DE2543242C2 - Intake funnels for Otto engines with mechanical or electronic fuel injection - Google Patents

Intake funnels for Otto engines with mechanical or electronic fuel injection

Info

Publication number
DE2543242C2
DE2543242C2 DE19752543242 DE2543242A DE2543242C2 DE 2543242 C2 DE2543242 C2 DE 2543242C2 DE 19752543242 DE19752543242 DE 19752543242 DE 2543242 A DE2543242 A DE 2543242A DE 2543242 C2 DE2543242 C2 DE 2543242C2
Authority
DE
Germany
Prior art keywords
funnel
throttle valve
axis
intake
holder
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
DE19752543242
Other languages
German (de)
Other versions
DE2543242A1 (en
Inventor
Günther 7057 Winnenden Irmscher
Klaus 7061 Berglen Schuppener
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.)
IRMSCHER KG 7057 WINNENDEN DE
Original Assignee
IRMSCHER KG 7057 WINNENDEN DE
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 IRMSCHER KG 7057 WINNENDEN DE filed Critical IRMSCHER KG 7057 WINNENDEN DE
Priority to DE19752543242 priority Critical patent/DE2543242C2/en
Publication of DE2543242A1 publication Critical patent/DE2543242A1/en
Application granted granted Critical
Publication of DE2543242C2 publication Critical patent/DE2543242C2/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
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/10242—Devices or means connected to or integrated into air intakes; Air intakes combined with other engine or vehicle parts
    • F02M35/10255—Arrangements of valves; Multi-way valves
    • 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
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/10091—Air intakes; Induction systems characterised by details of intake ducts: shapes; connections; arrangements
    • F02M35/10118—Air intakes; Induction systems characterised by details of intake ducts: shapes; connections; arrangements with variable cross-sections of intake ducts along their length; Venturis; Diffusers
    • 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
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/10209—Fluid connections to the air intake system; their arrangement of pipes, valves or the like
    • F02M35/10216—Fuel injectors; Fuel pipes or rails; Fuel pumps or pressure regulators
    • 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
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/104—Intake manifolds
    • 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
    • F02M69/00—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel
    • F02M69/04—Injectors peculiar thereto
    • F02M69/042—Positioning of injectors with respect to engine, e.g. in the air intake conduit
    • F02M69/044—Positioning of injectors with respect to engine, e.g. in the air intake conduit for injecting into the intake conduit downstream of an air throttle valve
    • 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
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/10314—Materials for intake systems
    • F02M35/10321—Plastics; Composites; Rubbers
    • 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
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/10314—Materials for intake systems
    • F02M35/10327—Metals; Alloys
    • 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
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/1034—Manufacturing and assembling intake systems
    • F02M35/10347—Moulding, casting or the like
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
    • F05C2225/00—Synthetic polymers, e.g. plastics; Rubber
    • F05C2225/08—Thermoplastics

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)

Description

Die Erfindung betrifft einen Ansaugtrichter für Otto-Motoren mit mechanischer oder elektronischer Kraftstoffeinspritzung, mit einer eingebauten Drosselklappe.The invention relates to an intake funnel for Otto engines with mechanical or electronic fuel injection, with a built-in throttle valve.

Derartige Ansaugtrichter werden für die Motoren von Renn- und Ralley-Kraftfahrzeugen verwendet. Die zur Gasstromsteuerung benutzte Drosselklappe befindet sich bei den bekannten Ansaugtrichtern an deren Gasaustrittsende. Dort s;tört die Drosselklappe die Gasströmung besonders stark, weil die maximale Strömungsgeschwindigkeit auf der Trichterlängsachse erreicht wird. Insbesondere bei Vollgas, d. h. ganz geöffneter Drosselklappe, bietet diese dem Gasstrom eine Störfront dar, die sich ungünstig auf die Motorleistung auswirkt. Such velocity stacks are used for the engines of racing and rally automobiles. the The throttle valve used for gas flow control is located on the known intake funnels Gas outlet end. There, the throttle valve interferes with the gas flow particularly strongly because of the maximum flow velocity is reached on the funnel longitudinal axis. Especially at full throttle, i. H. quite open Throttle valve, this presents a disturbance front to the gas flow, which has an unfavorable effect on the engine performance.

