DE3321813A1 - Fuel injection system for a multi-cylinder internal combustion engine with an atomising nozzle composed of mixture and liquid nozzle - Google Patents

Fuel injection system for a multi-cylinder internal combustion engine with an atomising nozzle composed of mixture and liquid nozzle

Info

Publication number
DE3321813A1
DE3321813A1 DE19833321813 DE3321813A DE3321813A1 DE 3321813 A1 DE3321813 A1 DE 3321813A1 DE 19833321813 DE19833321813 DE 19833321813 DE 3321813 A DE3321813 A DE 3321813A DE 3321813 A1 DE3321813 A1 DE 3321813A1
Authority
DE
Germany
Prior art keywords
injection system
fuel injection
internal combustion
combustion 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.)
Ceased
Application number
DE19833321813
Other languages
German (de)
Inventor
Klaus 7000 Stuttgart Meier
Viktor Dipl.-Ing. 7000 Stuttgart Pfeffer
Bernd 7447 Aich-Aichtal Platten
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.)
Daimler Benz AG
Original Assignee
Daimler Benz 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
Application filed by Daimler Benz AG filed Critical Daimler Benz AG
Priority to DE19833321813 priority Critical patent/DE3321813A1/en
Publication of DE3321813A1 publication Critical patent/DE3321813A1/en
Ceased 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
    • F02M69/00—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel
    • F02M69/08—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel characterised by the fuel being carried by compressed air into main stream of combustion-air
    • 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
    • F02M67/00—Apparatus in which fuel-injection is effected by means of high-pressure gas, the gas carrying the fuel into working cylinders of the engine, e.g. air-injection type
    • F02M67/02—Apparatus in which fuel-injection is effected by means of high-pressure gas, the gas carrying the fuel into working cylinders of the engine, e.g. air-injection type the gas being compressed air, e.g. compressed in pumps
    • F02M67/04—Apparatus in which fuel-injection is effected by means of high-pressure gas, the gas carrying the fuel into working cylinders of the engine, e.g. air-injection type the gas being compressed air, e.g. compressed in pumps the air being extracted from working cylinders of the engine

Abstract

The invention relates to a fuel injection system for a multi-cylinder internal combustion engine with applied ignition, in which, in addition to the fuel from the fuel system, pressurised gas is also fed by way of a feed line to an atomising nozzle fitted on the intake pipe. The gas formed in the combustion chamber of at least one cylinder of the internal combustion engine is used as pressurised gas. This measure considerably reduces the energy expended in feeding gas to the atomising nozzle.

Description

Kraftstoffeinspritzanlage für eine mehrzylin- Fuel injection system for a multi-cylinder

drige Brennkraftmaschine mit einer sich aus Gemisch- und Flüssigkeitsdüse zusammensetzenden Zerstäubungsdüse Die Erfindung bezieht sich auf eine Kraftstoffeinspritzanlage für eine mehrzylindrige Brennkraftmaschine, mit einer sich aus Gemisch- und Flüssigkeitsdüse zusammensetzenden Zerstäubungsdüse nach dem Oberbegriff des Patentanspruches 1. Drige internal combustion engine with a mixture and liquid nozzle Composite Atomizing Nozzle The invention relates to a fuel injection system for a multi-cylinder internal combustion engine, with a mixture and liquid nozzle composite atomizing nozzle according to the preamble of claim 1.

Aus der DE-OS 28 26 025 ist eine Kraftstoffeinspritzanlage bekannt, deren Zerstäubungsdüse, die nach dem "Zweiphaseneffekt" den Kraftstoff mit Hilfe von Luft aufbereitet, die erforderliche Luftmenge von einem Frischluft ansaugenden Luftverdichter erhält.From DE-OS 28 26 025 a fuel injection system is known, its atomizer nozzle, which according to the "two-phase effect" the fuel with the help conditioned by air, the required amount of air from a fresh air sucking in Air compressor receives.

Der Erfindung liegt die Aufgabe zugrunde, eine Kraftstoffeinspritzanlage der eingangs genannten Art zu schaffen, bei der der Energieaufwand für die Gasbereitstellung möglichst klein gehalten werden kann.The invention is based on the object of a fuel injection system to create of the type mentioned, in which the energy expenditure for the gas supply can be kept as small as possible.

Diese Aufgabe wird gemäß der Erfindung durch die im Kennzeichen des Anspruches 1 angegebenen Merkmale gelöst, wobei in den Unteransprüchen vorteilhafte und förderliche Weiterbildungen beansprucht sind.This object is achieved according to the invention by the in the characterizing part of the Claim 1 specified features solved, with advantageous in the subclaims and beneficial further training is required.

