EP0379719A1 - Rocker arms arrangement in an internal-combustion engine - Google Patents

Rocker arms arrangement in an internal-combustion engine Download PDF

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Publication number
EP0379719A1
EP0379719A1 EP89123764A EP89123764A EP0379719A1 EP 0379719 A1 EP0379719 A1 EP 0379719A1 EP 89123764 A EP89123764 A EP 89123764A EP 89123764 A EP89123764 A EP 89123764A EP 0379719 A1 EP0379719 A1 EP 0379719A1
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EP
European Patent Office
Prior art keywords
cylinder
rocker arm
cylinder head
diesel engine
cover plate
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.)
Granted
Application number
EP89123764A
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German (de)
French (fr)
Other versions
EP0379719B1 (en
Inventor
Toni Kleinschmidt
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.)
Kloeckner Humboldt Deutz AG
Original Assignee
Kloeckner Humboldt Deutz 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.)
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Publication date
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Publication of EP0379719A1 publication Critical patent/EP0379719A1/en
Application granted granted Critical
Publication of EP0379719B1 publication Critical patent/EP0379719B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/12—Transmitting gear between valve drive and valve
    • F01L1/18—Rocking arms or levers
    • F01L1/181—Centre pivot rocking arms
    • 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
    • F02B75/00—Other engines
    • F02B75/02—Engines characterised by their cycles, e.g. six-stroke
    • F02B2075/022—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle
    • F02B2075/027—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle four
    • 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

Definitions

  • the invention relates to a four-stroke internal combustion engine according to the preamble of claim 1.
  • the injection valves can only be accommodated on the cylinder head side opposite the channels.
  • the camshaft is usually accommodated with bumpers, rocker arms and rocker arm brackets for actuating the gas exchange valves on the side of the injection valves. Since the tilting jack brackets are arranged in the area of the cylinder center, space problems arise when accommodating the injection valves, particularly if the injection valves are to be installed relatively steeply and in the cylinder center and at the same time are to remain outside the valve cover.
  • the object of the invention is to implement an injection valve with a steep and central installation position in a four-stroke internal combustion engine of the arrangement described above.
  • the arrangement according to the invention offers the advantage of ensuring the required space for the injection valves and still obtaining the simple solution with a rocker arm bracket for two rocker arms.
  • rocker arm brackets are usually attached to the cylinder head with two screws. However, it can also be advantageous to use only one screw, advantageously a cylinder head screw, for fastening a rocker arm bracket.
  • the injectors can be housed under the valve cover.
  • the arrangement according to the invention of the injection valves according to claim 3 has the advantage that they are accessible without dismantling the valve cover and in the event of a break in the injection line, no lubrication oil thinning occurs. In addition, it is not necessary to pass the injection line through the valve cover.
  • FIG. 1 The arrangement according to the invention according to FIG. 1 consists of several cylinders 1 arranged in series, onto which a cylinder head 2, which is designed as a block head, is fastened with cylinder head screws 3.
  • the rocker arm brackets 7 are combined for two adjacent gas exchange valves of adjacent cylinders.
  • the rocker arm brackets 7 are fastened to the block head with two fastening screws 8 in the middle between two adjacent cylinders 1. They carry the rocker arms 4 on the shaft ends 9, which are axially fixed with retaining rings 16.
  • a separate rocker arm bracket is arranged for the outer valve.
  • the rocker arm bracket is designed as a round pin 10. Since the round bolt 10 can be made from rod material, a particularly simple solution results. As can be seen in Figure 3, the round bolt 10 lies with a flat 13 on the cover plate 6 of the cylinder head 2 and is screwed on with two fastening screws 8. In the solution according to FIGS. 2 and 3, the cover plate 6 is pulled up to the level of the run bolt 10. It has slots 11 into which the side surfaces 14 of the round bolts 10 fit and serve to fix these round bolts in position.
  • the rocker arms in this version are axially fixed by the slots 11, since the width of the slots 11 corresponds to the width of the rocker arms 4 in the region of their bearings 12. In this case, circlips can be omitted, which further simplifies the arrangement.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)

