EP0637681B1 - Fluid circuit for an internal combustion engine - Google Patents

Fluid circuit for an internal combustion engine Download PDF

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Publication number
EP0637681B1
EP0637681B1 EP94110167A EP94110167A EP0637681B1 EP 0637681 B1 EP0637681 B1 EP 0637681B1 EP 94110167 A EP94110167 A EP 94110167A EP 94110167 A EP94110167 A EP 94110167A EP 0637681 B1 EP0637681 B1 EP 0637681B1
Authority
EP
European Patent Office
Prior art keywords
pump
housing
cover
fluid
fluid circuit
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
EP94110167A
Other languages
German (de)
French (fr)
Other versions
EP0637681A1 (en
Inventor
Josef Dipl.-Ing. Rössle
Ernst-Wilhelm Dipl.-Ing. Hufendiek
Johannes Dipl.-Ing. Werner
Walter Dipl.-Ing. Kerschbaum
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.)
Daimler Benz AG
Original Assignee
Daimler Benz AG
Mercedes Benz 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 Daimler Benz AG, Mercedes Benz AG filed Critical Daimler Benz AG
Publication of EP0637681A1 publication Critical patent/EP0637681A1/en
Application granted granted Critical
Publication of EP0637681B1 publication Critical patent/EP0637681B1/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
    • 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
    • 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
    • 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
    • F01P3/00—Liquid cooling
    • F01P3/22—Liquid cooling characterised by evaporation and condensation of coolant in closed cycles; characterised by the coolant reaching higher temperatures than normal atmospheric boiling-point
    • F01P2003/2278—Heat pipes
    • 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
    • F01P3/22—Liquid cooling characterised by evaporation and condensation of coolant in closed cycles; characterised by the coolant reaching higher temperatures than normal atmospheric boiling-point
    • F01P2003/2292—Liquid cooling characterised by evaporation and condensation of coolant in closed cycles; characterised by the coolant reaching higher temperatures than normal atmospheric boiling-point with thermostatically controlled by-pass
    • 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
    • F01P2060/00—Cooling circuits using auxiliaries
    • F01P2060/04—Lubricant cooler

Definitions

  • the invention relates to a fluid guide for an internal combustion engine according to the features mentioned in the preamble of claim 1.
  • Such a liquid guide is known from DE 25 02 034 A1.
  • it is considered disadvantageous to arrange an oil pump and a front cover as individual parts on the internal combustion engine housing, since when the oil is pumped from the oil pump into the channels of the front cover, the connection between the two is difficult to seal and oil leakage occurs.
  • this document suggests a common housing for the oil pump and front cover.
  • the invention has for its object to achieve a secure seal for the liquid with a generic liquid guide even with a separate design of the liquid pump and the front cover.
  • the liquid pump and the front cover are designed as individual parts with the advantages of separate interchangeability and the possibility of using different liquid pumps without the necessity of a seal which is difficult to implement directly between the liquid pump and the front cover.
  • the tunnel-like connection inside: half of the internal combustion engine housing between the liquid pump and the cover channel allows separate, easy-to-seal separating surfaces between the liquid pump and the front cover with the internal combustion engine housing, which run alongside one another transversely above this tunnel-like connection.
  • the embodiment according to claim 2 enables a particularly cost-effective interchangeability of a coolant pump, since only the movable parts exposed to wear and the pump housing part carrying them are designed separately from the machine housing.
  • Coolant for cooling an internal combustion engine is conveyed by a pump wheel 1 of a coolant pump 2, which is driven via a pulley 3 and is mounted in a pump housing cover 4 by means of a shaft 5.
  • the coolant pump 2 is designed in a spiral construction with a spiral channel 7 located in the machine housing 6 of the internal combustion engine, which is covered by the pump housing cover 4, which is screwed onto the front of the machine housing 6.
  • the coolant is conveyed out of the spiral duct 7 into a cover duct 8, which is formed by the machine housing 6 and an end cover 9 screwed to the end face of the latter.
  • a cover duct 8 which is formed by the machine housing 6 and an end cover 9 screwed to the end face of the latter.
  • an oil cooler 10 screwed onto the end cover 9 and partially protruding into the front-side machine housing 6, is arranged for cooling lubricating oil by the coolant, which is then guided from the oil cooler 10 into a longitudinal channel 11 and to the individual cylinders 12 in the machine housing 6.
  • Spiral channel 7 and cover channel 8 are hydraulically connected to one another by a connecting channel 13, which lies inside the machine housing 6 in a tunnel-like manner.
  • the connecting duct 13 is delimited by a wall part 14 as part of the machine housing 6, which carries the mutually separated sealing surfaces 15, 16 both for the pump housing cover 4 and for the end cover 9. This avoids a difficult seal to be realized between the pump housing cover 4 and the end cover 9, at the same time the pump housing cover 4 together with the pump wheel 1 can be easily replaced.
  • the mouth 17 of the connecting channel 13 in the cover channel 8 lies approximately in the parting plane 18 between the machine housing 6 and the end cover 9.
  • the flow in this area is determined by a Curved rib 19 of the machine housing 6 deflected so that the direction of flow in the area of the mouth 17 is approximately perpendicular to the parting plane 18 and thus a short circuit flow in the longitudinal channel 11 is largely prevented.
  • the coolant then flows through the oil cooler 10 with two deflections, partly in its longitudinal and partly in its transverse direction, so that a good cooling effect is ensured in the latter.

