WO2009134186A1 - Arrangement for cooling an area behind a vehicle engine - Google Patents
Arrangement for cooling an area behind a vehicle engine Download PDFInfo
- Publication number
- WO2009134186A1 WO2009134186A1 PCT/SE2009/050212 SE2009050212W WO2009134186A1 WO 2009134186 A1 WO2009134186 A1 WO 2009134186A1 SE 2009050212 W SE2009050212 W SE 2009050212W WO 2009134186 A1 WO2009134186 A1 WO 2009134186A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- duct
- vehicle
- inlet aperture
- aperture
- cab
- Prior art date
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
- B60K11/00—Arrangement in connection with cooling of propulsion units
- B60K11/08—Air inlets for cooling; Shutters or blinds therefor
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
- B60Y2200/00—Type of vehicle
- B60Y2200/10—Road Vehicles
- B60Y2200/14—Trucks; Load vehicles, Busses
-
- 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 device for cooling a region behind a vehicle engine below or adjacent to a rear side of a cab of a truck.
- Components situated below or adjacent to a lower rear side of a truck cab are often subject to high temperatures from the vehicle's engine, possibly including further heat-generating turbo units.
- An object of the invention is to provide a separate cooling device which can in a simple manner cool the region behind the vehicle engine.
- the device comprises a duct for leading outside air into said region, which duct extends rearwards and inwards towards said region from an inlet aperture at one side of the vehicle. This makes it possible for the heated air behind the engine to be mixed with inflowing cooler outside air which absorbs heat from vehicle components behind the vehicle engine. It may also make it possible to reduce the load on the engine's conventional cooling system comprising an energy-absorbing fan.
- the duct has a flow cross-section which increases towards the region behind the vehicle engine. This makes it possible for suction to be created in the duct in order to lead cooling outside air into the region behind the vehicle engine.
- the inlet aperture may be provided at an upper portion of a mudguard or air deflector, in which case there is no need for any portion of the duct to be in contact with the resilient cab.
- the upper portion of the mudguard may comprise a vertical flange for shielding a space between a chassis and the cab.
- the face that such a flange is often already part of the existing mudguard configuration may simplify implementation of the cooling device.
- the inlet aperture may also be arranged in the cab's lower edge or rear edge if the duct is mounted firmly on the cab.
- the inlet aperture may have an aperture cross-section which is parallel with a longitudinal side of the vehicle. This may be the case if the pressure behind the engine when the vehicle is in motion is less than at the outside of the vehicle.
- the aperture cross-section may face away from the vehicle's direction of movement in order to use the draught created by its movement to force outside air into the duct. Otherwise the aperture cross-section may face towards the direction of movement.
- the inlet aperture may have an aerodynamic configuration, e.g. a gill aperture or NACA aperture, for the sake of greater effectiveness.
- FIG. 1 is a schematic sideview, with portions cut away, of a truck provided with a cooling device according to the invention
- FIG. 2 is a view from above corresponding to FIG. 1 ;
- FIG. 3 is a schematic cross-sectional view of a truck chassis along the line 3- 3 in FIG. 1 ;
- FIG. 4 is a perspective view as seen from the rear, with portions cut away, of a truck provided with a cooling device according to the invention.
- FIGS. 1 and 2 The schematic depiction in FIGS. 1 and 2 is of a rear portion of a truck 10 with a chassis 14.
- the chassis 14 has a pair of longitudinal frame members 16 forming part of a frame structure to which a cab 12, an engine 18, a gearbox 20 and a pair of vehicle wheels 22 are fitted in a manner not depicted in more detail.
- the engine 18 may also have a turbo unit 24 (FIG. 2).
- the frame structure of the chassis 14 also supports in a manner not depicted in more detail a pair of mudguards 30 (FIG. 3) which each have at their outside a side panel 32 (FIG. 1).
- Each side panel 32 usually constitutes a lower extension of the associated outside of the cab 12 which is resiliently suspended relative to the chassis 14.
- each side panel 32 has at its upper side a flange 34, a so-called "cockscomb", protruding upwards within the lower edge 13 of the cab 12 (FIG. 1 ).
- the height of the flange 34 is such that it always overlaps the cab 12, i.e. its upper edge is always higher than the lower edge 13 of the resilient cab 12, in order to provide shielding relative to the interior space of the vehicle 10.
