US3620511A - Carburetor system for combustion engines - Google Patents

Carburetor system for combustion engines Download PDF

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Publication number
US3620511A
US3620511A US868154A US3620511DA US3620511A US 3620511 A US3620511 A US 3620511A US 868154 A US868154 A US 868154A US 3620511D A US3620511D A US 3620511DA US 3620511 A US3620511 A US 3620511A
Authority
US
United States
Prior art keywords
idling
carburetor
intake duct
engine
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 - Lifetime
Application number
US868154A
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English (en)
Inventor
Gerd Reinhardt
Horst Heide
Sebastian Flinspach
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.)
Audi AG
Original Assignee
Audi AG
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 DE19681804339 external-priority patent/DE1804339C3/de
Application filed by Audi AG filed Critical Audi AG
Application granted granted Critical
Publication of US3620511A publication Critical patent/US3620511A/en
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
    • F02M3/00—Idling devices for carburettors
    • F02M3/08—Other details of idling devices
    • F02M3/12—Passageway systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B53/00—Internal-combustion aspects of rotary-piston or oscillating-piston engines
    • F02B53/10—Fuel supply; Introducing fuel to combustion space
    • 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

Definitions

  • the idling system together with the throttling flap is arranged in a flange interposed between the engine and intake duct.
  • the air nozzle of this idling system is connected to the intake duct by a passage located upstream from the throttling flapl
  • the idling system is arranged in the engine housing or the cylinder head itself. 1n this regard. the idling system is connected to the inlet passage by a line thereby providing for a short route for the idling mixture to the intake chamber of the combustion engine.
  • the invention relates to a carburetor system for combustion engines having a long intake duct, in particular rotary-piston combustion engines, comprising a main nozzle system (partial and full load) and an idling system as well as a throttling flap arranged in the intake duct.
  • the object of the invention is to avoid these disadvantages and provide a carburetor system in which separation of the idling mixture practically cannot occur.
  • This problem is solved, according to the invention, in that the idling system (idling fuel nozzle, idling air nozzle, idling mixture adjustment screw) is arranged separate from the main system, at a slight distance ahead of the opening of the idling mixture line into the intake duct or inlet passage, near the intake chamber.
  • the formation of the idling mixture takes place only just before introduction into the intake duct or inlet passage, so that there is no possibility of mixture separation. This ensures stable, uniform idling.
  • the idling system is preferably arranged in a flange between engine and intake duct, simplifying manufacture and assembly. It is expedient in that case to arrange the throttling flap in the flange as well, since it is thus possible by simple means to connect the air nozzle of the idling system by way of a passage to the intake duct at a point upstream from the throttling flap, so that filtered air is supplied to the idling system.
  • the idling system may alternatively be arranged in the engine housingor the cylinder head itself and connected to the inlet passage by a line. This results in especially short routes from the mouth of the idling mixture line to the intake chamber of the combustion engine.
  • the fuel nozzle of the idling system is preferably connected to the float chamber of the main nozzle system.
  • a check valve opening in the direction of flow be provided in the idling fuel line or idling mixture line. This check valve is opened by the suction in the intake duct, so that idling mixture can enter the engine in the normal way.
  • F l0. 1 shows a top view of a flange to be arranged between engine and intake duct with idling system according to the invention, in partial section;
  • FIG. 2 shows a section at the line A-A in FIG. 1, part of the engine and carburetor with main nozzle system being represented schematically.
  • a flange 3 arranged between engine 1 and intake duct 2 has two main inlet passages 4, each with a throttling flap 5.
  • Each main inlet passage 4 is associated with an idling inlet passage 6. Both passages 4 and 6 open into the engine inlet passage 7.
  • an idling air passage 8 extends from one of the main inlet passages 4 to a chamber 9. Passage 8 is calibrated in its final segment 8a, and serves at the same time as an idling air nozzle.
  • lnto chamber 9 opens a fuel line 10 in which the fuel nozzle 11 is arranged ahead of chamber 9.
  • the fuel line 10 is closable by a check valve 12, (a leaf spring valve in the embodiment of the example, but in principle of any type).
  • a check valve 12 a leaf spring valve in the embodiment of the example, but in principle of any type.
  • an idling mixture line 13 extends by way of an idling mixture adjusting screw 14 to each of the idling inlet passages 6.
  • the fuel line 10 of the idling system is in communication with the float chamber 17 of the main system.
  • an independent level control reservoir might equally be provided to feed the idling system.
  • the check valve 12 serves the purpose of preventing the fuel from being forced back into the float housing 17 or main nozzle system in case of pulsations in the idling inlet passage 6.
  • this check valve might alternatively be arranged in the idling mixture line 13.
  • a carburetor system for combustion engines of the rotary piston engine type comprising a carburetor having a main nozzle system and an idling system, the carburetor being connected to the inlet passage of the combustion engine and communicating with the intake chamber thereof by a relatively long intake duct having an upstream and downstream end, the idling system including fuel-air mixing means being arranged adjacent the downstream end of the intake duct :1 short distance ahead of the opening of the idling mixture line into the inlet passage close to the intake chamber of the engine so that idling fuel is mixed with idling air at a short distance from the inlet passage thereby minimizing air-fuel mixture separation in the idling system and accordingly assure uniform idling.
  • Carburetor system according to claim I wherein a throttling flap is arranged in the intake duct.
  • Carburetor system according to claim 1 wherein the fuel nozzle of the idling system is connected to the float chamber of the main nozzle system.

