EP0464796A1 - Belt drive of an internal combustion engine - Google Patents

Belt drive of an internal combustion engine Download PDF

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Publication number
EP0464796A1
EP0464796A1 EP91111034A EP91111034A EP0464796A1 EP 0464796 A1 EP0464796 A1 EP 0464796A1 EP 91111034 A EP91111034 A EP 91111034A EP 91111034 A EP91111034 A EP 91111034A EP 0464796 A1 EP0464796 A1 EP 0464796A1
Authority
EP
European Patent Office
Prior art keywords
combustion engine
belt
belt drive
cooling
cooling fan
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
EP91111034A
Other languages
German (de)
French (fr)
Other versions
EP0464796B1 (en
Inventor
Werner Lemme
Lothar Bauer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kloeckner Humboldt Deutz AG
Original Assignee
Kloeckner Humboldt Deutz AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kloeckner Humboldt Deutz AG filed Critical Kloeckner Humboldt Deutz AG
Priority to DE59103085T priority Critical patent/DE59103085D1/en
Publication of EP0464796A1 publication Critical patent/EP0464796A1/en
Application granted granted Critical
Publication of EP0464796B1 publication Critical patent/EP0464796B1/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
    • F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
    • F01P11/12—Filtering, cooling, or silencing cooling-air
    • 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
    • F01P1/00—Air cooling
    • F01P1/06—Arrangements for cooling other engine or machine parts
    • 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
    • F01P5/02—Pumping cooling-air; Arrangements of cooling-air pumps, e.g. fans or blowers
    • F01P5/04—Pump-driving arrangements
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/21—Elements
    • Y10T74/2186—Gear casings
    • Y10T74/2189—Cooling

Definitions

  • the invention relates to an encapsulated belt drive of an internal combustion engine according to the preamble of patent claim 1.
  • Such an encapsulated belt drive is known from DE-PS 94 82 07.
  • a cooling air flow branched off from the cooling fan behind the first cylinder is introduced into the belt capsule via a connecting line and a filter device.
  • the cooling air flow is only branched off behind the first cylinder, since the cooling air flow is already heated at this point by the waste heat absorbed by the first cylinder and the full cooling capacity for cooling the belt drive is therefore no longer available.
  • This type of cooling air flow also contributes to an unfavorable cooling of the cylinders, since the first cylinder is cooled particularly intensively and the subsequent cylinders are cooled with a cooling air quantity reduced by the branched cooling air flow.
  • the connecting line as a cantilever line, is susceptible to damage from external inlets and vibrations of the internal combustion engine and, due to its large space requirement, defines the upper internal combustion engine contour.
  • the invention is based on the object of providing an encapsulated belt drive of an internal combustion engine which, on the one hand, ensures effective cooling of the belt drive without disadvantageous cooling of the cylinders and, on the other hand, is arranged in a space-saving manner and not susceptible to damage.
  • the connecting line is designed as an air shaft which is formed in the area of the cooling fan by a cooling fan jacket flange and a portion of the adjacent cylinder head and continues via a housing part which is sealingly connected to the cooling fan jacket flange and which connects to an air inlet opening of the belt capsule .
  • the filter device is formed by two baffles, which are arranged in the cooling air fan jacket flange and in the housing part.
  • the baffles can be cast or molded onto the respective components, so that the manufacturing effort is very low.
  • the housing part is made of plastic and is therefore easy and uncomplicated to manufacture with low weight.
  • This dust-free and effective cooling can be used in particular in the case of a toothed belt which drives, for example, a camshaft or injection pump of a self-igniting internal combustion engine.
  • a second air shaft is arranged next to the first for supplying cooling air to a second belt.
  • This second belt is preferably in turn a toothed belt, which, however, drives auxiliary units such as hydraulic pumps. Effective cooling of the toothed belt is essential, especially when almost the entire useful output of an internal combustion engine is used to drive hydraulic pumps.
  • the second air shaft is constructed largely the same as the first air shaft and in particular it is provided to provide a two-pass, one-piece housing part for the transport of cooling air.
  • a self-igniting internal combustion engine (not shown further) has a cooling air blower 1 which is used for cooling components of the internal combustion engine and / or a heat exchanger or the medium located therein.
  • the cooling air blower 1 is enclosed by a cooling blower jacket which has a cooling blower jacket flange 2.
  • the internal combustion engine has a crankshaft which converts the translational movement generated by the pistons of the internal combustion engine into a rotary movement.
  • At least one toothed belt wheel 3 is fastened to the front end of the crankshaft, which drives the camshaft of the internal combustion engine or, at the same time, the injection pump or the injection pump elements via a toothed belt.
  • the toothed belt wheel 3 and the toothed belt are covered by a belt capsule 4, which is fastened to the internal combustion engine by means of screws 5.
  • the connecting line is designed as an air shaft 6, which is in the area of the cooling fan 1 from the cooling fan jacket flange 2 and a partial section of the adjacent cylinder head 7 is formed.
  • a first rib in the form of a baffle 8a is cast onto the cooling fan jacket flange 2 produced by the die casting process.
  • a housing part 10, which forms the further air shaft, is fastened to the cooling fan jacket flange 2 by a screw connection 9.
  • the housing part 10 has a chicane 8b in the area of the screw connection 9, which is molded onto the housing part 10.
  • the housing part 10 has a constriction 11 which engages in a cooling air inlet opening 12 of the belt capsule 4.

