EP1319810B1 - Combustion engine with piston cooling and valve drive lubrication - Google Patents

Combustion engine with piston cooling and valve drive lubrication Download PDF

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Publication number
EP1319810B1
EP1319810B1 EP20020027805 EP02027805A EP1319810B1 EP 1319810 B1 EP1319810 B1 EP 1319810B1 EP 20020027805 EP20020027805 EP 20020027805 EP 02027805 A EP02027805 A EP 02027805A EP 1319810 B1 EP1319810 B1 EP 1319810B1
Authority
EP
European Patent Office
Prior art keywords
oil
lubricating
bores
nozzles
oil spray
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 - Lifetime
Application number
EP20020027805
Other languages
German (de)
French (fr)
Other versions
EP1319810A1 (en
Inventor
Heribert Möller
Jens Türk
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.)
MAN Truck and Bus SE
Original Assignee
MAN Nutzfahrzeuge 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 MAN Nutzfahrzeuge AG filed Critical MAN Nutzfahrzeuge AG
Publication of EP1319810A1 publication Critical patent/EP1319810A1/en
Application granted granted Critical
Publication of EP1319810B1 publication Critical patent/EP1319810B1/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
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M9/00—Lubrication means having pertinent characteristics not provided for in, or of interest apart from, groups F01M1/00 - F01M7/00
    • F01M9/10—Lubrication of valve gear or auxiliaries
    • F01M9/104—Lubrication of valve gear or auxiliaries of tappets
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M1/00—Pressure lubrication
    • F01M1/08—Lubricating systems characterised by the provision therein of lubricant jetting means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M11/00—Component parts, details or accessories, not provided for in, or of interest apart from, groups F01M1/00 - F01M9/00
    • F01M11/02—Arrangements of lubricant conduits

Definitions

  • the invention relates to an internal combustion engine according to the preamble of claim 1.
  • oil spray nozzles For the cooling of piston crowns it is customary to provide oil spray nozzles.
  • the oil spray nozzles are positioned on the inside of a crankcase and supplied with lubricating oil via an oil passage penetrating the crankcase axially parallel to the crankshaft, see for example US 5 503 116 A.
  • This oil passage also supplies the lubricating nozzles for the lubrication of the valve lifters.
  • the oil spray nozzles and the lubrication nozzles are arranged in separate bores which of course requires a large number of bores. In order to ensure proper cooling of the piston crowns an exact positioning of the oil spray nozzles is essential, which causes difficulties during installation. Furthermore, the plurality of holes for the oil spray nozzles and the lubricating nozzles is a high production cost.
  • the invention has for its object to keep the production costs for the attachment of the oil spray nozzles and the lubricating nozzles as low as possible and to affect this without the functionality of these parts.
  • a further advantageous embodiment can be taken from claim 3.
  • the oil spray nozzles used in the first holes are kept both oil-tight and secured against rotation by means of a tab and only one screw.
  • Figure 1 shows as an example a cross section through a V-engine. Shown is a cylinder bank 1.
  • the valve train consists of a roller tappet 2 with camshaft 3.
  • the push rod is not shown here.
  • an oil spray nozzle 4 For cooling a piston, an oil spray nozzle 4 is provided, which is directed against the piston crown.
  • the oil spray nozzle 4 and the lubricating nozzle 5 are introduced into concentric bores 7, 8, which start from the interior of the crankcase and penetrate the oil passage 6 and terminate in a tappet guide 9.
  • the oil spray nozzle 4 is installed in a outgoing from the crankcase and opening out into the oil passage 6 first bore 7, the lubricating nozzle 5 in a outgoing from the oil passage 6 and opening in the tappet guide 9 second bore 8.
  • the lubricating nozzle 5 is used with its peripheral jacket of the leadership of the roller tappet 2, which has for this purpose on its tappet jacket 10 has a longitudinal groove 11 in which the circumferential casing of the lubricating nozzle 5 slides and protects the roller tappet 2 against rotation.
  • the lubricating nozzle 5 can be screwed or pressed into the second bore 8.
  • the lubricating nozzle 5 supplies the roller tappet 2 with lubricating oil via a bore 14.
  • the oil nozzle 4 is connected to its attachment and simultaneous positioning with a tab 12.
  • the tab 12 in turn is fastened to the crankcase by means of a screw 13 (FIG. 2).
  • the tab 12 represents a rotation of the oil spray nozzle 4.
  • crankcase 2 an interior view of the crankcase is shown.
  • the oil spray nozzle 4 is fixed by means of the screw 13 and tab 12 on the crankcase and secured against rotation.
  • the prefabricated unit of oil spray nozzle 4 and tab 12 can be positioned without major installation effort.