Description

Die Erfindung bezieht sich auf eine Flüssigkeitsführung für eine Brennkraftmaschine gemäß den im Oberbegriff des Patentanspruchs 1 genannten Merkmalen.The invention relates to a fluid guide for an internal combustion engine according to the features mentioned in the preamble of claim 1.

Eine derartige Flüssigkeitsführung ist aus der DE 25 02 034 A1 bekannt. In dieser Schrift wird es als nachteilig angesehen, eine ölpumpe und einen Stirndeckel als Einzelteile am Brennkraftmaschinengehäuse anzuordnen, da bei einer Förderung des öls von der Ölpumpe in die Kanäle des Stirndeckels die Verbindung zwischen den beiden schwierig abzudichten ist und eine Ölleckage eintritt. Als Abhilfe schlägt diese Schrift ein gemeinsames Gehäuse für Ölpumpe und Stirndeckel vor. Hierdurch ergeben sich jedoch die Nachteile, daß ein Austausch der Pumpe nur gemeinsam mit dem Stirndeckel möglich ist und die Verwendung unterschiedlicher Pumpen verhindert wird.Such a liquid guide is known from DE 25 02 034 A1. In this document, it is considered disadvantageous to arrange an oil pump and a front cover as individual parts on the internal combustion engine housing, since when the oil is pumped from the oil pump into the channels of the front cover, the connection between the two is difficult to seal and oil leakage occurs. As a remedy, this document suggests a common housing for the oil pump and front cover. However, this results in the disadvantages that the pump can only be replaced together with the end cover and the use of different pumps is prevented.

Der Erfindung liegt die Aufgabe zugrunde, bei einer gattungsgemäßen Flüssigkeitsführung eine sichere Abdichtung für die Flüssigkeit auch bei einer getrennten Ausbildung von Flüssigkeitspumpe und Stirndeckel zu erreichen.The invention has for its object to achieve a secure seal for the liquid with a generic liquid guide even with a separate design of the liquid pump and the front cover.

Diese Aufgabe ist bei einer gattungsgemäßen Flüssigkeitsführung durch die kennzeichnenden Merkmale des Patentanspruchs 1 gelöst.This object is achieved in a generic liquid guide by the characterizing features of claim 1.

