EP0990799B1 - Water coolant pump - Google Patents

Water coolant pump Download PDF

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Publication number
EP0990799B1
EP0990799B1 EP99890303A EP99890303A EP0990799B1 EP 0990799 B1 EP0990799 B1 EP 0990799B1 EP 99890303 A EP99890303 A EP 99890303A EP 99890303 A EP99890303 A EP 99890303A EP 0990799 B1 EP0990799 B1 EP 0990799B1
Authority
EP
European Patent Office
Prior art keywords
cooling water
water pump
housing
accordance
outflow
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
EP99890303A
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German (de)
French (fr)
Other versions
EP0990799A1 (en
Inventor
Siegfried Heer
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.)
TCG Unitech AG
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TCG Unitech AG
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Filing date
Publication date
Application filed by TCG Unitech AG filed Critical TCG Unitech AG
Publication of EP0990799A1 publication Critical patent/EP0990799A1/en
Application granted granted Critical
Publication of EP0990799B1 publication Critical patent/EP0990799B1/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
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D1/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
    • F04D1/06—Multi-stage pumps
    • F04D1/063—Multi-stage pumps of the vertically split casing type
    • F04D1/066—Multi-stage pumps of the vertically split casing type the casing consisting of a plurality of annuli bolted together
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/426—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps

Definitions

  • the present invention relates to a cooling water pump according to the preamble of claim 1.
  • cooling water pumps for internal combustion engines, in particular for motor vehicles, a number of boundary conditions must be observed.
  • a Such a cooling water pump must be simple in construction, inexpensive to manufacture be and be robust enough to last without any maintenance of the engine.
  • Another essential design criterion of cooling water pumps is the small space available in modern motor vehicles. With certain engines this also results the problem that even at relatively low speeds, high delivery rates must be made available. Furthermore, the efficiency should be as possible be large to reduce fuel consumption.
  • Cooling water pumps are usually designed as radial centrifugal pumps, the dimensions of which are designed in accordance with the volumes to be conveyed. Especially when the outer diameter of the pump is limited however, significant constructive problems arise.
  • DE 725 762 C describes a cooling water pump for an internal combustion engine known, which is designed in three stages. There is a radial inflow and a radial outflow of the cooling water is provided.
  • a pump of this type requires a relatively large amount of space and is therefore in many cases not applicable. The same applies to a pump, such as that described in US Pat. No. 1,370,823 is disclosed.
  • a pump is known from US Pat. No. 3,385,225 A in which the motor-side bearing is integrated in the outflow housing.
  • a compact version is one of them Pump cannot be reached because the heat is removed from the area of the bearing constructive limits.
  • the object of the present invention is to provide a cooling water pump for a To create an internal combustion engine that already at relatively low speeds has a high delivery rate and delivery head.
  • the outside diameter the pump should be as small as possible, and it should be an efficient heat dissipation be guaranteed from the warehouse.
  • the cooling water flow essentially takes place in Axial direction, although the pump impellers are directed radially outwards Have flow component.
  • the cooling water flow is directed radially inwards in order to to be able to optimally flow onto the following impeller.
  • the cooling water pump is designed when the pump is carried out in three stages, and if between the inflow housing and the Outflow housing two intermediate housing are provided. In particular it is advantageous if guide vanes are provided which are fixed to the intermediate housing are connected.
  • the rotor has a stub shaft which is mounted in a floating manner, on which the wheels are attached.
  • the construction is in this case particularly simple and robust.
  • the cooling water pump according to the invention can preferably directly to the engine block or flange-mounted the cylinder head of the internal combustion engines, if the bearing part has a flange surface that is parallel to the axis of the cooling water pump and that the outflow opening is formed in the flange surface is. This results in a particularly space-saving and safe design, because the number of sealing surfaces and connecting parts is minimized. The manufacturing cost can be further reduced by the fact that the wheels as Identical parts are formed.
  • the cooling water pump according to the invention consists of a bearing part 1, the is simultaneously designed as an outflow housing, an inflow housing 2 and two intermediate housings 3 and 4, which between the bearing part 1 and Inflow housing 2 are arranged.
  • a variety of screws 5 is used Connection of the components described above.
  • the structure of the cooling water pump can be seen in detail in FIG. 3.
  • the general with 6 designated rotor of the cooling water pump consists of a Drive flange 7, the teeth on its outer circumference 7a for transmission of the drive torque, a journal 8, which in the Bearing part 1 is stored, and a protruding stub shaft 9.
  • On the Stub shaft 9 are three identical pump impellers at equal axial distances Wedges 10a, 10b and 10c. Are between the impellers 10a and 10b fixed guide vanes 11a which are fixed to the intermediate housing 3rd are connected. In the same way there are 4 guide vanes with the intermediate housing 11b connected, which are arranged between the impellers 10b and 10c.
  • the bearing part 1 there is an outlet screw 12 for the conveyed cooling water provided, which opens into openings 13a, 13b, which on a flange surface 14 in Bearing part 1 are formed.
  • the flange surface 14 is parallel to the axis 15 the pump.
  • a mechanical seal 16 prevents the ingress of cooling water into the bearing 8.
  • the inner diameter d of the intake manifold 17 is approximately 45% of the outside diameter D of the pump.
  • the impellers 10a, 10b and 10c and the guide vanes 11a and 11b are each three-dimensionally curved. Due to the extensive design of the components as identical parts (intermediate housing 3 and 4, impellers 10a, 10b, 10c and guide vanes 11a, 11b) can the manufacturing costs are kept very low.
  • the present invention enables a cooling water pump with a large delivery rate with small external dimensions.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Sampling And Sample Adjustment (AREA)
  • Compressor (AREA)