- a duct 40 is provided to lead outside air in from an inlet aperture 42 at the outside of the vehicle 10 to an outlet aperture 44 at a region behind the engine 18.
- the duct 40 extends obliquely rearwards and downwards from the inlet aperture 42 to the region behind the engine 18.
- the examples depicted have a duct 40 on each side of the vehicle 14.
- the duct 40 may take the form of a shell structure made of, for example, plastic and its underside may in a suitable undepicted manner be supported by and connected to adjoining mudguards 30 (FIG. 3) and possibly also to adjoining frame members 16. However, the duct 40 may also be fitted to the underside of the cab.
- the left side of FIG. 3 also shows how the inlet aperture 42 of the duct 40 may be arranged in an air deflector 50.
- the duct 40 also has an increasing flow cross-section towards its orifice to the region behind the engine 18. This makes possible the formation of a negative pressure in the flow direction in the duct 40, thereby making it possible to draw outside air in from the inlet aperture 42 to the region behind the engine 18.
- the inlet aperture 42 may be accommodated in the flange 34 protruding upwards from the side panel 32.
- the aperture cross-section of the inlet aperture 42 may be oriented in various ways.
- the aperture cross-section of the inlet aperture 42 may be oriented in the same plane as the upwardly protruding flange 34, as illustrated in FIG. 1.
- the inlet aperture 42 may possibly be provided with gill apertures 48 directed rearwards (FIG. 2).
- the cross-section of the inlet aperture 42 may, as illustrated in FIGS. 2 and 4, face more or less towards or away from the direction of movement of the vehicle.
- the inlet aperture 42 may also have a grille to prevent foreign objects from entering the duct 40.
- the outlet aperture 44 of the duct 40 may be positioned in various ways close to the region behind the engine 18. As illustrated on the upper duct 40 in FIG. 2, the outlet aperture 44 may end obliquely ahead of a rear cab suspension 26. As illustrated on the lower duct 40 in FIG. 2, the outlet aperture 44 may also be arranged downstream of the rear cab suspension 26. Components of the cab suspension 26 may then extend through apertures 46 (only one is depicted) in the duct 40. In cases where heat-sensitive components of the cab suspension 26, such as an undepicted rubber bellows, are then situated outside, e.g. above, the duct 40, the duct 40 may in an undepicted manner be adapted, e.g. be branched, in order to provide these components also with cooling outside air.
- the invention may be varied in many different ways.
- the duct 42 may be provided with various known flow arrangements for improving the cooling air flow. It is at least conceivable to also provide a fan in the duct.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Transportation (AREA)
- General Engineering & Computer Science (AREA)
- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
- Body Structure For Vehicles (AREA)
Abstract
A device for cooling a region behind a vehicle engine below or adjacent to a rear side of the cab (12) of a truck (10). According to the invention, a duct (40) is provided to lead outside air into the region behind the vehicle engine, which duct extends rearwards and inwards towards said region from an inlet aperture (42) at one side of the vehicle.
Description
Arrangement for cooling an area behind a vehicle engine
TECHNICAL FIELD
The invention relates to a device for cooling a region behind a vehicle engine below or adjacent to a rear side of a cab of a truck.
BACKGROUND
Components situated below or adjacent to a lower rear side of a truck cab, such as gearbox and cab suspension, are often subject to high temperatures from the vehicle's engine, possibly including further heat-generating turbo units. This applies particularly to trucks with wide engines, e.g. V8 engines, which during operation may create at their rear side a stationary vortex of heated air which may be directly harmful to certain components. It is therefore desirable to be able to cool the region behind the engine and thereby save costs by not having to use expensive materials resistant to high temperatures for such items as rubber and plastic parts, gaskets and electronic components.
SUMMARY OF THE INVENTION
An object of the invention is to provide a separate cooling device which can in a simple manner cool the region behind the vehicle engine.
This is achieved by the features indicated in the claims set out below. According to a version of the invention, the device comprises a duct for leading outside air into said region, which duct extends rearwards and inwards towards said region from an inlet aperture at one side of the vehicle. This makes it possible for the heated air behind the engine to be mixed with inflowing cooler outside air which absorbs heat from vehicle components behind the vehicle engine. It may also make it possible to reduce the load on the engine's conventional cooling system comprising an energy-absorbing fan.
