GB2512143A - Cooling device for cooling an engine compartment of a motor vehicle and motor vehicle - Google Patents

Cooling device for cooling an engine compartment of a motor vehicle and motor vehicle Download PDF

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Publication number
GB2512143A
GB2512143A GB1305338.4A GB201305338A GB2512143A GB 2512143 A GB2512143 A GB 2512143A GB 201305338 A GB201305338 A GB 201305338A GB 2512143 A GB2512143 A GB 2512143A
Authority
GB
United Kingdom
Prior art keywords
air
engine compartment
cooling
motor vehicle
cooling device
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.)
Withdrawn
Application number
GB1305338.4A
Other versions
GB201305338D0 (en
Inventor
Gangumalla Venkat Rao
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.)
Mercedes Benz Group AG
Original Assignee
Daimler 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 Daimler AG filed Critical Daimler AG
Priority to GB1305338.4A priority Critical patent/GB2512143A/en
Publication of GB201305338D0 publication Critical patent/GB201305338D0/en
Publication of GB2512143A publication Critical patent/GB2512143A/en
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00271—HVAC devices specially adapted for particular vehicle parts or components and being connected to the vehicle HVAC unit
    • 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
    • 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
    • B60K11/06—Arrangement in connection with cooling of propulsion units with air cooling
    • 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
    • F01P9/00—Cooling having pertinent characteristics not provided for in, or of interest apart from, groups F01P1/00 - F01P7/00
    • F01P9/06—Cooling having pertinent characteristics not provided for in, or of interest apart from, groups F01P1/00 - F01P7/00 by use of refrigerating apparatus, e.g. of compressor or absorber type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00007—Combined heating, ventilating, or cooling devices
    • B60H1/00021—Air flow details of HVAC devices
    • B60H2001/0015—Temperature regulation
    • B60H2001/00178—Temperature regulation comprising an air passage from the HVAC box to the exterior of the cabin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00271—HVAC devices specially adapted for particular vehicle parts or components and being connected to the vehicle HVAC unit
    • B60H2001/003—Component temperature regulation using an air flow
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)

Abstract

A cooling device 10 for cooling an engine compartment 12 of a motor vehicle, the cooling device comprising at least one fan 16 for moving air and at least one duct 32 for guiding the air into the engine compartment, wherein the cooling device comprises at least one cooling apparatus 30 for cooling the air. The duct may bypass the interior of the vehicle and the cooling apparatus may be the air-conditioning system of the vehicle.

