EP0999353B1 - Cast machine housing for forced cooled engines with a lubricating system, especially with cylinders in line - Google Patents

Cast machine housing for forced cooled engines with a lubricating system, especially with cylinders in line Download PDF

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Publication number
EP0999353B1
EP0999353B1 EP99119597A EP99119597A EP0999353B1 EP 0999353 B1 EP0999353 B1 EP 0999353B1 EP 99119597 A EP99119597 A EP 99119597A EP 99119597 A EP99119597 A EP 99119597A EP 0999353 B1 EP0999353 B1 EP 0999353B1
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EP
European Patent Office
Prior art keywords
casing
engine
engine casing
duct
lubricant
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
EP99119597A
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German (de)
French (fr)
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EP0999353A1 (en
Inventor
Albrecht Nägele
Piet Pater
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Bayerische Motoren Werke AG
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Bayerische Motoren Werke AG
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Publication of EP0999353A1 publication Critical patent/EP0999353A1/en
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Classifications

    • 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 or frames
    • F02F7/0065—Shape of casings for other machine parts and purposes, e.g. utilisation purposes, safety
    • F02F7/0073—Adaptations for fitting the engine, e.g. front-plates or bell-housings
    • 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
    • F01P5/00—Pumping cooling-air or liquid coolants
    • F01P5/10—Pumping liquid coolant; Arrangements of coolant pumps
    • 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
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M5/00—Heating, cooling, or controlling temperature of lubricant; Lubrication means facilitating engine starting
    • F01M5/002—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
    • F01P7/00—Controlling of coolant flow
    • F01P7/14—Controlling of coolant flow the coolant being liquid
    • F01P7/16—Controlling of coolant flow the coolant being liquid by thermostatic control

Definitions

  • the invention relates to Cast machine housing for a forced-circulation cooled internal combustion engine with Lubrication system, especially with cylinders arranged in a row, with in the machine housing Lubricant and coolant channels are integrated, and the latter one with a coolant pump with a spiral housing arranged in one piece on the machine housing connected inlet channel for a cooling jacket of a cylinder and a with a cylinder head in coolant-carrying connection, by means of a Thermostat valve include controllable short-circuit channel, and the thermostatic valve is arranged in a thermostat housing molded onto the spiral housing.
  • Such a cast machine housing is known from EP 0 505 346 B1.
  • the coolant pump combined with an oil pump on one long side of the machine housing in considerably protruding Arranged way, which in addition to an increased space requirement in disadvantageous Way sideways, relatively long coolant channels are given that little contribute to stiffening the machine housing.
  • the invention has for its object a generic casting machine housing with integrated facilities for liquid operating materials in a compact Form way, operating channels designed as integrated hollow profiles serve an additional stiffening of the machine housing.
  • Integrated control shaft cover results in connection with the arrangement of a first inlet channel section on the control shaft cover in addition to an advantageous little protruding arrangement in terms of acoustics or vibrations of the Control shaft cover advantageous stiffening.
  • the design of the machine housing according to the invention is particularly suitable for a version made of a light metal alloy with thin walls.
  • the invention is partly based on an end view shown in the drawing cut machine housing described.
  • a cast machine housing 1 for a forced circulation cooled, not shown Internal combustion engine with a lubrication system and with cylinders 2 in a row arrangement includes 1 integrated lubricant and coolant channels in the machine housing.
  • To the coolant channels include in particular one with a coolant pump 3 with am Machine housing 1 integrally arranged spiral housing 4 connected inlet channel 5 for a cooling jacket 6 of a cylinder 2 and one with a not shown Cylinder head in coolant-carrying connection, by means of a non shown thermostatic valve controllable short-circuit channel 7.
  • Thermostat valve is in a thermostat housing molded onto the spiral housing 4 8 arranged.
  • the machine housing 1 has integral devices for liquid Training supplies in a space-saving manner, being integral Hollow profiles designed fuel channels for an additional stiffening of the machine housing 1 serve.
  • the distribution section 14 is per cylinder 2 with the cooling jacket 6 and one directed towards the cylinder head Overflow opening 15 by means of a common wall 16 of the distributor section 14 and cooling jacket 6 penetrating riser 17 connected. Further serves one of the distributor section 14 and opposite the cooling jacket 6 limits in the machine housing 1 integrated chamber 18 the lubricant return.
  • the short-circuit channel 7 is in the machine housing 1 with an inlet opening 19 on the cylinder head side upstream of the thermostat housing 8 integrated and is via a by means of a short-circuit valve Thermostatic valve, not shown, controllable opening 20 with an other from the main valve of the thermostatic valve controllable mixing chamber 21 in Thermostat housing 8 in connection, the mixing chamber 21 via an inlet opening 22 in the flywheel-side limit 10 of the volute 4 in axial alignment with a radial pump wheel, not shown, as a plug-in unit trained drive of the coolant pump 3 is connected.
  • risers 17 for an effective cross flow in connectable cylinder head, not shown, dimensioned accordingly.
  • risers 17 in addition to achieve a certain Ejector effect on the coolant located in the cooling jacket 6 is arranged accordingly his.
  • An increased exchange of the coolant in the cooling jacket 6 can by additional transfer holes 23 in the common wall 16 of the distributor section 14 and cooling jacket 6 can be achieved, the cross sections of the transfer holes 23 larger in cross section with increasing distance from the coolant pump 3 are designed.
  • a with regard to simplified design of the machine housing 1 with manufacturing technology Advantage is further proposed according to the invention that at a machine housing 1 with a screw 24 on transverse walls 25 of the crankcase 26 connectable crankshaft bearing frame 27 with a Lubricant planer 28 each lubricant return chamber 18 with one in Direction of distributor section 14 of the inlet channel 5 arranged offset Lubricant drain channel 29 is connected to each drain channel 29 in sections in a the machine housing 1 on the outside between the distributor section 14 and the crankcase 26 vertically stiffening rib 30 and then the transverse wall 25 and a transverse web 31 of the bearing frame 27 between adjacent screw connections 24 extends continuously, each optionally drilled drain channel 29 outside or below the lubricant plane 28 opens into a lubricant pan 32.
  • the design described above of the drain channel 29 results in particular with the production by drilling a cost-effective production and also the advantage of deriving the returning lubricant past the connecting rod violin to a quiet room in the lubricant pan 32.
  • the laterally offset relative to the lubricant return chamber 18 according to the invention and between the screw connections 24 of the bearing frame 27 to the transverse wall 25 extending drain channel 29 advantageously allows that from the floor everyone Chamber 18 in the machine housing 1 each have a threaded bore 33 for one Cylinder head screw is arranged.
  • chamber 18 and drain channel 29 analog Arrangements can on the inlet side 34 of the internal combustion engine, not shown serve as part of a crankcase ventilation of the machine housing 1.
  • the Drain channels 29 each enclosing hollow ribs 30 on the crankcase side one on the machine housing 1 between the cylinder housing 35 and the crankcase 26 arranged longitudinal web 36 in one piece in connection, in which Longitudinal web 36 a lubricant pressure channel 37 is arranged, the connection of spray nozzles, not shown, for piston cooling.
  • the above-described design of the casting machine housing according to the invention 1 is advantageously suitable for a version made of a light metal alloy in thin-walled training.

