SE0901522A1 - Carburetor for an internal combustion engine - Google Patents

Carburetor for an internal combustion engine

Info

Publication number
SE0901522A1
SE0901522A1 SE0901522A SE0901522A SE0901522A1 SE 0901522 A1 SE0901522 A1 SE 0901522A1 SE 0901522 A SE0901522 A SE 0901522A SE 0901522 A SE0901522 A SE 0901522A SE 0901522 A1 SE0901522 A1 SE 0901522A1
Authority
SE
Sweden
Prior art keywords
throttle
intake duct
carburettor
intake
internal combustion
Prior art date
Application number
SE0901522A
Other languages
Swedish (sv)
Inventor
Michael Blixt
Original Assignee
Michael Blixt
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 Michael Blixt filed Critical Michael Blixt
Priority to SE0901522A priority Critical patent/SE0901522A1/en
Priority to PCT/SE2010/000283 priority patent/WO2011068452A1/en
Publication of SE0901522A1 publication Critical patent/SE0901522A1/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
    • F02D9/08—Throttle valves specially adapted therefor; Arrangements of such valves in conduits
    • F02D9/12—Throttle valves specially adapted therefor; Arrangements of such valves in conduits having slidably-mounted valve members; having valve members movable longitudinally of conduit
    • F02D9/16—Throttle valves specially adapted therefor; Arrangements of such valves in conduits having slidably-mounted valve members; having valve members movable longitudinally of conduit the members being rotatable
    • 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
    • F02M9/00—Carburettors having air or fuel-air mixture passage throttling valves other than of butterfly type; Carburettors having fuel-air mixing chambers of variable shape or position
    • F02M9/08—Carburettors having air or fuel-air mixture passage throttling valves other than of butterfly type; Carburettors having fuel-air mixing chambers of variable shape or position having throttling valves rotatably mounted in the passage
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
    • F16K3/22—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution
    • F16K3/24—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution with cylindrical valve members
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
    • F16K3/30—Details
    • F16K3/314—Forms or constructions of slides; Attachment of the slide to the spindle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
    • F16K5/04—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having cylindrical surfaces; Packings therefor
    • F16K5/0428—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having cylindrical surfaces; Packings therefor with a cylindrical segment mounted around a supply pipe

Landscapes

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

Abstract

Föreliggande uppfinning avser en förgasare för en förbränningsmotor, innefattande ett förgasarhus (1), uppvisande en insugningskanal (1.1), som vid sin ena ände står i förbindelse med minst en insugningsöppning på motorn, och minst en trottel (2), som är vridbar in i respektive ut ur nämnda insugningskanal (1.1) kring minst en vridningsaxel (2.3). Nämnda trottel (2) uppvisar minst en trottelskiva (2.1) i form av ett avsnitt av en huvudsakligen cylinderformig hylsa, som är upphängd i minst en svängarm (2.2) anordnad på utsidan av nämnda insugningskanal (1.1), och vilken trottelskiva (2.1) är svängbar in i respektive ut ur nämnda insugningskanal (1.1).(Figur 1)The present invention relates to a carburettor for an internal combustion engine, comprising a carburettor housing (1), showing an intake duct (1.1), which at one end is in connection with at least one intake opening on the engine, and at least one throttle (2), which can be turned in in and out of said intake channel (1.1) around at least one axis of rotation (2.3). Said throttle (2) has at least one throttle disc (2.1) in the form of a section of a mainly cylindrical sleeve, which is suspended in at least one swing arm (2.2) arranged on the outside of said intake duct (1.1), and which throttle disc (2.1) is pivotable into or out of said intake duct (1.1). (Figure 1)

Description

15 20 25 30 slidtrottel medger visserligen skapande av en mycket kort insugningskanal, men har nackdelen att den kräver att förgasarhuset har en sådan höjd att trotteln kan dras ut helt från insugningskanalen för att ge fri luftgenomströmning. Förgasarhuset blir i en sådan konstruktion mycket skrymmande, vilket är en nackdel i trånga motorutrymmen. Although the slide throttle allows the creation of a very short intake duct, it has the disadvantage that it requires the carburettor housing to be of such a height that the throttle can be pulled completely out of the intake duct to provide free air flow. In such a construction, the carburettor housing becomes very bulky, which is a disadvantage in cramped engine spaces.

