburetors (AREA)
  • Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
  • Exhaust Gas After Treatment (AREA)

Abstract

1334388 Treating I. C. engine charge; purifying exhaust gases SUN OIL CO 17 Dec 1970 [29 Jan 1970] 59898/70 Heading F1B To reduce the emission of oxides of nitrogen from a motor vehicle engine the mixture produced by the fuel supply system, e.g. a four-barrel carburetter 7, is, during off-idle and low-flow main metering operating conditions, enriched as compared with the mixture which would be produced by a carburetter set to the manufacturer's recommended settings for the conditions. Above a predetermined engine or vehicle speed, e.g. 35 m.p.h., additional air is fed to the engine intake. The exhaust gases from the engine are acted on to convert at least part of the CO and HC therein to harmless substances, e.g. by flow through afterburning reactors 4, 4'. The additional air is fed into a carburetter bore 7 through a port 10 or ports upstream of the throttle valve 8 or to the bore of a plate immediately downstream of the carburetter. The air inlet pipe 11 contains a valve 12 closed by a solenoid 19 and a calibrated restriction 13 or an adjustable needle valve. The solenoid 19 is deenergized and the valve 12 opened when the normally-closed switch 18 is opened by a signal from the electrical tachometer-type unit 15. The signal operating the relay 17 may be supplied by the unit 15 when the number of ignition pulses received corresponds to the predetermined engine speed or the number of pulses supplied by a device associated with the vehicle transmission corresponds to the predetermined vehicle speed. The solenoid 19 may be controlled by a mechanically-operated switch responsive to automatic transmission pressure or r.p.m. Air may be fed to the exhaust gases immediately downstream of each engine exhaust valve by an engine-driven pump.
GB5989870A 1970-01-29 1970-12-17 Motor vehicle emission control system Expired GB1334388A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US683270A 1970-01-29 1970-01-29

Publications (1)

Publication Number Publication Date
GB1334388A true GB1334388A (en) 1973-10-17

Family

ID=21722828

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5989870A Expired GB1334388A (en) 1970-01-29 1970-12-17 Motor vehicle emission control system

Country Status (4)

Country Link
DE (1) DE2104301C2 (en)
FR (1) FR2077073A5 (en)
GB (1) GB1334388A (en)
SE (1) SE381708B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2213200A (en) * 1987-12-04 1989-08-09 Economic Combustion Systems Li Extra air supply to i.c. engine mixture intake

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2286285A1 (en) * 1974-09-26 1976-04-23 Peugeot & Renault ELECTROPNEUMATIC DEVICE FOR REGULATING AN AUXILIARY AIR INJECTION TO THE INTAKE OF INTERNAL COMBUSTION ENGINES

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3364909A (en) * 1965-10-24 1968-01-23 Gen Motors Corp Engine exhaust emission control system having air flow control valve
US3470858A (en) * 1967-08-16 1969-10-07 George H Mycroft Apparatus for mixing air and fuel for internal combustion engines

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2213200A (en) * 1987-12-04 1989-08-09 Economic Combustion Systems Li Extra air supply to i.c. engine mixture intake
GB2213200B (en) * 1987-12-04 1991-10-02 Economic Combustion Systems Li Improved internal combustion engine

Also Published As

Publication number Publication date
DE2104301A1 (en) 1971-08-05
DE2104301C2 (en) 1982-12-23
SE381708B (en) 1975-12-15
FR2077073A5 (en) 1971-10-15

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Legal Events

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