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

Description

Die Erfindung bezieht sich nach dem Oberbegriff des Patentanspruches 1 auf ein Guß-Maschinengehäuse für eine zwangsumlaufgekühlte Brennkraftmaschine mit Schmiersystem, insbesondere mit Zylindern in Reihenanordnung, wobei im Maschinengehäuse Schmier- und Kühlmittelkanäle integriert sind, und letztere einen mit einer Kühlmittelpumpe mit am Maschinengehäuse einstückig angeordnetem Spiralgehäuse verbundenen Zulaufkanal für einen Kühlmantel eines Zylinders sowie einen mit einem Zylinderkopf in kühlmittelführender Verbindung stehenden, mittels eines Thermostatventils steuerbaren Kurzschlußkanal umfassen, und das Thermostatventil in einem an das Spiralgehäuse angeformten Thermostatgehäuse angeordnet ist.According to the preamble of claim 1, the invention relates to Cast machine housing for a forced-circulation cooled internal combustion engine with Lubrication system, especially with cylinders arranged in a row, with in the machine housing Lubricant and coolant channels are integrated, and the latter one with a coolant pump with a spiral housing arranged in one piece on the machine housing connected inlet channel for a cooling jacket of a cylinder and a with a cylinder head in coolant-carrying connection, by means of a Thermostat valve include controllable short-circuit channel, and the thermostatic valve is arranged in a thermostat housing molded onto the spiral housing.

Ein derartiges Guß-Maschinengehäuse ist aus der EP 0 505 346 B1 bekannt. Bei diesem bekannten Maschinengehäuse ist die mit einer Ölpumpe kombinierte Kühlmittelpumpe an einer Längsseite des Maschinengehäuses in erheblich ausladender Weise angeordnet, wodurch neben einem erhöhten Bauraumbedarf in nachteiliger Weise seitwärts gerichtete, relativ lange Kühlmittelkanäle gegeben sind, die wenig zu einer Versteifung des Maschinengehäuses beitragen. Such a cast machine housing is known from EP 0 505 346 B1. at this known machine housing is the coolant pump combined with an oil pump on one long side of the machine housing in considerably protruding Arranged way, which in addition to an increased space requirement in disadvantageous Way sideways, relatively long coolant channels are given that little contribute to stiffening the machine housing.

