Cooling System

• US 20080017138A1
• Filed: 05/24/2005
• Published: 01/24/2008
• Est. Priority Date: 05/26/2004
• Status: Abandoned Application

• Current Assignee: BEHR GmbH & Company KG (MAHLE-STIFTUNG GmbH), Harison Toshiba Lighting Corporation (Toshiba Corporation)
• Original Assignee: BEHR GmbH & Company KG (MAHLE-STIFTUNG GmbH)
• Inventors: Rogg, Stefan
• Application Number:
  US11/597,328
• Publication Number:
  US 20080017138A1
• Time in Patent Office: Days
• US Class Current: 123/41.05
• CPC Class Codes: B60K 11/04 Arrangement or mounting of radiators, radiator shutters, or radiator blinds B60K11/085 takes precedence
• CPC Class Codes: B60K 11/085 with adjustable shutters or blinds
• CPC Class Codes: F01P 2070/50 mounting fans to heat-exchangers
• CPC Class Codes: Y02T 10/88 Optimized components or subsystems, e.g. lighting, actively controlled glasses

Abstract

The invention relates to a cooling system (1) for a motor vehicle (3), comprising at least one heat exchanger (14, 15), in particular an intercooler, which is traversed by a medium, in particular a coolant that is used to cool a motor (9) and which comprises a heat exchanger air-penetration surface that is traversed by an air stream along a first stream path (26) in a first operating mode, in particular a back-pressure mode and is additionally or alternatively traversed by an air stream along a second stream path (24) running through an air conduction unit (20) in a second operating mode, in particular a ventilator mode. The air conduction unit is located between the heat exchanger (14, 15) and the motor (9) and comprises a conduction air-penetration surface. The aim of the invention is to provide a cooling system, in which the cooling air stream is obstructed as little as possible along the first stream path (26) in the first operating mode and which permits the cooling air stream to be conducted along the second stream path (24) with minimal loss. To achieve this, the air-conduction device (20) and the heat exchanger (14, 15) are configured and arranged in such a way that a parallel projection of the conduction air-penetration surface in the longitudinal direction (8) of the vehicle (3) on the plane containing the heat-exchanger air-penetration surface, protrudes at least partly beyond said heat-exchanger air-penetration surface and that a significant part of the heat-exchanger air-penetration surface is not covered by the parallel projection of the conduction air-penetration surface.

Claims

1. A cooling system for a motor vehicle, having at least one heat exchanger, in particular a cooler, which cooler is traversed by a medium, in particular coolant, which serves for example to cool an engine, and which cooler has a heat exchanger air-passage surface which, in a first operating phase, in particular in a so-called ram-pressure mode, is traversed by an air flow along a first air flow path and which, in a second operating phase, in particular in a so-called fan mode, is additionally or alternatively traversed by an air flow along a second air flow path which runs through an air feed device which is arranged between the heat exchanger and the engine and has a feed air-passage surface, wherein the air feed device and the heat exchanger are designed and arranged in such a way that a parallel projection of the feed air-passage surface in the longitudinal direction of the vehicle onto the plane in which the heat exchanger air-passage surface is situated protrudes at least partially beyond the heat exchanger air-passage surface, and in that a significant part of the heat exchanger air-passage surface is not overlapped by the parallel projection of the feed air-passage surface.

2. The cooling system as claimed in claim 1, wherein the air feed device and the heat exchanger are designed and arranged such that 40% to 70% of the heat exchanger air-passage surface is not overlapped by the parallel projection of the feed air-passage surface.

3. The cooling system as claimed in claim 1, wherein a device for controlling the air flow is provided in the region between the heat exchanger and the engine which is not overlapped by the parallel projection of the feed air-passage surface.

4. The cooling system as claimed in claim 3, wherein the device for controlling the air flow comprises a cooling air louver.

5. The cooling system as claimed in claim 1, wherein the feed air-passage surface is arranged substantially parallel to the heat exchanger air-passage surface.

6. The cooling system as claimed in, claim 1, wherein the feed air-passage surface is arranged so as to be inclined relative to the heat exchanger air-passage surface.

7. The cooling system as claimed in claim 1, wherein the air feed device comprises at least one axial fan.

8. The cooling system as claimed in claim 7, wherein the axial fan has a diameter of 250 mm to 400 mm.

9. The cooling system as claimed in claim claim 7, wherein the axial fan has a rotational axis which is arranged radially outside the heat exchanger air-passage surface.

10. The cooling system as claimed in claim 1, wherein the air feed device is enclosed by a fan frame.

11. The cooling system as claimed in claim 10, wherein the fan frame is embodied as a self-supporting unit.

12. The cooling system as claimed in claim 10, wherein the fan frame has two struts which laterally delimit the device for controlling the air flow.

13. The cooling system as claimed in claim 10, wherein the fan frame has an upper and/or a lower transverse strut which delimits the device for controlling the air flow at the top and/or at the bottom.

14. The cooling system as claimed in claim 10, wherein the device for controlling the air flow is divided into two parts, and the fan frame has a central strut in the separating plane.

15. The cooling system as claimed in claim 13, wherein a border of the device for controlling the air flow having struts is part of the fan frame.

16. The cooling system as claimed in claim 13, wherein a border of the device for controlling the air flow having struts is part of the device for controlling the air flow.

17. The cooling system as claimed in claim 1, wherein the air flow is conducted to the heat exchanger through at least one air inlet opening in the front section of the motor vehicle.

18. The cooling system as claimed in claim 17, wherein the air inlet opening is arranged below a fender in the front section of the motor vehicle.

19. The cooling system as claimed in claim 17, wherein the air inlet opening is arranged above a fender in the front section of the motor vehicle.

20. The cooling system as claimed in claim 17, wherein air inlet openings are arranged above and below a fender in the front section of the motor vehicle.

21. The cooling system as claimed in claim 18, wherein a parallel projection of the inlet opening counter to the longitudinal direction of the vehicle onto the plane in which the heat exchanger air-passage surface is situated lies within the heat exchanger air-passage surface.

22. The cooling system as claimed in claim 21, wherein the parallel projection of the inlet opening counter to the longitudinal direction of the vehicle onto the plane in which the heat exchanger air-passage surface is situated lies within that part of the heat exchanger air-passage surface which is not overlapped by the parallel projection of the feed air-passage surface.

23. A motor vehicle having a cooling system as claimed in claim 1.