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EP1664513A1 - Device for guiding media in a cylinder block and crankcase - Google Patents

Device for guiding media in a cylinder block and crankcase

Info

Publication number
EP1664513A1
EP1664513A1 EP04764575A EP04764575A EP1664513A1 EP 1664513 A1 EP1664513 A1 EP 1664513A1 EP 04764575 A EP04764575 A EP 04764575A EP 04764575 A EP04764575 A EP 04764575A EP 1664513 A1 EP1664513 A1 EP 1664513A1
Authority
EP
European Patent Office
Prior art keywords
combustion engine
internal combustion
cylinder
transverse channel
pistons
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
EP04764575A
Other languages
German (de)
French (fr)
Other versions
EP1664513B1 (en
Inventor
Xaver Stemmer
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.)
Audi AG
Original Assignee
Audi 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 Audi AG filed Critical Audi AG
Publication of EP1664513A1 publication Critical patent/EP1664513A1/en
Application granted granted Critical
Publication of EP1664513B1 publication Critical patent/EP1664513B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
    • F01P11/04—Arrangements of liquid pipes or hoses
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P3/00—Liquid cooling
    • F01P3/02—Arrangements for cooling cylinders or cylinder heads
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F1/00—Cylinders; Cylinder heads 
    • F02F1/02—Cylinders; Cylinder heads  having cooling means
    • F02F1/10—Cylinders; Cylinder heads  having cooling means for liquid cooling
    • F02F1/108—Siamese-type cylinders, i.e. cylinders cast together
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F1/00—Cylinders; Cylinder heads 
    • F02F1/02—Cylinders; Cylinder heads  having cooling means
    • F02F1/10—Cylinders; Cylinder heads  having cooling means for liquid cooling
    • F02F1/14—Cylinders with means for directing, guiding or distributing liquid stream
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F7/00—Casings, e.g. crankcases
    • F02F7/0065—Shape of casings for other machine parts and purposes, e.g. utilisation purposes, safety
    • F02F7/007—Adaptations for cooling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P3/00—Liquid cooling
    • F01P3/02—Arrangements for cooling cylinders or cylinder heads
    • F01P2003/021—Cooling cylinders