Der Erfindung liegt die Aufgabe zugrunde, ein gattungsgemäßes Guß-Maschinengehäuse mit integrierten Einrichtungen für flüssige Betriebsstoffe in kompakter Weise auszubilden, wobei als integrierte Hohlprofile gestaltete Betriebsstoff-Kanäle einer zusätzlichen Aussteifung des Maschinengehäuses dienen.The invention has for its object a generic casting machine housing with integrated facilities for liquid operating materials in a compact Form way, operating channels designed as integrated hollow profiles serve an additional stiffening of the machine housing.

Diese Aufgabe ist mit dem Patentanspruch 1 gelöst und zwar dadurch, daß bei einem Maschinengehäuse mit angegossenem Steuerschachtdeckel an diesem das Spiralgehäuse der Kühlmittelpumpe stirnseitig und zur Einlaßseite der Brennkraftmaschine derart versetzt angeordnet angeformt ist, daß das Thermostatgehäuse an der schwungradseitigen Begrenzung des Spiralgehäuses sowie am Maschinengehäuse angeformt ist und daß ferner an den vom Steuerschachtdeckel maschinenseitig begrenzten Austrittsstutzen des Spiralgehäuses ein über den Steuerschachtdeckel mit diesem in einteiliger Ausformung verbundener Abschnitt des Zulaufkanals angeschlossen ist, der in einstückiger Verbindung mit einem längsseitig am Maschinengehäuse auf der Auslaßseite der Brennkraftmaschine angeformten Verteiler-Abschnitt steht, der je Zylinder mit dem Kühlmantel und einer zylinderkopfseitig gerichteten Überströmöffnung mittels eines die gemeinsame Wandung von Verteiler-Abschnitt und Kühlmantel durchsetzenden Steigkanals verbunden ist, und wobei weiter eine vom Verteiler-Abschnitt und gegenüber dem Kühlmantel gesondert begrenzte Kammer als im Maschinengehäuse integrierte Kammer dem Schmiermittelrücklauf dient.This object is achieved with claim 1, namely in that a machine housing with a cast control cover on this Spiral housing of the coolant pump on the front and the inlet side of the internal combustion engine is formed so offset that the thermostat housing on the flywheel-side limitation of the volute casing and on the machine casing is integrally formed and that further on the machine side from the control shaft cover limited outlet connection of the volute casing over the control shaft cover with this section of the inlet channel connected in one-piece formation is connected, which is in one piece with a connection on the longitudinal side of the machine housing molded on the outlet side of the internal combustion engine section stands, the one with the cooling jacket and one on the cylinder head side directed overflow opening by means of a the common wall of the distributor section and cooling jacket penetrating riser is connected, and wherein further a separate from the distributor section and compared to the cooling jacket Chamber as the chamber integrated in the machine housing for the lubricant return serves.