I US, A, 3 682 449 beskrivs en trottel med en trottelskiva i form av ett avsnitt av en cylinderformig hylsa, som är anordnad att svängas in i respektive ut från insugningskanalen. Denna typ av trottel medger att insugningskanalen kan ges en förhållandevis kort längd. Trotteln bärs upp av två svängarmar, som är anordnade på en gemensam axel, som sträcker sig genom insugningskanalen. Detta medför att insugningskanalen inte medger fri genomströmning då såväl svängarmarna som svängaxeln befinner sig i insugningskanalen när trottel befinner sig helt utsvängd.US, A, 3,682,449 discloses a throttle with a throttle disc in the form of a section of a cylindrical sleeve, which is arranged to be pivoted into and out of the intake duct, respectively. This type of throttle allows the intake duct to be given a relatively short length. The throttle is supported by two pivot arms, which are arranged on a common shaft, which extends through the intake duct. This means that the intake duct does not allow free flow as both the pivot arms and the pivot shaft are in the intake duct when the throttle is completely deflected.

Sammanfattning av uppfinningen Syftet med föreliggande uppfinning är att åstadkomma en förgasare som inte uppvisar de ovan nämnda nackdelarna men har fördelen med den närmast ovan nämnda trotteln. Uppfinningen omfattar sålunda en förgasare för en förbränningsmotor, innefattande ett förgasarhus, uppvisande en insugningskanal, som vid sin ena ände står i förbindelse med minst en insugningsöppning på motorn, och minst en trottel, som är vridbar in i respektive ut ur nämnda insugningskanal kring minst en vridningsaxel.SUMMARY OF THE INVENTION The object of the present invention is to provide a carburettor which does not have the above-mentioned disadvantages but has the advantage of the immediately above-mentioned throttle. The invention thus comprises a carburettor for an internal combustion engine, comprising a carburettor housing, having an intake duct, which at its one end communicates with at least one intake opening on the engine, and at least one throttle, which is rotatable into and out of said intake duct around at least one axis of rotation.

Nämnda trottel uppvisar minst en trottelskiva i form av ett avsnitt av en huvudsakligen cylinderformig hylsa, som är upphängd i minst en svängarm anordnad på utsidan av nämnda insugningskanal, och vilken trottelskiva är svängbar in i respektive ut ur nämnda insugningskanal.Said throttle has at least one throttle disc in the form of a section of a substantially cylindrical sleeve, which is suspended in at least one pivot arm arranged on the outside of said suction channel, and which throttle disc is pivotable into and out of said suction channel.

Två svängarmar kan uppbära och vara vridbara i var sin axeltapp, vilka har en gemensam vridningsaxel, som sträcker sig huvudsakligen vinkelrätt mot insugningskanalens längdriktning, och en lägesgivare kan stå i förbindelse med minst en av axeltapparna och vara anordnad att indikera trottelns läge och avge indikerade data till en styrenhet. 10 15 20 25 30 Ett insprutningsmunstycke kan vara anordnat att mynna i insug- ningskanalen. lnsugningskanalen kan uppvisa ett venturiavsnitt, och insprutningsmunstycket kan vara anordnat att mynna i venturiavsnittet.Two pivot arms may support and be rotatable in their respective shaft journals, which have a common axis of rotation extending substantially perpendicular to the longitudinal direction of the intake duct, and a position sensor may communicate with at least one of the shaft journals and be arranged to indicate throttle position and provide indicated data to a control unit. 10 15 20 25 30 An injection nozzle may be arranged to open into the intake duct. The suction duct may have a venturi section, and the injection nozzle may be arranged to open in the venturi section.

Med förgasaren enligt uppfinningen uppnår man att insugnings- kanalen medger en helt fri genomströmning vid fullt gaspådrag samtidigt som insugningskanalen kan göras mycket kort och förgasarhuset lågbyggt. Brän- sleinsprutningen kan också styras med hjälp av en lägesgivare som står i förbindelse med trotteln.With the carburettor according to the invention, it is achieved that the intake duct allows a completely free flow at full throttle, at the same time as the intake duct can be made very short and the carburettor housing low-built. The fuel injection can also be controlled by means of a position sensor which is connected to the throttle.

Figurförteckning Figur 1 visar, i snittad sidovy genom dess insugningskanal, en förgasare enligt uppfinningen.List of figures Figure 1 shows, in sectioned side view through its intake duct, a carburettor according to the invention.

Figur 2 visar, i perspektivvy, en skivformig och vridbar trottel ingående i förgasaren enligt figur 1.Figure 2 shows, in perspective view, a disc-shaped and rotatable throttle included in the carburettor according to figure 1.

Figur 3 visar, i snittad toppvy, förgasaren enligt figur 1.Figure 3 shows, in sectioned top view, the carburettor according to figure 1.