According to an embodiment, the duct has a flow cross-section which increases towards the region behind the vehicle engine. This makes it possible for suction to be created in the duct in order to lead cooling outside air into the region behind the vehicle engine.
The inlet aperture may be provided at an upper portion of a mudguard or air deflector, in which case there is no need for any portion of the duct to be in contact with the resilient cab.
The upper portion of the mudguard may comprise a vertical flange for shielding a space between a chassis and the cab. The face that such a flange is often already part of the existing mudguard configuration may simplify implementation of the cooling device.
The inlet aperture may also be arranged in the cab's lower edge or rear edge if the duct is mounted firmly on the cab. The inlet aperture may have an aperture cross-section which is parallel with a longitudinal side of the vehicle. This may be the case if the pressure behind the engine when the vehicle is in motion is less than at the outside of the vehicle.
For better effectiveness, the aperture cross-section may face away from the vehicle's direction of movement in order to use the draught created by its movement to force outside air into the duct. Otherwise the aperture cross-section may face towards the direction of movement.
The inlet aperture may have an aerodynamic configuration, e.g. a gill aperture or NACA aperture, for the sake of greater effectiveness.
Other features and advantages of the invention may be indicated by the claims and following description of embodiment examples.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a schematic sideview, with portions cut away, of a truck provided with a cooling device according to the invention; FIG. 2 is a view from above corresponding to FIG. 1 ;
FIG. 3 is a schematic cross-sectional view of a truck chassis along the line 3- 3 in FIG. 1 ; and
FIG. 4 is a perspective view as seen from the rear, with portions cut away, of a truck provided with a cooling device according to the invention.
DETAILED DESCRIPTION OF EMBODIMENT EXAMPLES The schematic depiction in FIGS. 1 and 2 is of a rear portion of a truck 10 with a chassis 14. The chassis 14 has a pair of longitudinal frame members 16 forming part of a frame structure to which a cab 12, an engine 18, a gearbox 20 and
a pair of vehicle wheels 22 are fitted in a manner not depicted in more detail. The engine 18 may also have a turbo unit 24 (FIG. 2).
The frame structure of the chassis 14 also supports in a manner not depicted in more detail a pair of mudguards 30 (FIG. 3) which each have at their outside a side panel 32 (FIG. 1). Each side panel 32 usually constitutes a lower extension of the associated outside of the cab 12 which is resiliently suspended relative to the chassis 14. In the example depicted, each side panel 32 has at its upper side a flange 34, a so-called "cockscomb", protruding upwards within the lower edge 13 of the cab 12 (FIG. 1 ). The height of the flange 34 is such that it always overlaps the cab 12, i.e. its upper edge is always higher than the lower edge 13 of the resilient cab 12, in order to provide shielding relative to the interior space of the vehicle 10.
According to the invention, a duct 40 is provided to lead outside air in from an inlet aperture 42 at the outside of the vehicle 10 to an outlet aperture 44 at a region behind the engine 18. In the examples depicted, the duct 40 extends obliquely rearwards and downwards from the inlet aperture 42 to the region behind the engine 18. Although it may in some cases be sufficient to provide only one duct 40, the examples depicted have a duct 40 on each side of the vehicle 14.
The duct 40 may take the form of a shell structure made of, for example, plastic and its underside may in a suitable undepicted manner be supported by and connected to adjoining mudguards 30 (FIG. 3) and possibly also to adjoining frame members 16. However, the duct 40 may also be fitted to the underside of the cab. The left side of FIG. 3 also shows how the inlet aperture 42 of the duct 40 may be arranged in an air deflector 50.
