US3608532A - Wetting of intake manifold - Google Patents

Wetting of intake manifold Download PDF

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Publication number
US3608532A
US3608532A US820134A US3608532DA US3608532A US 3608532 A US3608532 A US 3608532A US 820134 A US820134 A US 820134A US 3608532D A US3608532D A US 3608532DA US 3608532 A US3608532 A US 3608532A
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US
United States
Prior art keywords
fuel
intake manifold
manifold
liquid fuel
engine
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
US820134A
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English (en)
Inventor
Robert N Balluff
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.)
Tenneco Inc
Original Assignee
Tenneco Inc
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 Tenneco Inc filed Critical Tenneco Inc
Application granted granted Critical
Publication of US3608532A publication Critical patent/US3608532A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • 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
    • F02M7/06—Means for enriching charge on sudden air throttle opening, i.e. at acceleration, e.g. storage means in passage way system
    • F02M7/08—Means for enriching charge on sudden air throttle opening, i.e. at acceleration, e.g. storage means in passage way system using pumps
    • 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
    • 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
    • F02M71/00—Combinations of carburettors and low-pressure fuel-injection apparatus
    • 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
    • Y10S261/00—Gas and liquid contact apparatus
    • Y10S261/19—Degassers

Definitions

  • U.S.C1. 123/139 AU, ABSTRACT A wetting System for the intake manifold of an 123/119 y 123/139 Aw automotive internal combustion engine.
  • the system includes [51] Int. Cl F02m 19/00 an intake if id and carburetor for delivering a charge m 0 Search B, the intake manifold A device is incorporated for hutting off 261/341 the flow of fuel during extreme decelerations to reduce the emission of smog producing constituents from the exhaust and References Cited nozzles deliver fuel from the accelerating pump to the intake UNITED STAT PATENTS manifold for rewetting the manifold upon reacceleration for 3,198,187 8/1965 Bartholomew 261/34.1 promoting smoother operation.
  • This invention relates to an internal combustion engine and more particularly to an improved fuel distribution system for such an engine and especially one which incorporates a structure for rewetting the manifold after extreme decelerations.
  • FIG. 1 is a cross-sectional, partially schematic view of an internal combustion engine embodying this invention.
  • FIG. 2 is an enlarged cross-sectional view taken along the line 2-2 of FIG. 1.
  • the engine'll includes one or more cylinders 12, an induction manifold 13 having indiyidualintakepassages or runners 14 for each of the cylinders 12 and a carburetor or other charge forming device 15 for delivering a combustible charge to the manifold 13.
  • a device of any known type (not shown) is provided for shutting off the flow of fuel from the carburetor 15 to the induction manifold 13 upon extreme decelerations. Any of the known fuel shut off device normally provided for this purpose may be employed in connection with this invention and for this reason such a device has not been shown.
  • such devices are responsive to induction system vacuum and operated to stop the flow of fuel to the manifold 13 when manifold vacuum exceeds a predetermined value.
  • the fuel shutoff may be accomplished by valves in the idle discharge circuit of the carburetor 15, by means of air bleeds or in accordance with any other method generally used for this purpose.
  • the manifold 13 has separate runners or passages 14 that supply a combustible charge to the respective cylinders 12.
  • the flow of such gases to the cylinders 12 is controlled by means of one or more poppet valves 16 that are positioned at the mouth of a port 17 in the cylinder head 18 of the engine.
  • the carburetor 15 includes a throttle valve 19 that controls the flow of air and fuel mixture through the carburetor induction passage 21. Fuel is delivered to this induction passage 21 from a fuel bowl 22 via one or more fuel delivery circuits which may include an idle and a main fuel circuit (not shown).
  • the carburetor 15 includes an accelerating pump, indicated generally by the reference numeral 23.
  • the accelerating pump is comprised of a bore 24 in which a piston 25 is supported.
  • the piston is connected to a piston rod 26 that is, in turn, connected in any suitable manner to the throttle linkage (not shown) that serves to actuate the throttle valve 19.
  • the throttle valve 19 closes, the piston 25 is drawn upwardly in the bore 24 to the position shown in FIG.
  • the engine 11 includes some form of device for shutting off the flow of fuel from the carburetor 15 to the intake manifold 13 upon extreme decelerations.
  • substantially no combustible mixture will be drawn into the cylinders 12 when the engine is otherwise operating as a pump and the emission of unburned hydrocarbons from the exhaust gases will be substantially if not completely reduced.
  • any liquid fuel droplets which may have accumulated in the runners 14 will be passed through the cylinders 12 leaving the manifold runners 14 completely dry of fuel.
  • the throttle valve 19 is reopened, there will be a small but nevertheless significant time lag before fuel is again transmitted from the fuel is again transmitted from the carburetor 15 through the runners 14 to the cylinders 12.
  • the accelerating pump 23 will drive additional fuel into the carburetor induction passage 21 during this condition, there will nevertheless be such a time or power lag and performance of the associated vehicle will be adversely affected.
  • injection nozzles 33 are provided in each of the manifold runners 14 adjacent the valve 16.
  • a conduit 34 extends from each of the injection nozzles back into a common supply pipe 35 (FIG. 2) that intersects the discharge nozzle 33 of the accelerating pump 23.
  • a charge-forming device for delivering a combustible charge of fuel and air to the intake manifold.
  • said device including an accelerating pump unit having an outlet passage for pumped liquid fuel and a charge forming chamber for mixing liquid fuel with air, said outlet passage leading to said'chamber, said pump including a bore and a piston in the bore, said piston having means for connection to throttle linkage of the engine so the liquid fuel is forced into said outletpassage upon accelerating movement of the throttle, means forming a second passage intersecting said outlet passage and receiving liquid fuel'thereform, an open conduit connected at one end to said second passage to receive liquid fuel upon operation of the pump, a nozzle in said intake manifold positioned to spray liquid fuel in said manifold toward said intake valve, the other end of the conduit being connected to and delivering fuel to the nozzle whereby operation of the accelerating pump delivers liquid fuel directly to the intake manifold to counteract dry wall and overcome lag in operation of the engine.