Abstract

A four-stroke internal-combustion engine having a block head and two gas-changing valves per cylinder and injection valves, which are located on the side of the camshaft, located underneath, and are intended to be arranged as steeply and centrally as possible. According to the invention, the achievement of this object, which is exacerbated by the normal position of the rocker arm supports, is that the rocker arm supports (7) for the rocker arms (4) of each cylinder (1) are arranged outside the cylinder centre and in consequence the cylinder centre remains free for the desired accommodation of the injection valves. The invention is particularly suitable for directly-injecting diesel engines. <IMAGE>

Description

Die Erfindung betrifft eine Viertakt-Brennkraftmaschine nach dem Oberbegriff des Anspruchs 1.The invention relates to a four-stroke internal combustion engine according to the preamble of claim 1.

Bei Viertakt-Brennkraftmaschinen, bei denen die Ein­laß- und Auslaßkanäle auf einer Zylinderkopfseite angeord­net sind, können die Einspritzventile nur auf der den Kanälen gegenüberliegenden Zylinderkopfseite untergebracht werden. Üblicherweise wird bei solchen Viertakt-Brenn­kraftmaschinen die Nockenwelle mit Stoßstangen, Kipphebeln und Kipphebelböcken zur Betätigung der Gaswechselventile auf der Seite der Einspritzventile untergebracht. Da die Kipphelbelböcke im Bereich der Zylindermitte angeordnet sind, ergeben sich Platzprobleme bei der Unterbringung der Einspritzventile, insbesondere dann, wenn die Einspritz­ventile relativ steil und in Zylindermitte eingebaut wer­den sollen und zugleich außerhalb der Ventilhaube bleiben sollen.In four-stroke internal combustion engines in which the intake and exhaust ports are arranged on one cylinder head side, the injection valves can only be accommodated on the cylinder head side opposite the channels. In such four-stroke internal combustion engines, the camshaft is usually accommodated with bumpers, rocker arms and rocker arm brackets for actuating the gas exchange valves on the side of the injection valves. Since the tilting jack brackets are arranged in the area of the cylinder center, space problems arise when accommodating the injection valves, particularly if the injection valves are to be installed relatively steeply and in the cylinder center and at the same time are to remain outside the valve cover.

Der Erfindung liegt die Aufgabe zugrunde, bei einer Vier­takt-Brennkraftmaschine der oben beschriebenen Anordnung ein Einspritzventil mit steiler und zentraler Einbaulage zu realisieren.The object of the invention is to implement an injection valve with a steep and central installation position in a four-stroke internal combustion engine of the arrangement described above.

Diese Aufgabe wird durch den kennzeichnenden Teil des Anspruchs 1 gelöst. Durch die erfindungsgemäße Anordnung der Kipphebelböcke wird erreicht, daß in der Mitte eines jeden Zylinders im Zylinderkopf genügend Kaum zur steilen und zentralen Anordnung des jeweiligen Einspritzventils besteht.This object is solved by the characterizing part of claim 1. The arrangement of the rocker arm brackets according to the invention ensures that there is barely enough in the center of each cylinder in the cylinder head for the steep and central arrangement of the respective injection valve.

Bei Blockzylinderköpfen bietet die erfindungsgemäße Anord­nung den Vorteil, den erforderlichen Platz für die Ein­spritzventile sicherzustellen und trotzdem die einfache Lösung mit einem Kipphebelbock für zwei Kipphebel zu erhalten.In the case of block cylinder heads, the arrangement according to the invention offers the advantage of ensuring the required space for the injection valves and still obtaining the simple solution with a rocker arm bracket for two rocker arms.

