An exhaust gas recirculation heat exchanger for allowing a flow of exhaust gas therethrough and a transfer of heat between the exhaust gas and a heat exchange fluid and a heat shield for shielding heat from exhaust gas flowing from an inlet of an exhaust gas recirculation heat exchanger toward a plurality of conduits disposed downstream from the inlet are provided. The heat shield includes a heat shield body and a plurality of apertures extending through the heat shield body and configured to be aligned with a plurality of conduits of the exhaust gas recirculation heat exchanger in a direction of flow of the exhaust gas through the exhaust gas recirculation heat exchanger.

An exhaust gas recirculation heat exchanger for allowing a flow of exhaust gas therethrough and a transfer of heat between the exhaust gas and a heat exchange fluid and a heat shield for shielding heat from exhaust gas flowing from an inlet of an exhaust gas recirculation heat exchanger toward a plurality of conduits disposed downstream from the inlet are provided. The heat shield includes a heat shield body and a plurality of apertures extending through the heat shield body and configured to be aligned with a plurality of conduits of the exhaust gas recirculation heat exchanger in a direction of flow of the exhaust gas through the exhaust gas recirculation heat exchanger.

An EM filter for an EGR cooler includes a gasket and a mesh filter including a horizontal wire and a vertical wire that are metal wires, wherein the horizontal wire and the vertical wire form a twill weave structure, and wherein a wire diameter of the horizontal wire with respect to a wire diameter of the vertical wire is greater than 1 and less than or equal to 1.3.

An EM filter for an EGR cooler includes a gasket and a mesh filter including a horizontal wire and a vertical wire that are metal wires, wherein the horizontal wire and the vertical wire form a twill weave structure, and wherein a wire diameter of the horizontal wire with respect to a wire diameter of the vertical wire is greater than 1 and less than or equal to 1.3.

An exhaust gas recirculation heat exchanger for allowing a flow of exhaust gas therethrough and a transfer of heat between the exhaust gas and a heat exchange fluid and a heat shield for shielding heat from exhaust gas flowing from an inlet of an exhaust gas recirculation heat exchanger toward a plurality of conduits disposed downstream from the inlet are provided. The heat shield includes a heat shield body and a plurality of apertures extending through the heat shield body and configured to be aligned with a plurality of conduits of the exhaust gas recirculation heat exchanger in a direction of flow of the exhaust gas through the exhaust gas recirculation heat exchanger.

An exhaust gas recirculation heat exchanger for allowing a flow of exhaust gas therethrough and a transfer of heat between the exhaust gas and a heat exchange fluid and a heat shield for shielding heat from exhaust gas flowing from an inlet of an exhaust gas recirculation heat exchanger toward a plurality of conduits disposed downstream from the inlet are provided. The heat shield includes a heat shield body and a plurality of apertures extending through the heat shield body and configured to be aligned with a plurality of conduits of the exhaust gas recirculation heat exchanger in a direction of flow of the exhaust gas through the exhaust gas recirculation heat exchanger.

An EGR cooler includes a tube assembly formed by stacking a plurality of tubes in which exhaust gas flows and a cover plate having a mounting portion formed concavely to mount the tube assembly thereon. A baffle is mounted at the tube assembly and adjusts flow of coolant inflow from a cylinder block. An inlet cover is installed on a first side of an outer surface of the cover plate to supply the exhaust gas to each tube and an outlet cover is installed on a second side of outer surface of the cover plate to exhaust the exhaust gas from each tube. At least one coolant passage in which the coolant flows is formed between the plurality of tubes.

An EGR cooler includes a tube assembly formed by stacking a plurality of tubes in which exhaust gas flows and a cover plate having a mounting portion formed concavely to mount the tube assembly thereon. A baffle is mounted at the tube assembly and adjusts flow of coolant inflow from a cylinder block. An inlet cover is installed on a first side of an outer surface of the cover plate to supply the exhaust gas to each tube and an outlet cover is installed on a second side of outer surface of the cover plate to exhaust the exhaust gas from each tube. At least one coolant passage in which the coolant flows is formed between the plurality of tubes.

The present disclosure provides an EGR cooler for brazing joint including an inlet configured to form an inlet area through which intake air and recirculation exhaust gas are supplied, a heat exchange unit formed with a gas tube connected to the inlet and through which the supplied intake air and the recirculation exhaust gas pass, and an outlet configured to form an outlet area through which the intake air and the recirculation exhaust gas mixed by passing through the heat exchange unit are discharged, in which the inlet, the heat exchange, and the outlet are brazing-joined, and a guide pattern configured to guide the flow of a filler metal so that surface energy of the filler metal applied for brazing joint is increased is transferred to each joined area.

An engine 1 includes an exhaust manifold, an intake manifold, and an EGR device configured to supply EGR gas from the exhaust manifold to the intake manifold. An upper end of the EGR cooler extended downward is attached to a downwardly extending attachment part provided to the exhaust manifold.