Mit der erfindungsgemäßen Anordnung der Kühlmittelpumpe stimseitig an einem integrierten Steuerschachtdeckel ergibt sich in Verbindung mit der Anordnung eines ersten Zulaufkanal-Abschnittes auf dem Steuerschachtdeckel neben einer vorteilhaft wenig ausladenden Anordnung eine bezüglich Akustik bzw. Schwingungen des Steuerschachtdeckels vorteilhafte Aussteifung. Weiter ist mit der erfindungsgemäß am Spiralgehäuse der Kühlmittelpumpe vorgesehenen Anordnung des Thermostatgehäuses mit einstückiger Verbindung zum Maschinengehäuse zum einen in vorteilhafter Weise sichergestellt, daß das über den Steuerschachtdeckel hinausragende Spiralgehäuse frei von Schwingungen ist und daß andererseits ein Kurzschlußkanal in integrierter Anordnung gegeben ist mit dem Vorteil des Fortfalls zusätzlicher Leitungsmittel. Ferner ist mit dem längsseitig am Maschinengehäuse beispielsweise nahe der Anschlußfläche zu einem Zylinderkopf angeordneten Verteiler-Abschnitt des Zulaufkanals in Verbindung mit vertikal verlaufenden hohlen Rippen für Schmiermittel-Ablaufkanäle gemäß einem Teilmerkmal des Anspruches 4 sowie einem zwischen Zylindergehäuse und Kurbelgehäuse vorgesehenen Längssteg am Maschinengehäuse gemäß einem Teilmerkmal des Anspruches 6 ein vorteilhaft ausgesteiftes Maschinengehäuse in dünnwandiger Ausführung erzielt. Schließlich kann mit den dem Verteiler-Abschnitt des Zulaufkanals zugeordneten Steigkanälen eine intensive Querdurchströmung eines anschließbaren Zylinderkopfes sichergestellt sein, wobei die in der gemeinsamen Wandung von Verteiler-Abschnitt und Kühlmantel angeordneten Steigkanäle gemäß einem Teilmerkmal des Anspruches 3 zur Erzielung einer Ejektor-Wirkung auf das im Kühlmantel befindliche Kühlmittel entsprechend angeordnet sind. Ein Nachfluß an Kühlmittel erfolgt gegebenenfalls über zusätzliche Übertrittslöcher in der gemeinsamen Wandung von Verteiler-Abschnitt und Kühlmantel.With the arrangement of the coolant pump according to the invention on one end Integrated control shaft cover results in connection with the arrangement of a first inlet channel section on the control shaft cover in addition to an advantageous little protruding arrangement in terms of acoustics or vibrations of the Control shaft cover advantageous stiffening. Next is with the invention arrangement of the thermostat housing provided on the spiral housing of the coolant pump with one-piece connection to the machine housing on the one hand in an advantageous Way ensured that the protruding beyond the control shaft cover Spiral casing is free of vibrations and that on the other hand a short-circuit channel is given in an integrated arrangement with the advantage of eliminating additional Conduit means. Furthermore, with the long side of the machine housing, for example distributor section arranged near the connection surface to a cylinder head of the inlet channel in connection with vertically running hollow ribs for lubricant drainage channels according to a partial feature of claim 4 and a provided between the cylinder housing and crankcase longitudinal web on Machine housing according to a partial feature of claim 6 an advantageous stiffened machine housing in thin-walled design. Finally can with the riser channels assigned to the distributor section of the inlet channel an intensive cross flow through a connectable cylinder head Be sure to be in the common wall of the manifold section and cooling jacket arranged risers according to a partial feature of the Claim 3 to achieve an ejector effect on the located in the cooling jacket Coolants are arranged accordingly. An afterflow of coolant may occur via additional transfer holes in the common wall of Manifold section and cooling jacket.

Die erfindungsgemäße Gestaltung des Maschinengehäuses eignet sich insbesondere für eine Ausführung aus einer Leichtmetall-Legierung in dünnwandiger Ausbildung.The design of the machine housing according to the invention is particularly suitable for a version made of a light metal alloy with thin walls.

Weitere Ausgestaltungsmerkmale der Erfindung sind in den Unteransprüchen beschrieben.Further design features of the invention are described in the subclaims.

Die Erfindung ist anhand einer in der Zeichnung dargestellten Stirnansicht mit teilweise geschnittenem Maschinengehäuse beschrieben.The invention is partly based on an end view shown in the drawing cut machine housing described.

Ein Guß-Maschinengehäuse 1 für eine zwangsumlaufgekühlte, nicht gezeigte Brennkraftmaschine mit einem Schmiersystem und mit Zylindern 2 in Reihenanordnung umfaßt im Maschinengehäuse 1 integrierte Schmier- und Kühlmittelkanäle. Zu den Kühlmittelkanälen zählen insbesondere ein mit einer Kühlmittelpumpe 3 mit am Maschinengehäuse 1 einstückig angeordnetem Spiralgehäuse 4 verbundener Zulaufkanal 5 für einen Kühlmantel 6 eines Zylinders 2 sowie ein mit einem nicht gezeigten Zylinderkopf in kühlmittelführender Verbindung stehender, mittels eines nicht dargestellten Thermostatventils steuerbarer Kurzschlußkanal 7. Das nicht gezeigte Thermostatventil ist in einem an das Spiralgehäuse 4 angeformten Thermostatgehäuse 8 angeordnet.A cast machine housing 1 for a forced circulation cooled, not shown Internal combustion engine with a lubrication system and with cylinders 2 in a row arrangement includes 1 integrated lubricant and coolant channels in the machine housing. To the coolant channels include in particular one with a coolant pump 3 with am Machine housing 1 integrally arranged spiral housing 4 connected inlet channel 5 for a cooling jacket 6 of a cylinder 2 and one with a not shown Cylinder head in coolant-carrying connection, by means of a non shown thermostatic valve controllable short-circuit channel 7. The not shown Thermostat valve is in a thermostat housing molded onto the spiral housing 4 8 arranged.

Erfindungsgemäß ist das Maschinengehäuse 1 mit integralen Einrichtungen für flüssige Betriebsstoffe in bauraumsparender Weise auszubilden, wobei als integrale Hohlprofile gestaltete Betriebsstoffkanäle einer zusätzlichen Aussteifung des Maschinengehäuses 1 dienen.According to the invention, the machine housing 1 has integral devices for liquid Training supplies in a space-saving manner, being integral Hollow profiles designed fuel channels for an additional stiffening of the machine housing 1 serve.