Definitions

  • the invention relates to a device for media guidance in a cylinder crankcase of a reciprocating piston internal combustion engine with a plurality of cylinders, according to the preamble of patent claim 1.
  • Cross channels of the generic type are known in cylinder housings of internal combustion engines both for supplying lubricating oil and as cooling water guides for the cooling system in a large number of designs (cf. for example DE 43 41 040 A1 or DE 36 01 383 A1). Due to the limited space, the thinnest possible wall thicknesses of the cylinder housing and / or due to adjacent functional parts, these cross-channels are mostly complicated in terms of their geometry and flow cross-section.
  • the object of the invention is to provide a device of the generic type, which can be produced with a simple channel guide and a sufficiently dimensioned flow cross-section, even in a confined space.
  • the at least one transverse channel runs in a free space which is formed by recesses in two pistons which are adjacent to one another in the lower region of the piston shafts and above the crankshafts. shaft bearing of the internal combustion engine is formed.
  • the cross-channel can thus be designed with a larger diameter than the distance between the cylinders to one another (gusset distance), as a result of which the number of cross-channels can be reduced and / or the flow rate can be increased.
  • the transverse channel can preferably be used to guide the cooling water between cooling chambers of the internal combustion engine on both sides, although corresponding transverse channels can also be provided as an alternative or in addition for supplying lubricating oil to the internal combustion engine.
  • the transverse channel can be formed in a simple manner by a tube inserted into a transverse bore in the cylinder housing.
  • the machining of the cylinder running surfaces is simplified by the fact that the tube forming the transverse channel is only used after finishing the cylinder raceways or the entire cylinder crankcase and therefore does not impede the preceding machining steps.
  • the pipe passes through the ventilation openings.
  • the preferably thin-walled tube thus bridges these ventilation openings and enables an even more compact arrangement of the transverse channel.
  • the transverse channel can preferably be connected, on the one hand, directly to the water pump of the internal combustion engine via a feed line and thus effectively supply cooling water to the longitudinal side of the in-line internal combustion engine facing away from the water pump. Furthermore, the at least one transverse channel can run above a longitudinal channel of the pressure circulation lubrication system of the internal combustion engine arranged in the cylinder crankcase and thus reduce the production outlay while avoiding channel deflections. Both the transverse channel and the said longitudinal channel can be produced by correspondingly straight bores.
  • the transverse channel can also be particularly advantageously inclined such that it runs below the higher balancer shaft and above the lower second balancer shaft.
  • pistons can be so-called box-type pistons or slipper pistons, the piston shafts or piston shirts of which form corresponding lateral recesses in the region below the piston rings, only lateral guides of the pistons transverse to the longitudinal axis of the series internal combustion engine.
  • Flg. 1 shows a partial cross section according to line I - I of FIG. 2 through a cylinder housing of a four-cylinder inline reciprocating piston internal combustion engine with a transverse channel designed as a tube in the gusset area between two adjacent cylinders
  • Fig. 2 shows a longitudinal section along line II - II of Fig. 1 through the section shown cylinder housing.
  • Fig. 1 denotes a cylinder housing, shown in sections, of a four-cylinder in-line reciprocating piston internal combustion engine, which, if not shown and described, can be of a known type.
  • cylinders 12 are formed with corresponding running surfaces for pistons 14.
  • the pistons 14 are connected in a known manner to a crankshaft of the internal combustion engine via piston pins and connecting rods, not shown.
  • crankshaft is rotatably supported in the transverse walls 16 of the cylinder crankcase 10 and in corresponding end walls (not shown), with corresponding bearing seats 18 being incorporated into the transverse walls 16, which represent the main crankshaft bearing arrangement with screw-on bearing covers (not shown).
  • bearing points 20, 22 are provided in the cylinder crankcase 10 on both sides of the crankshaft axis of rotation or on the longitudinal sides, in which balancer shafts (not shown) are rotatably mounted to compensate for free mass forces or moments of 2nd order of the internal combustion engine.
  • the pistons 14 are designed as so-called box pistons, the piston shafts of which are provided with symmetrical recesses 14a below the piston rings (without reference numerals), so that the pistons 14 in their lower region only in the transverse direction (corresponding to the sectional plane of FIG. 1) in the cylinders 12 are led.
  • the cylinder walls 12a of the cylinders 12 end in the lateral regions of the pistons 14 with respect to the longitudinal direction of the cylinder housing 10, as can be seen in FIG.
  • the cylinder liners thus end in the region of the recesses 14a of the pistons 14 due to the ventilation openings 26 below the piston rings and in the region of the pistons 14 with respect to the transverse direction of the cylinder housing 10 approximately with the lower edge of the piston skirt, so that lateral guides of the pistons 14 only crosswise to the longitudinal axis of the cylinder housing 10 are formed.
  • the ventilation openings 26 provided in the transverse walls 16 of the cylinder housing 10 connect the crankcase spaces located between the transverse walls 16 of the cylinder housing 10 (which are delimited at the bottom by the oil pan, not shown) with one another for the purpose of pressure compensation.
  • a transverse channel 28 is provided, which is composed of a corresponding bore 30 in the cylinder housing 10 and a thin-walled tube 32, the tube 32 being inserted tightly into the bore 30. This can be accomplished by pressing in and / or by inserting appropriate sealing rings.
  • the tube 32 extends cantilevered through the ventilation opening 26 and is arranged inclined such that it (see FIG. 1) runs below the higher balancer shaft (bearing point 20) and above the lower balancer shaft (bearing point 22) acceptable wall thicknesses between said bearing points 20, 22 and bore 30 for tube 32 are taken into account or provided.
  • the transverse channel 28 is, as indicated schematically in FIG. 1, connected via a tubular branch 34 directly to the pump housing 36 of the water pump (not shown) of the internal combustion engine and supplies cooling water spaces (not shown) arranged on the opposite side of the cylinder housing 10 with cooling liquid , Said pump housing 36 is integrated in the cylinder housing 10.
  • a longitudinal channel 38 is cast into the cylinder housing 10 on one side of the crankshaft axis of rotation, which, as part of the pressure circulation lubrication system of the internal combustion engine, supplies the crankshaft bearings 18 with lubricating oil, among other things, via branch channels 40.
  • transverse channels 28 can also be arranged in further transverse walls 16 of the cylinder housing 10.
  • the transverse channels 28 can also carry other media, in particular lubricating oil from the lubrication system of the internal combustion engine.
  • the cylinder housing 10 can also be provided in a manner not shown with cylinder liners which have the said running surfaces for the pistons 14.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)

