DE19919280A1 - Motor vehicle with rear axle gear has air deflector installed on exhaust system to deflect part of airflow prevailing over bottom of vehicle in direction of rear axle gear to cool it - Google Patents

Motor vehicle with rear axle gear has air deflector installed on exhaust system to deflect part of airflow prevailing over bottom of vehicle in direction of rear axle gear to cool it

Info

Publication number
DE19919280A1
DE19919280A1 DE1999119280 DE19919280A DE19919280A1 DE 19919280 A1 DE19919280 A1 DE 19919280A1 DE 1999119280 DE1999119280 DE 1999119280 DE 19919280 A DE19919280 A DE 19919280A DE 19919280 A1 DE19919280 A1 DE 19919280A1
Authority
DE
Germany
Prior art keywords
rear axle
axle gear
motor vehicle
exhaust system
vehicle
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.)
Ceased
Application number
DE1999119280
Other languages
German (de)
Inventor
Andreas Kuhlmann
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.)
Bayerische Motoren Werke AG
Original Assignee
Bayerische Motoren Werke 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 Bayerische Motoren Werke AG filed Critical Bayerische Motoren Werke AG
Priority to DE1999119280 priority Critical patent/DE19919280A1/en
Publication of DE19919280A1 publication Critical patent/DE19919280A1/en
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K17/00—Arrangement or mounting of transmissions in vehicles
    • B60K17/04—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing
    • B60K17/16—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of differential gearing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K13/00—Arrangement in connection with combustion air intake or gas exhaust of propulsion units
    • B60K13/04—Arrangement in connection with combustion air intake or gas exhaust of propulsion units concerning exhaust

Abstract

At least one air deflector(13) is installed on the exhaust system(8) and deflects a part of the airflow prevailing over the bottom(5) of the vehicle in the direction of the rear axle gear(4) to cool it. The deflector is a metal plate fastened to the silencer installation. The silencer installation has two intermediate silencers which in a horizontal plane are installed on the exhaust system in V-form configuration. The air deflector is located in the space formed between the silencers.

Description

Die Erfindung betrifft ein Kraftfahrzeug mit einem Hinterachsgetriebe gemäß dem Oberbegriff des Anspruchs 1.The invention relates to a motor vehicle with a rear axle transmission according to the Preamble of claim 1.

Hinterachsgetriebe sind häufig in der Bodengruppe eines Kraftfahrzeuges so ange­ ordnet, daß eine Kühlung des Hinterachsgetriebes über die Unterströmung des Kraftfahrzeuges nicht möglich ist. Es ist bereits bekannt zur Kühlung des Hinter­ achsgetriebes Rippenpakete oder externe Ölkühler einzusetzen, um die zulässige Temperatur des in dem Hinterachsgetriebe befindlichen Öles einzuhalten. Diese Zusatzmaßnahmen haben den Nachteil, daß die Kühlung des Hinterachsgetriebes eine Gewichts- und Kostenerhöhung bedingt.Rear axle drives are often in the bottom group of a motor vehicle orders that a cooling of the rear axle gear via the underflow of Motor vehicle is not possible. It is already known for cooling the rear axle gearing rib packs or external oil coolers to ensure the permissible Maintain the temperature of the oil in the rear axle gear. This Additional measures have the disadvantage that the cooling of the rear axle gear a weight and cost increase.

Aufgabe der Erfindung ist es, ein Kraftfahrzeug mit einem Hinterachsgetriebe zu schaffen, bei dem in einfacher Weise eine Kühlung des Hinterachsgetriebes erreicht wird.The object of the invention is to provide a motor vehicle with a rear axle gear create in which cooling of the rear axle gear is achieved in a simple manner becomes.

Diese Aufgabe wird durch die Merkmale des Anspruchs 1 gelöst.This object is solved by the features of claim 1.

Die erfindungsgemäße Kühlung des Hinterachsgetriebes erfolgt vorteilhafterweise dadurch, daß an der Abgasanlage mindestens eine Luftleitfläche angeordnet ist, die eine ausreichende Luftmenge der am Kraftfahrzeug-Unterboden vorherrschenden Luftströmung zur Kühlung auf das Gehäuse des Hinterachsgetriebes leitet.The cooling of the rear axle transmission according to the invention advantageously takes place in that at least one air guide surface is arranged on the exhaust system a sufficient amount of air prevailing on the underbody of the vehicle Air flow for cooling on the housing of the rear axle gear.