Bei der erfindungsgemäßen Flüssigkeitsführung sind die Flüssigkeitspumpe und der Stirndeckel als Einzelteile ausgebildet mit den Vorteilen einer getrennten Austauschbarkeit und der Möglichkeit einer Verwendung unterschiedlicher Flüssigkeitspumpen, ohne daß sich die Notwendigkeit einer schwierig zu verwirklichenden Abdichtung unmittelbar zwischen Flüssigkeitspumpe und Stirndeckel ergibt. Die tunnelartige Verbindung inne:halb des Brennkraftmaschinengehäuses zwischen der Flüssigkeitspumpe und dem Deckelkanal läßt getrennte, leicht abzudichtende Trennflächen der Flüssigkeitspumpe und des Stirndekkels mit dem Brennkraftmaschinengehäuse zu, die nebeneinander quer oberhalb dieser tunnelartigen Verbindung verlaufen.In the liquid guide according to the invention, the liquid pump and the front cover are designed as individual parts with the advantages of separate interchangeability and the possibility of using different liquid pumps without the necessity of a seal which is difficult to implement directly between the liquid pump and the front cover. The tunnel-like connection inside: half of the internal combustion engine housing between the liquid pump and the cover channel allows separate, easy-to-seal separating surfaces between the liquid pump and the front cover with the internal combustion engine housing, which run alongside one another transversely above this tunnel-like connection.

Die Ausführung gemäß dem Patentanspruch 2 ermöglicht eine besonders kostengünstige Austauschbarkeit einer Kühlmittelpumpe, da lediglich die einem Verschleiß ausgesetzten beweglichen Teile und das diese tragende Pumpengehäuseteil getrennt vom Maschinengehäuse ausgeführt sind.The embodiment according to claim 2 enables a particularly cost-effective interchangeability of a coolant pump, since only the movable parts exposed to wear and the pump housing part carrying them are designed separately from the machine housing.

Im Patentanspruch 3 ist eine neben der Weiterleitung der Flüssigkeit zusätzliche Nutzung des Deckelkanals als Aufnahme eines Ölkühlers angegeben, wobei in den Ansprüchen 4 und 5 dessen besonders günstige Anordnung und Durchströmung dargestellt ist.In claim 3, in addition to the forwarding of the liquid, additional use of the cover channel for receiving an oil cooler is specified, claims 4 and 5 depicting its particularly favorable arrangement and flow.

Im folgenden wird die Erfindung anhand eines in der Zeichnung dargestellten Ausführungsbeispiels näher erläutert. Dabei zeigt:

Fig. 1
eine Teil-Stirnansicht eines Brennkraftmaschinengehäuses im Bereich einer Kühlmittelpumpe und
Fig. 2
einen Schnitt durch das Maschinengehäuse nach der Linie II-II der Fig. 1 mit zugehörigem Pumpengehäuse und Stirndeckel.
The invention is explained in more detail below with reference to an embodiment shown in the drawing. It shows:
Fig. 1
a partial front view of an internal combustion engine housing in the area of a coolant pump and
Fig. 2
a section through the machine housing along the line II-II of FIG. 1 with the associated pump housing and end cover.

Kühlmittel zur Kühlung einer Brennkraftmaschine wird von einem Pumpenrad 1 einer Kühlmittelpumpe 2 gefördert, das über eine Riemenscheibe 3 angetrieben wird und in einem Pumpengehäusedeckel 4 mittels einer Welle 5 gelagert ist. Die Kühlmittelpumpe 2 ist in Spiralbauweise ausgeführt mit im Maschinengehäuse 6 der Brennkraftmaschine gelegenem Spiralkanal 7, der durch den Pumpengehäusedeckel 4 abgedeckt ist, der stirnseitig an das Maschinengehäuse 6 angeschraubt ist.Coolant for cooling an internal combustion engine is conveyed by a pump wheel 1 of a coolant pump 2, which is driven via a pulley 3 and is mounted in a pump housing cover 4 by means of a shaft 5. The coolant pump 2 is designed in a spiral construction with a spiral channel 7 located in the machine housing 6 of the internal combustion engine, which is covered by the pump housing cover 4, which is screwed onto the front of the machine housing 6.

