摘要:
The invention relates to an exhaust gas heat exchanger, in particular, to an exhaust gas cooler for exhaust gas recirculation in a motor vehicle comprising heat exchanging conduits which are passed through by exhaust gases, surrounded by a coolant and linked to a distributing and/or collecting chambers comprising a flux guiding device which is provided with the exhaust gas input and output sides and a plurality of channels extending therebetween and inclined to each other
摘要:
The invention relates to an exhaust system (1) on an internal combustion engine (2), comprising an inlet system (3) and an exhaust outlet (4), whereby the exhaust outlet (4) and the inlet system (3) are connected by means of an exhaust recycle line (5) in which an exhaust treatment unit (6) and a heat exchanger (7) are embodied. The heat exchanger (7) has a first back pressure and the exhaust treatment unit (6) has a second back pressure, smaller than the first back pressure, characterised in that the exhaust treatment unit (6) is embodied at such a first separation (8) from the heat exchanger (7) in the direction of flow that, during operation, a gas flow (14) entering the exhaust treatment unit (6) is equilibrated. Said exhaust system permits an advantageous embodiment of a heat exchanger (7) and an exhaust treatment unit (6), such as for example a honeycomb body in the exhaust recycle line (5), whereby both the heat exchanger (7) and the exhaust treatment unit (6) can have a smaller embodiment than in conventional systems. The above reduces the costs considerably on equipping such a system.
摘要:
The invention relates to an extruded tube for a heat exchanger, comprising two at least approximately parallel outer side walls (1, 2) that extend in a longitudinal direction (z) and a transverse direction (y) of the extruded tube and that are connected by means of two outer narrow sides (3, 4) in a vertical direction (x) of the extruded tube, wherein at least one continuous web (5) extends between the side walls (1, 2) in the longitudinal direction (z) and in the vertical direction (x) and separates at least two ducts (6) of the extruded tube, and wherein at least one of the outer side walls (1, 2) has embossings (7) that serve to form both bulged portions (7), that project into the ducts (6), of the side walls (1, 2) and also bulged portions (7), that extend substantially in the transverse direction (y), of the web (5), wherein the bulged portions (7) of the at least one web (5) have a controlled orientation with respect to the transverse direction (y).
摘要:
The invention relates to an exhaust gas installation (3) comprising an exhaust gas evaporator (5) mounted downstream of an internal combustion engine (2) of a motor vehicle. The exhaust gas evaporator (5) has a sandwich-type structure wherein exhaust gas planes (12) and coolant planes (13) are alternately arranged in direct adjacent contact, providing a very compact and at the same time very efficient exhaust gas evaporator.
摘要:
The invention relates to a heat exchanger (10, 20), particularly an exhaust gas heat exchanger, for transferring heat in two stages between a first fluid (1) and a second (2) and third fluid (3) that have different temperatures. Said heat exchanger (10, 20) comprises a block (5, 55) for separately conducting the first (1) as well as the second (2) and third fluid (3) in a heat transferring manner. The block (5, 55) encompasses a number of ducts (7A, 7B, 47) through which the first fluid (1) can flow, a first chamber (9A, 9B) of a high-temperature part (11, 51), through which the second fluid (2) can flow and which accommodates the ducts (7A, 7B, 47), a second chamber (9A, 9B) of a low-temperature part (13, 53), through which the third fluid (3) flows and which accommodates the ducts (7A, 7B, 47), and a housing (15, 45, 45A, 45B) in which the first (9A, 49A) and second chamber (9B, 49B) as well as the ducts (7A, 7B, 47) are arranged. The aim of the invention is to produce such a two-stage heat exchanger at a low cost and keep the leakage between the high-temperature part (11, 51) and the low-temperature part (13, 53) low. Said aim is achieved by separating the first chamber (9A, 49A) and the second chamber (9B, 49B) from one another by means of a separation area (17, 57) that is mounted in a groove (65).