WO2006074779A1 - Systeme de guidage d'air de refroidissement d'un moteur a combustion interne place dans le compartiment moteur d'un tracteur de train routier - Google Patents

Systeme de guidage d'air de refroidissement d'un moteur a combustion interne place dans le compartiment moteur d'un tracteur de train routier Download PDF

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Publication number
WO2006074779A1
WO2006074779A1 PCT/EP2005/013350 EP2005013350W WO2006074779A1 WO 2006074779 A1 WO2006074779 A1 WO 2006074779A1 EP 2005013350 W EP2005013350 W EP 2005013350W WO 2006074779 A1 WO2006074779 A1 WO 2006074779A1
Authority
WO
WIPO (PCT)
Prior art keywords
cooling air
engine compartment
flow
engine
cab
Prior art date
Application number
PCT/EP2005/013350
Other languages
German (de)
English (en)
Inventor
Ronny Eysser
Ina Rastetter
Original Assignee
Daimlerchrysler 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 Daimlerchrysler Ag filed Critical Daimlerchrysler Ag
Publication of WO2006074779A1 publication Critical patent/WO2006074779A1/fr

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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
    • B60K11/00—Arrangement in connection with cooling of propulsion units
    • B60K11/08—Air inlets for cooling; Shutters or blinds therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D35/00—Vehicle bodies characterised by streamlining
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D35/00—Vehicle bodies characterised by streamlining
    • B62D35/001—For commercial vehicles or tractor-trailer combinations, e.g. caravans
    • 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
    • F01P2001/005—Cooling engine rooms

