Abstract: A method and apparatus for producing a floor for a heat exchanger may include supplying a material strand to a tool and at least partially introducing a passage of the floor into the material strand by at least one stamp of the tool. The material strand may be advanced by a predetermined distance in a longitudinal direction. The introducing and advancing may be repeated until a predetermined number of passages has been introduced into the floor.

Abstract: A collector tank for a heat exchanger of an automotive cooling system includes a one-piece tank element comprising a first collecting region and a second collecting region, wherein at least one of the first collecting region and the second collecting region comprises a projection; a base that closes off the collecting regions of the tank element, the base comprising at least one channel; a sealing element disposed within the at least one channel; and a stress generating means located adjacent to the channel and clamping at least a portion of the one-piece tank element to the base such that the sealing element is compressed between the projection and the base within the channel. The stress generating means is a means selected from the group consisting of a tensile stress generating means, a compressive stress generating means, and a combination thereof.

Abstract: A heat exchanger, in particular for an internal combustion engine, comprising a plurality of flat tubes that extend parallel to one another and are each oriented with a longitudinal side in a primary flow direction of a fluid, and a base, wherein a plurality of passages into which each of the flat tubes terminate are provided in the base, wherein at least four rows of flat tubes are arranged one behind the other in the primary flow direction, all of which terminate in the base.

Abstract: A collecting tank for a heat exchanger pertaining to a motor vehicle cooling installation includes a tank element. The tank element includes at least two collecting regions for receiving fluid, the receiving regions being embodied together as a single component and being outwardly sealed by a sealing element, and a bottom for closing the collecting regions. A sealing arrangement is provided between the tank element and the bottom, between two adjacent collecting regions. The sealing arrangement includes exactly one sealing element which, in addition to sealing between the two collecting regions, is used to seal the arrangement towards the outside. The sealing element is preferably arranged in a plane in the collecting tank, especially in a continuous channel.

Abstract: A heat exchanger, in particular a heat exchanger for a motor vehicle, which is constructed from modular heat exchanger components can include the following types of heat exchanger components: a plurality of tubes, in particular flat tubes, a plurality of plates and at least one connecting piece having an inlet opening for introducing a fluid and/or an outlet opening for discharging the fluid, the outer contour of the heat exchanger being at least partially formed by the outer contours of the heat exchanger components, the reliable arrangement of the same type of heat exchanger component in the designated location within the heat exchanger is reliably guaranteed. Thus, the heat exchanger components of the same type have different outer contours which form an outer contour of the heat exchanger so that heat exchanger components of the same type but having different functions may be distinguished from each other on the basis of their different outer contours.