Die Kipphebelböcke werden üblicherweise mit zwei Schrauben am Zylinderkopf befestigt. Es kann aber auch vorteilhaft sein, nur eine Schraube und zwar vorteilhafterweise eine Zylinderkopfschraube zur Befestigung eines Kipphebelbockes zu verwenden.The rocker arm brackets are usually attached to the cylinder head with two screws. However, it can also be advantageous to use only one screw, advantageously a cylinder head screw, for fastening a rocker arm bracket.

Die Einspritzventile können unter der Ventilhaube unterge­bracht sein. Demgegenüber bietet die erfindungsgemäße Anordnung der Einspritzventile nach Anspruch 3 den Vor­teil, daß diese ohne Demontage der Ventilhaube zugänglich sind und im Falle eines Bruches der Einspritzleitung keine Schmierölverdünnung eintritt. Außerdem ist keine Durch­führung der Einspritzleitung durch die Ventilhaube erfor­derlich.The injectors can be housed under the valve cover. In contrast, the arrangement according to the invention of the injection valves according to claim 3 has the advantage that they are accessible without dismantling the valve cover and in the event of a break in the injection line, no lubrication oil thinning occurs. In addition, it is not necessary to pass the injection line through the valve cover.

Die erfindungsgemäße Ausbildung des Kipphebelbockes als Rundbolzen stellt eine besonders einfache Lösung dar.The inventive design of the rocker arm bracket as a round pin represents a particularly simple solution.

Weitere Merkmale der Erfindung ergeben sich aus der fol­genden Beschreibung und der Zeichnung, in der Ausführungs­beispiele der Erfindung schematisch dargestellt sind.Further features of the invention result from the following description and the drawing, in which exemplary embodiments of the invention are shown schematically.

Es zeigen:

  • Figur 1: Eine Draufsicht auf den Zylinderkopf der Viertakt-Brennkraftmaschine
  • Figur 2: Eine Draufsicht auf den Zylinderkopf der Brennkraftmaschine mit Rundbolzen als Kipphebelböcke
  • Figur 3: Einen Schnitt durch den Rundbolzen
Show it:
  • Figure 1: A plan view of the cylinder head of the four-stroke internal combustion engine
  • Figure 2: A plan view of the cylinder head of the internal combustion engine with round bolts as rocker arms
  • Figure 3: A section through the round bolt

Die erfindungsgemäße Anordnung nach Figur 1 besteht aus mehreren, in Reihe angeordneten Zylindern 1, auf die ein Zylinderkopf 2, der als Blockkopf ausgebildet ist, mit Zylinderkopfschrauben 3 befestigt ist.The arrangement according to the invention according to FIG. 1 consists of several cylinders 1 arranged in series, onto which a cylinder head 2, which is designed as a block head, is fastened with cylinder head screws 3.

Die Kipphebelböcke 7 sind für je zwei benachbarte Gas­wechselventile benachbarter Zylinder zusammengefasst. Die Kipphebelböcke 7 sind mit je zwei Befestigungsschrauben 8 in der Mitte zwischen zwei benachbarten Zylindern 1 an dem Blockkopf befestigt. Sie tragen auf Wellenstummeln 9 die Kipphebel 4, die mit Sicherungsringen 16 axial fixiert sind.The rocker arm brackets 7 are combined for two adjacent gas exchange valves of adjacent cylinders. The rocker arm brackets 7 are fastened to the block head with two fastening screws 8 in the middle between two adjacent cylinders 1. They carry the rocker arms 4 on the shaft ends 9, which are axially fixed with retaining rings 16.

Bei den äußeren Zylindern einer Zylinderreihe ist für das jeweils äußere Ventil ein eigener Kipphebelbock angeordnet.In the outer cylinders of a row of cylinders, a separate rocker arm bracket is arranged for the outer valve.