Definitions

  • the invention relates to a cooling air duct for an internal combustion engine of a semitrailer tractor with cab arranged in an engine compartment, comprising at least one inlet opening arranged in the region of the semitrailer tractor front for supplying cooling air, according to the preamble of claim 1.
  • the steering device In a cab driver's cab, the steering device is at the front and the engine is under the high cab or under an engine tunnel between the driver and the passenger.
  • a mechanical or hydraulic cab tilting device ensures access to the engine and other equipment, ie. H. Access to the engine and to other units takes place with the cab tipped forward.
  • cooling air ducts are known from the prior art, in which a radiator is arranged as part of a coolant circuit immediately behind the inlet opening of a front mask.
  • the cooling air flows around the radiator and accumulates in the engine compartment behind or accommodating the internal combustion engine. flows undirected over the most in the engine compartment open vehicle floor in the area from.
  • the performance of the internal combustion engine is often limited by the engine cooling, d. H . that limited in its physical dimensions radiator often can not be dimensioned so large that sufficient for a higher engine performance engine cooling is guaranteed.
  • the present invention is based on the object to develop a cooling air duct of the type mentioned in such a way that improved cooling of the engine is possible.
  • the invention is based on the idea of a cool air flowed engine compartment.
  • a cool air flowed engine compartment By providing a first flow connection between the at least one inlet opening and the engine compartment and a second flow connection between the engine compartment and at least one outlet opening into the environment in the region of a rear wall of the driver's cab for at least partial flow through the engine compartment receiving the internal combustion engine, cooling air is provided on the front surface, where the dynamic pressure is highest, introduced into the engine compartment, led for cooling on the engine as straight as possible along and after completed heat transfer through the relative to the cab rear outlet opening into the environment.
  • the at least one inlet opening and the at least one outlet opening are arranged substantially in a common horizontal plane below the cab, which is usually designed as Kippnostihaus. Then the cooling air flow is substantially in a horizontal plane, which brings the advantage of a low deflection and thus further reduced flow losses with it.
  • a relatively large flow of cooling air is produced when, at the location of the greatest dynamic pressure, namely in the region of a longitudinal central axis of the semitrailer tractor, a central inlet opening is formed in a bumper or in a front underrun protection of the semitrailer tractor.
  • a favorable with regard to the heat transfer flow guidance results when the first flow connection is designed such that the cooling air flow includes at least two of the engine horizontally and / or vertically flowing cooling air streams and at least some of the cooling air streams a separate second flow connection with outlet is assigned, wherein the outlet openings with the associated cooling air partial flows are substantially aligned.
  • the further air inlet ducts can be provided with at least one control flap for controlling the air flow.
  • Fig. l is a front perspective view of a
  • Tractor unit which is provided with a cooling air duct according to a preferred embodiment of the invention
  • Fig. 2 is a front perspective view of
  • Fig. 3 is a rear perspective view of
  • Fig. 1 is a perspective view of a tractor unit 1 with cab driver 2 shown, in which the steering is located at the front and the engine under the raised cab.
  • a mechanical or hydraulic cab tilting device ensures the engine accessibility, wherein the pivot axis is located in the front region of the tractor unit 1.
  • Fig. 2 shows the tractor unit 1 in a state in which the driver's cab 2 has been removed, so that an engine compartment 4 lying below a floor of the driver's cab 2 is visible, which engine is connected to the internal combustion engine 6, preferably additionally to the engine 6 and behind arranged gear 8 and other units of the tractor unit 1 receives.
  • the internal combustion engine 6 may be liquid or air cooled, preferably there is a liquid cooling with coolant circuit and radiator, which is flown to heat dissipation of a generated by the driving of the tractor unit 1 cooling air flow.
  • the radiator which is not of interest here, is arranged upstream of the internal combustion engine 6 in the direction of travel and is supplied, for example, with cooling air via inlet openings formed in the front 10 of the semitrailer tractor.
  • the tractor 1 has a novel cooling air guide such that for at least partial flow through the engine compartment 4 with a cooling air flow, a first flow connection 12 between at least one front inlet opening 14 and the engine compartment 4 and a second flow connection 16 between the engine compartment 4 and at least one with respect to the longitudinal extent of the tractor unit 1 in the region of a rear wall 18 of the cab 2 into the environment opening outlet opening 20, 22 is provided.
  • FIG. 2 shows, for example, a central inlet opening 14 in a bumper 24 of
  • Tractor 1 is provided, which is arranged in a horizontal plane below the cab 2. In this plane, there are also, for example, two outlet openings 20, 22 in the region of the rear wall 18 of the driver's cab 2. Instead of the bumper 24, the central inlet opening 14 could also be formed, for example, in a front underrun protection of the semitrailer tractor 1. Also, instead of a central inlet opening 14, a plurality of inlet openings distributed on the front 10 could be present.
  • the first flow connection 12 between the central inlet opening 14 and the engine compartment 4 may be designed such that the cooling air flow is split into at least two cooling air partial flows flowing horizontally and / or vertically around the internal combustion engine 6 and preferably also the transmission 8.
  • the preferred cooling air flow is split into at least two cooling air partial flows flowing horizontally and / or vertically around the internal combustion engine 6 and preferably also the transmission 8.
  • the cooling air flow entering through the central inlet opening 14 is branched, for example into two cooling air partial flows 26, 28 which flow horizontally around the internal combustion engine 6 and the transmission 8, that is to say in FIG. H . that the cooling air partial flows 26, 28 form substantially in a horizontal plane below the floor of the cab 2, in which also the central inlet opening 14 and the two outlet openings 20, 22 are arranged. Nevertheless, it is clear that the cooling air partial flows 26, 28 also have a certain vertical extension and not can be completely planar.
  • the splitting of the cooling air flow entering through the central inlet opening 14 into the two cooling air partial flows 26, 28 illustrated by arrows in FIG.
  • cooling air streams 26, 28 are aligned after entering the engine compartment 4 so that they flow as possible along the surface of the engine 6 and the transmission 8, which may be provided to increase the heat transfer, for example, with surface enlarging fins or cooling fins ,
  • the cooling air partial flows 26, 28 also detect the further units arranged in the engine compartment 4. Depending on the size of these components 6, 8, it may lead to minor deflections of the cooling air streams 26, 28 in the engine compartment, but j edoch larger deflections are to be avoided in order to keep the flow losses low.
  • the outlet openings 20, 22 are formed, preferably such that each of the cooling air partial streams 26, 28 is assigned its own outlet opening 20, 22. Since in the present case, for example, two horizontal cooling air partial flows 26, 28 are present, are located in the rear wall 18 of the cab 2, but below the bottom therefore two outlet openings 20, 22, which open into the environment, as shown in FIG. 2 and FIG. 3 clearly shows.
  • the outlet openings 20, 22 are essentially aligned with them associated cooling air partial streams 26, 28.
  • Flow connections 16 are determined, for example, by tests and adapted to the current actual flow conditions.
  • At least one further air inlet duct 36, 38 which is in flow connection with a region of the engine compartment 4 through which a cooling air partial flow 26, 28 can be provided, which is essentially transverse or perpendicular to the associated partial cooling air flow 26, 28 opens into the engine compartment 4.
  • two air intake passages 36, 38 extending symmetrically with respect to the longitudinal axis are provided on both side walls 32 of the semitrailer tractor 1.
  • the flow velocity of the corresponding partial cooling air stream 26, 28 also causes a venturi-effect based suction at the mouth of the respective air inlet duct 36, 38 to entrain the air in the respective air inlet duct 36, 38 and into the associated cooling air partial stream 26, 28 integrated.
  • the outflow of these additional, sucked through the air inlet ducts 36, 38 cooling air is then also via the outlet openings 20, 22, which for guiding the now magnifying Cooling air streams must be sized accordingly large.
  • Control flaps may be provided for controlling the additional cooling air supplied through the air inlet channels 36, 38, wherein the gill-like air baffles 40 are designed to be flap-like in order to vary the flow cross-section through the air inlet channels 36, 38 or around the air inlet channels 36, 38 completely close on the inflow side.