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)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
US868154A 1968-10-22 1969-10-21 Carburetor system for combustion engines Expired - Lifetime US3620511A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19681804339 DE1804339C3 (de) 1968-10-22 Gemischerzeugungssystem für Kreiskolben-Brennkraftmaschinen

Publications (1)

Publication Number Publication Date
US3620511A true US3620511A (en) 1971-11-16

Family

ID=5711097

Family Applications (1)

Application Number Title Priority Date Filing Date
US868154A Expired - Lifetime US3620511A (en) 1968-10-22 1969-10-21 Carburetor system for combustion engines

Country Status (4)

Country Link
US (1) US3620511A (enrdf_load_stackoverflow)
JP (1) JPS5429655B1 (enrdf_load_stackoverflow)
FR (1) FR2021212A1 (enrdf_load_stackoverflow)
GB (1) GB1250405A (enrdf_load_stackoverflow)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4091780A (en) * 1975-02-07 1978-05-30 Nissan Motor Company, Ltd. Car knock preventive system
US4124662A (en) * 1974-05-02 1978-11-07 Nissan Motor Company, Limited Carburetor and method of operating same
US4285887A (en) * 1979-01-29 1981-08-25 Honda Giken Kogyo Kabushiki Kaisha Carburetor
US5772928A (en) * 1996-06-14 1998-06-30 Holtzman; Barry L. Needle and seat valve assembly

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4462346A (en) * 1982-08-09 1984-07-31 Outboard Marine Corporation Dual fuel system for internal combustion engine
USRE32938E (en) * 1982-08-09 1989-06-06 Outboard Marine Corporation Dual fuel system for internal combustion engine

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1069502A (en) * 1911-11-08 1913-08-05 Peerless Motor Car Company Priming device for internal-combustion engines.
US2511213A (en) * 1945-04-26 1950-06-13 Stewart Warner Corp Carbureting apparatus
US2759716A (en) * 1954-01-21 1956-08-21 Acf Ind Inc Idling system for two-cycle engines
US3006327A (en) * 1956-01-30 1961-10-31 Holley Carburetor Co Fuel control
US3188062A (en) * 1962-05-29 1965-06-08 Standard Products Co Carburetor
US3283751A (en) * 1963-06-28 1966-11-08 Inst Khim Fysiki Internal combustion engine with jet ignition of a non-uniformly distributed working mixture from a precombustion chamber cut-off by the piston
US3382856A (en) * 1965-10-22 1968-05-14 Ford Motor Co Engine fuel induction system
US3475011A (en) * 1967-01-12 1969-10-28 Trw Inc Individual intake port carburetion system

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1069502A (en) * 1911-11-08 1913-08-05 Peerless Motor Car Company Priming device for internal-combustion engines.
US2511213A (en) * 1945-04-26 1950-06-13 Stewart Warner Corp Carbureting apparatus
US2759716A (en) * 1954-01-21 1956-08-21 Acf Ind Inc Idling system for two-cycle engines
US3006327A (en) * 1956-01-30 1961-10-31 Holley Carburetor Co Fuel control
US3188062A (en) * 1962-05-29 1965-06-08 Standard Products Co Carburetor
US3283751A (en) * 1963-06-28 1966-11-08 Inst Khim Fysiki Internal combustion engine with jet ignition of a non-uniformly distributed working mixture from a precombustion chamber cut-off by the piston
US3382856A (en) * 1965-10-22 1968-05-14 Ford Motor Co Engine fuel induction system
US3475011A (en) * 1967-01-12 1969-10-28 Trw Inc Individual intake port carburetion system

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4124662A (en) * 1974-05-02 1978-11-07 Nissan Motor Company, Limited Carburetor and method of operating same
US4091780A (en) * 1975-02-07 1978-05-30 Nissan Motor Company, Ltd. Car knock preventive system
US4285887A (en) * 1979-01-29 1981-08-25 Honda Giken Kogyo Kabushiki Kaisha Carburetor
US5772928A (en) * 1996-06-14 1998-06-30 Holtzman; Barry L. Needle and seat valve assembly

Also Published As

Publication number Publication date
FR2021212A1 (enrdf_load_stackoverflow) 1970-07-17
GB1250405A (enrdf_load_stackoverflow) 1971-10-20
DE1804339B2 (de) 1977-06-30
JPS5429655B1 (enrdf_load_stackoverflow) 1979-09-25
DE1804339A1 (de) 1970-05-21

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