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  • 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)
  • Fuel-Injection Apparatus (AREA)
US820134A 1969-04-29 1969-04-29 Wetting of intake manifold Expired - Lifetime US3608532A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US82013469A 1969-04-29 1969-04-29

Publications (1)

Publication Number Publication Date
US3608532A true US3608532A (en) 1971-09-28

Family

ID=25229981

Family Applications (1)

Application Number Title Priority Date Filing Date
US820134A Expired - Lifetime US3608532A (en) 1969-04-29 1969-04-29 Wetting of intake manifold

Country Status (4)

Country Link
US (1) US3608532A (de)
DE (2) DE2016804C3 (de)
FR (1) FR2040403A1 (de)
GB (1) GB1282340A (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3970060A (en) * 1974-04-10 1976-07-20 Toyota Jidosha Kogyo Kabushiki Kaisha Fuel control apparatus
US4357923A (en) * 1979-09-27 1982-11-09 Ford Motor Company Fuel metering system for an internal combustion engine
US4368714A (en) * 1977-08-30 1983-01-18 Volkswagenwerk Aktiengesellschaft Fuel injection apparatus
US4370966A (en) * 1979-03-26 1983-02-01 Ntn Toyo Bearing Co., Ltd. Fuel feed system
US4454847A (en) * 1980-07-18 1984-06-19 Nippondenso Co., Ltd. Method for controlling the air-fuel ratio in an internal combustion engine
US20100170234A1 (en) * 2008-11-13 2010-07-08 Paul Anthony Way Injector Mounting Configuration for an Exhaust Treatment System

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2907812C2 (de) * 1979-02-28 1982-09-09 Bayerische Motoren Werke AG, 8000 München Vergaseranlage für Mehrzylinder-Brennkraftmaschinen

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2291431A (en) * 1941-04-21 1942-07-28 Borg Warner Accelerator device
US3198187A (en) * 1963-10-08 1965-08-03 Ethyl Corp Induction systems
US3254638A (en) * 1962-08-27 1966-06-07 Walker Carburetor idle fuel control
US3437081A (en) * 1965-06-11 1969-04-08 Sibe Fuel feed systems for internal combustion engines
US3447516A (en) * 1965-03-29 1969-06-03 Ethyl Corp Engine improvements

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2291431A (en) * 1941-04-21 1942-07-28 Borg Warner Accelerator device
US3254638A (en) * 1962-08-27 1966-06-07 Walker Carburetor idle fuel control
US3198187A (en) * 1963-10-08 1965-08-03 Ethyl Corp Induction systems
US3447516A (en) * 1965-03-29 1969-06-03 Ethyl Corp Engine improvements
US3437081A (en) * 1965-06-11 1969-04-08 Sibe Fuel feed systems for internal combustion engines

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3970060A (en) * 1974-04-10 1976-07-20 Toyota Jidosha Kogyo Kabushiki Kaisha Fuel control apparatus
US4368714A (en) * 1977-08-30 1983-01-18 Volkswagenwerk Aktiengesellschaft Fuel injection apparatus
US4370966A (en) * 1979-03-26 1983-02-01 Ntn Toyo Bearing Co., Ltd. Fuel feed system
US4357923A (en) * 1979-09-27 1982-11-09 Ford Motor Company Fuel metering system for an internal combustion engine
US4454847A (en) * 1980-07-18 1984-06-19 Nippondenso Co., Ltd. Method for controlling the air-fuel ratio in an internal combustion engine
US20100170234A1 (en) * 2008-11-13 2010-07-08 Paul Anthony Way Injector Mounting Configuration for an Exhaust Treatment System
US8726643B2 (en) 2008-11-13 2014-05-20 Donaldson Company, Inc. Injector mounting configuration for an exhaust treatment system
US9453447B2 (en) 2008-11-13 2016-09-27 Donaldson Company, Inc. Injector mounting configuration for an exhaust treatment system

Also Published As

Publication number Publication date
DE7012836U (de) 1970-11-05
FR2040403A1 (de) 1971-01-22
DE2016804A1 (de) 1970-11-12
GB1282340A (en) 1972-07-19
DE2016804B2 (de) 1973-03-15
DE2016804C3 (de) 1973-10-04

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