Abstract

Système de guidage d'air de refroidissement d'un moteur à combustion interne (6) placé dans le compartiment moteur d'un tracteur (1) de train routier pourvu d'une cabine (2) de conducteur. Ledit système comporte au moins un orifice d'entrée (14) placé dans la zone de l'avant (10) du tracteur de train routier et destiné à permettre l'entrée d'air de refroidissement. Selon la présente invention, pour qu'un flux d'air de refroidissement (26, 28) puisse traverser au moins partiellement un compartiment moteur (4) contenant au moins le moteur à combustion interne (6), ledit système comporte une première liaison d'écoulement (12) entre l'orifice d'entrée (14) au moins et le compartiment moteur (4) et une seconde liaison d'écoulement (16) entre le compartiment moteur (4) et au moins un orifice de sortie (20, 22) situé dans la zone de la paroi arrière (18) de la cabine (2) du conducteur et débouchant dans l'environnement.
PCT/EP2005/013350 2005-01-15 2005-12-13 Systeme de guidage d'air de refroidissement d'un moteur a combustion interne place dans le compartiment moteur d'un tracteur de train routier WO2006074779A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005001959.5 2005-01-15
DE200510001959 DE102005001959A1 (de) 2005-01-15 2005-01-15 Kühlluftführung eines in einem Motorraum angeordneten Verbrennungsmotors einer Sattelzugmaschine

Publications (1)

Publication Number Publication Date
WO2006074779A1 true WO2006074779A1 (fr) 2006-07-20

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Family Applications (1)

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PCT/EP2005/013350 WO2006074779A1 (fr) 2005-01-15 2005-12-13 Systeme de guidage d'air de refroidissement d'un moteur a combustion interne place dans le compartiment moteur d'un tracteur de train routier

Country Status (2)