Das Kühlmittel wird aus dem Spiralkanal 7 in einen Deckelkanal 8 gefördert, der durch das Maschinengehäuse 6 und einen stirnseitig an diesem angeschraubten Stirndeckel 9 gebildet wird. Im Deckelkanal 8 ist ein am Stirndeckel 9 angeschraubter, in das stirnseitige Maschinengehäuse 6 teilweise hineinragender Ölkühler 10 zur Kühlung von Schmieröl durch das Kühlmittel angeordnet, das dann aus dem Ölkühler 10 in einen Längskanal 11 und zu den einzelnen Zylindern 12 im Maschinengehäuse 6 geführt wird.The coolant is conveyed out of the spiral duct 7 into a cover duct 8, which is formed by the machine housing 6 and an end cover 9 screwed to the end face of the latter. In the cover channel 8, an oil cooler 10, screwed onto the end cover 9 and partially protruding into the front-side machine housing 6, is arranged for cooling lubricating oil by the coolant, which is then guided from the oil cooler 10 into a longitudinal channel 11 and to the individual cylinders 12 in the machine housing 6.

Spiralkanal 7 und Deckelkanal 8 sind durch einen Verbindungskanal 13 hydraulisch miteinander verbunden, der tunnelartig innerhalb des Maschinengehäuses 6 liegt. Zur Stirnseite der Brennkraftmaschine hin wird der Verbindungskanal 13 durch ein Wandteil 14 als Teil des Maschinengehäuses 6 begrenzt, der die voneinander getrennten Dichtflächen 15, 16 sowohl für den Pumpengehäusedeckel 4 als auch für den Stirndeckel 9 trägt. Damit wird eine schwierig zu verwirklichende unmittelbare Abdichtung zwischen Pumpengehäusedeckel 4 und Stirndeckel 9 vermieden, gleichzeitig kann der Pumpengehäusedeckel 4 mitsamt dem Pumpenrad 1 leicht ausgetauscht werden.Spiral channel 7 and cover channel 8 are hydraulically connected to one another by a connecting channel 13, which lies inside the machine housing 6 in a tunnel-like manner. Towards the front of the internal combustion engine, the connecting duct 13 is delimited by a wall part 14 as part of the machine housing 6, which carries the mutually separated sealing surfaces 15, 16 both for the pump housing cover 4 and for the end cover 9. This avoids a difficult seal to be realized between the pump housing cover 4 and the end cover 9, at the same time the pump housing cover 4 together with the pump wheel 1 can be easily replaced.

Die Mündung 17 des Verbindungskanal 13 in den Deckelkanal 8 liegt etwa in der Trennebene 18 zwischen Maschinengehäuse 6 und Stirndeckel 9. Die Strömung in diesem Bereich wird durch eine gekrümmte Rippe 19 des Maschinengehäuses 6 so umgelenkt, daß die Strömungsrichtung im Bereich der Mündung 17 etwa senkrecht zur Trennebene 18 liegt und damit eine Kurzschlußströmung in den Längskanal 11 weitgehend verhindert wird. Das Kühlmittel durchströmt anschließend mit zweimaliger Umlenkung den Ölkühler 10 teils in dessen Längs- und teils in dessen Querrichtung, so daß eine gute Kühlwirkung in diesem gewährleistet ist.The mouth 17 of the connecting channel 13 in the cover channel 8 lies approximately in the parting plane 18 between the machine housing 6 and the end cover 9. The flow in this area is determined by a Curved rib 19 of the machine housing 6 deflected so that the direction of flow in the area of the mouth 17 is approximately perpendicular to the parting plane 18 and thus a short circuit flow in the longitudinal channel 11 is largely prevented. The coolant then flows through the oil cooler 10 with two deflections, partly in its longitudinal and partly in its transverse direction, so that a good cooling effect is ensured in the latter.