Abstract

The engine has a housing with rotor (6) having pump rotors (10a,b,c), an inflow housing (2) and an outflow housing (1). The rotor is born in a bearing part, which also serves as fastening for the pump. A flow guide housing is integrated with the bearing part. Stationary guide blades (11a,b) are positioned between neighboring pump rotors. The three-stage pump has two intermediate housings (3,4) between inflow and outflow housings.

Description

Die vorliegende Erfindung betrifft eine Kühlwasserpumpe gemäß dem Oberbegriff von Patentanspruch 1.The present invention relates to a cooling water pump according to the preamble of claim 1.

Bei der Konstruktion von Kühlwasserpumpen für Brennkraftmaschinen, insbesondere für Kraftfahrzeuge, ist eine Reihe von Randbedingungen zu beachten. Eine solche Kühlwasserpumpe muss in ihrem Aufbau einfach sein, kostengünstig herstellbar sein und ausreichend robust sein, um ohne jegliche Wartung die Lebensdauer des Motors zu erreichen. Ein weiteres wesentliches Kriterium bei der Konstruktion von Kühlwasserpumpen ist der geringe zur Verfügung stehende Bauraum in modernen Kraftfahrzeugen. Bei bestimmten Motoren ergibt sich zusätzlich das Problem, dass bereits bei relativ niedrigen Drehzahlen hohe Fördermengen zur Verfügung gestellt werden müssen. Weiters soll der Wirkungsgrad möglichst groß sein, um den Kraftstoffverbrauch zu senken.In the design of cooling water pumps for internal combustion engines, in particular for motor vehicles, a number of boundary conditions must be observed. A Such a cooling water pump must be simple in construction, inexpensive to manufacture be and be robust enough to last without any maintenance of the engine. Another essential design criterion of cooling water pumps is the small space available in modern motor vehicles. With certain engines this also results the problem that even at relatively low speeds, high delivery rates must be made available. Furthermore, the efficiency should be as possible be large to reduce fuel consumption.

