EP0180576A1 - Method for the direct injection of fuel into the combustion chamber in the cylinder head of a diesel engine and device for implementing such method - Google Patents

Method for the direct injection of fuel into the combustion chamber in the cylinder head of a diesel engine and device for implementing such method

Info

Publication number
EP0180576A1
EP0180576A1 EP84901572A EP84901572A EP0180576A1 EP 0180576 A1 EP0180576 A1 EP 0180576A1 EP 84901572 A EP84901572 A EP 84901572A EP 84901572 A EP84901572 A EP 84901572A EP 0180576 A1 EP0180576 A1 EP 0180576A1
Authority
EP
European Patent Office
Prior art keywords
fuel
combustion chamber
cylinder head
direct injection
diesel 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.)
Ceased
Application number
EP84901572A
Other languages
German (de)
French (fr)
Inventor
Willy Mahler
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0180576A1 publication Critical patent/EP0180576A1/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
    • F02M57/00—Fuel-injectors combined or associated with other devices
    • F02M57/04—Fuel-injectors combined or associated with other devices the devices being combustion-air intake or exhaust valves
    • 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
    • F02B2275/00—Other engines, components or details, not provided for in other groups of this subclass
    • F02B2275/14—Direct injection into combustion chamber
    • 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
    • F02B3/00—Engines characterised by air compression and subsequent fuel addition
    • F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition
    • 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 present invention relates to a method for injecting fuel directly into the combustion chamber in the cylinder head for a diesel engine, and to a device for carrying out the method.
  • the fuel valve is designed partly as an open, partly as a closed nozzle which is closed off by a needle against the combustion chamber in order to prevent dripping.
  • the injection nozzle and the inlet valve are manufactured separately and are also installed individually and separately from one another. Since the valves are usually mounted perpendicular to the cylinder, the injection nozzle between the intake and exhaust valve had to be installed. It is also known that the combustion chamber in the therefore had to be specially designed to ensure ideal atomization of the fuel. It is known, for example, that a solution could be found in forming the piston crown in the shape of a heart or pan in order to impart a swirl to the air in the combustion chamber with air guiding elements, which improves the atomization of the fuel.
  • the inlet valve and the atomizing nozzle have different functions. ⁇ while the valves for inlet and outlet of the fuel-air mixture, respectively. of the combustion exhaust gases, the atomizing nozzle enables the fuel to be introduced and atomized into the combustion chamber. The more ideally the fuel is atomized in the combustion chamber, the better the combustion.
  • the present invention relates to a method for directly injecting fuel into the combustion chamber in the cylinder head for a diesel engine, and to a device for carrying out the method in which the injection nozzle is mounted in such a way that the atomization of the fuel for direct injection is in the middle of the combustion chamber takes place in the cylinder head, the atomizing nozzle being incorporated in the inlet valve in such a way that it forms a single unit.
  • the purpose of the present invention is to create a single workpiece by means of a new combination of inlet valve and injection nozzle, which enables central assembly above the combustion chamber, as a result of which the fuel is atomized in the middle of the combustion chamber of the cylinder head .
  • the drawing shows a longitudinal section of an inlet valve combined with an injection nozzle in the closed state and is drawn on an enlarged scale
  • the inlet valve with the valve disk 2 is represented by 1.
  • In the inlet valve body 1 is both a bore for the fuel supply 3, "as well as such for the emergence of the nozzle needle taking available k.
  • the nozzle needle is bordered in its upper region to the compression spring 5» which by means of a screw 6 according to need more or less Can be adjusted through the inlet opening 7 - -
  • the injection nozzle is 8 and the so-called cap with the injection holes is 9.
  • the nozzle needle 4 closes the nozzle opening.
  • the function of the nozzle needle 4 is analogous to the previously known designs.
  • the intake valve 1 is confirmed via a rocker arm or via a camshaft and spring, which are not shown here.
  • the inlet valve 1 combined with the injection nozzle 8 form a single unit.
  • the fuel injection also takes place in the vertical direction in such a way that the fuel for direct injection is atomized in the middle of the combustion chamber, which can be referred to as ideal atomization.
  • the main advantages compared to conventional designs are that the injection nozzle in the inlet valve is cooled with the external air drawn in. Additional cooling fins or water channels for cooling the injection nozzle are unnecessary, which can be described as a major advance. With regard to the fuel supply, it must be mentioned that more than a single supply line can also be installed.
  • the present invention represents a real technical advance and is an enrichment in the construction of diesel engines with direct injection.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)