Description

Die Erfindung bezieht sich auf eine Brennkraftmaschine gemäß dem Gattungsbegriff des Patentanspruches 1.The invention relates to an internal combustion engine according to the preamble of claim 1.

Für die Kühlung von Kolbenböden ist es üblich Ölspritzdüsen vorzusehen. Die Ölspritzdüsen werden positioniert auf der Innenseite eines Kurbelgehäuses befestigt und über einen das Kurbelgehäuse achsparallel zur Kurbelwelle durchdringenden Ölkanal mit Schmieröl versorgt, siehe zum Beispiel US 5 503 116 A. Über diesen Ölkanal werden auch die Schmierdüsen für die Schmierung der Ventilstößel versorgt. Die Ölspritzdüsen und die Schmierdüsen sind in getrennten Bohrungen angeordnet was natürlich eine Vielzahl an Bohrungen erforderlich macht. Um eine einwandfreie Kühlung der Kolbenböden sicherzustellen ist eine exakte Positionierung der Ölspritzdüsen unabdingbar, was bei der Montage Schwierigkeiten bereitet. Ferner stellt die Vielzahl von Bohrungen für die Ölspritzdüsen und die Schmierdüsen einen hohen Fertigungsaufwand dar.For the cooling of piston crowns it is customary to provide oil spray nozzles. The oil spray nozzles are positioned on the inside of a crankcase and supplied with lubricating oil via an oil passage penetrating the crankcase axially parallel to the crankshaft, see for example US 5 503 116 A. This oil passage also supplies the lubricating nozzles for the lubrication of the valve lifters. The oil spray nozzles and the lubrication nozzles are arranged in separate bores which of course requires a large number of bores. In order to ensure proper cooling of the piston crowns an exact positioning of the oil spray nozzles is essential, which causes difficulties during installation. Furthermore, the plurality of holes for the oil spray nozzles and the lubricating nozzles is a high production cost.

Der Erfindung liegt die Aufgabe zugrunde den Fertigungsaufwand für die Anbringung der Ölspritzdüsen und der Schmierdüsen möglichst gering zu halten und dies ohne die Funktionalität dieser Teile zu beeinträchtigen.The invention has for its object to keep the production costs for the attachment of the oil spray nozzles and the lubricating nozzles as low as possible and to affect this without the functionality of these parts.

Gelöst wird diese Aufgabe durch die kennzeichnenden Merkmale des Patentanspruches 1.This object is achieved by the characterizing features of claim 1.

Dadurch, daß für die Ölspritzdüsen und die Schmierdüsen konzentrische Bohrungen vorgesehen sind und diese Bohrung zugleich den Ölkanal durchdringen, wird eine Vielzahl Bohrungen eingespart.Characterized in that concentric bores are provided for the oil spray nozzles and the lubricating nozzles and this bore at the same time penetrate the oil passage, a plurality of holes is saved.

Eine vorteilhafte Weiterbildung ist Anspruch 2 zu entnehmen.An advantageous development is shown in claim 2.

Dadurch, daß der Umfangsmantel der Schmierdüse zugleich der Verdrehsicherung dient wird ein gesondertes Bauteil für diese Funktion eingespart. Es ist ohne weiteres einzusehen, daß eine separate Verdrehsicherung aus Platzgründen nicht leicht anzuordnen ist.The fact that the circumferential casing of the lubricating nozzle also serves to prevent rotation, a separate component is saved for this function. It is readily apparent that a separate anti-rotation is not easy to arrange for reasons of space.

Eine weitere vorteilhafte Ausbildung kann Anspruch 3 entnommen werden.A further advantageous embodiment can be taken from claim 3.

Die in die ersten Bohrungen eingesetzten Ölspritzdüsen werden mittels einer Lasche und nur einer Schraube sowohl öldicht gehalten als auch gegen Verdrehung gesichert.The oil spray nozzles used in the first holes are kept both oil-tight and secured against rotation by means of a tab and only one screw.