Zwischen den freien Enden der Wellenstummel 9 ist hinrei­chend Platz, um die Einspritzventile in der angestrebten steilen und zentralen Lage im Zylinderkopf unterzubringen. Zugleich ist Raum für die Ventilhaube 15 mit der Ventil­haubendichtung 17, die im Bereich des Einspritzventils 18 U-förmig ausgebildet sind. Auf diese Weise ist eine unab­ hängige Montage von Einspritzdüse 18 und Ventilhaube 15 möglich. Außerdem ist eine Schmierölverdünnung durch un­dichte oder gebrochene Einspritzleitungen unmöglich gemacht.There is sufficient space between the free ends of the stub shaft 9 to accommodate the injectors in the desired steep and central position in the cylinder head. At the same time, there is space for the valve cover 15 with the valve cover seal 17, which are U-shaped in the area of the injection valve 18. In this way, an independent hanging assembly of injection nozzle 18 and valve cover 15 possible. In addition, dilution of the lubricating oil by leaking or broken injection lines is made impossible.

In der erfindungsgemäßen Ausführung nach Figur 2 ist der Kipphebelbock als Rundbolzen 10 ausgebildet. Da der Rund­bolzen 10 aus Stangenmaterial hergestellt werden kann, ergibt sich eine besonders einfache Lösung. Wie aus Bild 3 ersichtlich, liegt der Rundbolzen 10 mit einer Anflächung 13 auf der Deckplatte 6 des Zylinderkopfes 2 auf und wird mit zwei Befestigungsschrauben 8 angescnraubt. Die Deck­platte 6 ist bei der Lösung nach Figur 2 und 3 bis in Höhe des Runbolzens 10 hochgezogen. Sie besitzt Schlitze 11, in die die Seitenflächen 14 der Rundbolzen 10 passen und zur Lagefixierung dieser Rundbolzen dienen.In the embodiment according to FIG. 2, the rocker arm bracket is designed as a round pin 10. Since the round bolt 10 can be made from rod material, a particularly simple solution results. As can be seen in Figure 3, the round bolt 10 lies with a flat 13 on the cover plate 6 of the cylinder head 2 and is screwed on with two fastening screws 8. In the solution according to FIGS. 2 and 3, the cover plate 6 is pulled up to the level of the run bolt 10. It has slots 11 into which the side surfaces 14 of the round bolts 10 fit and serve to fix these round bolts in position.

Außerdem werden die Kipphebel bei dieser Version durch die Schlitze 11 axial fixiert, da die Breite der Schlitze 11 der Breite der Kipphebel 4 im Bereich von deren Lager 12 entspricht. Dadurch können in diesem Falle Sicherungsringe entfallen, was zur weiteren Vereinfachung der Anordnung beiträgt.In addition, the rocker arms in this version are axially fixed by the slots 11, since the width of the slots 11 corresponds to the width of the rocker arms 4 in the region of their bearings 12. In this case, circlips can be omitted, which further simplifies the arrangement.

Claims (6)