Abstract

The invention relates to a device for guiding media in a cylinder block and crankcase of a reciprocating piston in-line combustion engine having a number of cylinders. To this end, the media guide comprises, among other things, at least one cross-channel that leads from one longitudinal side to the other longitudinal side of the cylinder block and crankcase. A structurally advantageous and simple design is provided by virtue of the fact that the cross-channel runs inside a free space, which is formed by recesses of two adjacent pistons in the lower area of the piston skirts and above the crankshaft bearing of the combustion engine.

Description

Beschreibung description
Vorrichtung zur Medienfuhrung in einem ZylinderkurbelαehäuseDevice for media guidance in a Zylinderkurbelαehäuse
Die Erfindung betrifft eine Vorrichtung zur Medienführung in einem Zylinderkurbelgehäuse einer Hubkolben - Reihenbrennkraftmaschine mit mehreren Zylindern, gemäß dem Oberbegriff des Patentanspruches 1.The invention relates to a device for media guidance in a cylinder crankcase of a reciprocating piston internal combustion engine with a plurality of cylinders, according to the preamble of patent claim 1.
Querkanäle der gattungsgemäßen Art sind bei Zylindergehäusen von Brennkraftmaschinen sowohl zur Schmierölversorgung als auch als Kühlwasserführungen für das Kühlsystem in einer Vielzahl von Ausführungen bekannt (vgl. beispielsweise DE 43 41 040 A1 oder DE 36 01 383 A1 ). Aufgrund der beengten Raumverhältnisse, möglichst dünnen Wandstärken des Zylindergehäuses und/oder durch angrenzende Funktionsteile sind diese Querkanäle zumeist kompliziert in ihrer Geometrie und im Durchströmquerschnitt eingeschränkt.Cross channels of the generic type are known in cylinder housings of internal combustion engines both for supplying lubricating oil and as cooling water guides for the cooling system in a large number of designs (cf. for example DE 43 41 040 A1 or DE 36 01 383 A1). Due to the limited space, the thinnest possible wall thicknesses of the cylinder housing and / or due to adjacent functional parts, these cross-channels are mostly complicated in terms of their geometry and flow cross-section.
Aufgabe der Erfindung ist es, eine Vorrichtung der gattungsgemäßen Art anzugeben, die bei einfacher Kanalführung und ausreichend bemessenem Durchströmquerschnitt auch bei beengtem Bauraum herstellbar ist.The object of the invention is to provide a device of the generic type, which can be produced with a simple channel guide and a sufficiently dimensioned flow cross-section, even in a confined space.
Diese Aufgabe wird erfindungsgemäß mit den kennzeichnenden Merkmalen des Patentanspruches 1 gelöst. Vorteilhafte Weiterbildungen der Erfindung beinhalten die weiteren Patentansprüche.This object is achieved with the characterizing features of claim 1. Advantageous developments of the invention include the further claims.
Erfindungsgemäß wird vorgeschlagen, dass der zumindest eine Querkanal in einem Freiraum verläuft, der durch Ausnehmungen zweier einander benachbarter Kolben im unteren Bereich der Kolbenschäfte und oberhalb der Kurbel- welleniagerung der Brennkraftmaschine gebildet ist. Damit kann der Querkanal mit größerem Durchmesser ausgeführt sein als der Abstand der Zylinder zueinander (Zwickelabstand), wodurch die Anzahl der Querkanäle verminderbar und/oder die Durchflussleistung angehoben werden kann. Zudem ergibt sich eine vereinfachte Kanalführung, ggf. ohne erforderliche Strömungsumlenkun- gen.It is proposed according to the invention that the at least one transverse channel runs in a free space which is formed by recesses in two pistons which are adjacent to one another in the lower region of the piston shafts and above the crankshafts. shaft bearing of the internal combustion engine is formed. The cross-channel can thus be designed with a larger diameter than the distance between the cylinders to one another (gusset distance), as a result of which the number of cross-channels can be reduced and / or the flow rate can be increased. In addition, there is a simplified ducting, possibly without the need for flow diversions.