Ein Ausführungsbeispiel der Erfindung ist an Hand von Zeichnungen dargestellt. Es zeigt:

Fig. 1
einen Querschnitt mit Ölspritzdüse und Schmierdüse
Fig. 2
eine Innenansicht des Kurbelgehäuses mit Ölspritzdüse und einer Lasche zur Befestigung derselben am Kurbelgehäuse
An embodiment of the invention is illustrated with reference to drawings. It shows:
Fig. 1
a cross section with oil spray nozzle and lubricating nozzle
Fig. 2
an interior view of the crankcase with oil spray nozzle and a tab for attaching the same to the crankcase

Figur 1 zeigt als Beispiel einen Querschnitt durch einen V-Motor. Dargestellt ist eine Zylinderbank 1. Der Ventiltrieb besteht aus einem Rollenstößel 2 mit Nockenwelle 3. Die Stößelstange ist hier nicht dargestellt.Figure 1 shows as an example a cross section through a V-engine. Shown is a cylinder bank 1. The valve train consists of a roller tappet 2 with camshaft 3. The push rod is not shown here.

Zur Kühlung eines Kolbens ist eine Ölspritzdüse 4 vorgesehen, welche gegen den Kolbenboden gerichtet ist. Die Versorgung der Ölspritzdüse 4 und einer Schmierdüse 5 mit Öl erfolgt über einen gemeinsamen Ölkanal 6 der die gesamte Zylinderbank 1 achsparallel zu einer Kurbelwelle durchdringt.For cooling a piston, an oil spray nozzle 4 is provided, which is directed against the piston crown. The supply of the oil spray nozzle 4 and a lubricating nozzle 5 with oil via a common oil passage 6 which penetrates the entire cylinder bank 1 axially parallel to a crankshaft.

Erfindungsgemäß werden die Ölspritzdüse 4 und Schmierdüse 5 in konzentrische Bohrungen 7, 8 eingebracht, welche vom Inneren des Kurbelgehäuses ausgehen und den Ölkanal 6 durchdringen und in einer Stößelführung 9 enden. Die Ölspritzdüse 4 wird in eine vom Kurbelgehäuse ausgehende und im Ölkanal 6 mündende erste Bohrung 7 eingebaut, die Schmierdüse 5 in eine vom Ölkanal 6 ausgehende und in der Stößelführung 9 mündende zweite Bohrung 8 eingebaut.According to the invention, the oil spray nozzle 4 and the lubricating nozzle 5 are introduced into concentric bores 7, 8, which start from the interior of the crankcase and penetrate the oil passage 6 and terminate in a tappet guide 9. The oil spray nozzle 4 is installed in a outgoing from the crankcase and opening out into the oil passage 6 first bore 7, the lubricating nozzle 5 in a outgoing from the oil passage 6 and opening in the tappet guide 9 second bore 8.

Die Schmierdüse 5 dient mit ihrem Umfangsmantel der Führung des Rollenstößels 2, der zu diesem Zweck an seinem Stößelmantel 10 eine Längsnut 11 aufweist in welcher der Umfangsmantel der Schmierdüse 5 gleitet und den Rollenstößel 2 vor einer Verdrehung schützt. Zur Befestigung kann die Schmierdüse 5 in die zweite Bohrung 8 eingeschraubt oder eingepreßt werden. Die Schmierdüse 5 versorgt über eine Bohrung 14 den Rollenstößel 2 mit Schmieröl.The lubricating nozzle 5 is used with its peripheral jacket of the leadership of the roller tappet 2, which has for this purpose on its tappet jacket 10 has a longitudinal groove 11 in which the circumferential casing of the lubricating nozzle 5 slides and protects the roller tappet 2 against rotation. For attachment, the lubricating nozzle 5 can be screwed or pressed into the second bore 8. The lubricating nozzle 5 supplies the roller tappet 2 with lubricating oil via a bore 14.

Die Ölspritzdüse 4 ist zu ihrer Befestigung und gleichzeitigen Positionierung mit einer Lasche 12 verbunden. Die Lasche 12 wiederum wird mittels einer Schraube 13 (Fig. 2) am Kurbelgehäuse befestigt. Die Lasche 12 stellt eine Verdrehsicherung der Ölspritzdüse 4 dar.The oil nozzle 4 is connected to its attachment and simultaneous positioning with a tab 12. The tab 12 in turn is fastened to the crankcase by means of a screw 13 (FIG. 2). The tab 12 represents a rotation of the oil spray nozzle 4.

Zur Abdichtung der Ölspritzdüse 4 dient ein zylindrischer Absatz 15 der in die erste Bohrung 7 ragt. Gehalten wird die Ölspritzdüse 4 von der Schraube 13. (Fig. 2).To seal the oil spray nozzle 4 is a cylindrical shoulder 15 which projects into the first hole 7. The oil spray nozzle 4 is held by the screw 13. (Figure 2).