1. Dieselmotor mit:
- einem Kurbelgehäuse mit mindestens einem Zylinder (1),
- einer Nockenwelle,
- einem Zylinderkopf (2) mit einer Deckplatte (6);
- zwei Gaswechselventilen pro Zylinder, die parallel zur Zylinderachse angeordnet sind, von Kipphebeln (4) betätigt werden und von einer Ventilhaube (15) abdeckbar sind;
- mit Kipphebelböcken (7), die auf der Deckplatte (6) befestigt sind sowie Wellenstummeln (9) zur Lagerung der Kipphebel (4);
- mit einem Einspritzventil (18), das aus der Zylindermitte zur Nockenwellenseite hin versetzt zwischen den Gaswechselventilen angeordnet ist,
dadurch gekennzeichnet, daß der Dieselmotor
- mehrere Zylinder (1),
- eine im Kurbelgehäuse gelagerte Nockenwelle
- und einen als Blockkopf ausgeführten Zylinder­kopf (2) aufweist,
- und daß für benachbarte Kipphebel (4) benachbarter Zylinder (1) jeweils ein gemeinsamer Kipphebelbock (7) vorgesehen ist, der im Bereich zwischen benachbarten Zylindern (1) auf dem Zylinderkopf (2) befestigt ist.1. Diesel engine with:
- a crankcase with at least one cylinder (1),
- a camshaft,
- A cylinder head (2) with a cover plate (6);
- Two gas exchange valves per cylinder, which are arranged parallel to the cylinder axis, are operated by rocker arms (4) and can be covered by a valve cover (15);
- With rocker arm brackets (7), which are attached to the cover plate (6) and shaft ends (9) for mounting the rocker arms (4);
with an injection valve (18) which is arranged offset from the center of the cylinder to the camshaft side between the gas exchange valves,
characterized in that the diesel engine
- several cylinders (1),
- A camshaft mounted in the crankcase
- and has a cylinder head (2) designed as a block head,
- And that for adjacent rocker arms (4) Adjacent cylinders (1) are each provided with a common rocker arm bracket (7) which is fastened on the cylinder head (2) in the area between adjacent cylinders (1). 2. Dieselmotor nach Anspruch 1 ,
dadurch gekennzeichnet, daß im Zylinderkopf (2) im Bereich zwischen den Kipphebelböcken (7) eines jeden Zylinders kaum zum Anordnen eines Einspritzventils vorgesehen ist.2. Diesel engine according to claim 1,
characterized in that in the cylinder head (2) in the area between the rocker arm brackets (7) of each cylinder there is hardly any provision for an injection valve. 3. Dieselmotor nach Anspruch 2,
dadurch gekennzeichnet, daß das Einspritzventil außerhalb der Ventilhaube in einer U-förmigen Ausnehmung derselben angeordnet ist.3. Diesel engine according to claim 2,
characterized in that the injection valve is arranged outside the valve cover in a U-shaped recess thereof. 4. Dieselmotor nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der Kipphebelbock (7) als ein Rundbolzen (10) vorzugsweise mit dem Durchmesser der Wel­lenstummel (9) ausgeführt ist.4. Diesel engine according to one of the preceding claims, characterized in that the rocker arm bracket (7) is designed as a round pin (10) preferably with the diameter of the shaft stub (9). 5. Dieselmotor nach Anspruch 4,
dadurch gekennzeichnet, daß der Rundbolzen in einer pas­senden halbrundförmigen Ausfräsung in der auf das Niveau des Rundbolzens (10) hochgezogenen Deckplatte (6) des Zylinderkopfes (2) gelagert ist, wobei zu beiden Seiten der halbrundförmigen Aussparung in der Deckplatte (6) des Zylinderkopfes (2) Schlitze (11) senkrecht zur Achse des Rundbolzens (10) vorgesehen sind, die die Breite des Kipp­hebels (7) im Bereich des Kipphebellagers (12) und minde­stens die zum Freigang der Kipphebel (4) notwendige Tiefe besitzen.5. Diesel engine according to claim 4,
characterized in that the round bolt is mounted in a suitable semicircular cutout in the cover plate (6) of the cylinder head (2) raised to the level of the round bolt (10), with the semicircular recess in the cover plate (6) of the cylinder head (2) on both sides 2) slots (11) are provided perpendicular to the axis of the round pin (10), which have the width of the rocker arm (7) in the area of the rocker arm bearing (12) and at least the depth necessary for the rocker arms (4) to be free. 6. Dieselmotor nach den Ansprüchen 4 und 5,
dadurch gekennzeichnet, daß an dem Rundbolzen (10) zwi­schen den Wellenstummeln (9) eine Anflächung (13) mit Seitenflächen (14) vorgesehen ist, wobei der Rundbolzen (10) mit der Anflächung (13) auf einer ebenen Fläche der Deckplatte (6) des Zylinderkopfes (2) aufliegt und mit den Seitenflächen (14) in den Schlitzen (11) geführt ist.6. Diesel engine according to claims 4 and 5,
characterized in that a flattening (13) with side surfaces (14) is provided on the round bolt (10) between the shaft ends (9), the round bolt (10) with the flattening (13) on a flat surface of the cover plate (6) of the cylinder head (2) rests and is guided with the side surfaces (14) in the slots (11).
EP89123764A 1988-12-27 1989-12-22 Rocker arms arrangement in an internal-combustion engine Expired - Lifetime EP0379719B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3843983A DE3843983A1 (en) 1988-12-27 1988-12-27 FOUR-STOCK COMBUSTION ENGINE
DE3843983 1988-12-27