Der Erfindung liegt daher die Aufgabe zugrunde, einen Ansaugtrichter der eingangs genannten Art zu schaffen, dessen Drosselklappe die Gasströmung möglichst wenig stört und dennoch voll wirksam arbeitet, so daß der damit ausgerüstete Motor die erwartete Leistung bei allen Gasstromstärken erbringt.The invention is therefore based on the object of providing a suction funnel of the type mentioned at the beginning create whose throttle valve disturbs the gas flow as little as possible and still works fully effectively, so that the motor equipped with it provides the expected performance at all gas flow rates.

Die Erfindung beruht auf der Erkenntnis, daß die stegige konvexe Aufwölbung des Lufteintrittsendes am Ansaugtrichter ein Profil der Strömungsgeschwindigkeit ergibt, welches nicht wie am Gasaustrittsende auf der Trichterlängsachse ein Maximum, sondern im Gegenteil ein Zwischenminimum aufweist.The invention is based on the knowledge that the ribbed convex bulge of the air inlet end on Intake funnel gives a profile of the flow velocity, which is not like at the gas outlet end the funnel longitudinal axis has a maximum, but on the contrary has an intermediate minimum.

Die gestellte Aufgabe ist davon ausgehend erfindungsgemäß dadurch gelöst, daß die Drosselklappe am Lufteintrittsende angeordnet und ein Halter für eine Einspritzdüse vorgesehen ist, welcher eine unmittelbar hinter der Drosselklappe in den Trichterhohlraum mündende Bohrung aufweist, deren Achse in einer senkrecht zur Drehachse der Drosselklappe verlaufenden, die Trichterlängsachse enthaltenden Ebene liegt. Durch diese Anordnung der Drosselklappe wird erreicht, daß ihr auf der Trichterlängsachse liegendes Zentrum mit dem Zwischenminimum der Strömungsgeschwindigkeit zusammenfällt. Daraus resultiert beim Gasgeben und insbesondere bei Vollgas eine vorteilhafte Wirkung im Sinne einer stetigen Veränderung der Motorleistung. Weil der Halter für die EinsDritzdüse nach der Erfindung direkt hinter der Drosselklappe sitzt, trifft der durch die in der erfindungsgemäßen Weise ausgebildete Bohrung eingespritzte, einen Kegelmantel bildende Kraftstoff bei etwas geöffneter Drosselklappe auf eine Luftströmung, der jeweils ein am Klappenrand gelegener, sichelförmiger Querschnitt zur Verfügung steht. Im Bereich dieses Querschnittes herrscht jeweils maximale Strömungsgeschwindigkeit, so daß die Vergasung des durch.Einspritzen zerstäubten Kraftstoffes schnell und vollständig vor sich gehtBased on this, the object is achieved according to the invention in that the throttle valve on Arranged air inlet end and a holder for an injection nozzle is provided, which a directly has behind the throttle valve opening into the funnel cavity bore, the axis of which in a perpendicular to the axis of rotation of the throttle valve, the plane containing the longitudinal axis of the funnel lies. By this arrangement of the throttle valve is achieved that its center lying on the longitudinal axis of the funnel with the intermediate minimum of the flow velocity coincides. This results in accelerating and especially at full throttle an advantageous effect in terms of a constant change in engine power. Because the holder for the EinsDritzdüse according to the invention sits directly behind the throttle valve, it hits injected through the bore formed in the manner according to the invention, forming a cone shell Fuel with the throttle valve slightly open to an air flow, each of which is located on the edge of the valve, sickle-shaped cross-section is available. In each case, there is a maximum in the area of this cross-section Flow rate, so that the gasification of the fuel atomized by injecting quickly and completely going on

Versuche haben gezeigt, daß der Ansaugtrichter nach der Erfindung den bekannten Ansaugtrichtern mit Schieber ebenbürtig ist und deren Nachteil vermeidet, welcher darin besteht, daß einerseits der auf der Stauseite des Schiebers entstehende Überdruck und der Unterdruck auf der anderen Seite des Schiebers sowie andererseits eventuell in die Schieberführung eingedrungener Schmutz den Schieber so schwergängig machen können, daß er nicht mehr bewegbar ist und die Gas-Stromsteuerung ganz ausfällt.Tests have shown that the suction funnel according to the invention with the known suction funnels Slide is equal and avoids its disadvantage, which is that on the one hand the one on the storage side of the slide resulting overpressure and the negative pressure on the other side of the slide and on the other hand Any dirt that may have penetrated the slide guide will make the slide so stiff can that it can no longer be moved and the gas flow control fails completely.

