US3867919A - Anti-dieseling control - Google Patents

Anti-dieseling control Download PDF

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Publication number
US3867919A
US3867919A US329923A US32992373A US3867919A US 3867919 A US3867919 A US 3867919A US 329923 A US329923 A US 329923A US 32992373 A US32992373 A US 32992373A US 3867919 A US3867919 A US 3867919A
Authority
US
United States
Prior art keywords
engine
energization
ignition system
valve
circuit
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 - Lifetime
Application number
US329923A
Other languages
English (en)
Inventor
Emile P Grenier
George H Muller
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.)
Ford Motor Co
Original Assignee
Ford Motor 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 Ford Motor Co filed Critical Ford Motor Co
Priority to US329923A priority Critical patent/US3867919A/en
Priority to CA184,724A priority patent/CA988380A/en
Priority to GB450174A priority patent/GB1424992A/en
Priority to JP49013781A priority patent/JPS5012426A/ja
Priority to DE19742405180 priority patent/DE2405180A1/de
Application granted granted Critical
Publication of US3867919A publication Critical patent/US3867919A/en
Priority to CA235,035A priority patent/CA993742A/en
Priority to JP1977170713U priority patent/JPS5611636Y2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F02M23/00—Apparatus for adding secondary air to fuel-air mixture
    • F02M23/04—Apparatus for adding secondary air to fuel-air mixture with automatic control
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D17/00—Controlling engines by cutting out individual cylinders; Rendering engines inoperative or idling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D2700/00—Mechanical control of speed or power of a single cylinder piston engine
    • F02D2700/05—Controlling by preventing combustion in one or more cylinders
    • F02D2700/052—Methods therefor
    • F02D2700/056—Methods therefor by interrupting the medium supply
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S123/00—Internal-combustion engines
    • Y10S123/11—Antidieseling