Country Link
DE (1) DE102005001959A1 (fr)
WO (1) WO2006074779A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009134186A1 (fr) * 2008-04-29 2009-11-05 Scania Cv Ab Aménagement de refroidissement d’une zone derrière un moteur de véhicule
EP2371682A3 (fr) * 2010-04-01 2013-11-06 Behr GmbH & Co. KG Conduite d'air froid
FR3012787A1 (fr) * 2013-11-07 2015-05-08 Peugeot Citroen Automobiles Sa Dispositif pour reduire la trainee aerodynamique d’un vehicule automobile

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009023531A1 (de) * 2009-05-30 2010-12-02 Bayerische Motoren Werke Aktiengesellschaft Kühlluftführung zu wenigstens einem Bauteil, das von einem Motor eines Kraftfahrzeugs erwärmt ist
DE102009042443B4 (de) * 2009-09-22 2020-12-31 Röchling Automotive AG & Co. KG Luftleiteinrichtung für ein Kraftfahrzeug
DE102009053769B4 (de) * 2009-11-18 2014-02-06 Man Truck & Bus Ag Vorrichtung zur Regelung einer Luftzufuhr zu einem Motorraum eines Kraftfahrzeugs

Citations (4)

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Publication number Priority date Publication date Assignee Title
US3882951A (en) * 1973-01-22 1975-05-13 Hallamore Inc Quiet slide out engine vehicle
US4114714A (en) * 1975-06-13 1978-09-19 Hans List Motor vehicle having sound-suppressing engine enclosure
GB1528044A (en) * 1975-07-18 1978-10-11 British Leyland Uk Ltd Motor vehicles
DE2722101A1 (de) * 1977-05-16 1978-11-23 Steyr Daimler Puch Ag Gekapselter wassergekuehlter kraftfahrzeugmotor

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DE2123215A1 (fr) * 1971-05-11 1972-11-23
GB2038938A (en) * 1978-11-18 1980-07-30 Fodens Ltd Cooling I.C. Engines
JPH04191417A (ja) * 1990-11-26 1992-07-09 Hino Motors Ltd 車両用パワーユニットの騒音低減装置
FR2679861A1 (fr) * 1991-07-31 1993-02-05 Renault Vehicules Ind Vehicule industriel comportant un moteur insonorise et deux radiateurs places de chaque cote du moteur.
JPH08225021A (ja) * 1995-02-21 1996-09-03 Mitsubishi Motors Corp 車両のエンジン騒音低減装置
JP2000280762A (ja) * 1999-03-31 2000-10-10 Nissan Diesel Motor Co Ltd 車両のエンジンルーム冷却装置
SE513483C2 (sv) * 1999-09-29 2000-09-18 Scania Cv Ab Motorfordon med framtill monterad motor

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3882951A (en) * 1973-01-22 1975-05-13 Hallamore Inc Quiet slide out engine vehicle
US4114714A (en) * 1975-06-13 1978-09-19 Hans List Motor vehicle having sound-suppressing engine enclosure
GB1528044A (en) * 1975-07-18 1978-10-11 British Leyland Uk Ltd Motor vehicles
DE2722101A1 (de) * 1977-05-16 1978-11-23 Steyr Daimler Puch Ag Gekapselter wassergekuehlter kraftfahrzeugmotor

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009134186A1 (fr) * 2008-04-29 2009-11-05 Scania Cv Ab Aménagement de refroidissement d’une zone derrière un moteur de véhicule
EP2282908A1 (fr) * 2008-04-29 2011-02-16 Scania CV AB Aménagement de refroidissement d une zone derrière un moteur de véhicule
EP2282908A4 (fr) * 2008-04-29 2011-06-08 Scania Cv Ab Aménagement de refroidissement d une zone derrière un moteur de véhicule
EP2371682A3 (fr) * 2010-04-01 2013-11-06 Behr GmbH & Co. KG Conduite d'air froid
FR3012787A1 (fr) * 2013-11-07 2015-05-08 Peugeot Citroen Automobiles Sa Dispositif pour reduire la trainee aerodynamique d’un vehicule automobile

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