Dadurch, daß die zur Zerstäubung erforderliche Gasmenge nicht von einem Kompressor bereitgestellt wird, sondern dem Brennraum mindestens eines Zylinders entweder während der Kompressionsphase als erwärmte Luft oder während der Expansionsphase als warmes Abgas entnommen wird, führt die hohe Luft- bzw. Abgastemperatur zu einer besseren Zerstäubung des Kraftstoffes. Die auf diese Artxdurchgeführte Gasentnahme verringert.den Energieaufwand- für die Gaszuführung erheblich.The fact that the amount of gas required for atomization is not of a compressor is provided, but the combustion chamber of at least one cylinder either during the compression phase as heated air or during the expansion phase is withdrawn as warm exhaust gas, the high air or exhaust gas temperature leads to a better atomization of the fuel. The gas extraction carried out in this way reduces the energy consumption for the gas supply considerably.

Die Erfindung ist anhand eines in der Zeichnung veranschaulichten Ausführungsbeispieles im folgenden näher beschrieben.The invention is illustrated by means of one in the drawing Embodiment described in more detail below.

Bei einer Kraftstoffversorgungsanlage 1 für eine mehrzylindrige Brennkraftmaschine 2 mit Fremdzündung ist eine Zerstäubungsdüse 3 an einem Ansaugrohr 4 zwischen einer Drosselklappe 5 und einem Ansaugverteiler 6 angeordnet, von dem Einzelsaugrohre 7 zu jeweiligem Einlaßkanälen 8 der Brennkraftmaschine führen.In a fuel supply system 1 for a multi-cylinder internal combustion engine 2 with external ignition is an atomizing nozzle 3 on an intake pipe 4 between a Throttle valve 5 and an intake manifold 6 arranged from the individual intake manifolds 7 lead to the respective inlet channels 8 of the internal combustion engine.

Die Zerstäubungsdüse 3, die auch stromauf der Drosselklappe 5 angeordnet sein kann, besteht aus einer nicht näher dargestellten Flüssigkeitsdüse und Gemischdüse. An der Gemischdüse ist eine Zuführleitung 9 angeschlossen, die über einen im Zylinderkopf 10 der Brennkraftmaschine verlaufenden Kanal 11 mit dem Brennraum 12 eines Zylinders verbunden ist.The atomizing nozzle 3, which is also arranged upstream of the throttle valve 5 can be, consists of a liquid nozzle and mixture nozzle, not shown in detail. A feed line 9 is connected to the mixture nozzle, the above a duct 11 running in the cylinder head 10 of the internal combustion engine with the combustion chamber 12 of a cylinder is connected.

Das zur Zerstäubung erforderliche Gas (Luft oder Abgas) wird dem Brennraum 12 entnommen und strömt durch die Zuführleitung 9 in einen zwischengelagerten Ausgleichsbehälter 13, von dem das Gas unter konstantem Druck permanent der Zerstäubungsdüse 3 zugeführt wird. Damit der Gasdruck in diesem Ausgleichsbehälter 13 konstant bleibt, und kein Gas in den Brennraum 12 zurückströmen kann, ist in der Zuführleitung 9 in Strömungsrichtung zunächst ein Druckregelventil 14 und dann ein Rückschlagventil 15 vorgesehen.The gas (air or exhaust gas) required for atomization is fed into the combustion chamber 12 removed and flows through the supply line 9 into an intermediate reservoir 13, from which the gas is permanently fed to the atomizing nozzle 3 under constant pressure will. So that the gas pressure in this expansion tank 13 remains constant, and no Gas can flow back into the combustion chamber 12 is in the supply line 9 in the direction of flow first a pressure control valve 14 and then a check valve 15 are provided.

Die Kraftstoffversorgung erfolgt durch eine Förderpumpe 16 und einen Kraftstoffmengenregler 17, der die angesaugte Verbrennungsluftmenge an der Stelle 18 im Ansaugrohr 4 zur Regelgröße hat.The fuel is supplied by a feed pump 16 and a Fuel quantity regulator 17, which controls the amount of combustion air drawn in at the point 18 in the intake pipe 4 is the controlled variable.

