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US 2019/0101080 A1Published application
Heat Recovery System
AssigneeBorgwarner Emissions Systems Spain, S.L.U.
InventorsSalvador García González, Xoan Xosé Hermida Domínguez, Jorge Teniente Molinos, David Lago López, Ana Otero Vázquez, Anxo Sotelo Álvarez
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Abstract
The present invention relates to a heat recovery system for internal combustion engines which is arranged in an exhaust gas conduit. The system allows transferring heat from the exhaust gas conduit to a liquid coolant through a heat exchanger and includes a flow guide element to prevent undesired recirculation, allowing subsequent energy optimization of the heat recovery device.
Claims17
A heat recovery system, comprising:
- an exhaust gas conduit extending according to an axial direction and comprising an exhaust gas inlet and an exhaust gas outlet,
- a heat exchanger comprising a heat exchange block wherein heat transfer between the exhaust gas and a liquid coolant is established, the heat exchanger being in fluid communication with the exhaust gas conduit through:
- at least a first intake opening located in the wall of the exhaust gas conduit corresponding with the inlet into the heat exchanger, and
- at least a second exhaust opening located in the wall of the exhaust gas conduit corresponding with the outlet from the heat exchanger,
- wherein each opening extends according to the axial direction between a first reference plane, transverse to the axial direction, located upstream according to the exhaust gas flow, and a second reference plane transverse to the axial direction, located downstream according to the exhaust gas flow;
- a valve defining two end positions:
- a first position, wherein the exhaust gas flow travels through the exhaust gas conduit without passing through the heat exchanger, and
- a second position, wherein the exhaust gas flow passes through the heat exchanger, a cooled exhaust gas flow thereby being obtained,
- wherein the system further comprises:
- a flow guide housed in the exhaust gas conduit extending along a segment in the axial direction and leading the exhaust gas flow at least from the first reference plane of one of the openings to reduce or eliminate the exhaust gas flow in the first position of the valve through said opening to the exchange block of the heat exchanger.
7 more elements
Dependencies are inferred from the claim text.