Publications (2)

Publication Number Publication Date
EP0379719A1 true EP0379719A1 (en) 1990-08-01
EP0379719B1 EP0379719B1 (en) 1993-04-07

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP89123764A Expired - Lifetime EP0379719B1 (en) 1988-12-27 1989-12-22 Rocker arms arrangement in an internal-combustion engine

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EP (1) EP0379719B1 (en)
DE (2) DE3843983A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7268466B2 (en) 2002-01-10 2007-09-11 Steen Brabrand Rasmussen Piezo electric pump and device with such pump
WO2020227741A1 (en) * 2019-05-10 2020-11-19 Innio Jenbacher Gmbh & Co Og Internal combustion engine

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0872630B1 (en) 1997-04-18 2001-06-20 Volkswagen Aktiengesellschaft Bearing for a finger arm of a valve operating device of an internal combustion engine
DE19833531A1 (en) * 1998-07-25 2000-01-27 Audi Ag Cylinder head for stroke piston internal combustion engine involves at least two cylinders in row, each cylinder having at least one inlet and outlet channel evolving from combustion

Citations (2)

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Publication number Priority date Publication date Assignee Title
GB532275A (en) * 1939-08-24 1941-01-21 Percy Garibaldi Hugh Improvements in and relating to the cylinder heads of internal combustion engines and the arrangement and operation of the valves therein
EP0213787A1 (en) * 1985-08-08 1987-03-11 Honda Giken Kogyo Kabushiki Kaisha Overhead cam type four-valve actuating apparatus

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DE1936752U (en) * 1964-04-09 1966-04-14 Kloeckner Humboldt Deutz Ag STORAGE OF THE ROCKER ARMS FOR THE VALVE OPERATION OF COMBUSTION ENGINE.
DD113790A1 (en) * 1974-08-09 1975-06-20
IT1024700B (en) * 1974-10-28 1978-07-20 Fiat Spa IMPROVEMENTS IN THE CYLINDER HEAD FOR INTERNAL COMBUSTION ENGINES OF THE DIESEL CYCLE TYPE
DE2809157A1 (en) * 1978-03-03 1979-09-06 Daimler Benz Ag CYLINDER HEAD FOR A MIXED COMPRESSING COMBUSTION MACHINE
JPS62159762A (en) * 1986-01-08 1987-07-15 Honda Motor Co Ltd Diesel engine
DE3601702A1 (en) * 1986-01-22 1987-07-23 Kloeckner Humboldt Deutz Ag Cylinder head for an internal combustion engine

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB532275A (en) * 1939-08-24 1941-01-21 Percy Garibaldi Hugh Improvements in and relating to the cylinder heads of internal combustion engines and the arrangement and operation of the valves therein
EP0213787A1 (en) * 1985-08-08 1987-03-11 Honda Giken Kogyo Kabushiki Kaisha Overhead cam type four-valve actuating apparatus

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 7, no. 5 (M-184)(1150) 11 Januar 1983, & JP-A-57 165612 (NISSAN) 12 Oktober 1982, *
PATENT ABSTRACTS OF JAPAN vol. 8, no. 61 (M-284)(1498) 23 März 1984, & JP-A-58 211514 (NISSAN) 9 Dezember 1983, *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7268466B2 (en) 2002-01-10 2007-09-11 Steen Brabrand Rasmussen Piezo electric pump and device with such pump
WO2020227741A1 (en) * 2019-05-10 2020-11-19 Innio Jenbacher Gmbh & Co Og Internal combustion engine

Also Published As

Publication number Publication date
DE3843983A1 (en) 1990-06-28
EP0379719B1 (en) 1993-04-07
DE58904023D1 (en) 1993-05-13

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