Bevorzugt kann der Querkanal zur Kühlwasserführung zwischen beidseitigen Kühlräumen der Brennkraftmaschine dienen, obwohl auch entsprechende Querkanäle zur Schmierölversorgung der Brennkraftmaschine alternativ oder zusätzlich vorgesehen sein können.The transverse channel can preferably be used to guide the cooling water between cooling chambers of the internal combustion engine on both sides, although corresponding transverse channels can also be provided as an alternative or in addition for supplying lubricating oil to the internal combustion engine.
Herstellungstechnisch besonders einfach kann der Querkanal durch ein in eine Querbohrung des Zylindergehäuses eingesetztes Rohr gebildet sein. Neben der vereinfachten Kanalführung und Gießbarkeit des Zylinderkurbelgehäuses wird die Bearbeitung der Zylinderlaufflächen (Bohren, Honen) vereinfacht, indem das den Querkanal bildende Rohr erst nach der Fertigbearbeitung der Zylinderlaufbahnen bzw. des gesamten Zylinderkurbelgehäuses eingesetzt wird und deshalb die vorangehenden Bearbeitungsschritte nicht behindert.In terms of production technology, the transverse channel can be formed in a simple manner by a tube inserted into a transverse bore in the cylinder housing. In addition to the simplified channel routing and castability of the cylinder crankcase, the machining of the cylinder running surfaces (drilling, honing) is simplified by the fact that the tube forming the transverse channel is only used after finishing the cylinder raceways or the entire cylinder crankcase and therefore does not impede the preceding machining steps.
Des weiteren wird vorgeschlagen, dass bei einer Brennkraftmaschine mit zwischen den Zylinderbohrungen in den Zylinderkurbelgehäuse-Querwänden vorgesehenen Ventilationsöffnungen das Rohr die Ventilationsöffnungen durchquert. Damit überbrückt das vorzugsweise dünnwandige Rohr diese Ventilationsöffnungen und ermöglicht eine noch gedrängtere Anordnung des Querka- nales.It is also proposed that in an internal combustion engine with ventilation openings provided between the cylinder bores in the cylinder crankcase transverse walls, the pipe passes through the ventilation openings. The preferably thin-walled tube thus bridges these ventilation openings and enables an even more compact arrangement of the transverse channel.
Der Querkanal kann vorzugsweise einerseits über eine Zuführung unmittelbar an die Wasserpumpe der Brennkraftmaschine angeschlossen sein und somit wirksam die der Wasserpumpe abgewandte Längsseite der Reihenbrennkraftmaschine mit Kühlwasser versorgen. Ferner kann der zumindest eine Querkanal oberhalb eines im Zylinderkurbelgehäuse angeordneten Längskanales des Druckumlauf-Schmiersystems der Brennkraftmaschine verlaufen und somit den Fertigungsaufwand unter Vermeidung von Kanalumlenkungen reduzieren. Sowohl der Querkanal als auch der besagte Längskanal können durch entsprechend geradlinige Bohrungen hergestellt sein.The transverse channel can preferably be connected, on the one hand, directly to the water pump of the internal combustion engine via a feed line and thus effectively supply cooling water to the longitudinal side of the in-line internal combustion engine facing away from the water pump. Furthermore, the at least one transverse channel can run above a longitudinal channel of the pressure circulation lubrication system of the internal combustion engine arranged in the cylinder crankcase and thus reduce the production outlay while avoiding channel deflections. Both the transverse channel and the said longitudinal channel can be produced by correspondingly straight bores.