Dies ist erfindungsgemäß dadurch erreicht, daß bei einem Maschinengehäuse 1 mit angegossenem Steuerschachtdeckel 9 an diesem das Spiralgehäuse 4 der Kühlmittelpumpe 3 stirnseitig und zur Einlaßseite 34 der nicht dargestellten Brennkraftmaschine derart versetzt angeordnet angeformt ist, daß das Thermostatgehäuse 8 an der schwungradseitigen Begrenzung 10 des Spiralgehäuses 4 sowie am Maschinengehäuse 1 angeformt ausgebildet ist. In weiterer erfindungsgemäßer Ausgestaltung ist an den vom Steuerschachtdeckel 9 maschinenseitig begrenzten Austrittsstutzen 11 des Spiralgehäuses 4 ein über den Steuerschachtdeckel 9 mit diesem in einteiliger Ausformung verbundener Abschnitt 12 des Zulaufkanals 5 angeschlossen, der in einstückiger Verbindung mit einem längsseitig am Maschinengehäuse 1 auf der Auslaßseite 13 der nicht dargestellten Brennkraftmaschine angeformten Verteiler-Abschnitt 14 des Zulaufkanals 5 steht. Der Verteiler-Abschnitt 14 ist je Zylinder 2 mit dem Kühlmantel 6 und einer zylinderkopfseitig gerichteten Überströmöffnung 15 mittels eines die gemeinsame Wandung 16 von Verteiler-Abschnitt 14 und Kühlmantel 6 durchsetzenden Steigkanals 17 verbunden. Weiter dient eine vom Verteiler-Abschnitt 14 und gegenüber dem Kühlmantel 6 gesondert begrenzt im Maschinengehäuse 1 integrierte Kammer 18 dem Schmiermittelrücklauf.This is achieved according to the invention in that with a machine housing 1 molded control shaft cover 9 on this the spiral housing 4 of the coolant pump 3 on the front and to the inlet side 34 of the internal combustion engine, not shown is formed so offset that the thermostat housing 8th on the flywheel-side limit 10 of the volute casing 4 and on the machine casing 1 is formed integrally. In a further embodiment according to the invention is on the outlet port delimited by the control shaft cover 9 on the machine side 11 of the volute 4 over the control shaft cover 9 with this Section 12 of the inlet duct 5 connected in one-piece formation, the one-piece connection with a long side on the machine housing 1 molded on the outlet side 13 of the internal combustion engine, not shown Distributor section 14 of the inlet channel 5 is. The distribution section 14 is per cylinder 2 with the cooling jacket 6 and one directed towards the cylinder head Overflow opening 15 by means of a common wall 16 of the distributor section 14 and cooling jacket 6 penetrating riser 17 connected. Further serves one of the distributor section 14 and opposite the cooling jacket 6 limits in the machine housing 1 integrated chamber 18 the lubricant return.

In weiterer vorteilhafter Ausgestaltung ist der Kurzschlußkanal 7 im Maschinengehäuse 1 mit einer zylinderkopfseitigen Zulauföffnung 19 stromauf des Thermostatgehäuses 8 integriert und steht über eine mittels eines Kurzschlußventils des nicht gezeigten Thermostatventils steuerbare Durchbrechung 20 mit einer andererseits vom Hauptventil des Thermostatventils steuerbaren Mischkammer 21 im Thermostatgehäuse 8 in Verbindung, wobei die Mischkammer 21 über eine Zulauföffnung 22 in der schwungradseitigen Begrenzung 10 des Spiralgehäuses 4 in axialer Ausrichtung mit einem nicht gezeigten Radialpumpenrad eines als Einsteckeinheit ausgebildeten Laufwerkes der Kühlmittelpumpe 3 in Verbindung steht.In a further advantageous embodiment, the short-circuit channel 7 is in the machine housing 1 with an inlet opening 19 on the cylinder head side upstream of the thermostat housing 8 integrated and is via a by means of a short-circuit valve Thermostatic valve, not shown, controllable opening 20 with an other from the main valve of the thermostatic valve controllable mixing chamber 21 in Thermostat housing 8 in connection, the mixing chamber 21 via an inlet opening 22 in the flywheel-side limit 10 of the volute 4 in axial alignment with a radial pump wheel, not shown, as a plug-in unit trained drive of the coolant pump 3 is connected.