Üblicherweise werden Kühlwasserpumpen als Radialkreiselpumpen ausgeführt, deren Abmessungen entsprechend der zur fördernden Volumina ausgelegt sind. Insbesondere dann, wenn der Außendurchmesser der Pumpe limitiert ist, können sich jedoch erhebliche konstruktive Probleme auftun.Cooling water pumps are usually designed as radial centrifugal pumps, the dimensions of which are designed in accordance with the volumes to be conveyed. Especially when the outer diameter of the pump is limited however, significant constructive problems arise.

Aus der DE 725 762 C ist eine Kühlwasserpumpe für eine Brennkraftmaschine bekannt, die dreistufig ausgebildet ist. Dabei ist eine radiale Einströmung und ein radiales Abströmen des Kühlwassers vorgesehen. Eine Pumpe einer solchen Bauart benötigt einen relativ großen Bauraum und ist daher in vielen Fällen nicht anwendbar. Ähnliches gilt für eine Pumpe, wie sie etwa in der US 1 370 823 A offenbart ist.DE 725 762 C describes a cooling water pump for an internal combustion engine known, which is designed in three stages. There is a radial inflow and a radial outflow of the cooling water is provided. A pump of this type requires a relatively large amount of space and is therefore in many cases not applicable. The same applies to a pump, such as that described in US Pat. No. 1,370,823 is disclosed.

Aus der US 3,385,225 A ist eine Pumpe bekannt, bei dem das motorseitige Lager in das Abströmgehäuse integriert ist. Eine kompakte Ausführung ist bei einer solchen Pumpe nicht erreichbar, da die Wärmeabfuhr aus dem Bereich des Lagers konstruktive Grenzen setzt.A pump is known from US Pat. No. 3,385,225 A in which the motor-side bearing is integrated in the outflow housing. A compact version is one of them Pump cannot be reached because the heat is removed from the area of the bearing constructive limits.

Aufgabe der vorliegenden Erfindung ist es, eine Kühlwasserpumpe für eine Brennkraftmaschine zu schaffen, die bereits bei relativ geringen Drehzahlen eine hohe Fördermenge und Förderhöhe aufweist. Insbesondere soll der Außendurchmesser der Pumpe möglichst gering sein, und es soll eine effiziente Wärmeabfuhr aus dem Lager gewährleistet sein.The object of the present invention is to provide a cooling water pump for a To create an internal combustion engine that already at relatively low speeds has a high delivery rate and delivery head. In particular, the outside diameter the pump should be as small as possible, and it should be an efficient heat dissipation be guaranteed from the warehouse.

Erfindungsgemäß werden diese Aufgaben durch die Merkmale von Patentanspruch 1 gelöst. Die Kühlwasserdurchströmung erfolgt dabei im Wesentlichen in Axialrichtung, obgleich die Pumpenlaufräder eine radial nach außen gerichtete Strömungskomponente aufweisen. Durch die vorzugsweise vorgesehenen Leitschaufeln wird der Kühlwasserstrom jeweils radial nach innen gerichtet, um das darauffolgende Laufrad optimal anströmen zu können. Ein besonders günstiger konstruktiver Aufbau der Kühlwasserpumpe ist dann gegeben, wenn die Pumpe dreistufig ausgeführt ist, und wenn zwischen dem Zuströmgehäuse und dem Abströmgehäuse zwei Zwischengehäuse vorgesehen sind. Insbesondere ist es dabei vorteilhaft, wenn Leitschaufeln vorgesehen sind, die fest mit den Zwischengehäusen verbunden sind.According to the invention, these objects are achieved by the features of claim 1 solved. The cooling water flow essentially takes place in Axial direction, although the pump impellers are directed radially outwards Have flow component. Through the preferably provided guide vanes the cooling water flow is directed radially inwards in order to to be able to optimally flow onto the following impeller. A particularly affordable one The cooling water pump is designed when the pump is carried out in three stages, and if between the inflow housing and the Outflow housing two intermediate housing are provided. In particular it is advantageous if guide vanes are provided which are fixed to the intermediate housing are connected.