Beskrivning av utföringsformer Förgasaren, som visas i figurerna, innefattar ett förgasarhus 1, uppvisande en insugningskanal 1.1, vars i figur 1 högra öppning är avsedd att anslutas till en insugningsöppning i en förbränningsmotor. En trottel 2 med en trottelskiva 2.1 i form av en del av en cylinderformig hylsa, är upphängd i två svängarmar 2.2, som i sin tur är vridbara i axeltappar 2.3 i förgasarhuset 1. Trottelskivan 2.1 är rörlig i ett spår 1.2, som sträcker sig runt omkring undersidan av insugningskanalen 1.1, och visas ifigur 1 i ett halvöppet läge.Description of embodiments The carburettor, which is shown in the figures, comprises a carburettor housing 1, having an intake duct 1.1, the right opening of which in Figure 1 is intended to be connected to an intake opening in an internal combustion engine. A throttle 2 with a throttle plate 2.1 in the form of a part of a cylindrical sleeve, is suspended in two pivot arms 2.2, which in turn are rotatable in shaft pins 2.3 in the carburettor housing 1. The throttle plate 2.1 is movable in a groove 1.2, which extends around around the underside of the intake duct 1.1, and is shown in figure 1 in a semi-open position.

En elektronisk lägesgivare 2.4 är anordnad på förgasarhuset 1 och står i förbindelse med den ena av trottelns 2 axeltappar 2.3. Trottelskivans 2.1 läge vid olika gaspådrag åstadkoms på mekanisk väg t ex via en gaswire, som löper över en wiretrissa 2.5 anordnad på den andra av trottelns 2 axeltappar, med hjälp av ett gasreglage. Dessa anordningar är av känt slag och visas inte i figurerna. De båda axeltapparna 2.3 är lagrade i förgasarhuset 1 i kullager 5.An electronic position sensor 2.4 is arranged on the carburettor housing 1 and is connected to one of the shaft pins 2.3 of the throttle 2. The position of the throttle plate 2.1 at different throttle applications is achieved by mechanical means, for example via a gas wire, which runs over a wire pulley 2.5 arranged on the other of the throttle 2 shaft journals, by means of a throttle control. These devices are of known type and are not shown in the figures. The two shaft journals 2.3 are mounted in the carburettor housing 1 in ball bearings 5.

Ett insprutningsmunstycke 4 är anordnat vid den smalaste delen av ett venturiavsnitt i insugningskanalen 1.1 och riktat med en lutning mot 10 15 20 25 30 motorns insugningsöppning. lnsprutningsmunstycket 4 är anordnat rakt ovan- för den punkt i insugningskanalen 1.1 där trottelskivan 2.1 möter taket i in- sugningskanalen 1.1, se figur 1. lnsprutningsmunstycket 4 står i förbindelse med en insprutningspump (icke visad) för bränsle.An injection nozzle 4 is arranged at the narrowest part of a venturi section in the intake duct 1.1 and directed with a slope towards the intake opening of the engine. The injection nozzle 4 is arranged directly above the point in the intake duct 1.1 where the throttle plate 2.1 meets the roof of the intake duct 1.1, see figure 1. The injection nozzle 4 is connected to an injection pump (not shown) for fuel.

Vid gaspådrag vrids trottelskivan 2.1 i svängarmarna 2.2 från ett stängt läge, varvid vridningen indikeras med hjälp av lägesgivaren 2.4. Data beträffande trottelskivans 2.1 läge registreras i en elektronisk styrenhet (icke visad) i vilken mängden bränsle, som ska avges från munstycket 4, beräknas och ställs in, baserat på data för trottelns läge, undertrycket i insugningsöppningen, motortemperaturen och tändningsläget.When the throttle is applied, the throttle disc 2.1 in the pivot arms 2.2 is rotated from a closed position, the rotation being indicated by means of the position sensor 2.4. Data regarding the position of the throttle plate 2.1 is registered in an electronic control unit (not shown) in which the amount of fuel to be discharged from the nozzle 4 is calculated and set, based on data for the position of the throttle, the negative pressure in the intake opening, engine temperature and ignition position.

Uppfinningen är inte begränsad till de här visade utföringsformerna utan kan varieras inom ramen för efterföljande patentkrav.The invention is not limited to the embodiments shown here but can be varied within the scope of the appended claims.