Der unter Druck der Flüssigkeitsdüse zugeführte Kraftstoff bildet in der Mischkammer der Zerstäubungsdüse 3 gemeinsam mit dem dem Brennraum 12 entnommenen und über die Zuführleitung 9 unter Druck einströmenden Gas ein Kraftstoff-Gas-Gemisch, das bei genügend hohem Druck am Düsenaustritt Schallgeschwindigkeit erreicht und durch den Drucksprung am Düsenende feinst zerstäubt in das Ansaugrohr 4 gelangt.The fuel supplied under pressure to the liquid nozzle forms in the mixing chamber of the atomizing nozzle 3 together with that taken from the combustion chamber 12 and a gas-fuel mixture flowing in under pressure via the supply line 9, which reaches the speed of sound with sufficiently high pressure at the nozzle outlet and Due to the pressure jump at the nozzle end, it is finely atomized and enters the suction pipe 4.

- Leerseite -- blank page -

Claims (4)

Patentansprüche Kraftstoffeinspritzanlage für eine mehrzylindrige r ennkraftmaschine, insbesondere fremdgezündete Brennkraftmaschine, mit einer sich aus Gemisch- und Flüssigkeitsdüse zusammensetzenden Zerstäubungsdüse, bei der Kraftstoff unter Druck einer Mischkammer zuführbar ist und dort gemeinsam mit dem über eine Zuführleitung unter Druck einströmenden Gas ein Kraftstoff-Gas-Gemisch bildet, das in den zum Ansaugverteiler führenden Ansaugrohr mit Schallgeschwindigkeit eingespritzt wird, dadurch gekennzeichnet, daß das in dem Brennraum (12) mindestens eines Zylinders der Brennkraftmaschine (2) gebildete Gas als Druckgas über die Zuführleitung (9) der Zerstäubungsdüse (3) ständig zuführbar ist. Claims fuel injection system for a multi-cylinder racing engine, in particular externally ignited internal combustion engine, with a self Atomizing nozzle composed of mixture and liquid nozzle, in which fuel can be fed under pressure to a mixing chamber and there together with the one Supply line under pressure flowing gas forms a fuel-gas mixture that injected into the intake pipe leading to the intake manifold at the speed of sound is, characterized in that in the combustion chamber (12) at least one cylinder the internal combustion engine (2) formed gas as compressed gas via the supply line (9) the atomizing nozzle (3) can be continuously fed. 2. Kraftstoffeinspritzanlage nach Anspruch 1, dadurch gekennzeichnet, daß die Zuführleitung (9) an dem Zylinderkopf (10) der Brenllkraftlllasc}line (2) angeschlossen und über einen Kanal (11) mit dem Brennraum (12) verbunden ist.2. Fuel injection system according to claim 1, characterized in that that the supply line (9) on the cylinder head (10) of the Brenllkraftlllasc} line (2) connected and connected to the combustion chamber (12) via a channel (11). 3. Kraftstoffeinspritzanlage nach den Ansprüchen 1 und 2, dadurch gekennzeichet, daß in der Zuführleitung (9) ein Ausgleichsbehälter (13) sowie ein von diesem stromauf liegendes Rückschlagventil (15) und ein Druckregelventil (14) vorgesehen sind.3. Fuel injection system according to claims 1 and 2, characterized marked that in the supply line (9) an expansion tank (13) and a from this upstream check valve (15) and a pressure control valve (14) are provided. 4. Kraftstoffeinspritzanlage nach den Ansprüchen 1 bis 3, d a d u r c h g e k e n n z e i c h n e t, daß das Druckregelventil (14) an der brennraumseitigen Mündung des Kanals (11) angeordnet ist.4. Fuel injection system according to claims 1 to 3, d a d u It is noted that the pressure control valve (14) is on the combustion chamber side Mouth of the channel (11) is arranged.
DE19833321813 1983-06-16 1983-06-16 Fuel injection system for a multi-cylinder internal combustion engine with an atomising nozzle composed of mixture and liquid nozzle Ceased DE3321813A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19833321813 DE3321813A1 (en) 1983-06-16 1983-06-16 Fuel injection system for a multi-cylinder internal combustion engine with an atomising nozzle composed of mixture and liquid nozzle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19833321813 DE3321813A1 (en) 1983-06-16 1983-06-16 Fuel injection system for a multi-cylinder internal combustion engine with an atomising nozzle composed of mixture and liquid nozzle

Publications (1)

Publication Number Publication Date
DE3321813A1 true DE3321813A1 (en) 1984-10-11

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Family Applications (1)