Landscapes

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

Abstract

2.1 A known, encapsulated belt drive of an internal-combustion engine, which is cooled by a cooling air flow tapped off from a cooling fan (1), has a complex connecting line which projects beyond the external contours of the internal-combustion engine and, overall, is difficult to mount and is at risk of being damaged. <??>2.2 According to the invention, the connecting line is constructed as an air shaft (6) which is formed largely from existing parts of the internal-combustion engine and is additionally arranged such that it has no parts projecting beyond the external contour of the internal-combustion engine. <IMAGE>

Description

Die Erfindung betrifft einen gekapselten Riementrieb einer Brennkraftmaschine gemäß Oberbegriff des Patentanspruchs 1.The invention relates to an encapsulated belt drive of an internal combustion engine according to the preamble of patent claim 1.

Ein derartiger gekapselter Riementrieb ist aus der DE-PS 94 82 07 bekannt. Bei diesem Riementrieb wird ein von dem Kühlgebläse hinter dem ersten Zylinder abgezweigter Kühlluftstrom über eine Verbindungsleitung und eine Filtereinrichtung in die Riemenkapsel eingeleitet. Nachteilig ist, daß der Kühlluftstrom erst hinter dem ersten Zylinder abgezweigt wird, da der Kühlluftstrom an dieser Stelle schon um die von dem ersten Zylinder aufgenommene Abwärme erhitzt ist und somit nicht mehr die volle Kühlleistung zur Kühlung des Riementriebs zur Verfügung steht. Auch trägt diese Art der Kühlluftstromentnahme zu einer ungünstigen Kühlung der Zylinder bei, da der erste Zylinder besonders intensiv gekühlt wird und die nachfolgenden Zylinder mit einer um den abgezweigten Kühlluftstrom verringerten Kühlluftmenge gekühlt werden. Weiterhin ist die Verbindungsleitung als freitragende Leitung anfällig gegen Beschädigungen durch äußere Einlfüsse und durch Vibrationen der Brennkraftmaschine und legt durch ihren großen Platzbedarf die obere Brennkraftmaschinenkontur fest.Such an encapsulated belt drive is known from DE-PS 94 82 07. In this belt drive, a cooling air flow branched off from the cooling fan behind the first cylinder is introduced into the belt capsule via a connecting line and a filter device. It is disadvantageous that the cooling air flow is only branched off behind the first cylinder, since the cooling air flow is already heated at this point by the waste heat absorbed by the first cylinder and the full cooling capacity for cooling the belt drive is therefore no longer available. This type of cooling air flow also contributes to an unfavorable cooling of the cylinders, since the first cylinder is cooled particularly intensively and the subsequent cylinders are cooled with a cooling air quantity reduced by the branched cooling air flow. Furthermore, the connecting line, as a cantilever line, is susceptible to damage from external inlets and vibrations of the internal combustion engine and, due to its large space requirement, defines the upper internal combustion engine contour.