Claims (4)

10 15 20 25 PATENTKRAV10 15 20 25 PATENT REQUIREMENTS 1. Förgasare för en förbränningsmotor, innefattande ett förgasarhus (1), uppvisande en insugningskanal (1.1), som vid sin ena ände står i förbindelse med minst en insugningsöppning på motorn, och minst en trottel (2), som är vridbar in i respektive ut ur nämnda insugningskanal (1 .1) kring minst en vridningsaxel (2.3), kännetecknad av att nämnda trottel (2) uppvisar minst en trottelskiva (2.1) i form av ett avsnitt av en huvudsakligen cylinderformig hylsa, som är upphängd i minst en svängarm (2.2) anordnad på utsidan av nämnda insugningskanal (1 .1), och vilken trottelskiva (2.1) är svängbar in i respektive ut ur nämnda insugningskanal (1 .1).Carburettor for an internal combustion engine, comprising a carburettor housing (1), having an intake duct (1.1), which at its one end communicates with at least one intake opening on the engine, and at least one throttle (2), which is rotatable into the respective out of said intake duct (1 .1) about at least one axis of rotation (2.3), characterized in that said throttle (2) has at least one throttle disc (2.1) in the form of a section of a substantially cylindrical sleeve, which is suspended in at least one pivot arm (2.2) arranged on the outside of said intake duct (1 .1), and which throttle disc (2.1) is pivotable into and out of said intake duct (1 .1), respectively. 2. Förgasare enligt krav 1, kännetecknad av att två svängarmar (2.2) uppbär och är vridbara i var sin axeltapp (2.3), vilka har en gemensam vridningsaxel, som sträcker sig huvudsakligen vinkelrätt mot insugningskanalens (1 .1) längdriktning, och att en Iägesgivare (2.4) står i förbindelse med minst en av axeltapparna (2.3) och är anordnad att indikera trottelns (2) läge och att avge indikerade data till en styrenhet.Carburettor according to claim 1, characterized in that two pivot arms (2.2) support and are rotatable in each shaft pin (2.3), which have a common axis of rotation, which extends substantially perpendicular to the longitudinal direction of the intake duct (1. 1), and that a Position sensor (2.4) communicates with at least one of the shaft pins (2.3) and is arranged to indicate the position of the throttle (2) and to output indicated data to a control unit. 3. Förgasare enligt krav 1 eller 2, kännetecknad av att ett insprutningsmunstycke (4) är anordnat att mynna i insugningskanalen (1 .1).Carburettor according to Claim 1 or 2, characterized in that an injection nozzle (4) is arranged to open in the intake duct (1 .1). 4. Förgasare enligt krav 3, kännetecknad av att insugningskanalen (1 .1) uppvisar ett venturiavsnitt, och att insprutningsmunstycket (4) är anordnat att mynna i venturiavsnittet.Carburettor according to Claim 3, characterized in that the intake duct (1, 1) has a venturi section, and in that the injection nozzle (4) is arranged to open into the venturi section.
SE0901522A 2009-12-04 2009-12-04 Carburetor for an internal combustion engine SE0901522A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
SE0901522A SE0901522A1 (en) 2009-12-04 2009-12-04 Carburetor for an internal combustion engine
PCT/SE2010/000283 WO2011068452A1 (en) 2009-12-04 2010-12-03 Throttle housing and carburettor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE0901522A SE0901522A1 (en) 2009-12-04 2009-12-04 Carburetor for an internal combustion engine

Publications (1)

Publication Number Publication Date
SE0901522A1 true SE0901522A1 (en) 2011-06-05

Family

ID=44115152

Family Applications (1)

Application Number Title Priority Date Filing Date
SE0901522A SE0901522A1 (en) 2009-12-04 2009-12-04 Carburetor for an internal combustion engine

Country Status (2)

Country Link
SE (1) SE0901522A1 (en)
WO (1) WO2011068452A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITBS20120153A1 (en) * 2012-10-29 2014-04-30 Ind Saleri Italo Spa REMOVABLE VALVE GROUP WITH IMPROVED SHUTTER
GB2598146B (en) * 2020-08-21 2022-11-09 Caterpillar Energy Solutions Gmbh Rotary valve

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE924002C (en) * 1952-12-16 1957-01-03 Erich Thuemmel Air-controlled float carburetor for gasoline engines
US2754095A (en) * 1953-09-16 1956-07-10 Thummel Erich Carburetor
GB2285486A (en) * 1994-01-05 1995-07-12 Ind De Precision Arbeo S A Carburettor throttle valve and starter assembly.
DE69816141T2 (en) * 1997-01-31 2004-01-08 Yamaha Hatsudoki K.K., Iwata Four-stroke internal combustion engine
JP4706775B2 (en) * 2009-04-06 2011-06-22 株式会社デンソー Intake device for internal combustion engine

Also Published As

Publication number Publication date
WO2011068452A1 (en) 2011-06-09

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