In einer besonders begünstigten Ausführungsvariante der vorliegenden Erfindung ist vorgesehen, dass der Rotor einen fliegend gelagerten Wellenstummel aufweist, auf dem die Laufräder befestigt sind. Die Konstruktion ist in diesem Fall besonders einfach und robust.In a particularly favored embodiment variant of the present invention it is provided that the rotor has a stub shaft which is mounted in a floating manner, on which the wheels are attached. The construction is in this case particularly simple and robust.

Die erfindungsgemäße Kühlwasserpumpe kann bevorzugt direkt an den Motorblock oder den Zylinderkopf der Brennkraftmaschinen angeflanscht werden, wenn der Lagerteil eine Flanschfläche aufweist, die parallel zur Achse der Kühlwasserpumpe ist, und dass die Ausströmöffnung in der Flanschfläche ausgebildet ist. Dadurch ergibt sich eine besonders platzsparende und sichere Ausführung, da die Anzahl der Dichtflächen und Verbindungsteile minimiert ist. Die Herstellungskosten können weiters dadurch verringert werden, dass die Laufräder als Gleichteile ausgebildet sind.The cooling water pump according to the invention can preferably directly to the engine block or flange-mounted the cylinder head of the internal combustion engines, if the bearing part has a flange surface that is parallel to the axis of the cooling water pump and that the outflow opening is formed in the flange surface is. This results in a particularly space-saving and safe design, because the number of sealing surfaces and connecting parts is minimized. The manufacturing cost can be further reduced by the fact that the wheels as Identical parts are formed.

In der Folge wird die Erfindung anhand des in den Figuren dargestellten Ausführungsbeispiels näher erläutert. Es zeigen:

Fig. 1
eine axonometrische Außenansicht einer erfindungsgemäßen Kühlwasserpumpe,
Fig. 2
eine axonometrische Ansicht der Kühlwasserpumpe schräg von unten,
Fig. 3
einen Längsschnitt der Kühlwasserpumpe und
Fig. 4
einen Schnitt nach Linie IV - IV in Fig. 3.
The invention is explained in more detail below on the basis of the exemplary embodiment illustrated in the figures. Show it:
Fig. 1
an axonometric external view of a cooling water pump according to the invention,
Fig. 2
an axonometric view of the cooling water pump obliquely from below,
Fig. 3
a longitudinal section of the cooling water pump and
Fig. 4
a section along line IV - IV in Fig. 3rd

Die erfindungsgemäße Kühlwasserpumpe besteht aus einem Lagerteil 1, der gleichzeitig als Abströmgehäuse ausgebildet ist, einem Zuströmgehäuse 2 und zwei Zwischengehäusen 3 und 4, die zwischen dem Lagerteil 1 und dem Zuströmgehäuse 2 angeordnet sind. Eine Vielzahl von Schrauben 5 dient zur Verbindung der oben beschriebenen Bauteile.The cooling water pump according to the invention consists of a bearing part 1, the is simultaneously designed as an outflow housing, an inflow housing 2 and two intermediate housings 3 and 4, which between the bearing part 1 and Inflow housing 2 are arranged. A variety of screws 5 is used Connection of the components described above.