Der Erfindung liegt die Aufgabe zugrunde, einen gekapselten Riementrieb einer Brennkraftmaschine bereitzustellen, der einerseits für eine effektive Kühlung des Riementriebs ohne Benachteiligung der Kühlung der Zylinder sorgt und andererseits raumsparend und unanfällig gegen Beschädigungen angeordnet ist.The invention is based on the object of providing an encapsulated belt drive of an internal combustion engine which, on the one hand, ensures effective cooling of the belt drive without disadvantageous cooling of the cylinders and, on the other hand, is arranged in a space-saving manner and not susceptible to damage.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß die Verbindungsleitung als Luftschacht ausgebildet ist, der im Bereich des Kühlgebläses von einem Kühlgebläsemantelflansch und einem Teilabschnitt des angrenzenden Zylinderkopfes gebildet wird und sich über ein dichtend mit dem Kühlgebläsemantelflansch verbundenes Gehäuseteil fortsetzt, daß an eine Lufteinlaßöffnung der Riemenkapsel anschließt. Damit werden die zuvor geschilderten Nachteile vermieden und zudem eine einfach aufgebaute Verbindungsleitung ermöglicht. Die Gefahr von Beschädigungen ist durch die integrierte Anordnung der Verbindungsleitung sehr gering. Durch die direkte Entnahme des Kühlluftstromes im Bereich des Kühlgebläses ist die Kühlluft noch nicht erwärmt und bei der Zylinderkühlung treten keine Kühlluftmengenunterschiede auf.This object is achieved in that the connecting line is designed as an air shaft which is formed in the area of the cooling fan by a cooling fan jacket flange and a portion of the adjacent cylinder head and continues via a housing part which is sealingly connected to the cooling fan jacket flange and which connects to an air inlet opening of the belt capsule . This avoids the disadvantages described above and also enables a simply constructed connecting line. The risk of damage is very low due to the integrated arrangement of the connecting line. Due to the direct removal of the cooling air flow in the area of the cooling fan, the cooling air is not yet warmed up and there are no differences in the quantity of cooling air during cylinder cooling.

In Weiterbildung der Erfindung wird die Filtereinrichtung durch zwei Schikanen gebildet, die im Kühlluftgebläsemantelflansch und in dem Gehäuseteil angeordnet sind. Dabei können die Schikanen an die jeweiligen Bauteile angegossen bzw. angespritzt sein, so daß der Herstellungsaufwand sehr gering ist.In a development of the invention, the filter device is formed by two baffles, which are arranged in the cooling air fan jacket flange and in the housing part. The baffles can be cast or molded onto the respective components, so that the manufacturing effort is very low.

Erfindungsgemäß ist das Gehäuseteil aus Kunststoff gefertigt und ist somit leicht und unkompliziert bei geringen Gewicht herstellbar.According to the invention, the housing part is made of plastic and is therefore easy and uncomplicated to manufacture with low weight.

Diese staubfreie und effektive Kühlung ist insbesondere bei einem Zahnriemen, der beispielsweise eine Nockenwelle oder Einspritzpumpe einer selbstzündenden Brennkraftmaschine antreibt, einsetzbar.This dust-free and effective cooling can be used in particular in the case of a toothed belt which drives, for example, a camshaft or injection pump of a self-igniting internal combustion engine.

In Weiterbildung der Erfindung ist ein zweiter Luftschacht neben dem ersten zur Kühlluftversorgung eines zweiten Riemens angeordnet. Dieser zweite Riemen ist vorzugsweise wiederrum ein Zahnriemen, der aber Hilfsaggregate wie beispielsweise Hydraulikpumpen antreibt. Gerade, wenn nahezu die gesamte Nutzleistung einer Brennkraftmaschine zum Antrieb von Hydraulikpumpen genutzt wird, ist eine effektive Kühlung des Zahnriemens unumgänglich. Der zweite Luftschacht ist dabei weitestgehend gleich aufgebaut wie der erste Luftschacht und insbesondere ist vorgesehen, ein zweizügiges, einteiliges Gehäuseteil zum Kühllufttransport vorzusehen.In a further development of the invention, a second air shaft is arranged next to the first for supplying cooling air to a second belt. This second belt is preferably in turn a toothed belt, which, however, drives auxiliary units such as hydraulic pumps. Effective cooling of the toothed belt is essential, especially when almost the entire useful output of an internal combustion engine is used to drive hydraulic pumps. The second air shaft is constructed largely the same as the first air shaft and in particular it is provided to provide a two-pass, one-piece housing part for the transport of cooling air.

Weitere Vorteile der Erfindung sind der Zeichnungsbeschreibung zu entnehmen, in der ein in den Figuren dargestelltes Ausführungsbeispiel der Erfindung beschrieben ist.Further advantages of the invention can be found in the description of the drawing, in which an embodiment of the invention shown in the figures is described.

Es zeigen:

  • Fig.1: eine Draufsicht auf eine Verbindungsleitung,
  • Fig.2: einen Querschnitt durch die Verbindungsleitung.
Show it:
  • 1: a plan view of a connecting line,
  • Fig.2: a cross section through the connecting line.