The duct 40 also has an increasing flow cross-section towards its orifice to the region behind the engine 18. This makes possible the formation of a negative pressure in the flow direction in the duct 40, thereby making it possible to draw outside air in from the inlet aperture 42 to the region behind the engine 18. As illustrated in the various drawings, the inlet aperture 42 may be accommodated in the flange 34 protruding upwards from the side panel 32. Depending on the pressure difference between the inlet aperture 42 and the outlet aperture 44 during operation, the aperture cross-section of the inlet aperture 42 may be oriented in various ways. If the pressure at the outlet aperture 44 is substantially less than the pressure at the inlet aperture 42, the aperture cross-section of the inlet aperture 42 may be oriented in the same plane as the upwardly protruding flange 34,
as illustrated in FIG. 1. In that case the inlet aperture 42 may possibly be provided with gill apertures 48 directed rearwards (FIG. 2). If in the opposite case it is necessary for outside air to be forced into the duct 40 when the vehicle is in motion, the cross-section of the inlet aperture 42 may, as illustrated in FIGS. 2 and 4, face more or less towards or away from the direction of movement of the vehicle. The inlet aperture 42 may also have a grille to prevent foreign objects from entering the duct 40.
The outlet aperture 44 of the duct 40 may be positioned in various ways close to the region behind the engine 18. As illustrated on the upper duct 40 in FIG. 2, the outlet aperture 44 may end obliquely ahead of a rear cab suspension 26. As illustrated on the lower duct 40 in FIG. 2, the outlet aperture 44 may also be arranged downstream of the rear cab suspension 26. Components of the cab suspension 26 may then extend through apertures 46 (only one is depicted) in the duct 40. In cases where heat-sensitive components of the cab suspension 26, such as an undepicted rubber bellows, are then situated outside, e.g. above, the duct 40, the duct 40 may in an undepicted manner be adapted, e.g. be branched, in order to provide these components also with cooling outside air.
The invention may be varied in many different ways. For example, the duct 42 may be provided with various known flow arrangements for improving the cooling air flow. It is at least conceivable to also provide a fan in the duct.
The description set out above is primarily intended to facilitate comprehension and no limitations of the invention are to be inferred therefrom. The modifications which will be obvious to one skilled in the art from perusing the description may be implemented without departing from the concept of the invention or the scope of the claims set out below.
Claims
1. A device for cooling a region behind a vehicle engine (18) below or adjacent to a rear side of the cab (12) of a truck (10), c h a r a c t e r i s e d by a duct (40) for leading outside air into said region, which duct extends rearwards and inwards towards said region from an inlet aperture (42) at one side of the vehicle.
2. A device according to claim 1 , in which the duct (40) has a flow cross-section increasing towards said region.
3. A device according to claim 1 or 2, in which the inlet aperture is arranged at an upper portion of a mudguard (30).
4. A device according to claim 3, in which the upper portion comprises a vertical flange (34) for shielding a space between a chassis (14) and the cab (12).
5. A device according to any one of the foregoing claims, in which the duct (40) is arranged at the underside of the cab.
6. A device according to claim 1 or 2, in which the inlet aperture is arranged adjacent to an air deflector (50).
7. A device according to claim 1 or 2, in which the inlet aperture (42) has an aperture cross-section which is parallel with a longitudinal side of the vehicle (10).
8. A device according to any one of claims 1-7, in which the inlet aperture (42) has an aperture cross-section which faces away from a direction of movement of the vehicle (10).
9. A device according to any one of claims 1-7, in which the inlet aperture (42) has an aperture cross-section which faces towards a direction of movement of the vehicle (10).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP09739067A EP2282908B1 (en) | 2008-04-29 | 2009-02-26 | Arrangement for cooling an area behind a vehicle engine |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE0800968-0 | 2008-04-29 | ||
SE0800968A SE532307C2 (en) | 2008-04-29 | 2008-04-29 | Device for cooling an area behind a vehicle engine |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2009134186A1 true WO2009134186A1 (en) | 2009-11-05 |
Family
ID=41255249