Abstract

La soupape d'admission (1) ainsi que la buse d'injection (8) pour moteur Diesel sont combinées l'une et l'autre afin de former une seule unité. La vaporisation du combustible pour l'injection directe a lieu au milieu de l'espace de combustion dans la tête de cylindre.The intake valve (1) as well as the injection nozzle (8) for diesel engine are combined with each other to form a single unit. The vaporization of the fuel for direct injection takes place in the middle of the combustion space in the cylinder head.

Description

Verfahren zum Direkteinspritzen von Brennstoff in die Brennkammer im Zylinderkopf für Diesel¬ motor, sowie eine Vorrichtung zur Durchführung des Verfahrens. Process for direct injection of fuel into the combustion chamber in the cylinder head for a diesel engine, and a device for carrying out the process.
Vorliegende Erfindung betrifft ein Verfahren zum Direkt¬ einspritzen von Brennstoff in die Brennkammer im Zylinder¬ kopf für Dieselmotor, sowie eine Vorrichtung zur Durchfüh¬ rung des Verfahrens.The present invention relates to a method for injecting fuel directly into the combustion chamber in the cylinder head for a diesel engine, and to a device for carrying out the method.
Gemäss dem allgemeinen Stand der ^echnik wird das Brenn¬ stoffventil teils als offene, teils als geschlossene, durch eine Nadel gegen den Verbrennungsraum hin abgeschlossene Düse ausgeführt, um ein Nachtropfen zu verhindern. Die Ein¬ spritzdüse sowie das Einlassventil werden separat angefer- tigt und sie werden auch einzeln und getrennt voneinander montiert. Da die Ventile meist senkrecht zum Zylinder mon¬ tiert werden, so musste gezwungenermassen die Einspritz¬ düse zwischen Einlass- und Auslassventil angebracht werden. Es ist auch bekannt, dass der Verbrennungsraum im daher besonders ausgestaltet werden musste, um eine ideale Zerstäubung des Brennstoffes zu gewährleisten. So ist es bekannt, dass eine Lösung darin gefunden werden konnte, den Kolbenboden herz- oder pfannenförmig auszubilden, um der Luft im Verbrennungsraum mit Luftführungselementen einen Drall zu erteilen, was die Zerstäubung des Brennstoffes verbessert.According to the general state of the art, the fuel valve is designed partly as an open, partly as a closed nozzle which is closed off by a needle against the combustion chamber in order to prevent dripping. The injection nozzle and the inlet valve are manufactured separately and are also installed individually and separately from one another. Since the valves are usually mounted perpendicular to the cylinder, the injection nozzle between the intake and exhaust valve had to be installed. It is also known that the combustion chamber in the therefore had to be specially designed to ensure ideal atomization of the fuel. It is known, for example, that a solution could be found in forming the piston crown in the shape of a heart or pan in order to impart a swirl to the air in the combustion chamber with air guiding elements, which improves the atomization of the fuel.
Das Einlassventil sowie die Zerstäubungsdüse haben dif¬ ferenzierte Funktionen. ¥ährend die Ventile für Ein- und Auslass des Brennstoff-Luftgemisches, resp. der Verbren¬ nungsabgase sorgen, so ermöglicht die Zerstäubungsdüse das Einlassen und Zerstäuben des Brennstoffes in den Verbren¬ nungsraum. Je idealer die Zerstäubung des Brennstoffes in der Verbrennungskammer erfolgt, umso besser ist auch die Verbrennung.The inlet valve and the atomizing nozzle have different functions. ¥ while the valves for inlet and outlet of the fuel-air mixture, respectively. of the combustion exhaust gases, the atomizing nozzle enables the fuel to be introduced and atomized into the combustion chamber. The more ideally the fuel is atomized in the combustion chamber, the better the combustion.
TJeberraschenderweise hat es sich gezeigt, dass wenn das Einlassventil mit der Einspritzdüse als kombinierte Ein¬ heit verwendet wird, dass dann in der Brennkammer des Zy- linderkpfes eine optimale Zerstäubung des Brennstoffes, sowie auch eine optimale Verbrennung ermöglicht wird, da dadurch die Möglichkeit gegeben ist, die Zerstäubungsdüse zentral und vertikal zur Verbrennungskammer einzubauen, sodass die Zerstäubung des Brennstoffes in der Mitte des Verbrennungsraumes erfolgt. Vorliegende Erfindung betrifft ein Verfahren zum Direkt einspritzen von Brennstoff in die Brennkammer im Zylinder¬ kopf für Dieselmotor, sowie eine Vorrichtung zur Durchfüh¬ rung des Verfahrens indem die Einspritzdüse derart ange- bracht ist, dass die Zerstäubung des Brennstoffes für Di¬ rekteinspritzung in der Mitte des Verbrennungsraumes im Zy¬ linderkopf erfolgt, wobei die Zerstäubungsdüse im Einlass¬ ventil derart inkorporiert ist, dass sie eine einzige Ein¬ heit bilden.Surprisingly, it has been found that if the inlet valve with the injection nozzle is used as a combined unit, then in the combustion chamber of the cylinder head an optimal atomization of the fuel and also an optimal combustion are made possible, since this gives the possibility to install the atomizing nozzle centrally and vertically to the combustion chamber so that the atomization of the fuel takes place in the middle of the combustion chamber. The present invention relates to a method for directly injecting fuel into the combustion chamber in the cylinder head for a diesel engine, and to a device for carrying out the method in which the injection nozzle is mounted in such a way that the atomization of the fuel for direct injection is in the middle of the combustion chamber takes place in the cylinder head, the atomizing nozzle being incorporated in the inlet valve in such a way that it forms a single unit.