Besonders vorteilhaft kann ferner der Querkanal bei einer Brennkraftmaschine mit zwei beiderseits der Zylinder angeordneten Ausgleichswellen derart geneigt ausgeführt sein, dass er unterhalb der höher liegenden Ausgleichswelle und oberhalb der tiefer liegenden zweiten Ausgleichswelle verläuft. Unter Inkaufnahme einer geringfügigen Neigung des Querkanales wird in einfacher Weise der Freigang der Ausgleichswellen und die fertigungstechnisch günstige Anordnung deren Lagerstellen im Zylinderkurbelgehäuse sichergestellt.In an internal combustion engine with two balancer shafts arranged on both sides of the cylinders, the transverse channel can also be particularly advantageously inclined such that it runs below the higher balancer shaft and above the lower second balancer shaft. By accepting a slight inclination of the transverse channel, the clearance of the balancer shafts and the arrangement, which is favorable in terms of production technology, of their bearing points in the cylinder crankcase are ensured in a simple manner.
Schließlich können die Kolben sogenannte Kastenkolben oder Slipperkolben sein, deren Kolbenschäfte bzw. Kolbenhemden durch entsprechende symetri- sche Ausnehmungen im Bereich unterhalb der Kolbenringe nur Seitenführungen der Kolben quer zur Längsachse der Reihenbrennkraftmaschine bilden.Finally, the pistons can be so-called box-type pistons or slipper pistons, the piston shafts or piston shirts of which form corresponding lateral recesses in the region below the piston rings, only lateral guides of the pistons transverse to the longitudinal axis of the series internal combustion engine.
Ein Ausführungsbeispiel der Erfindung ist im Folgenden mit weiteren Einzelheiten näher beschrieben.An embodiment of the invention is described in more detail below with further details.
Die anliegende schematische Zeichnung zeigt in:The attached schematic drawing shows in:
Flg. 1 einen teilweisen Querschnitt gemäß Linie I - I der Fig. 2 durch ein Zylindergehäuse einer Vierzylinder-Reihen-Hubkolben-Brennkraftmaschine mit einem als Rohr ausgeführten Querkanal im Zwickelbereich zwischen zwei benachbarten Zylindern, und Fig. 2 einen Längsschnitt gemäß Linie II - II der Fig. 1 durch das abschnittsweise dargestellte Zylindergehäuse.Flg. 1 shows a partial cross section according to line I - I of FIG. 2 through a cylinder housing of a four-cylinder inline reciprocating piston internal combustion engine with a transverse channel designed as a tube in the gusset area between two adjacent cylinders, and Fig. 2 shows a longitudinal section along line II - II of Fig. 1 through the section shown cylinder housing.
In der Fig. 1 ist mit 10 ein abschnittsweise dargestelltes Zylindergehäuse einer Vierzylinder-Reihen-Hubkolben-Brennkraftmaschine bezeichnet, die soweit nicht dargestellt und beschrieben bekannter Bauart sein kann.In Fig. 1, 10 denotes a cylinder housing, shown in sections, of a four-cylinder in-line reciprocating piston internal combustion engine, which, if not shown and described, can be of a known type.
In dem Zylindergehäuse 10 sind Zylinder 12 (vgl. Fig. 2) mit entsprechenden Laufflächen für Kolben 14 ausgebildet.In the cylinder housing 10, cylinders 12 (see FIG. 2) are formed with corresponding running surfaces for pistons 14.
Die Kolben 14 sind in bekannter Weise über nicht dargestellte Kolbenbolzen und Pleuel mit einer Kurbelwelle der Brennkraftmaschine trieblich verbunden.The pistons 14 are connected in a known manner to a crankshaft of the internal combustion engine via piston pins and connecting rods, not shown.
Die Kurbelwelle ist dabei in Querwänden 16 des Zylinderkurbelgehäuses 10 und in entsprechenden Stirnwänden (nicht ersichtlich) drehbar gelagert, wobei entsprechende Lagerstühle 18 in die Querwände 16 eingearbeitet sind, die mit anschraubbaren Lagerdeckeln (nicht dargestellt) die Kurbelwellen-Hauptlagerung darstellen.The crankshaft is rotatably supported in the transverse walls 16 of the cylinder crankcase 10 and in corresponding end walls (not shown), with corresponding bearing seats 18 being incorporated into the transverse walls 16, which represent the main crankshaft bearing arrangement with screw-on bearing covers (not shown).
