Abstract: A flat tube for an exhaust gas cooler including two flat wide sides and two rounded narrow sides. The flat tube further including a plurality of moulded turbulence projections arranged on the two wide sides in two flow rows and projecting from a respective one of the two wide sides toward the other of the two wide sides. The plurality of turbulence projections are respectively structured in an elongated manner and arranged at an angle relative to a longitudinal direction. The flat tube also including a plurality of moulded support projections projecting from a respective one of the two wide sides away from the other of the two wide sides. The plurality of support projections are arranged between the two flow rows. The two narrow sides each have an elongated flat region that merges into the two wide sides via a plurality of rounded corner regions.

Abstract: A sealing ring assembly for connection of an exhaust gas cooler to a coolant line may include a carrier ring composed of a plastic, a sealing ring composed of a sealing material connected to the carrier ring; and a heat protection element connected to the carrier ring and surrounding the carrier ring on a radial outer side defining an air gap therebetween.

Abstract: An annular sealing device may include a support ring and a sealing ring of a sealing material. The support ring may have an axial face end, an inner lateral surface, and a plurality of passage openings. The sealing ring may have an L-shaped cross section, a radial sealing surface, and an axial sealing surface and may lie against the inner lateral surface and the axial face end. The plurality of passage openings may each have an undercut directed radially to an outside. The plurality of passage openings may define a negative form for a plurality of connecting webs. The sealing ring may be a plastic injection moulding and injection moulded onto the support ring such that the axial sealing surface, the radial sealing surface, and the plurality of connecting webs are a single piece and the plurality of undercuts are at least partly filled with the sealing material.

Abstract: The invention relates to a flat pipe, comprising two substantially flat first walls that are opposite each other and arranged parallel to each other, two arcuate second walls that connect the two flat first walls, and an interior through which a medium can flow, wherein projections that protrude into the interior are provided in at least one of the flat first walls, wherein projections that protrude into the interior are provided in the arcuate second walls.

Abstract: The present invention relates to a sealing ring assembly (1) for connection of an exhaust gas cooler (2) to a coolant line (3), comprising a carrier ring (4) made of plastic, comprising a sealing ring (5) made of a sealing material, which is connected to the carrier ring (4), comprising a heat protection element (6), which is connected to the carrier ring (4) and surrounds the latter on a radial outer side by forming an air gap (7).

Abstract: A flat tube for an exhaust gas cooler may include two flat wide sides and two rounded narrow sides. A plurality of moulded turbulence projections may be arranged on the two wide sides in two flow rows and project from a respective one of the two wide sides toward the other of the two wide sides. The plurality of turbulence projections may be respectively structured in an elongated manner and arranged at an angle relative to the longitudinal direction. The flat tube may also include a plurality of moulded support projections projecting from a respective one of the two wide sides away from the other of the two wide sides. The plurality of support projections may be arranged between the two flow rows. The two narrow sides may each have an elongated flat region that merges into the two wide sides via a plurality of rounded corner regions.

Abstract: The invention relates to a flat pipe, comprising two substantially flat first walls that are opposite each other and arranged parallel to each other, two arcuate second walls that connect the two flat first walls, and an interior through which a medium can flow, wherein projections that protrude into the interior are provided in at least one of the flat first walls, wherein projections that protrude into the interior are provided in the arcuate second walls.

Abstract: Disclosed herein is a heat exchanger with a housing casing, a first base and a second base with openings, pipes as a first flow channel for conducting a first fluid, the ends thereof being arranged in or on the openings of the first and second bases, the pipes and the first and/or the second base are arranged within the housing so that a second flow channel for conducting a second fluid is designed between the housing and the pipes, a first inlet opening for the first fluid, a first outlet opening for the first fluid, a second inlet opening for the second fluid, a second outlet opening for the second fluid, a first diffusor for directing the first fluid into the pipes, a second diffuser for directing the first fluid out of the pipes, which heat exchanger should be simple and cost-effective to produce and ensure reliable operation.