In einer vorteilhaften Ausführungsform besteht die Luftleitfläche aus einem entspre­ chend geformten Blech, das ein Bestandteil der Schalldämpferanlage ist. Vorteil­ hafterweise ist die Luftleitfläche mit den Zwischenschalldämpfertöpfen verbunden. In an advantageous embodiment, the air guiding surface consists of an equivalent accordingly shaped sheet metal, which is part of the silencer system. Advantage The air baffle is fortunately connected to the muffler pots.  

Durch die Anordnung einer Luftleitfläche kann auf weitere Kühlungsmaßnahmen verzichtet werden. Von Vorteil ist auch, daß durch die Luftleitfläche der Verbund der Schalldämpfertöpfe versteift wird.The arrangement of an air guide surface allows further cooling measures to be dispensed with. It is also advantageous that the composite of the air guide surface Silencer pots are stiffened.

Eine Ausführungsform der Erfindung wird nachstehend anhand der Zeichnungen beispielshalber beschrieben. Dabei zeigen:An embodiment of the invention will now be described with reference to the drawings described as an example. Show:

Fig. 1 eine Ansicht von der Seite auf einen nur teilweise dargestellten Heck­ bereich eines Kraftfahrzeuges und Fig. 1 is a side view of a rear view of a motor vehicle and only partially shown

Fig. 2 eine Ansicht von oben auf einen Teil einer vor einem Hinterachsge­ triebe angeordneten Schalldämpferanlage. Fig. 2 is a top view of a portion of a transmission arranged in front of a rear axle silencer system.

Die Fig. 1 zeigt den Heckbereich 1 eines Kraftfahrzeuges 2 in Höhe eines Gehäu­ ses 3 eines nur teilweise dargestellten Hinterachsgetriebes 4. Das Hinterachs­ getriebe 4 ist unterhalb eines Bodens 5 des Kraftfahrzeuges 2 angeordnet. In der in den Fig. 1 und 2 gezeigten Ausführungsform ist das Gehäuse 3 des Hinterachs­ getriebes 4 zwischen zwei Zwischenschalldämpfern 6 und 7 einer zu einer Ab­ gasanlage 8 gehörenden Schalldämpferanlage 9 angeordnet. Fig. 1 shows the rear region 1 of a motor vehicle 2 in the amount of a Gehäu ses 3 of a rear axle 4 is shown only partially. The rear axle gear 4 is arranged below a floor 5 of the motor vehicle 2 . In the embodiment shown in FIGS. 1 and 2, the housing 3 of the rear axle gear 4 is arranged between two intermediate silencers 6 and 7 of a silencer system 9 belonging to an exhaust system 8 .

Wie aus der Fig. 2 hervorgeht sind die beiden Zwischenschalldämpfer 6, 7 in der Draufsicht V-förmig angeordnet, so daß ein vorderer Abschnitt 10 des Gehäuses 3 von den hinteren Enden 11 und 12 der Zwischenschalldämpfer 6 und 7 umrahmt wird. Zwischen den beiden Zwischenschalldämpfern 6, 7 ist ein als Luftleitfläche dienendes Blech 13 zumindest an einer Mantelfläche 14, 15 des jeweiligen Zwi­ schenschalldämpfers 6, 7 befestigt, beispielsweise verschweißt.As can be seen from FIG. 2, the two intermediate silencers 6 , 7 are arranged in a V-shape in plan view, so that a front section 10 of the housing 3 is framed by the rear ends 11 and 12 of the intermediate silencers 6 and 7 . Between the two intermediate silencers 6 , 7 serving as an air baffle plate 13 is fixed at least on a lateral surface 14 , 15 of the respective intermediate silencer 6 , 7 , for example welded.

Das Luftleitflächenblech 13 verläuft schräg so nach oben, daß eine durch Pfeile dar­ gestellte Luftströmung 16 zwischen dem Boden 5 des Kraftfahrzeuges 2 und einer Fahrbahn 17 auf eine Unterseite 18 und auf die Seitenflächen 19, 20 des Gehäuses 3 des Hinterachsgetriebes 4 auftrifft.The air baffle plate 13 runs obliquely upward so that an air flow 16 represented by arrows between the floor 5 of the motor vehicle 2 and a road 17 strikes an underside 18 and the side surfaces 19 , 20 of the housing 3 of the rear axle drive 4 .