In der Fig. 3 ist der Aufbau der Kühlwasserpumpe detailliert ersichtlich. Der allgemein mit 6 bezeichnete Rotor der Kühlwasserpumpe besteht aus einem Antriebsflansch 7, der an seinem äußeren Umfang eine Verzahnung 7a zur Übertragung des Antriebsmoments aufweist, einem Lagerzapfen 8, der in dem Lagerteil 1 gelagert ist, und einem vorstehenden Wellenstummel 9. Auf dem Wellenstummel 9 sind in gleichen Axialabständen drei baugleiche Pumpenlaufräder 10a, 10b und 10c aufgekeilt. Zwischen den Laufrädern 10a und 10b sind feststehende Leitschaufeln 11a angeordnet, die fest mit dem Zwischengehäuse 3 verbunden sind. In gleicher Weise sind mit dem Zwischengehäuse 4 Leitschaufeln 11b verbunden, die zwischen den Laufrädern 10b und 10c angeordnet sind. In dem Lagerteil 1 ist eine Austrittsschnecke 12 für das geförderte Kühlwasser vorgesehen, die in Öffnungen 13a, 13b mündet, die an einer Flanschfläche 14 im Lagerteil 1 ausgebildet sind. Die Flanschfläche 14 ist dabei parallel zur Achse 15 der Pumpe. Eine Gleitringdichtung 16 verhindert das Eindringen von Kühlwasser in das Lager 8. Der Innendurchmesser d des Ansaugstutzens 17 beträgt etwa 45% des Außendurchmessers D der Pumpe. Die Laufräder 10a, 10b und 10c und die Leitschaufeln 11a und 11b sind jeweils dreidimensional gekrümmt ausgeführt. Durch die weitgehende Ausbildung der Bauteile als Gleichteile (Zwischengehäuse 3 und 4, Laufräder 10a, 10b, 10c und Leitschaufeln 11a, 11b) können die Herstellungskosten sehr gering gehalten werden.The structure of the cooling water pump can be seen in detail in FIG. 3. The general with 6 designated rotor of the cooling water pump consists of a Drive flange 7, the teeth on its outer circumference 7a for transmission of the drive torque, a journal 8, which in the Bearing part 1 is stored, and a protruding stub shaft 9. On the Stub shaft 9 are three identical pump impellers at equal axial distances Wedges 10a, 10b and 10c. Are between the impellers 10a and 10b fixed guide vanes 11a which are fixed to the intermediate housing 3rd are connected. In the same way there are 4 guide vanes with the intermediate housing 11b connected, which are arranged between the impellers 10b and 10c. In the bearing part 1 there is an outlet screw 12 for the conveyed cooling water provided, which opens into openings 13a, 13b, which on a flange surface 14 in Bearing part 1 are formed. The flange surface 14 is parallel to the axis 15 the pump. A mechanical seal 16 prevents the ingress of cooling water into the bearing 8. The inner diameter d of the intake manifold 17 is approximately 45% of the outside diameter D of the pump. The impellers 10a, 10b and 10c and the guide vanes 11a and 11b are each three-dimensionally curved. Due to the extensive design of the components as identical parts (intermediate housing 3 and 4, impellers 10a, 10b, 10c and guide vanes 11a, 11b) can the manufacturing costs are kept very low.

Die vorliegende Erfindung ermöglicht es, eine Kühlwasserpumpe großer Förderleistung mit kleinen Außenabmessungen herzustellen.The present invention enables a cooling water pump with a large delivery rate with small external dimensions.

Claims (8)

  1. A cooling water pump for an IC-engine with an outflow housing (1) comprising a bearing (8) in with a rotor (6) with at least two impellers (10a, 10b, 10c) is held and with flow guide housings, namely an inflow housing (2) and an outflow housing (1) which is arranged integrally with the bearing element (1) and which comprises a spiral outflow casing (12) for the pumped cooling water, characterised in that the bearing element (1) is used for fastening the cooling water pump and that the spiral outflow casing (12) at least partially encompasses the bearing (8).
  2. A cooling water pump in accordance with claim 1, characterised in that fixed guide blades (11a, 11b) are provided between two impellers (10a, 10b, 10c) each.
  3. A cooling water pump in accordance with one of the claims 1 or 2, characterised in that the pump is provided with a three-stage arrangement and that two intermediate housings (3, 4) are provided between the inflow housing (2) and the outflow housing (1).
  4. A cooling water pump in accordance with claim 3, characterised in that guide blades (11a, 11b) are provided which are fixedly connected with the intermediate housings (3, 4).
  5. A cooling water pump in accordance with one of the claims 1 to 4, characterised in that the rotor (6) is provided with a shaft stub (9) which is held in an overhung manner and to which the impellers (10a, 10b, 10c) are fastened.
  6. A cooling water pump in accordance with one of the claims 1 to 5, characterised in that the bearing element (1) is provided with a flange surface (14) which is parallel to the axis (15) of the cooling water pump and the outflow opening (13a, 13b) is formed in the flange surface (14).
  7. A cooling water pump in accordance with one of the claims 1 to 6, characterised in that the impellers (10a, 10b, 10c) are arranged as identical parts.
  8. A cooling water pump in accordance with one of the claims 1 to 7, characterised in that the interior diameter of the suction opening is between 40% and 60% of the outside diameter of the cooling water pump.
EP99890303A 1998-09-28 1999-09-23 Water coolant pump Expired - Lifetime EP0990799B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT160898 1998-09-28
AT160898 1998-09-28