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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2604219A1 (en) * 1986-09-23 1988-03-25 Orbital Eng Pty FUEL INJECTION METHOD AND DEVICE FOR INTERNAL COMBUSTION ENGINES.
FR2622250A1 (en) * 1987-10-26 1989-04-28 Outboard Marine Corp Internal combustion engine with a compressed air collecting network
FR2627810A1 (en) * 1988-02-24 1989-09-01 Outboard Marine Corp FUEL SUPPLY DEVICE FOR INTERNAL COMBUSTION ENGINE
BE1002564A3 (en) * 1987-10-26 1991-03-26 Outboard Marine Corp INTERNAL COMBUSTION ENGINE WITH COMPRESSED AIR COLLECTOR NETWORK.
FR2662213A1 (en) * 1990-05-21 1991-11-22 Inst Francais Du Petrole Method for pneumatic fuel injection into a two-stroke engine, and corresponding two-stroke engine
EP0458670A1 (en) * 1990-05-21 1991-11-27 Institut Français du Pétrole Method of pneumatic fuel injection in a two-stroke engine and such a two-stroke engine
WO1995024553A1 (en) * 1994-03-09 1995-09-14 Ford Motor Company Limited Compressed gas supply
WO1997008455A1 (en) * 1995-08-26 1997-03-06 Ford Motor Company Limited Mixture preparation in a spark ignited engine
FR2740836A1 (en) * 1995-11-02 1997-05-09 Chatelain Michel Francois Cons Fuel injection device for injecting fuel into combustion chamber of heat engine, turbine or boiler
JP2015532961A (en) * 2012-09-25 2015-11-16 エンジネティクス エルエルシーＥｎｇｉｎｅｔｉｃｓ， Ｌｌｃ In-cylinder air supply system and method for fuel supply system

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2604219A1 (en) * 1986-09-23 1988-03-25 Orbital Eng Pty FUEL INJECTION METHOD AND DEVICE FOR INTERNAL COMBUSTION ENGINES.
BE1001486A3 (en) * 1986-09-23 1989-11-14 Orbital Eng Pty Method and device fuel injection engine internal.
BE1002564A3 (en) * 1987-10-26 1991-03-26 Outboard Marine Corp INTERNAL COMBUSTION ENGINE WITH COMPRESSED AIR COLLECTOR NETWORK.
FR2622250A1 (en) * 1987-10-26 1989-04-28 Outboard Marine Corp Internal combustion engine with a compressed air collecting network
BE1002767A5 (en) * 1988-02-24 1991-06-04 Outboard Marine Corp FUEL SUPPLY DEVICE FOR INTERNAL COMBUSTION ENGINE.
FR2633669A1 (en) * 1988-02-24 1990-01-05 Outboard Marine Corp FUEL SUPPLY DEVICE FOR INTERNAL COMBUSTION ENGINE
FR2627810A1 (en) * 1988-02-24 1989-09-01 Outboard Marine Corp FUEL SUPPLY DEVICE FOR INTERNAL COMBUSTION ENGINE
FR2662213A1 (en) * 1990-05-21 1991-11-22 Inst Francais Du Petrole Method for pneumatic fuel injection into a two-stroke engine, and corresponding two-stroke engine
EP0458670A1 (en) * 1990-05-21 1991-11-27 Institut Français du Pétrole Method of pneumatic fuel injection in a two-stroke engine and such a two-stroke engine
FR2668546A2 (en) * 1990-05-21 1992-04-30 Inst Francais Du Petrole Two-stroke engine provided with a pneumatic device for injecting carburetted mixture
WO1995024553A1 (en) * 1994-03-09 1995-09-14 Ford Motor Company Limited Compressed gas supply
WO1997008455A1 (en) * 1995-08-26 1997-03-06 Ford Motor Company Limited Mixture preparation in a spark ignited engine
FR2740836A1 (en) * 1995-11-02 1997-05-09 Chatelain Michel Francois Cons Fuel injection device for injecting fuel into combustion chamber of heat engine, turbine or boiler
JP2015532961A (en) * 2012-09-25 2015-11-16 エンジネティクス エルエルシーＥｎｇｉｎｅｔｉｃｓ， Ｌｌｃ In-cylinder air supply system and method for fuel supply system
EP2900954A4 (en) * 2012-09-25 2016-07-13 Enginetics Llc In-cylinder charging system for fuel delivery systems and methods

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OAV Applicant agreed to the publication of the unexamined application as to paragraph 31 lit. 2 z1
OP8 Request for examination as to paragraph 44 patent law
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