Bei einer bevorzugten Ausführungsform des erfindungsgemäßen Ansaugtrichters ist der Halter für die Einspritzdüse einstückig angeformt. In diesem Fall kann der Ansaugirichter einschließlich seines Halters, aber natürlich ausschließlich seiner Drosselklappe, vorteilhafterweise gegossen werden, wozu sich Aluminiumguß und Kunststoff eignen.In a preferred embodiment of the invention Intake funnel, the holder for the injection nozzle is formed in one piece. In this case it can the intake manifold including its holder, but of course only its throttle valve, advantageously be cast, including cast aluminum and plastic.

Bei der bevorzugten Ausführungsform ist ferner vorgesehen, daß die Achse der Bohrung des Halters die Trichterlängsachse unter einem spitzen Winkel von ungefähr 35° schneidet. Dieser Wert wurde als der in den meisten Fällen günstigste ermittelt.In the preferred embodiment it is also provided that the axis of the bore of the holder Longitudinal funnel axis intersects at an acute angle of approximately 35 °. This value was considered to be that in the determined most favorable in most cases.

Im folgenden ist die Erfindung anhand der durch die Zeichnung beispielhaft dargestellten, bevorzugten Ausführungsform des erfindungsgemäßen Ansaugtrichters im einzelnen erläutert. Es zeigtIn the following, the invention is based on the preferred embodiment shown by way of example in the drawing of the intake funnel according to the invention explained in detail. It shows

F i g. 1 einen zentralen Längsschnitt durch die Ausführungsform undF i g. 1 shows a central longitudinal section through the embodiment and

F i g. 2 eine zur Hälfte geschnittene Draufsicht auf die Ausführungsform.F i g. Fig. 2 is a plan view, cut in half, of the embodiment.

Der Grundkörper der Ausführungsform ist im wesentlichen hohlkegelstumpfförmig ausgebildet. Am Gasaustrittsende (in der Zeichnung rechts) befindet sich ein Flansch 2 zur Befestigung des Ansaugtrichters am Zylinderkopf eines Otto-Motors mit mechanischer oder elektronischer Kraftstoffeinspritzung. Das Lufteintrittsende 4 des Trichters ist so nach außen aufgewölbt, daß sich eine stetige konvexe Innenfläche 6 ergibt. Im konischen Abschnitt 8 des Trichters, jedoch unmittelbar hinter dem Lufteintrittsende 4, sitzt eine scheibenförmige Drosselklappe 10, deren Welle 12 in zwei fluchtenden Bohrungen 14 drehbar gelagert ist. Die Drehachse 16 der Drosselklappe 10 schneidet die Trichterlängsachse 18 senkrecht. Auf der Außenseite des Ansaugtrichters ist an dessen konischen Abschnitt 8 direkt hinter der Drosselklappe 10 ein Halter 20 für eine nicht dargestellte einschraubbare Einspritzdüse angeformt. Der Halter 20 weist eine Bohrung 22 auf, durch die der Kraftstoff in den Trichterhohlraum gespritzt wird. Die Achse 24 der Bohrung 22 liegt dabei in einer senkrecht zur Drehachse 16 der Drosselklappe 10 verlaufenden, die Trichterlängsachse 18 enthaltenden Ebene, die mit der Zeichenebene von Fig. 1 übereinstimmt, und schneidet die Trichterlängsachse 18 unter einem spitzen Winkel λ von 35°. The main body of the embodiment is designed essentially in the shape of a hollow truncated cone. At the gas outlet end (on the right in the drawing) there is a flange 2 for fastening the intake funnel to the cylinder head of a gasoline engine with mechanical or electronic fuel injection. The air inlet end 4 of the funnel is arched outward so that a continuous convex inner surface 6 results. In the conical section 8 of the funnel, but directly behind the air inlet end 4, there is a disk-shaped throttle valve 10, the shaft 12 of which is rotatably mounted in two aligned bores 14. The axis of rotation 16 of the throttle valve 10 intersects the funnel longitudinal axis 18 perpendicularly. On the outside of the intake funnel, a holder 20 for a screw-in injection nozzle (not shown) is formed on its conical section 8 directly behind the throttle valve 10. The holder 20 has a bore 22 through which the fuel is injected into the funnel cavity. The axis 24 of the bore 22 lies in a plane which runs perpendicular to the axis of rotation 16 of the throttle valve 10 and contains the longitudinal axis 18 of the funnel and which corresponds to the plane of the drawing in FIG. 1, and intersects the longitudinal axis 18 of the funnel at an acute angle λ of 35 °.