Ferner sind in dem Zylinderkurbelgehäuse 10 beiderseits der Kurbelwellendrehachse bzw. an den Längsseiten Lagerstellen 20, 22 vorgesehen, in denen Ausgleichswellen (nicht dargestellt) zum Ausgleich freier Massenkräfte bzw. -momente 2. Ordnung der Brennkraftmaschine drehbar gelagert sind.In addition, bearing points 20, 22 are provided in the cylinder crankcase 10 on both sides of the crankshaft axis of rotation or on the longitudinal sides, in which balancer shafts (not shown) are rotatably mounted to compensate for free mass forces or moments of 2nd order of the internal combustion engine.
Die Kolben 14 sind als sogenannte Kastenkolben ausgeführt, deren Kolbenschaft unterhalb der Kolbenringe (ohne Bezugszeichen) mit symetrischen Ausnehmungen 14a versehen sind, so dass die Kolben 14 in ihrem unteren Bereich nur in Querrichtung (entsprechend der Schnittebene der Fig. 1) in den Zylindern 12 geführt sind. Die Zylinderwände 12a der Zylinder 12 enden in den bezogen auf die Längsrichtung des Zylindergehäuses 10 seitlichen Bereichen der Kolben 14, wie aus Fig. 2 ersichtlich, in der unteren Totpunkt-Stellung der Kolben 14 aufgrund von Ventilationsöffnungen 26 knapp unterhalb des rotationssymetrischen Bereiches der Kolben 14 mit den Kolbenringen, wodurch im Zwickelbereich ( = ineinander übergehende Zylinderwände 12a einander benachbarter Zylinder 12) wie ersichtlich jeweils ein Freiraum 24 geschaffen ist, der von den Ausnehmungen 14a der Kolben 14 begrenzt ist und der zudem oberhalb der Kurbelwellenlagerung mit dem Lagerstuhl 18 liegt.The pistons 14 are designed as so-called box pistons, the piston shafts of which are provided with symmetrical recesses 14a below the piston rings (without reference numerals), so that the pistons 14 in their lower region only in the transverse direction (corresponding to the sectional plane of FIG. 1) in the cylinders 12 are led. The cylinder walls 12a of the cylinders 12 end in the lateral regions of the pistons 14 with respect to the longitudinal direction of the cylinder housing 10, as can be seen in FIG. 2, in the bottom dead center position of the pistons 14 due to ventilation openings 26 just below the rotationally symmetrical region of the pistons 14 with the piston rings, as a result of which, as can be seen, a free space 24 is created in the gusset area (= merging cylinder walls 12a of adjacent cylinders 12), which is delimited by the recesses 14a of the pistons 14 and which is also above the crankshaft bearing with the bearing block 18.
Die Zylinderlaufbahnen enden somit im Bereich der Ausnehmungen 14a der Kolben 14 aufgrund der Ventilationsöffnungen 26 unterhalb der Kolbenringe und im Bereich der Kolben 14 bezogen auf die Querrichtung des Zylindergehäuses 10 in etwa mit der Unterkante des Kolbenhemdes, so dass Seitenführungen der Kolben 14 nur quer zur Längsachse des Zylindergehäuses 10 gebildet sind.The cylinder liners thus end in the region of the recesses 14a of the pistons 14 due to the ventilation openings 26 below the piston rings and in the region of the pistons 14 with respect to the transverse direction of the cylinder housing 10 approximately with the lower edge of the piston skirt, so that lateral guides of the pistons 14 only crosswise to the longitudinal axis of the cylinder housing 10 are formed.
Die in den Querwänden 16 des Zylindergehäuses 10 vorgesehenen Ventilationsöffnungen 26 (vgl. Fig. 1) verbinden die zwischen den Querwänden 16 des Zylindergehäuses 10 liegenden Kurbelgehäuseräume (die nach unten von der nicht dargestellten Ölwanne begrenzt sind) miteinander zum Zwecke eines Druckausgleiches.The ventilation openings 26 provided in the transverse walls 16 of the cylinder housing 10 (cf. FIG. 1) connect the crankcase spaces located between the transverse walls 16 of the cylinder housing 10 (which are delimited at the bottom by the oil pan, not shown) with one another for the purpose of pressure compensation.
