A system for connecting housing elements of a device for heat transfer having a housing with a first housing element and a second housing element which are connectable with one another with face sides oriented toward one another and via a connection under form closure. Housing elements are herein in contact on another with side margins developed in proximity of front faces. The first latching elements are implemented as recesses each with a flat surface oriented in parallel to front face. On an outer side of side margin of first housing element between each first latching element and front face, a shaping is developed protruding from side margin, which comprises on a side facing first latching element a flat surface disposed in the plane spanned by flat surface of first latching element. Flat surfaces of first latching element and the shaping form a contiguous bearing area for second latching element.

An engine and a method of controlling the engine may include an EGR injector provided such that EGR gas sprays that are injected toward a side wall of a combustion chamber reach the side wall of a combustion chamber, simultaneously; an EGR pipe connecting the EGR injector to an exhaust system of the engine and ejecting exhaust gas from the exhaust system; an EGR pump mounted in the EGR pipe and pumping the exhaust gas in the EGR pipe to supply the exhaust gas to the EGR injector; and controller connected to the EGR pump and the EGR injector and configured for controlling the EGR pump and the EGR injector so that the EGR injector injects EGR gas into the combustion chamber.

An aluminum alloy heat exchanger for an exhaust gas recirculation system, the heat exchanger obtained by brazing: a tube material comprising a core material comprising 0.05 mass % to 1.50 mass % of Si, 0.05 mass % to 3.00 mass % of Cu, and 0.40 mass % to 2.00 mass % of Mn, and a sacrificial anticorrosion material comprising 2.00 mass % to 6.00 mass % of Zn, clad on an inner side surface of the core material; and a fin material comprising a core material comprising 0.05 mass to 1.50 mass % of Si, and 0.40 mass % to 2.00 mass % of Mn, and a brazing material comprising 3.00 mass % to 13.00 mass % of Si, clad on both surfaces of the core material; the heat exchanger having a ratio of a surface area S.sub.b (mm.sup.2) of the fin material to a surface area S.sub.a (mm.sup.2) of the sacrificial anticorrosion material of less than 200%.

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.

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.

An exhaust system for an internal combustion engine includes an EGR cooler having a heat exchange surface exposed to a flow of exhaust, and a second heat exchange surface. A coolant heat exchanger is fluidly connected to a coolant outlet of the EGR cooler and a coolant pump is fluidly connected to a coolant inlet of the EGR cooler. A condensate collector collects condensate from exhaust, and a condensate pump pumps condensate from the condensate collector to a sprayer to spray condensate onto the second heat exchange surface to vaporize the condensate for discharging out through an outgoing exhaust conduit of the exhaust system.

An exhaust system for an internal combustion engine includes an EGR cooler having a heat exchange surface exposed to a flow of exhaust, and a second heat exchange surface. A coolant heat exchanger is fluidly connected to a coolant outlet of the EGR cooler and a coolant pump is fluidly connected to a coolant inlet of the EGR cooler. A condensate collector collects condensate from exhaust, and a condensate pump pumps condensate from the condensate collector to a sprayer to spray condensate onto the second heat exchange surface to vaporize the condensate for discharging out through an outgoing exhaust conduit of the exhaust system.

An exhaust system for an internal combustion engine includes an EGR cooler having a heat exchange surface exposed to a flow of exhaust, and a second heat exchange surface. A coolant heat exchanger is fluidly connected to a coolant outlet of the EGR cooler and a coolant pump is fluidly connected to a coolant inlet of the EGR cooler. A condensate collector collects condensate from exhaust, and a condensate pump pumps condensate from the condensate collector to a sprayer to spray condensate onto the second heat exchange surface to vaporize the condensate for discharging out through an outgoing exhaust conduit of the exhaust system.

An exhaust system for an internal combustion engine includes an EGR cooler having a heat exchange surface exposed to a flow of exhaust, and a second heat exchange surface. A coolant heat exchanger is fluidly connected to a coolant outlet of the EGR cooler and a coolant pump is fluidly connected to a coolant inlet of the EGR cooler. A condensate collector collects condensate from exhaust, and a condensate pump pumps condensate from the condensate collector to a sprayer to spray condensate onto the second heat exchange surface to vaporize the condensate for discharging out through an outgoing exhaust conduit of the exhaust system.

A heat exchanger disposed on a downstream side of a gas flow passage of combustion exhaust gas ejected from a burner comprising a plurality of heat exchange units stacked in a gas flow passage direction of the combustion exhaust gas, an inlet pipe, and an outlet pipe, wherein the inlet pipe and the outlet pipe are provided so as to protrude from a most downstream heat exchange unit located on a most downstream side of the gas flow passage of the combustion exhaust gas toward the downstream side of the gas flow passage of the combustion exhaust gas.