Claims (4)

1. Kraftfahrzeug mit einem Hinterachsgetriebe und mit einer Abgasanlage, die eine Schalldämpferanlage aufweist, wobei das Hinterachsgetriebe und die Abgasanlage am Boden des Kraftfahrzeuges angeordnet sind, dadurch gekennzeichnet, daß an der Abgasanlage (8) mindestens eine Luftleitfläche (13) angeordnet ist, die einen Teil der am Kraftfahrzeug-Boden (5) vorherrschenden Luftströmung (16) in Richtung des Hinterachsgetriebes (4) zur Kühlung des Hinterachsgetriebes (4) umlenkt.1. Motor vehicle with a rear axle gear and with an exhaust system, which has a silencer system, the rear axle gear and the exhaust system being arranged on the floor of the motor vehicle, characterized in that at least one air-guiding surface ( 13 ) is arranged on the exhaust system ( 8 ) Part of the air flow ( 16 ) prevailing on the motor vehicle floor ( 5 ) is deflected in the direction of the rear axle gear ( 4 ) for cooling the rear axle gear ( 4 ). 2. Kraftfahrzeug nach Anspruch 1, dadurch gekennzeichnet, daß die Luftleitfläche (13) ein Blech ist, das an der Schalldämpferanlage (9) befestigt ist.2. Motor vehicle according to claim 1, characterized in that the air guide surface ( 13 ) is a plate which is attached to the silencer system ( 9 ). 3. Kraftfahrzeug nach den Ansprüchen 1 oder 2, dadurch gekennzeichnet, daß die Schalldämpferanlage (9) zwei Zwischenschalldämpfer (6, 7) aufweist, die in einer horizontalen Ebene V-förmig an der Abgasanlage (8) angeordnet sind, und daß in dem dadurch gebildeten Zwischenraum zwischen den Schalldämpfern (6, 7) das Luftleitflächenblech (13) befestigt ist.3. Motor vehicle according to claims 1 or 2, characterized in that the silencer system ( 9 ) has two intermediate silencers ( 6 , 7 ) which are arranged in a horizontal plane V-shaped on the exhaust system ( 8 ), and in that thereby formed space between the silencers ( 6 , 7 ) the air baffle ( 13 ) is attached. 4. Kraftfahrzeug nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß das Luftleitflächenblech (13) vor einem Gehäuse (3) des Hinterachsgetriebes (4) unterhalb einer Unterseite (18) des Gehäuses (3) des Hinterachsgetriebes (4) endet.4. Motor vehicle according to one of the preceding claims, characterized in that the air baffle ( 13 ) ends in front of a housing ( 3 ) of the rear axle gear ( 4 ) below an underside ( 18 ) of the housing ( 3 ) of the rear axle gear ( 4 ).
DE1999119280 1999-04-28 1999-04-28 Motor vehicle with rear axle gear has air deflector installed on exhaust system to deflect part of airflow prevailing over bottom of vehicle in direction of rear axle gear to cool it Ceased DE19919280A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE1999119280 DE19919280A1 (en) 1999-04-28 1999-04-28 Motor vehicle with rear axle gear has air deflector installed on exhaust system to deflect part of airflow prevailing over bottom of vehicle in direction of rear axle gear to cool it

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1999119280 DE19919280A1 (en) 1999-04-28 1999-04-28 Motor vehicle with rear axle gear has air deflector installed on exhaust system to deflect part of airflow prevailing over bottom of vehicle in direction of rear axle gear to cool it

Publications (1)

Publication Number Publication Date
DE19919280A1 true DE19919280A1 (en) 2000-11-02

Family

ID=7906142

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1999119280 Ceased DE19919280A1 (en) 1999-04-28 1999-04-28 Motor vehicle with rear axle gear has air deflector installed on exhaust system to deflect part of airflow prevailing over bottom of vehicle in direction of rear axle gear to cool it

Country Status (1)

Country Link
DE (1) DE19919280A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10346432A1 (en) * 2003-10-07 2005-05-19 Bayerische Motoren Werke Ag Device mounted on the underside of a motor vehicle for air-cooling the engine exhaust system comprises an air lift region and a forced flow region
GB2558754A (en) * 2016-11-21 2018-07-18 Porsche Ag Aerodynamically acting final silencer for a motor vehicle
US10393003B2 (en) * 2017-02-09 2019-08-27 Ford Global Technologies, Llc Stamped aerodynamic deflector for vehicle muffler

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10346432A1 (en) * 2003-10-07 2005-05-19 Bayerische Motoren Werke Ag Device mounted on the underside of a motor vehicle for air-cooling the engine exhaust system comprises an air lift region and a forced flow region
GB2558754A (en) * 2016-11-21 2018-07-18 Porsche Ag Aerodynamically acting final silencer for a motor vehicle
GB2558754B (en) * 2016-11-21 2020-04-08 Porsche Ag Aerodynamically acting final silencer for a motor vehicle
DE102016122287B4 (en) 2016-11-21 2023-07-20 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Aerodynamic rear silencer for a motor vehicle
US10393003B2 (en) * 2017-02-09 2019-08-27 Ford Global Technologies, Llc Stamped aerodynamic deflector for vehicle muffler

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