Eine nicht weiter dargestellte selbstzündende Brennkraftmaschine weist ein Kühlluftgebläse 1 auf, das zur Kühlung von Bauteilen der Brennkraftmaschine und/oder eines Wärmetauschers bzw. des darin befindlichen Mediums genutzt wird. Das Kühlluftgebläse 1 ist von einem Kühlgebläsemantel eingefasst, der einen Kühlgebläsemantelflansch 2 aufweist. Die Brennkraftmaschine weist eine Kurbelwelle auf, die die von den Kolben der Brennkraftmaschine erzeugte translatorische in eine rotatorische Bewegung umsetzt. Dabei ist auf dem stirnseitigen Ende der Kurbelwelle zumindest ein Zahnriemenrad 3 befestigt, das über einen Zahnriemen die Nockenwelle der Brennkraftmaschine bzw. gleichzeitig der Einspritzpumpe oder der Einspritzpumpenelemente antreibt. Dabei wird das Zahnriemenrad 3 und der Zahnriemen von einer Riemenkapsel 4 abgedeckt, die mittels Schrauben 5 an der Brennkraftmaschine befestigt ist. Die Verbindungsleitung ist als Luftschacht 6 ausgebildet, der im Bereich des Kühlgebläses 1 von dem Kühlgebläsemantelflansch 2 und einem Teilabschnitt des angrenzenden Zylinderkopfes 7 gebildet wird. Dabei ist an den im Druckgußverfahren hergestellten Kühlgebläsemantelflansch 2 eine erste Rippe in Form einer Schikane 8a angegossen. An dem Kühlgebläsemantelflansch 2 ist durch eine Schraubverbindung 9 ein Gehäuseteil 10 befestigt, das den weiteren Luftschaft bildet. Das Gehäuseteil 10 weist im Bereich der Schraubverbindung 9 eine Schikane 8b auf, die an das Gehäuseteil 10 angespritzt ist. An dem gegenüberliegenden Ende weist das Gehäuseteil 10 eine Verengung 11 auf, die in eine Kühllufteinlaßöffnung 12 der Riemenkapsel 4 eingreift.A self-igniting internal combustion engine (not shown further) has a cooling air blower 1 which is used for cooling components of the internal combustion engine and / or a heat exchanger or the medium located therein. The cooling air blower 1 is enclosed by a cooling blower jacket which has a cooling blower jacket flange 2. The internal combustion engine has a crankshaft which converts the translational movement generated by the pistons of the internal combustion engine into a rotary movement. At least one toothed belt wheel 3 is fastened to the front end of the crankshaft, which drives the camshaft of the internal combustion engine or, at the same time, the injection pump or the injection pump elements via a toothed belt. The toothed belt wheel 3 and the toothed belt are covered by a belt capsule 4, which is fastened to the internal combustion engine by means of screws 5. The connecting line is designed as an air shaft 6, which is in the area of the cooling fan 1 from the cooling fan jacket flange 2 and a partial section of the adjacent cylinder head 7 is formed. In this case, a first rib in the form of a baffle 8a is cast onto the cooling fan jacket flange 2 produced by the die casting process. A housing part 10, which forms the further air shaft, is fastened to the cooling fan jacket flange 2 by a screw connection 9. The housing part 10 has a chicane 8b in the area of the screw connection 9, which is molded onto the housing part 10. At the opposite end, the housing part 10 has a constriction 11 which engages in a cooling air inlet opening 12 of the belt capsule 4.

Claims (5)