In der Fig. 2 ist eine Innenansicht des Kurbelgehäuses dargestellt. Die Ölspritzdüse 4 wird mittels der Schraube 13 und Lasche 12 am Kurbelgehäuse befestigt und gegen Verdrehung gesichert. Die vorgefertigte Einheit aus Ölspritzdüse 4 und Lasche 12 läßt sich ohne großen Montageaufwand positioniert einbauen.2, an interior view of the crankcase is shown. The oil spray nozzle 4 is fixed by means of the screw 13 and tab 12 on the crankcase and secured against rotation. The prefabricated unit of oil spray nozzle 4 and tab 12 can be positioned without major installation effort.

Claims (3)

  1. Internal combustion engine with piston cooling and valve gear lubrication, in which the oil spray nozzles for cooling a piston bottom and lubricating nozzles for lubricating a valve gear are supplied with oil via a common oil duct which passes through a crankcase in its entire length in axis-parallel direction relative to a crankshaft, characterised in that the oil spray nozzles (4) and the lubricating nozzles (5) are installed in coaxial first and second bores (7, 8), whereby the first bores (7) for the installation of the oil spray nozzles (4) extend from the inside of the crankcase to the oil duct (6) and the second bores (8) for supplying roller tappets (2) with lube oil extend from the oil duct (6) to the tappet guides (9), that the oil spray nozzles (4) are installed in the first bores (7) in an oriented manner and that the lubricating nozzles (5), which double as anti-turning devices, are installed in the second bores (8).
  2. Internal combustion engine (1) according to Claim 1, characterised in that the free end of the lubricating nozzle (2) facing the a roller tappet (2) meshes with a longitudinal groove (11) of a tappet jacket (10) so that the roller tappet (2) can perform axial movements in an unimpaired manner, but is secured against turning.
  3. Internal combustion engine (1) according to Claim 1, characterised in that each oil spray nozzle (4) is fastened to the crankcase by means of a tab (12) and a screw (13) and is inserted in the respective first bore (7) so that it is tight and secured against turning.
EP20020027805 2001-12-14 2002-12-12 Combustion engine with piston cooling and valve drive lubrication Expired - Lifetime EP1319810B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2001161610 DE10161610A1 (en) 2001-12-14 2001-12-14 Internal combustion engine with piston cooling and lubrication of a valve train
DE10161610 2001-12-14

Publications (2)

Publication Number Publication Date
EP1319810A1 EP1319810A1 (en) 2003-06-18
EP1319810B1 true EP1319810B1 (en) 2007-01-24

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ID=7709293

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20020027805 Expired - Lifetime EP1319810B1 (en) 2001-12-14 2002-12-12 Combustion engine with piston cooling and valve drive lubrication

Country Status (2)

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EP (1) EP1319810B1 (en)
DE (2) DE10161610A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018135893A1 (en) * 2017-01-20 2018-07-26 두산인프라코어 주식회사 Adapter for roller tappet of engine and engine roller tappet assembly including same

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4214839A1 (en) * 1992-05-05 1993-11-11 Audi Ag Valve drive for IC engine - involves lift valve operated in opening direction by cam against force of pneumatic spring
DE4344078A1 (en) * 1993-12-23 1995-06-29 Daimler Benz Ag Device for supplying liquids to a flask
FR2745329B1 (en) * 1996-02-23 1998-03-27 Renault LUBRICATION CIRCUIT FOR INTERNAL COMBUSTION ENGINE
JPH09317428A (en) * 1996-06-03 1997-12-09 Aisan Ind Co Ltd Valve mechanism for engine
US6250275B1 (en) * 1999-08-16 2001-06-26 Caterpillar Inc. Internal combustion engine piston pin lubrication

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018135893A1 (en) * 2017-01-20 2018-07-26 두산인프라코어 주식회사 Adapter for roller tappet of engine and engine roller tappet assembly including same
CN110520602A (en) * 2017-01-20 2019-11-29 斗山英维高株式会社 Adapter for engine roller tapper and the engine roller tapper component including the adapter
CN110520602B (en) * 2017-01-20 2021-12-07 斗山英维高株式会社 Adapter for engine roller lifter and engine roller lifter assembly including the same

Also Published As

Publication number Publication date
EP1319810A1 (en) 2003-06-18
DE10161610A1 (en) 2003-06-26
DE50209333D1 (en) 2007-03-15

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