Für ein insbesondere mehrzylindriges Maschinengehäuse 1 sind die vom Verteiler-Abschnitt 14 des Zulaufkanals 5 zu den zylinderkopfseitig gerichteten Überströmöffnungen 15 angeordneten Steigkanäle 17 für eine wirksame Querströmung im anschließbaren, nicht gezeigten Zylinderkopf entsprechend bemessen. Vorteilhafterweise können diese Steigkanäle 17 zusätzlich zur Erzielung einer gewissen Ejektor-Wirkung auf das im Kühlmantel 6 befindliche Kühlmittel entsprechend angeordnet sein. Ein gesteigerter Austausch des Kühlmittels im Kühlmantel 6 kann durch zusätzliche Übertrittslöcher 23 in der gemeinsamen Wandung 16 von Verteiler-Abschnitt 14 und Kühlmantel 6 erzielt sein, wobei die Querschnitte der Übertrittslöcher 23 mit zunehmendem Abstand von der Kühlmittelpumpe 3 im Querschnitt größer gestaltet sind.For a multi-cylinder machine housing 1, in particular, are from the distributor section 14 of the inlet channel 5 to the overflow openings directed towards the cylinder head 15 arranged risers 17 for an effective cross flow in connectable cylinder head, not shown, dimensioned accordingly. advantageously, can these risers 17 in addition to achieve a certain Ejector effect on the coolant located in the cooling jacket 6 is arranged accordingly his. An increased exchange of the coolant in the cooling jacket 6 can by additional transfer holes 23 in the common wall 16 of the distributor section 14 and cooling jacket 6 can be achieved, the cross sections of the transfer holes 23 larger in cross section with increasing distance from the coolant pump 3 are designed.

Eine hinsichtlich vereinfachter Ausbildung des Maschinengehäuses 1 mit fertigungstechnischem Vorteil wird erfindungsgemäß weiter vorgeschlagen, daß bei einem Maschinengehäuse 1 mit einem über Verschraubungen 24 an Querwänden 25 des Kurbelgehäuses 26 anschließbaren Kurbelwellen-Lagerrahmen 27 mit einem Schmiermittel-Hobel 28 jede Schmiermittelrücklauf-Kammer 18 mit einem derart in Richtung Verteiler-Abschnitt 14 des Zulaufkanals 5 versetzt angeordneten Schmiermittel-Ablaufkanal 29 verbunden ist, daß jeder Ablaufkanal 29 abschnittsweise in einer das Maschinengehäuse 1 außenseitig zwischen dem Verteiler-Abschnitt 14 und dem Kurbelgehäuse 26 vertikal versteifenden Rippe 30 verläuft und anschließend die Querwand 25 und einen Quersteg 31 des Lagerrahmens 27 zwischen benachbarten Verschraubungen 24 verlaufend durchsetzt, wobei jeder gegebenenfalls gebohrte Ablaufkanal 29 außerhalb bzw. unterhalb des Schmiermittel-Hobels 28 in eine Schmiermittelwanne 32 mündet. Die vorbeschriebene Ausgestaltung des Ablaufkanals 29 ergibt insbesondere mit der Herstellung durch Bohren eine kostengünstige Fertigung und darüber hinaus den Vorteil der Ableitung des rücklaufenden Schmiermittels vorbei an der Pleuelgeige in einen beruhigten Raum in der Schmiermittelwanne 32.A with regard to simplified design of the machine housing 1 with manufacturing technology Advantage is further proposed according to the invention that at a machine housing 1 with a screw 24 on transverse walls 25 of the crankcase 26 connectable crankshaft bearing frame 27 with a Lubricant planer 28 each lubricant return chamber 18 with one in Direction of distributor section 14 of the inlet channel 5 arranged offset Lubricant drain channel 29 is connected to each drain channel 29 in sections in a the machine housing 1 on the outside between the distributor section 14 and the crankcase 26 vertically stiffening rib 30 and then the transverse wall 25 and a transverse web 31 of the bearing frame 27 between adjacent screw connections 24 extends continuously, each optionally drilled drain channel 29 outside or below the lubricant plane 28 opens into a lubricant pan 32. The design described above of the drain channel 29 results in particular with the production by drilling a cost-effective production and also the advantage of deriving the returning lubricant past the connecting rod violin to a quiet room in the lubricant pan 32.

Der erfindungsgemäß relativ zur Schmiermittelrücklauf-Kammer 18 seitlich versetzte und zwischen den Verschraubungen 24 des Lagerrahmens 27 mit der Querwand 25 verlaufende Ablaufkanal 29 ermöglicht in vorteilhafter Weise, daß vom Boden jeder Kammer 18 aus im Maschinengehäuse 1 jeweils eine Gewindebohrung 33 für eine Zylinderkopfschraube angeordnet ist.The laterally offset relative to the lubricant return chamber 18 according to the invention and between the screw connections 24 of the bearing frame 27 to the transverse wall 25 extending drain channel 29 advantageously allows that from the floor everyone Chamber 18 in the machine housing 1 each have a threaded bore 33 for one Cylinder head screw is arranged.