Der Zweck der vorliegenden Erfindung ist darin zu er¬ blicken, durch eine neue Kombination von Einlassventil und Einspritzdüse ein einziges Werkstück zu kreieren, was eine zentrale Montage über der Brennkammer ermöglicht, wodurch die Zerstäubung des Brennstoffes in der Mitte des Verbren- nungsraumes des Zylinderkopfes erfolgt.The purpose of the present invention is to create a single workpiece by means of a new combination of inlet valve and injection nozzle, which enables central assembly above the combustion chamber, as a result of which the fuel is atomized in the middle of the combustion chamber of the cylinder head .
Zum besseren Verständnis der Erfindung wird diese an¬ hand einer Zeichnung näher erläutert.For a better understanding of the invention, this will be explained in more detail with reference to a drawing.
Die Zeichnung zeigt einen Längsschnitt eines Einlass¬ ventils kombiniert mit einer Einspritzdüse im geschlossenen Zustand und ist im vergrösserten Massstab gezeichneteThe drawing shows a longitudinal section of an inlet valve combined with an injection nozzle in the closed state and is drawn on an enlarged scale
Mit 1 ist das Einlassventil mit dem Ventilteller 2 dar¬ gestellt. Im Einlassventilkörper 1 ist sowohl eine Bohrung für die Brennstoffzufuhr 3, "wie auch eine solche zur Auf¬ nahme der Düsennadel k vorhanden. Die Düsennadel grenzt in ihrem oberen Bereich an die Druckfeder 5» die mittelst einer Schraube 6 je nach Notwendigkeit stärker oder weniger stark eingestellt werden kann. Durch die Einlassöffnung 7 - -The inlet valve with the valve disk 2 is represented by 1. In the inlet valve body 1 is both a bore for the fuel supply 3, "as well as such for the emergence of the nozzle needle taking available k. The nozzle needle is bordered in its upper region to the compression spring 5» which by means of a screw 6 according to need more or less Can be adjusted through the inlet opening 7 - -
wird der Brennstoff eingeführt. Die Einspritzdüse ist mit 8 und die sog. Kappe mit den Einspritzlöchern ist mit 9 bezeichnet.the fuel is introduced. The injection nozzle is 8 and the so-called cap with the injection holes is 9.
Im Ruhezustand verschliesst die Düsennadel 4 die Düsen- Öffnung. Die Funktion der Düsennadel 4 ist analog der bis anhin bekannten Ausführungsarten. Die Bestätigung des Ein¬ lassventils 1 erfolgt über einen Kipphebel oder über eine Nockenwelle und Feder, die hier nicht eingezeichnet sind«,In the idle state, the nozzle needle 4 closes the nozzle opening. The function of the nozzle needle 4 is analogous to the previously known designs. The intake valve 1 is confirmed via a rocker arm or via a camshaft and spring, which are not shown here.
Das Einlassventil 1 kombiniert mit der Einspritzdüse 8 bilden eine einzige Einheit. Anbetracht dessen, dass das Einlassventil 1 vertikal zum Zylinderkopf montiert wird, so erfolgt auch die Brennstoffeinspritzung in vertikaler Richtung derart, dass die Zerstäubung des Brennstoffes für Direkteinspritzung in der Mitte des Verbrennungsraumes erfolgt, was als eine ideale Zerstäubung bezeichnet werden kann.The inlet valve 1 combined with the injection nozzle 8 form a single unit. In view of the fact that the intake valve 1 is mounted vertically to the cylinder head, the fuel injection also takes place in the vertical direction in such a way that the fuel for direct injection is atomized in the middle of the combustion chamber, which can be referred to as ideal atomization.
Als wesentliche Vorteile gegenüber den konventionellen Bauarten wird angeführt, dass die Einspritzdüse im Einlass¬ ventil mit der angezogenen Aussenluft gekühlt wird. Zusätz- liehe Kühlrippen oder Wasserkanäle zur Kühlung der Einspritz düse erübrigen sich, was als wesentlicher Fortschritt zu be¬ zeichnen ist. In bezug auf die BrennstoffZuführung muss er¬ wähnt werden, dass auch mehr als eine einzige Zuführungs¬ leitung eingebaut werden kann. Die vorliegende Erfindung be- deutet einen echten technischen Fortschritt und ist eine Be¬ reicherung im Dieselmotorenbau mit Direkteinspritzung„The main advantages compared to conventional designs are that the injection nozzle in the inlet valve is cooled with the external air drawn in. Additional cooling fins or water channels for cooling the injection nozzle are unnecessary, which can be described as a major advance. With regard to the fuel supply, it must be mentioned that more than a single supply line can also be installed. The present invention represents a real technical advance and is an enrichment in the construction of diesel engines with direct injection.
O PI O PI

