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 exhaust gas recirculation cooler may include a heat exchanger block including a first mounting flange, a diffuser including a second mounting flange, and at least one non-return valve arranged between the heat exchanger block and the diffuser. The exhaust gas recirculation cooler may also include a valve carrier which supports the at least one non-return valve and on which a gasket is arranged. The heat exchanger block may be connected via the first mounting flange directly to the second mounting flange of the diffuser. The valve carrier may be arranged between the heat exchanger block and the diffuser, and with the gasket may seal a sealing point between the first mounting flange and the second mounting flange. The diffuser may include an outwardly closed recess with a peripheral rim structured to accommodate the valve carrier. The rim may define the second mounting flange.

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 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: An exhaust gas recirculation cooler may include a housing having a coolant inlet opening into an inlet region and a coolant outlet, and a plurality of cooling tubes arranged in the housing next to one another to form a tube row, each cooling tube connecting an exhaust gas inlet and outlet. At least two tube rows with one arranged on top of another and spaced from each other may form a tube block. Exhaust gas may be flowable through an inside of each cooling tube, and a coolant flow may be able to be circulated outside of the cooling tubes within the housing and flowable through an annular space enclosing the tube block in a circumferential direction. A flow guide arrangement for guiding the coolant in the interior of the tube block may be arranged in the housing lying against at least portions of one of the tube rows.

Abstract: An exhaust gas recirculation cooler may include a heat exchanger block including a first mounting flange, a diffuser including a second mounting flange, and at least one non-return valve arranged between the heat exchanger block and the diffuser. The exhaust gas recirculation cooler may also include a valve carrier which supports the at least one non-return valve and on which a gasket is arranged. The heat exchanger block may be connected via the first mounting flange directly to the second mounting flange of the diffuser. The valve carrier may be arranged between the heat exchanger block and the diffuser, and with the gasket may seal a sealing point between the first mounting flange and the second mounting flange. The diffuser may include an outwardly closed recess with a peripheral rim structured to accommodate the valve carrier. The rim may define the second mounting flange.

Abstract: An exhaust gas recirculation cooler may include a housing having a coolant inlet opening into an inlet region and a coolant outlet, and a plurality of cooling tubes arranged in the housing next to one another to form a tube row, each cooling tube connecting an exhaust gas inlet and outlet. At least two tube rows with one arranged on top of another and spaced from each other may form a tube block. Exhaust gas may be flowable through an inside of each cooling tube, and a coolant flow may be able to be circulated outside of the cooling tubes within the housing and flowable through an annular space enclosing the tube block in a circumferential direction. A flow guide arrangement for guiding the coolant in the interior of the tube block may be arranged in the housing lying against at least portions of one of the tube rows.

Abstract: An internal combustion engine may include a housing and at least one cavity arranged therein for receiving a coolant flow. An exhaust gas cooler may be provided for cooling an exhaust gas flow. The exhaust gas cooler may be configured as a stacked disc cooler including at least two stacking discs, an exhaust gas inlet, a cover plate and a screw-mounting plate for screw-mounting to the housing. The exhaust gas cooler may protrude into the cavity of the housing when the screw-mounting plate is mounted to the housing. The screw-mounting plate may have a spacer element disposed at the exhaust gas inlet. The spacer element may protrude in a direction of the at least two stacking discs and enlarge a distance between the screw-mounting plate and an adjacent stacking disc of the at least two stacking discs to position the exhaust gas cooler further into the cavity.

Abstract: An internal combustion engine may include a housing and at least one cavity arranged therein for receiving a coolant flow. An exhaust gas cooler may be provided for cooling an exhaust gas flow. The exhaust gas cooler may be configured as a stacked disc cooler including at least two stacking discs, an exhaust gas inlet, a cover plate and a screw-mounting plate for screw-mounting to the housing. The exhaust gas cooler may protrude into the cavity of the housing when the screw-mounting plate is mounted to the housing. The screw-mounting plate may have a spacer element disposed at the exhaust gas inlet. The spacer element may protrude in a direction of the at least two stacking discs and enlarge a distance between the screw-mounting plate and an adjacent stacking disc of the at least two stacking discs to position the exhaust gas cooler further into the cavity.

Abstract: An exhaust-gas heat exchanger having a housing and a first flow channel. The first flow channel is accommodated in the housing in such a way that a second flow channel is formed between the first flow channel and the housing. A first fluid can flow through the first flow channel and a second fluid can flow through the second flow channel. The second fluid can flow around the first flow channel. The housing has a first diffuser and a second diffuser at an end of the housing and at least one of the diffusers is made of a plastic.

Abstract: An exhaust gas cooler for cooling combustion exhaust gas of an internal combustion engine having a cooling medium, wherein the exhaust gas cooler has an exhaust gas inlet for introducing hot combustion exhaust gas into the exhaust gas cooler. Furthermore, the exhaust gas cooler has an exhaust gas outlet for directing cooled combustion exhaust gas out of the exhaust gas cooler, wherein the exhaust gas outlet is fluidically connected to the exhaust gas inlet. Furthermore, the exhaust gas cooler has at least one coolant inlet for fluidically connecting the exhaust gas cooler to at least one coolant outlet of the internal combustion engine. Furthermore, the exhaust gas cooler has an interface for fluidically connecting a water collecting adapter, wherein the interface is designed to carry the coolant out of the exhaust gas cooler.

Abstract: An exhaust gas cooler for cooling combustion exhaust gas of an internal combustion engine having a cooling medium, wherein the exhaust gas cooler has an exhaust gas inlet for introducing hot combustion exhaust gas into the exhaust gas cooler. Furthermore, the exhaust gas cooler has an exhaust gas outlet for directing cooled combustion exhaust gas out of the exhaust gas cooler, wherein the exhaust gas outlet is fluidically connected to the exhaust gas inlet. Furthermore, the exhaust gas cooler has at least one coolant inlet for fluidically connecting the exhaust gas cooler to at least one coolant outlet of the internal combustion engine. Furthermore, the exhaust gas cooler has an interface for fluidically connecting a water collecting adapter, wherein the interface is designed to carry the coolant out of the exhaust gas cooler.