Den vorbeschriebenen Anordnungen von Kammer 18 und Ablaufkanal 29 analoge Anordnungen können auf der Einlaßseite 34 der nicht dargestellten Brennkraftmaschine als Teil einer Kurbelgehäuseentlüftung des Maschinengehäuses 1 dienen.The above-described arrangements of chamber 18 and drain channel 29 analog Arrangements can on the inlet side 34 of the internal combustion engine, not shown serve as part of a crankcase ventilation of the machine housing 1.

Zur weiteren Steigerung der Steifigkeit des Maschinengehäuses 1 stehen die die Ablaufkanäle 29 jeweils umschließenden hohlen Rippen 30 kurbelgehäuseseitig mit einem am Maschinengehäuse 1 zwischen dem Zylindergehäuse 35 und dem Kurbelgehäuse 26 angeordneten Längssteg 36 einstückig in Verbindung, wobei in dem Längssteg 36 ein Schmiermittel-Druckkanal 37 angeordnet ist, der dem Anschluß von nicht gezeigten Spritzdüsen zur Kolbenkühlung dient.To further increase the rigidity of the machine housing 1, the Drain channels 29 each enclosing hollow ribs 30 on the crankcase side one on the machine housing 1 between the cylinder housing 35 and the crankcase 26 arranged longitudinal web 36 in one piece in connection, in which Longitudinal web 36 a lubricant pressure channel 37 is arranged, the connection of spray nozzles, not shown, for piston cooling.

Die vorbeschriebene, erfindungsgemäße Gestaltung des Guß-Maschinengehäuses 1 eignet sich in vorteilhafter Weise für eine Ausführung aus einer Leichtmetall-Legierung in dünnwandiger Ausbildung.The above-described design of the casting machine housing according to the invention 1 is advantageously suitable for a version made of a light metal alloy in thin-walled training.

Claims (7)

  1. A cast engine casing (1) for a forced circulation cooling internal combustion engine with a lubricating cylinder, especially with cylinders (2) in a line,
    wherein lubricating and coolant ducts are incorporated in the engine casing (1) and
    comprise an inlet duct (5) for a cooling jacket (6) of a cylinder (2), the duct being connected to a coolant pump (3) with a spiral casing (4) disposed integrally on the engine casing (1), and
    a short-circuit duct (7) controllable by a thermostat valve and connected to a cylinder head for the purpose of conveying coolant, and
    the thermostat valve is disposed in a casing (8) integrally formed on the spiral casing (4),
    characterised in that
    in the case of an engine casing (1) with an integrally cast control shaft cover (9), the spiral casing (4) of the coolant pump (3) is integrally formed on the end of the cover and is offset towards the inlet side (34) of the engine such that
    the thermostat casing (8) is integrally formed on the engine casing (1) and on the boundary (10) of the spiral casing (4) on the flywheel side, and
    a portion (12) of the inlet duct (5) formed in one piece with the control shaft cover (9) is connected thereby to outlet nozzles (11) of the spiral casing (4) bounded on the engine side by the control shaft cover (9),
    the portion (9) being integrally connected to a distributor portion (14) integrally formed on the outlet side (13) of the engine on the longitudinal side of the engine casing (1),
    the portion (14), in the case of each cylinder (2), being connected to the cooling jacket (6) and to an overflow opening (15) on the cylinder head side via a rising duct (17) through the common wall (16) of the distributor portion (14) and the cooling jacket (6), wherein
    a chamber (18) incorporated in the engine casing (1), bounded by the distributor portion (14) and separated from the cooling jacket (6) is used for recycling the lubricant.
  2. An engine casing according to claim 1,
    characterised in that
    the short-circuit duct (7) in the engine casing (1) is incorporated in an inlet opening (19) on the cylinder head side upstream of the thermostat casing (8), and
    is connected via an aperture (20) controllable by a short-circuit valve on the thermostat valve to a mixing chamber (21) in the thermostat casing (8) controllable by the main valve of the thermostat valve, wherein
    the mixing chamber (21), via an inlet opening (22) in the boundary (10) of the spiral casing (4) on the flywheel side, is connected in the axial direction to a radial pump wheel of a mechanism, in the form of a plugin unit, of the coolant pump (3).
  3. An engine casing according to claims 1 and 2, characterised in that
    in the case of a multi-cylinder engine casing (1) the rising ducts (17) from the distributor portion (14) of the inlet duct (5) to the overflow openings (15) directed towards the cylinder head are dimensioned for an effective transverse flow in the connectable cylinder head, and
    are disposed so as to obtain an ejector effect on the coolant in the cooling jacket (6), wherein
    if required, additional overflow holes (23) are provided in the common wall (16) of the distributor portion (14) and the cooling jacket (6) and have cross-sections which differ appropriately over the length of the distributor portion (14).
  4. An engine casing according to any of claims 1 to 3, characterised in that
    in the case of a machine casing (1) with a crankshaft bearing frame (27) connectable by screws (24) to transverse walls (25) of the crankcase (26) and with a lubricant leveller (28), each lubricant return chamber (18) is connected to a lubricant discharge duct (29) offset towards the distributor portion (14) of the inlet duct (5) such that
    portions of each outlet duct (29) run in a rib (30) which vertically stiffens the engine casing (1) on the outside between the distributor portion (14) and the crankcase (26) and
    then extends through the transverse wall (25) and a transverse web (31) of the bearing frame (27) between neighbouring screws (24), wherein
    each outlet duct (29), drilled as required, opens outside or underneath the lubricant leveller (28) into a lubricant sump (32).
  5. An engine casing according to claim 4, characterised in that a threaded bore (33) for each cylinder head screw is disposed in the engine casing (1) and extends from the outlet duct (29) at a distance inwards from the end of each chamber (18).
  6. An engine casing according to claims 4 and 5, characterised in that
    the hollow ribs (30) on the crankcase side are integrally connected to a longitudinal web (36) disposed on the engine casing (1) between the cylinder casing (35) and the crankcase (26), and
    a lubricant pressure duct (37) is disposed in the longitudinal web (36) and
    is used for connecting injection nozzles for cooling the piston.
  7. An engine casing according to any of claims 1 to 6, characterised in that it is made of a light metal alloy.
EP99119597A 1998-11-06 1999-10-02 Cast machine housing for forced cooled engines with a lubricating system, especially with cylinders in line Expired - Lifetime EP0999353B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19851232A DE19851232A1 (en) 1998-11-06 1998-11-06 Cast machine housing for a forced-circulation internal combustion engine with a lubrication system, in particular with cylinders arranged in a row
DE19851232 1998-11-06