Hierzu 1 Blatt Zeichnungen1 sheet of drawings

Claims (4)

Patentansprüche:Patent claims: 1. Ansaugtrichter für Otto-Motoren mit mechanischer oder elektronischer Kraftstoffeinspritzung, mit einer eingebauten Drosselklappe, dadurch gekennzeichnet, daß die Drosselklappe (10) am Lufteintrittsende (4) angeordnet und ein Halter (20) für eine Einspritzdüse vorgesehen ist, welcher eine unmittelbar hinter der Drosselklappe in den Trichterhohlraum mündende Bohrung (22) aufweist, deren Achse (24) in einer senkrecht zur Drehachse (16) der Drosselklappe verlaufenden, die Trichterlängsachse (18) enthaltenden Ebene liegt1. Intake funnels for Otto engines with mechanical or electronic fuel injection, with a built-in throttle, thereby characterized in that the throttle valve (10) is arranged at the air inlet end (4) and a holder (20) is provided for an injection nozzle, which is a directly behind the throttle valve in the Has funnel cavity opening bore (22), the axis (24) in a perpendicular to the axis of rotation (16) of the throttle valve extending, the funnel longitudinal axis (18) containing plane 2. Ansaugtrichter nach Anspruch 1, dadurch gekennzeichnet, daß der Halter (20) einstückig angeformt ist.2. Intake funnel according to claim 1, characterized in that the holder (20) is formed in one piece is. 3. Ansaug trichter nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Achse (24) der Bohrung (22) des Halters (20) die Trichterlängsachse (18) unter einem spitzen Winkel {x) von ungefähr 35° schneidet.3. Suction funnel according to claim 1 or 2, characterized in that the axis (24) of the bore (22) of the holder (20) intersects the longitudinal axis (18) of the funnel at an acute angle {x) of approximately 35 °. 4. Ansaugtrichter nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß er bis auf die Drosselklappe (10) gegossen ist.4. Suction funnel according to one of claims 1 to 3, characterized in that it is up to the throttle valve (10) is poured.
DE19752543242 1975-09-27 1975-09-27 Intake funnels for Otto engines with mechanical or electronic fuel injection Expired DE2543242C2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19752543242 DE2543242C2 (en) 1975-09-27 1975-09-27 Intake funnels for Otto engines with mechanical or electronic fuel injection

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19752543242 DE2543242C2 (en) 1975-09-27 1975-09-27 Intake funnels for Otto engines with mechanical or electronic fuel injection

Publications (2)

Publication Number Publication Date
DE2543242A1 DE2543242A1 (en) 1977-04-07
DE2543242C2 true DE2543242C2 (en) 1984-07-05

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ID=5957658

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19752543242 Expired DE2543242C2 (en) 1975-09-27 1975-09-27 Intake funnels for Otto engines with mechanical or electronic fuel injection

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DE (1) DE2543242C2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5598654A (en) * 1979-01-23 1980-07-26 Toyota Motor Corp Fuel injection type multi-cylindered internal combustion engine
GB2195394A (en) * 1986-09-17 1988-04-07 Ford Motor Co Fuel injection system component

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE818884C (en) * 1949-12-28 1951-10-29 Heinrich Liman Petrol injection device for vehicle engines
DE1576599A1 (en) * 1967-04-20 1970-06-18 Porsche Kg Intake line for internal combustion engines, especially gasoline engines
US3670706A (en) * 1969-08-20 1972-06-20 Nippon Denso Co Fuel injection control system for internal combustion engines
DE2208646C2 (en) * 1972-02-24 1986-11-06 Robert Bosch Gmbh, 7000 Stuttgart Injection valve fastener to diesel engine suction manifold - has two or more injectors connected with common rigid fuel supply tube supported via resilient plastics member
DE2349669A1 (en) * 1973-10-03 1975-04-17 Bosch Gmbh Robert FUEL INJECTION SYSTEM

Also Published As

Publication number Publication date
DE2543242A1 (en) 1977-04-07

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8110 Request for examination paragraph 44
D2 Grant after examination
8363 Opposition against the patent
8331 Complete revocation