Claims

P a t e n t a n s p r ü c h e Patent claims
1. Verfahren zum Direkteinspritzen von Brennstoff in die Brennkammer im Zylinderkopf mittelst Einspritzdüse, dadurch gekennzeichnet, dass die Einspritzdüse (8) derart angebracht ist, dass die Zerstäubung des Brennstoffes für Direkteinspritzung in der Mitte des Verbrennungsraumes des Zylinderkopfes erfolgt.1. A method for direct injection of fuel into the combustion chamber in the cylinder head by means of an injection nozzle, characterized in that the injection nozzle (8) is attached in such a way that the atomization of the fuel for direct injection takes place in the middle of the combustion chamber of the cylinder head.
2. Vorrichtung zur Durchführung des Verfahrens nach Patent¬ anspruch 1, bestehend aus einem Einlassventil und 2er- stäubungsdüse, dadurch gekennzeichnet, dass die Zerstäubungsdüse (8) im Einlassventil (l) derart inkorporiert ist, dass beide eine einzige Einheit bilden.2. Device for performing the method according to claim 1, consisting of an inlet valve and 2-atomizing nozzle, characterized in that the atomizing nozzle (8) is incorporated in the inlet valve (1) in such a way that both form a single unit.
3. Vorrichtung zur Durchführung des Verfahrens nach einem der beiden Ansprüche, dadurch gekennzeichnet, dass das Einlassventil (l) mindestens eine Brennstoff¬ zuleitung (3) mit mindestens einer Einspritzdüse (8) besitzt,,3. Device for carrying out the method according to one of the two claims, characterized in that the inlet valve (l) has at least one fuel feed line (3) with at least one injection nozzle (8).
:*i ' : * i '
EP84901572A 1984-04-25 1984-04-25 Method for the direct injection of fuel into the combustion chamber in the cylinder head of a diesel engine and device for implementing such method Ceased EP0180576A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CH1984/000062 WO1985004927A1 (en) 1984-04-25 1984-04-25 Method for the direct injection of fuel into the combustion chamber in the cylinder head of a diesel engine and device for implementing such method