1. Gekapselter Riementrieb einer Brennkraftmaschine, wobei ein von einem Kühlgebläse abgezweigter Kühlluftstrom über eine Verbindungsleitung und eine Filtereinrichtung in die Riemenkapsel (4) eingeleitet wird, dadurch gekennzeichnet, daß die Verbindungsleitung als Luftschaft (6) ausgebildet ist, der im Bereich des Kühlgebläses (1) von einem Kühlgebläsemantelflansch (2) und einem Teilabschnitt des angrenzenden Zylinderkopfes (7) gebildet wird und sich über ein dichtend mit dem Kühlgebläsemantelflansch (2) verbundenes Gehäuseteil (10) fortsetzt, das an eine Lufteinlaßöffnung (12) der Riemenkapsel (4) anschließt.1. Encapsulated belt drive of an internal combustion engine, wherein a cooling air flow branched off from a cooling fan is introduced into the belt capsule (4) via a connecting line and a filter device, characterized in that the connecting line is designed as an air shaft (6) which is in the area of the cooling fan (1 ) is formed by a cooling fan jacket flange (2) and a section of the adjacent cylinder head (7) and continues via a housing part (10) which is sealingly connected to the cooling fan jacket flange (2) and connects to an air inlet opening (12) of the belt capsule (4). 2. Gekapselter Riementrieb nach Anspruch 1, dadurch gekennzeichnet, daß die Filtereinrichtung zwei Schikanen (8a, 8b) sind, die im Kühlgebläsemantelflansch (2) und dem Gehäuseteil (10) angeordnet sind.2. Encapsulated belt drive according to claim 1, characterized in that the filter device are two baffles (8a, 8b) which are arranged in the cooling fan jacket flange (2) and the housing part (10). 3. Gekapselter Riementrieb nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß das Gehäuseteil (10) aus Kunstoff gefertigt ist.3. Encapsulated belt drive according to claim 1 or 2, characterized in that the housing part (10) is made of plastic. 4. Gekapselter Riementrieb nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß der Riemen ein Zahnriemen ist.4. Encapsulated belt drive according to one of claims 1 to 3, characterized in that the belt is a toothed belt. 5. Gekapselter Riementrieb nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß ein zweiter Luftschacht neben dem ersten zur Kühlluftversorgung eines zweiten Riemens angeordnet ist.5. Encapsulated belt drive according to one of claims 1 to 4, characterized in that a second air shaft is arranged next to the first for supplying cooling air to a second belt.
EP91111034A 1990-07-03 1991-07-03 Belt drive of an internal combustion engine Expired - Lifetime EP0464796B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE59103085T DE59103085D1 (en) 1991-07-03 1991-07-03 Belt drive of an internal combustion engine.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE4021175A DE4021175A1 (en) 1990-07-03 1990-07-03 BELT DRIVE OF AN INTERNAL COMBUSTION ENGINE

Publications (2)

Publication Number Publication Date
EP0464796A1 true EP0464796A1 (en) 1992-01-08
EP0464796B1 EP0464796B1 (en) 1994-09-28

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP91111034A Expired - Lifetime EP0464796B1 (en) 1990-07-03 1991-07-03 Belt drive of an internal combustion engine

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US (1) US5277663A (en)
EP (1) EP0464796B1 (en)
DE (1) DE4021175A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4136748A1 (en) * 1991-11-08 1993-05-13 Kloeckner Humboldt Deutz Ag Liquid cooled diesel engine - has enhanced air cooling for encapsulated toothed belt drive
DE19517491A1 (en) * 1995-05-12 1996-11-14 Zahnradfabrik Friedrichshafen Cooling for a transmission control
US5957796A (en) * 1998-03-19 1999-09-28 Mclean; Vernon Belt guard

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DE1236276B (en) * 1965-11-09 1967-03-09 Porsche Kg Drive the auxiliary units on internal combustion engines, especially for motor vehicles
DE2265214A1 (en) * 1972-05-08 1976-12-16 Hatz Motoren I.C. engine with closed cooling air system - has rock wool on insides of conduits for silencing
US4497285A (en) * 1981-09-09 1985-02-05 Honda Giken Kogyo Kabushiki Kaisha Cooling structure for internal combustion engine
DE3419368C1 (en) * 1984-05-24 1985-05-09 Daimler-Benz Ag, 7000 Stuttgart Ventilation device on an internal combustion engine

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DE948207C (en) * 1953-08-05 1956-08-30 Kloeckner Humboldt Deutz Ag Belt drive for internal combustion engines
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JPS5939920A (en) * 1982-08-30 1984-03-05 Suzuki Motor Co Ltd Cooling device for engine and drive mechanism
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DE3631517A1 (en) * 1986-09-17 1988-04-14 Konrad Dipl Ing Schmidt ONE OR MULTI-PIECE PROTECTIVE FAIRING FOR TENSION GEARBOXES

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Publication number Priority date Publication date Assignee Title
DE1236276B (en) * 1965-11-09 1967-03-09 Porsche Kg Drive the auxiliary units on internal combustion engines, especially for motor vehicles
DE2265214A1 (en) * 1972-05-08 1976-12-16 Hatz Motoren I.C. engine with closed cooling air system - has rock wool on insides of conduits for silencing
US4497285A (en) * 1981-09-09 1985-02-05 Honda Giken Kogyo Kabushiki Kaisha Cooling structure for internal combustion engine
DE3419368C1 (en) * 1984-05-24 1985-05-09 Daimler-Benz Ag, 7000 Stuttgart Ventilation device on an internal combustion engine

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 8, no. 143 (M-306)(1580) 04 Juli 1984, & JP-A-59 39920 (SUZUKI JIDOSHA) 05 März 1984, *

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US5277663A (en) 1994-01-11
EP0464796B1 (en) 1994-09-28
DE4021175A1 (en) 1992-01-09

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