In dem besagten Freiraum 24 ist ein Querkanal 28 vorgesehen, der sich aus einer entsprechenden Bohrung 30 im Zylindergehäuse 10 und einem dünnwandigem Rohr 32 zusammensetzt, wobei das Rohr 32 dicht in die Bohrung 30 eingesetzt ist. Dies kann durch Einpressen und/oder durch Einsetzen entsprechender Dichtringe bewerkstelligt sein. Das Rohr 32 erstreckt sich dabei frei tragend durch die Ventilationsöffnung 26 und ist derart geneigt angeordnet, dass es (vgl. Fig. 1) unterhalb der höher liegenden Ausgleichswelle (Lagerstelle 20) und oberhalb der tiefer liegenden Ausgleichswelle (Lagerstelle 22) verläuft, wobei noch vertretbare Wandstärken zwischen den besagten Lagerstellen 20, 22 und der Bohrung 30 für das Rohr 32 berücksichtigt bzw. vorgesehen sind.In said free space 24 a transverse channel 28 is provided, which is composed of a corresponding bore 30 in the cylinder housing 10 and a thin-walled tube 32, the tube 32 being inserted tightly into the bore 30. This can be accomplished by pressing in and / or by inserting appropriate sealing rings. The tube 32 extends cantilevered through the ventilation opening 26 and is arranged inclined such that it (see FIG. 1) runs below the higher balancer shaft (bearing point 20) and above the lower balancer shaft (bearing point 22) acceptable wall thicknesses between said bearing points 20, 22 and bore 30 for tube 32 are taken into account or provided.
Der Querkanal 28 ist wie in Fig. 1 schematisch angedeutet über einen rohr- förmigen Abzweig 34 unmittelbar an das Pumpengehäuse 36 der Wasserpumpe (nicht dargestellt) der Brennkraftmaschine angeschlossen und versorgt auf der gegenüber liegenden Seite des Zylindergehäuses 10 angeordnete Kühlwasserräume (nicht gezeigt) mit Kühlflüssigkeit. Das besagte Pumpengehäuse 36 ist in das Zylindergehäuse 10 integriert.The transverse channel 28 is, as indicated schematically in FIG. 1, connected via a tubular branch 34 directly to the pump housing 36 of the water pump (not shown) of the internal combustion engine and supplies cooling water spaces (not shown) arranged on the opposite side of the cylinder housing 10 with cooling liquid , Said pump housing 36 is integrated in the cylinder housing 10.
Unterhalb des Querkanales 28 ist in das Zylindergehäuse 10 auf der einen Seite der Kurbelwellendrehachse ein Längskanal 38 eingegossen, der als Teil des Druckumlauf-Schmiersystems der Brennkraftmaschine unter anderem über Stichkanäle 40 die Kurbelwellenlager 18 mit Schmieröl versorgt.Below the transverse channel 28, a longitudinal channel 38 is cast into the cylinder housing 10 on one side of the crankshaft axis of rotation, which, as part of the pressure circulation lubrication system of the internal combustion engine, supplies the crankshaft bearings 18 with lubricating oil, among other things, via branch channels 40.
Anstelle eines Querkanales 28 können auch mehrere Querkanäle in weiteren Querwänden 16 des Zylindergehäuses 10 angeordnet sein. Dabei können die Querkanäle 28 auch andere Medien führen, insbesondere Schmieröl aus dem Schmiersystem der Brennkraftmaschine. Das Zylindergehäuse 10 kann ferner in nicht dargestellter Weise auch mit Zylinderlaufbüchsen versehen sein, die die besagten Laufflächen für die Kolben 14 aufweisen. Instead of one transverse channel 28, a plurality of transverse channels can also be arranged in further transverse walls 16 of the cylinder housing 10. The transverse channels 28 can also carry other media, in particular lubricating oil from the lubrication system of the internal combustion engine. The cylinder housing 10 can also be provided in a manner not shown with cylinder liners which have the said running surfaces for the pistons 14.