Description

Cooling Device for Cooling an Engine Compartment of a Motor Vehicle and Motor Vehicle The invention relates to a cooling device according to the preamble of patent claim 1 as well as a motor vehicle.
Motor vehicles comprising engine compartments are well known from the series production of motor vehicles. The engine compartment serves for installing a motor for driving the motor vehicle. In other words, the motor is at least partially arranged within the engine compartment. The motor, for example, is configured as an internal combustion engine.
Usually, the motor vehicle comprises numerous other components which are arranged within the engine compartment. While driving the motor vehicle, the motor can significantly heat up. Thereby, the engine compartment and particularly the other components of the motor vehicle are heated up due to heat rejection by the motor.
A particularly intense heating of the engine compartment and, thus, of the other components can occur when the motor is operated at high loads and when the ambient temperature is very high. Especially components arranged within the engine compartment * and made of a plastic material can be prone to a reduced life and failures due to high : . temperature exposure. *
In US 200810060591 Al a cooling device for cooling an engine compartment of a motor *.** vehicle can be found. The cooling device comprises at least one fan which is also referred to as blower. The fan serves for moving air. The cooling device also comprises at least one duct far guiding the air into the engine compartment. In other words, the air which is moved by the fan is guided by the duct into the engine compartment.
*...S* * It is an object of the present invention to provide a cooling device as well as a motor vehicle which facilitates a particularly good cooling of the engine compartment.
This object is solved by a cooling device having the features of patent claim 1 and a motor vehicle having the features of patent claim 5. Advantageous embodiments with expedient and non-trivial developments of the invention are indicated in the other patent claims.
In order to provide a cooling device for cooling an engine compartment of a motor vehicle of the kind indicated in the preamble of patent claim 1, which facilitates an improved and particularly good cooling of the engine compartment, according to the present invention the cooling device comprises at least one cooling apparatus for cooling the air which is guided into the engine compartment. In other words, the temperature of the air moved by the fan through the duct into the engine compartment can be reduced by means of the cooling apparatus. Thereby, the engine compartment can be supplied with the air having a very low temperature. Thus, the engine compartment and in particular components arranged within the engine compartment can be cooled very effectively.
By supplying the air having a very low temperature to the engine compartment, especially components which are arranged within the engine compartment and made of a plastic material can be cooled. Usually, such components made of a plastic material are prone to reduced life and failures due to high temperature exposure. By cooling such components, the temperature of the components can be kept low. As a result, the components have an increased life.
Further advantages, features and details of the invention derive from the following description of a preferred embodiment as well as from the drawing. The features and feature combinations previously mentioned in thedescription as well as the features and feature combinations mentioned in the following description of the figures and/or shown in the figures alone can be employed not only in the respective indicated combination but also in any other combinations or taken alone without leaving the scope of the invention.
The drawing shows in: * *** Fig. 1 a schematic sectional view of a cooling device for cooling an engine compartment of a motor vehicle, the cooling device comprising at least one ***.*e fan for moving air, at least on duct for guiding the air into the engine compartment and at least one cooling apparatus for cooling the air: and Fig. 2 a flow chart for illustrating a method for operating the cooling device.
In the figures the same elements or elements having the same functions are equipped with the same reference. -Fig. I shows a cooling device 10 of a motor vehicle. The cooling device 10 serves for cooling an engine compartment 12 of the motor vehicle. In Fig. l,the engine compartment 12 is shown very schematically. The cooling device 10 comprises an air-conditioning system 14 of the motor vehicle. The air-conditioning system 14 is also referred to as HVAC system.
The air-conditioning system 14 comprises a fan 16 for moving air. For example! the fan 16 is configured as a centrifugal fan. The air-conditioning system 14 also comprises a first air duct 18 bounded by a first duct element 20. The first air duct 18 has two inlet openings 22 and 24 through which air sucked by the fan 16 can flow into the air duct 18 to the fan 16. In other words, the fan 16 can suck air into the air duct 18 through the inlet openings 22, 24 in dependency on which of the inlet openings 22, 24 is open.
For closing and opening the inlet openings 22, 24 the air-conditioning system 14 comprises a first flap 26. The first flap 26 is movable between a first position and a second position. The first position of the flap 26 is shown in Fig. 1. In the first position the inlet opening 22 is closed and the inlet opening 24 is open. In the second position the inlet opening 24 is closed by the flap 26 and the inlet opening 22 is open.
In the first position the fan 16 can suck air from an interior of the motor vehicle into the duct 18. This is illustrated by a directional arrow 28. The interior is also referred to as cabin or passenger compartment. Within the cabin the driver and passengers of the motor vehicle can stay while driving in the motor vehicle.
If the flap 26 is in its second position the fan 16 can suck fresh air from the surroundings of the motor vehicle into the duct 18. Thus, the air-conditioning system 14 is operated in a so-called circulation mode if the flap 26 is in its first position. The air-conditioning system 14 is operated in a so-called fresh air mode if the flap 26 is in its second position.
* For example, the air-conditioning system 14 can also be operated in a so-called mixing * mode. In the mixing mode the flap 26 is moved in a third position in which both the inlet opening 22 and the inlet opening 24 are open. Thereby, the fan 16 can suck air from the * interior and from the surroundings into the duct 16, The air which is sucked by the fan 16 is moved through a second air duct of the cooling device 10, the second air duct being designated as a whole with reference 32. The second air duct 32 is bounded by a second duct element 34 which can be integrally designed with the first duct element 20. In other words, the first duct element 20 can be formed in one piece with the second duct element 34.
The air-conditioning system 14 (HVAC system) of the motor vehicle comprises a cooling apparatus in the form clan evaporator 30. The evaporator 30 is arranged within the air duct 32 and serves for cooling the air which is moved by the fan 16. The evaporator 30 is arranged in a refrigerant cycle through which a refrigerant of the air-conditioning system 14 can flow. The air-conditioning system 14 also comprises a compressor for compressing the refrigerant, a condenser for condensing the compressed refrigerant and an expansion valve for expanding the refrigerant. The compressor, the condenser and the expansion valve of the air-conditioning system 14 are not shown in Fig. 1. By evaporating the refrigerant by means of the evaporator 30, the refrigerant cools down thereby cooling down the evaporator 30. The air moved by the fan 16 can flow around the evaporator 30 so that the air can be cooled down by means of the evaporator 30.