Definitions

  • Air dilution has taken many forms such as including use of a special control for moving the throttle setting so that it will completelychoke off the air/fuel mixture to the engine when the ignition is shut off.
  • the throttle can be kicked open by means of a solenoid actuated by the ignition switch when the ignition is turned off, thus providing a substantially more diluted air/fuel ratio to prevent dieseling.
  • Another mode is to draw in a sample of air into a common receptacle and maintain this sample during the operation of the engine ⁇ the air is then forced out of the receptacle into the idle fuel chamber of the carburetor of the internal combustion engine shortly after ignition shut off. This sample of air thus provides a noncombustible air/fuel mixture to the cylinders of the engine. 7
  • the prior art also has developed various devices for continuing the combustion process after shut down of an engine for various purposes. This has been used particularly in connection with diesel engines in conjunctionwith different fuel injection timing wherein it is desirable to allow a few minutes of idle operation just before shut down after normal engine operation under load. An idle operation is desirable to permit the internal temperature of the engine to stabilize before complete shut down.
  • a suitable converter can be of the catalytic type using exotic metals easily contaminated by a certain change in the chemistry of gases passing therethrough. Since engine inherently provides a limited degree of suction after shut down due to the inertia of the elements continuing to move, a limited quantity of fuel, Oil fumes, or air is drawn into the engine regardless of throttle closure; such mixture may pass fully or in part uncombusted. The residual temperature of the catalytic converter may be such to permit a small amount of flaming combustion of such uncombusted elements resulting in contamination or damage to the catalyst.
  • this invention provides an apparatus combination effective to flush the intake manifold system with a large quantity of fresh air and simultaneously maintain the spark ignition system operative for a predetermined time after engine shut down has been initiated, in order to complete combustion of the mixture under increasingly lean air/fuel ratio.
  • Another object is to provide a time delay mechanism in such an apparatus combination which is effective to automatically restore the spark ignition system to its off condition after shut down but only when intake manifold vacuum has dropped below a predetermined level.
  • FIG. 1 a preferred embodiment for this invention is illustrated.
  • a control for post engine shut down is employed with a typical engine A of the internal combustion type having a spark ignition system B controllable by a suitable manual ignition switch C.
  • the engine has a conventional induction system D for supplying a mixture of fuel and air to an intake manifold E leading to said engine.
  • the exhaust gases from said engine travel through a typical exhaust system F, and in this embodiment a catalytic converter G is used to reduce the undesirable emission level of such gases (the catalytic converter being an important combination element for which this invention is effective to protect).
  • Catalytic converters are designed to provide a flameless combustion of exhaust gases at a predetermined range of chemical makeup and at a predetermined temperature level. At shut down, the right temperature condition still prevails due to retained heat in the engine and converter, but an unusual rich air/fuel mixture may be exhausted to provide a glow or semi-flaming combustion in the converter. The result is poisoning or destruction of the expensive catalytic elements which may be of exotic metal such as palladium.
  • an anti-dieseling control which comprises the combination of a dilution means H for flooding the intake manifold with air and means I for overriding the de-energization of the ignition system during shut down to permit ignition of any combustible mixture in the engine for a predetermined period.
  • the means H has a duct communicating an opening 11 in the intake manifold E with outside fresh air to flood and dilute the mixture coming from the induction system for said engine in response to the turning off of the ignition switch and instigating engine shut down.
  • the duct introduces the dilution air to the intake system downstream from where nonnal or regular fuel and air is inducted.
  • a desirable location for the opening 11 is on the opposite portion relative to the carburetor throttle body and as is generally done for the carburetor, it is centrally located in regard to the engine intake parts.
  • Duct 10 is operably controlled by an admission valve 12 having a valve housing 13 extending transversely across the duct 10 and has a valve orifice l4 defined by the intersection of the housing and duct.
  • a valve element or cylinder 15 is slidable in intimate relationship with housing 13 and can progressively close off the valve orifice 14.
  • the valve element 15 is normally urged in one direction to close the orifice by a spring 16 operating between the housing and an extension 17 of the valve element.
  • a solenoid actuator 18 is effective to overcome said bias by urging an extension 19 in an opposite direction to open the orifice.
  • a circuit 23 is employed to connect an electrical power source 24 for the spark ignition system with the solenoid actuator 18.
  • another circuit 25 is employed to normally maintain circuit 23 in an open condition when the manual ignition switch C is closed for engine operation.
  • a switch element 26 is normally urged to a closed condition on contacts 27 by resilient means (not shown); element 26 is moved to an open condition by a solenoid assembly 28 with a coil in series with circuit 25 and effective to move extension 29 of element 26 by the force field set up.
  • the solenoid assembly 28 will be energized maintaining the element 26 in the open condition and thereby de-activating actuator l8 keeping duct 10 closed.
  • the anti-dieseling control further incorporates an arrangement for continuing spark for ignition a predetermined period after shut-down.
  • a circuit 31 connects to circuit 23 to receive power when shut-down occurs; circuit 31 connects to one terminal 32 of ignition switch C, terminal 32 is electrically connected to the spark ignition system B.
  • a swtich (element 34 and contacts 35) may be used to interrupt circuit 31 in response to movement of valve element 15 which occurs after circuit 23 is interrupted by a delay mechanism.
  • the delay mechanism or means I for overriding the de-energization of the ignition system comprises a vacuum responsive electrical switch assembly.
  • the assembly has a housing 36 defining a chamber within which a slidable diaphragm 37 is disposed.
  • a switch element 38 is carried on the diaphragm 37 for connecting or disconnecting contacts 39 of circuit 23.
  • Side 37a of the diaphragm is engaged by spring 40 to urge the switch element to a normally open condition.
  • Side 37a is also subject to vacuum pressure from the intake manifold E; a ball check valve 41 permits communication of vacuum when sufficient to move the check valve and prevents communication at other times thereby venting the housing chamber to atmosphere by way of passage V.
  • the engine When engine shut down is first initiated, the engine has sufflcient intake manifold vacuum to overcome spring 40 and close contacts 39 thereby allowing the solenoid actuator 18 to be energized for permitting the entrance of the dilution air into the engine.
  • the engine vacuum becomes progressively weaker. Over a period of approximately 5 to 6 seconds, the vacuum level will have deteriorated to a point where spring 40 causes opening of circuit 23. Within a short time thereafter, decay of the magnetic field of actuator 18 will allow the contacts 35 to be opened preventing further spark for ignition.
  • an air-fuel induction means for supplying a combustible mixture to said engine
  • a valve for controlling the admission of fresh air to said duct and having a housing extending across said duct and a valve member slidable in said housing for closing off said duct,
  • d. means for operating said valve between open and closed positions of said duct, said means normally biasing said member to a closed position and having a solenoid actuator responsive to engine shut down for overcoming said bias to move said member to an open position, said operating means providing an electrical circuit for said actuator which is responsive to selective de-energization of said spark ignition system to open said valve and delay completion of said de-energization to permit igni tion of said mixture for a predetermined period, said circuit being responsive to normal energization of said spark ignition system to open said circuit, and
  • a catalytic converter having material for sustaining combustion at a predetermined temperature level, said operating means being effective to continue combustion of said mixture in said primary zone after engine shut-down in a manner to prevent uncombusted mixtures from reaching said catalytic converter that can flamingly combust in said converter at said predetermined temperature level.
  • an air-fuel induction means for supplying a combustible mixture to said engine
  • d. means for operating said valve between open and closed positions, said means being responsive to selective de-energization of said spark ignition system to open said valve and delay completion of said de-energization to permit ignition of said mixture for a predetermined period, said operating means having: (I) a solenoid actuator for moving said valve to an open position, (2') an electrical circuit for energizing said solenoid engine, (3) means rcsponsive to energization of said spark ignition system for maintaining said circuit in an open condition, said responsive means having a switch in said circuit normally biased to a closed position, a sole noid actuator for opening said switch, said solenoid actuator being de-energized in response to deenergization of said spark ignition system, and (4) delay means in said circuit operable to open said circuit after a predetermined period has elapsed from de-energization of said spark ignition system.
  • the vacuum operated switch has a diaphragm for moving said switch between opened and closed positions, said diaphragm being moved in one direction by a spring force and in an opposite direction by the force of vacuum from said intake manifold, whereby said circuit is closed upon de-energization of said spark ignition system and is maintained closed until the force-of said vacuum falls below the spring force in response to a cessation of combustion.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)
  • Ignition Installations For Internal Combustion Engines (AREA)
  • Exhaust Gas After Treatment (AREA)
US329923A 1973-02-05 1973-02-05 Anti-dieseling control Expired - Lifetime US3867919A (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
US329923A US3867919A (en) 1973-02-05 1973-02-05 Anti-dieseling control
CA184,724A CA988380A (en) 1973-02-05 1973-10-31 Anti-dieseling control for internal combustion engines
GB450174A GB1424992A (en) 1973-02-05 1974-01-31 Spark igni'ion internal combustion engine
JP49013781A JPS5012426A (cs) 1973-02-05 1974-02-04
DE19742405180 DE2405180A1 (de) 1973-02-05 1974-02-04 Einrichtung in einer brennkraftmaschine zur verhinderung eines dieselns
CA235,035A CA993742A (en) 1973-02-05 1975-09-09 Anti-dieseling control for internal combustion engines
JP1977170713U JPS5611636Y2 (cs) 1973-02-05 1977-12-20