Publications (1)

Publication Number Publication Date
EP0180576A1 true EP0180576A1 (en) 1986-05-14

Family

ID=4541130

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84901572A Ceased EP0180576A1 (en) 1984-04-25 1984-04-25 Method for the direct injection of fuel into the combustion chamber in the cylinder head of a diesel engine and device for implementing such method

Country Status (4)

Country Link
US (1) US4809655A (en)
EP (1) EP0180576A1 (en)
IT (1) IT1196145B (en)
WO (1) WO1985004927A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2341011A1 (en) 2009-12-29 2011-07-06 Johan Bauwens Package for at least one individual portion of a food composition

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5957106A (en) * 1997-10-29 1999-09-28 Caterpillar Inc. Engine having an intake/exhaust valve integrated with a fuel injector
US5934245A (en) * 1997-11-19 1999-08-10 Caterpillar Inc. Two cycle engine having a mono-valve integrated with a fuel injector
US6311668B1 (en) 2000-02-14 2001-11-06 Caterpillar Inc. Monovalve with integrated fuel injector and port control valve, and engine using same
US6443121B1 (en) 2000-06-29 2002-09-03 Caterpillar Inc. Hydraulically actuated gas exchange valve assembly and engine using same
US6474296B2 (en) 2000-12-19 2002-11-05 Caterpillar Inc. Lash adjustment for use with an actuator
KR100412596B1 (en) * 2001-07-12 2003-12-31 현대자동차주식회사 Intake valve having injector

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US1201533A (en) * 1913-08-15 1916-10-17 Frederick Wackenhuth Internal-combustion engine.
US2072437A (en) * 1933-01-06 1937-03-02 Allan R Wurtele Internal combustion engine
US2044522A (en) * 1933-08-23 1936-06-16 Allan R Wurtele Internal combustion engine
US2071719A (en) * 1934-05-09 1937-02-23 Allan R Wurtele Internal combustion engine
US2280386A (en) * 1941-04-09 1942-04-21 Gen Motors Corp Combined engine cylinder valve and fuel injector
GB735834A (en) * 1952-10-28 1955-08-31 Saurer Ag Adolph Improvements in cylinder heads for internal combustion engines
GB748589A (en) * 1954-05-14 1956-05-02 Ronald David Jones Improvements relating to fuel injection internal combustion engines
US3450121A (en) * 1967-02-13 1969-06-17 Hartford Machine Screw Co Internal-combustion engine and fuel injection system therefor
FR2050287A1 (en) * 1969-07-18 1971-04-02 Planche Camille
US3812829A (en) * 1972-08-18 1974-05-28 A Mccormick Fuel injection system and associated structure
DD129352A1 (en) * 1976-06-25 1978-01-11 Martin Behrens IN THE CYLINDER HEAD ATTACHED COMBUSTION SPACE
DE2809968A1 (en) * 1978-03-08 1979-09-20 Bosch Gmbh Robert PISTON COMBUSTION MACHINE WITH A CIRCULAR CYLINDER-SHAPED COMBUSTION CHAMBER
DE2913763C2 (en) * 1979-04-05 1983-12-01 Michael G. Dipl.-Ing. ETH 1180 Rolle May Reciprocating internal combustion engine

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Title
See references of WO8504927A1 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2341011A1 (en) 2009-12-29 2011-07-06 Johan Bauwens Package for at least one individual portion of a food composition

Also Published As

Publication number Publication date
US4809655A (en) 1989-03-07
IT1196145B (en) 1988-11-10
WO1985004927A1 (en) 1985-11-07
IT8421410A0 (en) 1984-06-14

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