The air duct 32 has two through openings 36 and 38 which are arranged downstream of the evaporator 30 and through which the air moved by the fan 16 can flow. The cooling device 10 also comprises a second flap 40 which is movable between a third position shown in Fig. 1 and a fourth position. In the third position the through opening 36 is closed so that the air cannot flow through the through opening 38. In the third position the through opening 38 is open so that the air moved by the fan 16 can flow through the through opening 36. This is illustrated by a directional arrow 42. * . .
The fourth position of the flap 40 is not shown in Fig. 1. In the fourth position the through opening 38 is open and the through opening 36 is closed. Furthermore, the cooling device has a heating element 44 for heating the air to a predeterminable temperature. This can be realised in the third position of the flap 40 in which the air can flow around the heating element 44. * S S *S S
The air duct 32 has further through openings 46 and 48 which are arranged downstream *55 55.
* of the heating element 44. Moreover, the cooling device 10 comprises a guiding device 49 having a third flap 50 and a fourth flap 52. The third flap 50 is used to open and close the through openings 46, 48. The flap 50 is movable between a fifth position shown in Fig. I and a sixth position not shown in Fig. 1. In the fifth position the through opening 48is
S
closed and the through opening 46 is open so that the air cannot flow through the through opening 48 but through the through opening 46 and into the interior of the motor vehicle.
This is illustrated by a directional arrow 53. For example, in the fifth position of the flap 50 the air can flow into a footwell of the interior.
In the sixth position of the flap 50 the air can flow through the through opening 46 into an air distribution element 54 of the cooling device 10. The flap 52 and a further flap 56 of the guiding device 49 are arranged in the air distribution element 54. The guiding device 49 having the flaps 50, 52, 56 serves for guiding the air flowing through the air duct 32 to desired locations, i.e. where the cooled or heated air is needed.
The distribution element 54 has three through openings 58, 60, 62 of the air duct 32. The flap 52 is movable between a seventh position in which the through opening 62 is open and an eighth position in which the through opening 62 is closed. The flap 56 is movable between a ninth position in which the through opening 58 is open and the through opening 60 is closed and a tenth position in which the through opening 58 is closed and the through opening 60 is open. For example1 the flap 56 can also be moved in an eleventh position in which both the through opening 58 and the through opening 60 are open.
Ifthethrough opening 62 is closed, the aircannotfiow intothe engine compartment 12. If the through openings 58, 60 are open, the air can flow through the through openings 58, into respective areas of the interior. In other words, the air duct 32 opens out into the interior via the through openings 46, 58, 60. Further, the air duct 32 opens out into the engine compartment 12 via the through opening 62. By moving the flaps 50, 52, 56 of the * guiding device 49 between their positions the air can be guided to the respective areas and/or to the engine compartment 12. The cooling device 10 also comprises a sensor 64
S
by means of which a temperature prevailing in the engine compartment 12 can be *5** measured. S. 55
The motor vehicle has at least one motor for driving the motor vehicle. The motor, for example, is configured as an internal combustion engine. If, for example the motor is ** S operated at a maximum load and if the ambient temperature is very high, very high S.....
* temperatures can occur in the engine compartment 12, Such high temperatures can also result from transient driving cycles of the motor in which continuous acceleration and deceleration of the motor happen. The motor vehicle can also comprise other components which are arranged in the engine compartment 12 and which are prone to failures and life reduction due to high temperature exposure In order to cool the engine compartment 12 and the components arranged within the engine compartment 12, the cooling device lOis configured to supply the air cooled by the air-conditioning system 14 to the engine compartment 12.
Fig. 2 shows a flow chart for illustrating a method for operating the cooling device 10. The temperature prevailing in the engine compartment 12 is measured by means of the sensor 64. In a first step SI the temperature prevailing in the engine compartment 12 and measured by the sensor 64 is compared with a predeterminable threshold value. If the measured temperature prevailing in the engine compartment 12 is below the threshold value a second step S2 follows the first step Sl, wherein no special actions for cooling the engine compartment 12 are executed.
If the temperature prevailing in the engine compartment 12 exceeds the threshold value, a third step 83 follows the first step SI. In the third step S3 it is checked if the air-conditioning system 14 is switched on. In particular, in the third step S3 is checked if the air is moved by the fan 16 and cooled by the evaporator 30.
If the air-conditioning system 14 is not switched on, a fourth step S4 follows the third step 53. In the fourth step 54 the air-conditioning system 14 is switched on. Then, a fifth step S5 follows the fourth step 54.
If the air-conditioning system 14 is already switched on, the fifth step 55 follows directly the third step 53. In the fifth step S5 the flaps 50, 52, 56 of the guiding device 49 are positioned in such a way that at least a part of the air cooled by the air-conditioning system 14 can flow through the through opening 62 into the engine compartment 12. For * * this purpose, for example, the flap 50 is moved into its sixth position thereby opening the trough opening 48 at least partially. Furthermore, the flap 52 is moved into its seventh position thereby opening the trough opening 62 at least partially. Thus, the air cooled by the evaporator 30 can flow through the through openings 48, 52 into the engine compartment 12. * * * ** *
****** * Thereby, the engine compartment 12 and the components arranged in the engine compartment 12 can be cooled. The cooling device 10 protects the engine compartment 12 and the components from significantly high temperatures.
Advantageously the cooling device 10 also comprises at least one sensor for measuring the temperature prevailing in the interior of the motor vehicle. Thus, for example, a control unit of the cooling device 10 can monitor both the temperature prevailing in the engine compartment 12 and the temperature prevailing in the interior. As a consequence, the control unit can control the positions of the flaps 26, 40, 50, 52, 56 to maintain both the temperature prevailing in the engine compartment 12 and the temperature prevailing in the interior within desirable and/or predeterminable limits.
By considering both the temperature prevailing in the engine compartment 12 and the temperature prevailing in the interior, the control unit can be used to balance the temperatures and to distribute the air in order to maintain both a desirable temperature in the interior and a desirable temperature in the engine compartment 12, In order to move the flaps 26, 40, 50, 52, 56 between their positions, a respective motor, in particular a respective electric motor, can be used. By means of the respective motors the flaps 26, 40 50, 52, 56 can be moved automatically by the control unit.
As can be seen from Fig. 1, the air duct 32 extends from the fan 16 to the engine compartment 12 thereby bypassing the interior of the motor vehicle. This means that the cooled air can be guided from the evaporator 30 to the engine compartment 12 thereby avoiding that the air cooled by the evaporator 30 flows into the interior and only afterwards into the engine compartment 12. Thus, the cooled air can flow from the evaporator 30 through the air duct 32 into the engine compartment 12 flowing into the interior. * * * * . * * * * * * ** * * * J