Claims (5)

  1. Fluid circuit for an internal combustion engine having an engine housing, which bears an end cover on an end face and a fluid pump with a pump housing, from which the pumped fluid flows through a cover passage of the end cover,
    characterised in that
    a tunnel-like connecting passage (13) is arranged in the engine housing (6), having a port (7) to the fluid pump (2) on one side and a port (17) to the cover passage (8) on the other, and separate sealing faces (15, 16) between the pump housing (4) and the engine housing (6) on the one hand and between the end cover (9) and the engine housing (6) on the other extend above the connecting passage (13) between the two ports thereof.
  2. Fluid circuit as claimed in claim 1,
    characterised in that
    the fluid pump (2) is a coolant pump of spiral construction, the spiral housing of which is constructed through the engine housing (6).
  3. Fluid circuit as claimed in claim 1 or 2,
    characterised in that
    a fluid-cooled oil cooler (10) is arranged in the cover passage (8).
  4. Fluid circuit as claimed in claim 3,
    characterised in that
    the oil cooler (10) is secured to the end cover (9) and extends to a certain point at the end face into the engine housing (6).
  5. Fluid circuit as claimed in claim 3 or 4,
    characterised in that
    the coolant delivered by the fluid pump (2) flows partially longitudinally and partially transversely through the oil cooler (10), so that the flow is doubly deflected.
EP94110167A 1993-08-04 1994-06-30 Fluid circuit for an internal combustion engine Expired - Lifetime EP0637681B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4326158A DE4326158C2 (en) 1993-08-04 1993-08-04 Liquid guidance for an internal combustion engine
DE4326158 1993-08-04

Publications (2)

Publication Number Publication Date
EP0637681A1 EP0637681A1 (en) 1995-02-08
EP0637681B1 true EP0637681B1 (en) 1996-11-27

Family

ID=6494434

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94110167A Expired - Lifetime EP0637681B1 (en) 1993-08-04 1994-06-30 Fluid circuit for an internal combustion engine

Country Status (2)

Country Link
EP (1) EP0637681B1 (en)
DE (2) DE4326158C2 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10018046A1 (en) * 2000-04-12 2001-11-29 Volkswagen Ag Heat exchanger with a housing having a housing cover
DE10021526C2 (en) * 2000-05-03 2002-07-18 Porsche Ag Arrangement for cooling a multi-cylinder internal combustion engine
DE10121063A1 (en) * 2001-04-28 2002-10-31 Bayerische Motoren Werke Ag Water-cooled cylinder head for an internal combustion engine
DE102013113822B4 (en) * 2013-12-11 2022-02-24 Dr. Ing. H.C. F. Porsche Aktiengesellschaft combustion engine
CN104865074B (en) * 2015-05-29 2017-05-31 安徽江淮汽车集团股份有限公司 A kind of water thermostat of Engine Block Test
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
JP6830429B2 (en) * 2017-12-15 2021-02-17 ヤンマーパワーテクノロジー株式会社 engine

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB474336A (en) * 1936-07-09 1937-10-29 Ford Motor Co Improvements in and relating to circulating pumps for the cooling water of internal combustion engines
DE933902C (en) * 1952-11-23 1955-10-06 Kaelble Gmbh C Liquid-cooled internal combustion engine
CS169208B1 (en) * 1974-01-24 1976-07-29
JP2562842B2 (en) * 1990-05-01 1996-12-11 日産自動車株式会社 Chain chamber structure of internal combustion engine
US5216984A (en) * 1991-07-26 1993-06-08 Nissan Motor Co., Ltd. V-type internal combustion engine with improved water pump driving arrangement
DE4211896C2 (en) * 1992-04-09 1994-07-28 Daimler Benz Ag Housing cover for an internal combustion engine

Also Published As

Publication number Publication date
DE59401128D1 (en) 1997-01-09
EP0637681A1 (en) 1995-02-08
DE4326158C2 (en) 1995-05-11
DE4326158A1 (en) 1995-02-09

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