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/SE2009/050212 WO2009134186A1 (en) | 2008-04-29 | 2009-02-26 | Arrangement for cooling an area behind a vehicle engine |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP2282908B1 (en) |
SE (1) | SE532307C2 (en) |
WO (1) | WO2009134186A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3118091A3 (en) * | 2015-07-17 | 2017-03-22 | MAN Truck & Bus AG | Motor vehicle, preferably suitcase trucks with motor and/or aggregate cooling |
US9752491B2 (en) | 2013-10-07 | 2017-09-05 | Denso International America, Inc. | Powered air ram with energy recovery |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4081050A (en) * | 1977-02-02 | 1978-03-28 | International Harvester Company | Front engine tractor having transverse midship mounted heat exchanger |
US5042603A (en) * | 1990-04-23 | 1991-08-27 | Navistar International Transportation Corp. | Engine air intake apparatus |
JP2000280762A (en) * | 1999-03-31 | 2000-10-10 | Nissan Diesel Motor Co Ltd | Vehicular engine room cooling system |
WO2006074779A1 (en) * | 2005-01-15 | 2006-07-20 | Daimlerchrysler Ag | Cooling air conduit of a combustion engine of a semitrailer, which is located in an engine compartment |
-
2008
- 2008-04-29 SE SE0800968A patent/SE532307C2/en unknown
-
2009
- 2009-02-26 EP EP09739067A patent/EP2282908B1/en not_active Not-in-force
- 2009-02-26 WO PCT/SE2009/050212 patent/WO2009134186A1/en active Application Filing
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4081050A (en) * | 1977-02-02 | 1978-03-28 | International Harvester Company | Front engine tractor having transverse midship mounted heat exchanger |
US5042603A (en) * | 1990-04-23 | 1991-08-27 | Navistar International Transportation Corp. | Engine air intake apparatus |
JP2000280762A (en) * | 1999-03-31 | 2000-10-10 | Nissan Diesel Motor Co Ltd | Vehicular engine room cooling system |
WO2006074779A1 (en) * | 2005-01-15 | 2006-07-20 | Daimlerchrysler Ag | Cooling air conduit of a combustion engine of a semitrailer, which is located in an engine compartment |
Non-Patent Citations (1)
Title |
---|
See also references of EP2282908A4 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9752491B2 (en) | 2013-10-07 | 2017-09-05 | Denso International America, Inc. | Powered air ram with energy recovery |
EP3118091A3 (en) * | 2015-07-17 | 2017-03-22 | MAN Truck & Bus AG | Motor vehicle, preferably suitcase trucks with motor and/or aggregate cooling |
Also Published As
Publication number | Publication date |
---|---|
EP2282908B1 (en) | 2012-10-03 |
EP2282908A1 (en) | 2011-02-16 |
SE0800968L (en) | 2009-10-30 |
EP2282908A4 (en) | 2011-06-08 |
SE532307C2 (en) | 2009-12-08 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP2005297888A (en) | Body front structure of automobile | |
JP2005096684A (en) | Wind guide structure of car body front part | |
JP6221547B2 (en) | Under cover mounting structure | |
US9770973B1 (en) | Engine compartment assembly and a vehicle | |
US8763738B2 (en) | Front end structure for vehicle | |
US20140265435A1 (en) | Bumper with enhanced cooling and associated drag reduction device | |
JP2007038838A (en) | Car body lower part structure for automobile | |
EP3297866B1 (en) | A commercial vehicle comprising a superstructure and a chassis | |
JP5364672B2 (en) | Cooling air introduction structure for vehicles | |
JP5196113B2 (en) | Intake device for vehicle engine | |
EP2282908B1 (en) | Arrangement for cooling an area behind a vehicle engine | |
CN103465856A (en) | Engine splash guard assembly used for vehicle | |
JP2016078765A (en) | Under cover | |
JP2009208745A (en) | Arrangement structure of intake duct | |
JP6504140B2 (en) | Vehicle cooling system | |
WO2006040814A1 (en) | Truck | |
JP2016137824A (en) | undercover | |
JP2007290465A (en) | Vehicle front end structure | |
CN101557956A (en) | Auxiliary cooler for truck cap and a vehicle provided with a cooling member | |
JP2016055751A (en) | Undercover structure of vehicle | |
KR20190051551A (en) | Lower air guard for cooling module of vehicle | |
WO2021075550A1 (en) | Wind guide mechanism and front structure for vehicle comprising wind guide mechanism | |
GB2507950A (en) | High mounted stop light, vent and grille | |
KR101771007B1 (en) | Thermal decomposition performance is improved engine room Undercover | |
KR101880983B1 (en) | Subframe rear undercover using glass fiber reinforced thermoplastic resin |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 09739067 Country of ref document: EP Kind code of ref document: A1 |
|
DPE1 | Request for preliminary examination filed after expiration of 19th month from priority date (pct application filed from 20040101) | ||
NENP | Non-entry into the national phase |
Ref country code: DE |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2009739067 Country of ref document: EP |