Claims (5)

  1. Claims 1. A cooling device (10) for cooling an engine compartment (12) of a motor vehicle1 the cooling device (10) comprising at least one fan (16) for moving air and at least one duct (32) for guiding the air into the engine compartment (12), characterized in that the cooling device (10) comprises at least one cooling apparatus (30) for cooling the air.
  2. 2. The cooling device (10) according to claim 1, characterized in that the duct (32) extends from the cooling apparatus (30) to the engine compartment (12) thereby bypassing an interior of the motor vehicle.
  3. 3. The cooling device (10) according to any one of claims I or 2, characterized in that the cooling apparatus (30) is a cooling apparatus (30) of an air-conditioning system (14) of the motor vehicle, wherein by means the air-conditioning system (14) an interior of the motor vehicle can be supplied with the air cooled by the cooling apparatus (30) and moved by the fan (16). * *
  4. 4. The cooling device (10) according to claim 3, characterized in that the cooling device (10) comprises at least one guide device (49) which is adjustable between at least one first position in which the air can flow into the interior and in which a flow of the air into the engine compartment (12) is avoided and at least one * .. -: second position in which the air can flow into the engine compartment (12). *t' a
  5. 5. A motor vehicle comprising the cooling device (10) according to any one of the preceding claims.
GB1305338.4A 2013-03-22 2013-03-22 Cooling device for cooling an engine compartment of a motor vehicle and motor vehicle Withdrawn GB2512143A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1305338.4A GB2512143A (en) 2013-03-22 2013-03-22 Cooling device for cooling an engine compartment of a motor vehicle and motor vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1305338.4A GB2512143A (en) 2013-03-22 2013-03-22 Cooling device for cooling an engine compartment of a motor vehicle and motor vehicle

Publications (2)

Publication Number Publication Date
GB201305338D0 GB201305338D0 (en) 2013-05-08
GB2512143A true GB2512143A (en) 2014-09-24

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ID=48326543

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1305338.4A Withdrawn GB2512143A (en) 2013-03-22 2013-03-22 Cooling device for cooling an engine compartment of a motor vehicle and motor vehicle

Country Status (1)

Country Link
GB (1) GB2512143A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114132141B (en) * 2021-11-04 2023-03-17 东风汽车集团股份有限公司 Cooling system of automobile engine compartment, use method and automobile

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080060591A1 (en) * 2006-09-11 2008-03-13 Hyundai Motor Company System and method for cooling engine room using heater blower
WO2008118062A1 (en) * 2007-03-28 2008-10-02 Volvo Lastvagnar Ab An engine compartment
US20090056651A1 (en) * 2007-08-28 2009-03-05 Caterpillar Paving Products Machine having cooling system and method
JP2010076523A (en) * 2008-09-25 2010-04-08 Mitsubishi Motors Corp Battery cooling system for vehicle

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080060591A1 (en) * 2006-09-11 2008-03-13 Hyundai Motor Company System and method for cooling engine room using heater blower
WO2008118062A1 (en) * 2007-03-28 2008-10-02 Volvo Lastvagnar Ab An engine compartment
US20090056651A1 (en) * 2007-08-28 2009-03-05 Caterpillar Paving Products Machine having cooling system and method
JP2010076523A (en) * 2008-09-25 2010-04-08 Mitsubishi Motors Corp Battery cooling system for vehicle

Also Published As

Publication number Publication date
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