Publications (2)

Publication Number Publication Date
EP0999353A1 EP0999353A1 (en) 2000-05-10
EP0999353B1 true EP0999353B1 (en) 2003-07-23

Family

ID=7886934

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99119597A Expired - Lifetime EP0999353B1 (en) 1998-11-06 1999-10-02 Cast machine housing for forced cooled engines with a lubricating system, especially with cylinders in line

Country Status (3)

Country Link
EP (1) EP0999353B1 (en)
DE (2) DE19851232A1 (en)
ES (1) ES2204044T3 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10026113B4 (en) * 2000-05-26 2013-07-04 GM Global Technology Operations LLC (n. d. Ges. d. Staates Delaware) Internal combustion engine with an oil deflector arranged between the crankcase and the oil pan
DE102010054084B4 (en) 2010-12-10 2023-04-06 Volkswagen Aktiengesellschaft coolant pump
CN102345724A (en) * 2011-09-15 2012-02-08 三一重工股份有限公司 Synchronizer forced lubricating system, method and transmission
FR3055150A1 (en) * 2016-08-16 2018-02-23 Renault S.A.S EXTERNAL CONDUIT OF AN OUTPUT OF A VOLUTE OF A PUMP WITH A HEAT PUMP FLUID OF A THERMAL MOTOR OF A VEHICLE
CN110966114B (en) * 2019-10-29 2020-11-20 潍柴动力股份有限公司 Gear chamber and engine with same

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61160510A (en) * 1984-12-14 1986-07-21 Honda Motor Co Ltd Lubrication oil passage device in water-cooled internal-combustion engine
DE3633261C1 (en) * 1986-09-30 1987-05-21 Bayerische Motoren Werke Ag Cast machine housing for liquid-cooled internal combustion engines with a V-shaped cylinder arrangement
JP2505566Y2 (en) * 1987-11-26 1996-07-31 日産自動車株式会社 Water pump device
DE3837253A1 (en) * 1988-11-03 1990-05-10 Bayerische Motoren Werke Ag V-engine
AT404164B (en) * 1991-03-20 1998-09-25 Avl Verbrennungskraft Messtech CYLINDER CRANKCASE OF AN INTERNAL COMBUSTION ENGINE WITH WATER COOLING
US5647315A (en) * 1994-10-07 1997-07-15 Yamaha Hatsudoki Kabushiki Kaisha Lubricating arrangement for engine

Also Published As

Publication number Publication date
DE59906344D1 (en) 2003-08-28
ES2204044T3 (en) 2004-04-16
DE19851232A1 (en) 2000-05-11
EP0999353A1 (en) 2000-05-10

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