Claims

Ansprüche Expectations
1. Vorrichtung zur Medienführung in einem Zylinderkurbelgehäuse einer Hubkolben - Reihenbrennkraftmaschine mit mehreren Zylindern, bei der die Medienführung unter anderem zumindest einen von der einen Längsseite zur anderen Längsseite des Zylinderkurbelgehäuses führenden Querkanal aufweist, dadurch gekennzeichnet, dass der Querkanal (28) in einem Freiraum (24) verläuft, der durch Ausnehmungen (14a) zweier einander benachbarter Kolben (14) im unteren Bereich der Kolbenschäfte und oberhalb der Kurbelwellenlagerung (18) der Brennkraftmaschine gebildet ist.1.Device for media guidance in a cylinder crankcase of a reciprocating piston - internal combustion engine with several cylinders, in which the media guidance has at least one transverse channel leading from one long side to the other long side of the cylinder crankcase, characterized in that the transverse channel (28) is in a free space ( 24), which is formed by recesses (14a) of two adjacent pistons (14) in the lower region of the piston shafts and above the crankshaft bearing (18) of the internal combustion engine.
2. Vorrichtung nach Anspruch 1 , dadurch gekennzeichnet, dass der Querkanal (28) zur Kühlwasserführung zwischen beidseitigen Kühleinrichtungen der Brennkraftmaschine dient.2. Device according to claim 1, characterized in that the transverse channel (28) is used to guide cooling water between cooling devices of the internal combustion engine on both sides.
3. Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der Querkanal (28) durch ein in eine Querbohrung (30) des Zylindergehäuses (10) eingesetztes Rohr (32) gebildet ist.3. Device according to claim 1 or 2, characterized in that the transverse channel (28) is formed by a tube (32) inserted into a transverse bore (30) of the cylinder housing (10).
4. Vorrichtung nach einem oder mehreren der vorhergehenden Ansprüche, wobei zwischen den Zylinderbohrungen (12) in den Zylinderkurbelgehäuse-Querwänden (16) Ventilationsöffnungen (26) vorgesehen sind, dadurch gekennzeichnet, dass das Rohr (32) die Ventilationsöffnungen (26) durchquert. 4. Device according to one or more of the preceding claims, wherein ventilation openings (26) are provided between the cylinder bores (12) in the cylinder crankcase transverse walls (16), characterized in that the tube (32) passes through the ventilation openings (26).
5. Vorrichtung nach einem oder mehreren der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass der Querkanal (28) einerseits über eine Zuführung (34) unmittelbar an die Wasserpumpe (36) der Brennkraftmaschine angeschlossen ist.5. The device according to one or more of claims 1 to 4, characterized in that the transverse channel (28) is connected on the one hand via a feed (34) directly to the water pump (36) of the internal combustion engine.
6. Vorrichtung nach einem oder mehreren der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass der Querkanal (28) oberhalb eines im Zylinderkurbelgehäuse (10) angeordneten Längskanals (38) des Druckumlauf- Schmiersystems der Brennkraftmaschine verläuft.6. The device according to one or more of claims 1 to 5, characterized in that the transverse channel (28) above a longitudinal channel (38) arranged in the cylinder crankcase (10) of the pressure circulation lubrication system of the internal combustion engine.
7. Vorrichtung nach einem oder mehreren der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass der Querkanal (28) bei einer Brennkraftmaschine mit zwei beiderseits der Zylinder (12) angeordneten Ausgleichswellen derart geneigt ausgeführt ist, dass er im Querschnitt gesehen unterhalb der höher liegenden Ausgleichswelle (Lagerstelle 20) und oberhalb der tiefer liegenden Ausgleichswelie (Lagerstelle 22) verläuft.7. The device according to one or more of claims 1 to 6, characterized in that the transverse channel (28) in an internal combustion engine with two balancer shafts arranged on both sides of the cylinder (12) is designed so inclined that it is seen in cross section below the higher balancer shaft (Bearing point 20) and above the lower-lying balancing shaft (bearing point 22).
8. Vorrichtung nach einem oder mehreren der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Kolben (14) sogenannte Kastenkolben oder Slipperkolben sind. 8. The device according to one or more of the preceding claims, characterized in that the pistons (14) are so-called box pistons or slipper pistons.
EP04764575A 2003-09-01 2004-08-28 Device for guiding media in a cylinder block and crankcase Expired - Lifetime EP1664513B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10340157A DE10340157B4 (en) 2003-09-01 2003-09-01 Device for media guidance in a cylinder crankcase
PCT/EP2004/009601 WO2005024215A1 (en) 2003-09-01 2004-08-28 Device for guiding media in a cylinder block and crankcase

Publications (2)

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EP1664513A1 true EP1664513A1 (en) 2006-06-07
EP1664513B1 EP1664513B1 (en) 2009-08-19

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US (1) US7509934B2 (en)
EP (1) EP1664513B1 (en)
DE (2) DE10340157B4 (en)
WO (1) WO2005024215A1 (en)

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Also Published As

Publication number Publication date
EP1664513B1 (en) 2009-08-19
DE10340157B4 (en) 2008-10-02
US7509934B2 (en) 2009-03-31
DE502004009932D1 (en) 2009-10-01
US20060249104A1 (en) 2006-11-09
WO2005024215A1 (en) 2005-03-17
DE10340157A1 (en) 2005-03-31

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