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US329923A US3867919A (en) 1973-02-05 1973-02-05 Anti-dieseling control

Publications (1)

Publication Number Publication Date
US3867919A true US3867919A (en) 1975-02-25

Family

ID=23287597

Family Applications (1)

Application Number Title Priority Date Filing Date
US329923A Expired - Lifetime US3867919A (en) 1973-02-05 1973-02-05 Anti-dieseling control

Country Status (5)

Country Link
US (1) US3867919A (cs)
JP (2) JPS5012426A (cs)
CA (1) CA988380A (cs)
DE (1) DE2405180A1 (cs)
GB (1) GB1424992A (cs)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4016851A (en) * 1973-09-06 1977-04-12 Societe D'etudes De Machines Thermiques Safety control method and device for limiting the temperature of a fluid to a given upper value
US4029073A (en) * 1975-07-14 1977-06-14 James Dey Automatic motor kill system for preventing damage to a heavy equipment motor due to a dirty air filter
US4213437A (en) * 1978-11-20 1980-07-22 Carmen Onofrio Air-filter purger for internal combustion engines
WO1980001821A1 (en) * 1979-03-02 1980-09-04 H Davidson Engine overspeed shut-down system and method
US4223649A (en) * 1976-06-01 1980-09-23 Robinson Charles E Motor brake control system
US4522168A (en) * 1983-01-31 1985-06-11 Toyota Jidosha Kabushiki Kaisha Method and apparatus for controlling fuel-injection amount in diesel engine
US4768480A (en) * 1987-12-10 1988-09-06 General Motors Corporation Engine with spark ignition operation through the oil pressure switch after fuel shutoff
US6195985B1 (en) * 1997-10-31 2001-03-06 The Swatch Group Management Services Ag Method for reducing the pollutant emission of an internal combustion engine
US20030213454A1 (en) * 2002-05-14 2003-11-20 Klemens Grieser Method for preparing an internal combustion engine for starting
US10343692B2 (en) * 2016-09-09 2019-07-09 Hyundai Motor Company Method and apparatus for preventing dieseling of engine for mild hybrid electric vehicle
US11519347B2 (en) * 2020-08-21 2022-12-06 Lg Electronics Inc. Gas engine heat pump and method of operating the same

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT214826Z2 (it) * 1988-03-15 1990-06-18 Boccioli Paolo Perfezionamento nei sistemi di carburazione nei motori acombustione interna mediante controllo dell'aria immessa.
US5013761A (en) * 1988-06-03 1991-05-07 Eli Lilly And Company Serotonin antagonists
US5541204A (en) * 1994-12-02 1996-07-30 Bristol-Myers Squibb Company Aryloxypropanolamine β 3 adrenergic agonists

