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Motor vehicle, especially a truck, with a cooling system for an internal combustion engine
| Details |
Inventors: Hauser, Kurt;
Assignee: Suddeutsche Kuhlerfabrik Julius Fr. Behr GmbH & Co. K.G. (Stuttgart, DE)
Primary Examiner: Richter; Sheldon J.
Assistant Examiner:
Attorney, Agent or Firm: Craig, Jr.; Paul M.
A motor vehicle, especially a truck, with a cab and a cooling system for an internal combustion engine is disclosed. The cooling system comprises a heat exchanger disposed in an engine compartment and provided with an associated blower, and at least one additional heat exchanger located outside the engine compartment and with which an additional blower is associated. The additional blower is mounted on a roof of the cab and is connected through a channel with the additional heat exchanger which is located inside the channel in the vicinity of one wall of the cab. |
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DETAILED DESCRIPTION The present invention relates to a motor vehicle, especially a truck, with a cab and with a cooling system for an internal combustion engine, said cooling system comprising a heat exchanger located in an engine compartment and provided with an associated blower, and one or more additional heat exchangers located outside the engine compartment, and with an additional blower associated with said additional heat exchangers.
It is now required that the noise produced by motor vehicles, especially trucks, be reduced by approximately 10 dB(A) by comparison with the values presently allowed.
This means that the noise produced by the cooling system, especially the fan, must be reduced by at least the same amount.
Numerous proposals have been made to achieve this.
Considering only the construction cost of the cooling device, the simplest solution is to use a low-noise radial fan in conjunction with a heat exchanger mounted in the usual fasion, a so-called front radiator (German Offenlegungsschrift No.
2,530,742).
A radial fan, however, requires a much greater installation depth than the axial fan usually employed, resulting in installation problems.
Since the total length of the vehicle may not be increased, mounting the radial fan in many cases shortens the truck bed by at least the amount by which the installation depth of the radial fan is greater than that of an axial fan.
It is also known (German Offenlengungsschrift No.
2,530,741 and German Offenlegungsschrift No.
2,530,743) to mount the entire cooling system behind the cab, but this results in the same problems relating to shortening of the truck bed.
It is also known (German Offenlegungsschrift No.
2,747,785) to mount the cooling system on the cab roof.
It is true that this avoids the above-mentioned disadvantages relating to space requirements, but there are considerable objections to an arrangement of this kind because there is a danger that, especially in accidents, coolant could escape from the heat exchanger and pose the danger of scalding the occupants of the cab
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