Publications (2)

Publication Number Publication Date
EP0990799A1 EP0990799A1 (en) 2000-04-05
EP0990799B1 true EP0990799B1 (en) 2004-03-10

Family

ID=3517112

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99890303A Expired - Lifetime EP0990799B1 (en) 1998-09-28 1999-09-23 Water coolant pump

Country Status (4)

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US (1) US6267554B1 (en)
EP (1) EP0990799B1 (en)
AT (1) ATE261549T1 (en)
DE (1) DE59908799D1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6732680B1 (en) 2003-01-31 2004-05-11 Ford Global Technologies, Llc Internal combustion engine with liquid coolant pump
US8496448B2 (en) * 2010-03-16 2013-07-30 Toyota Motor Engineering & Manufacturing North America, Inc. Pump assembly
CN104583594B (en) * 2012-09-04 2017-12-12 开利公司 Refrigeration compressor leg is installed
USD808439S1 (en) * 2017-05-09 2018-01-23 Holley Performance Products, Inc. Water pump spacer

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE369927C (en) * 1923-05-29 Max Kessler Multi-stage centrifugal pump for breweries and like
US1370823A (en) 1921-03-08 Water pump and aerator for cooling systems
US1428722A (en) * 1918-01-17 1922-09-12 Patten Mfg Company Water circulator for water-cooled engines
DE517029C (en) * 1928-05-26 1931-02-05 Ame Des Etablissements Tecalem Pump for dripping fluids, especially cooling water pump for internal combustion engines
AT128755B (en) 1930-06-16 1932-06-25 Siemens Ag Device for the automatic switching of consumers with different voltages.
DE725762C (en) * 1938-11-27 1942-09-29 Motoren Werke Mannheim Ag Cooling water centrifugal pump with several pressure levels for internal combustion engines
US3385225A (en) * 1965-06-29 1968-05-28 Siemen & Hinsch Gmbh Rotary pump
US4067665A (en) * 1975-06-16 1978-01-10 Schwartzman Everett H Turbine booster pump system
DE2534740C3 (en) * 1975-08-04 1983-02-03 Franz 4630 Bochum Klaus Canned centrifugal pump
US4479756A (en) * 1978-08-21 1984-10-30 Roy E. Roth Company Multi-stage pump
US4462751A (en) 1982-03-24 1984-07-31 Borg-Warner Corporation Centrifugal pump improvement
US5409350A (en) * 1993-10-29 1995-04-25 Caterpillar Inc. Water pump bearing and seal cartridge
JP3812754B2 (en) * 1996-04-16 2006-08-23 本田技研工業株式会社 Cooling water pump mounting structure for water-cooled internal combustion engine for small vehicles

Also Published As

Publication number Publication date
DE59908799D1 (en) 2004-04-15
EP0990799A1 (en) 2000-04-05
US6267554B1 (en) 2001-07-31
ATE261549T1 (en) 2004-03-15

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