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1751322A (en) * 1923-09-06 1930-03-18 Graulock Company Carburetor suction-release device
US3158144A (en) * 1964-11-24 Walker
US3241539A (en) * 1963-08-01 1966-03-22 Systematics Inc Apparatus for stopping engines
US3287899A (en) * 1965-02-12 1966-11-29 Norris Thermador Corp Air pollution control system for internal combustion engine
US3354877A (en) * 1966-03-25 1967-11-28 Acf Ind Inc Means for preventing auto ignition at engine shut down
US3482562A (en) * 1967-12-06 1969-12-09 Gen Motors Corp Air inlet control mechanism
US3635203A (en) * 1970-07-27 1972-01-18 Sylvania Electric Prod Antidieseling device for internal combustion engines
US3741188A (en) * 1971-12-03 1973-06-26 Ford Motor Co Carburetor idle system air bleed
US3752450A (en) * 1971-07-26 1973-08-14 Ford Motor Co Vacuum controlled carburetor throttle valve positioner
US3753427A (en) * 1971-11-29 1973-08-21 Ford Motor Co Engine anti-diesel and deceleration control
US3795230A (en) * 1973-03-27 1974-03-05 Toyo Kogyo Co Primary air supply for an internal combustion engine

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4729133U (cs) * 1971-04-30 1972-12-02

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3158144A (en) * 1964-11-24 Walker
US1751322A (en) * 1923-09-06 1930-03-18 Graulock Company Carburetor suction-release device
US3241539A (en) * 1963-08-01 1966-03-22 Systematics Inc Apparatus for stopping engines
US3287899A (en) * 1965-02-12 1966-11-29 Norris Thermador Corp Air pollution control system for internal combustion engine
US3354877A (en) * 1966-03-25 1967-11-28 Acf Ind Inc Means for preventing auto ignition at engine shut down
US3482562A (en) * 1967-12-06 1969-12-09 Gen Motors Corp Air inlet control mechanism
US3635203A (en) * 1970-07-27 1972-01-18 Sylvania Electric Prod Antidieseling device for internal combustion engines
US3752450A (en) * 1971-07-26 1973-08-14 Ford Motor Co Vacuum controlled carburetor throttle valve positioner
US3753427A (en) * 1971-11-29 1973-08-21 Ford Motor Co Engine anti-diesel and deceleration control
US3741188A (en) * 1971-12-03 1973-06-26 Ford Motor Co Carburetor idle system air bleed
US3795230A (en) * 1973-03-27 1974-03-05 Toyo Kogyo Co Primary air supply for an internal combustion engine

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4016851A (en) * 1973-09-06 1977-04-12 Societe D'etudes De Machines Thermiques Safety control method and device for limiting the temperature of a fluid to a given upper value
US4029073A (en) * 1975-07-14 1977-06-14 James Dey Automatic motor kill system for preventing damage to a heavy equipment motor due to a dirty air filter
US4106469A (en) * 1975-07-14 1978-08-15 James Dey Automatic motor kill system
US4223649A (en) * 1976-06-01 1980-09-23 Robinson Charles E Motor brake control system
US4213437A (en) * 1978-11-20 1980-07-22 Carmen Onofrio Air-filter purger for internal combustion engines
WO1980001821A1 (en) * 1979-03-02 1980-09-04 H Davidson Engine overspeed shut-down system and method
US4522168A (en) * 1983-01-31 1985-06-11 Toyota Jidosha Kabushiki Kaisha Method and apparatus for controlling fuel-injection amount in diesel engine
US4768480A (en) * 1987-12-10 1988-09-06 General Motors Corporation Engine with spark ignition operation through the oil pressure switch after fuel shutoff
US6195985B1 (en) * 1997-10-31 2001-03-06 The Swatch Group Management Services Ag Method for reducing the pollutant emission of an internal combustion engine
US20030213454A1 (en) * 2002-05-14 2003-11-20 Klemens Grieser Method for preparing an internal combustion engine for starting
EP1367256A1 (de) * 2002-05-14 2003-12-03 Ford Global Technologies, Inc., A subsidiary of Ford Motor Company Verfahren zur Vorbereitung des Anlassens einer Brennkraftmaschine
US6971357B2 (en) 2002-05-14 2005-12-06 Ford Global Technologies, Llc Method for preparing an internal combustion engine for starting
US10343692B2 (en) * 2016-09-09 2019-07-09 Hyundai Motor Company Method and apparatus for preventing dieseling of engine for mild hybrid electric vehicle
US11519347B2 (en) * 2020-08-21 2022-12-06 Lg Electronics Inc. Gas engine heat pump and method of operating the same

Also Published As

Publication number Publication date
JPS5012426A (cs) 1975-02-08
CA988380A (en) 1976-05-04
JPS5392514U (cs) 1978-07-28
JPS5611636Y2 (cs) 1981-03-17
GB1424992A (en) 1976-02-11
DE2405180A1 (de) 1974-08-08

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