Back to results
US 2018/0003097 A1Published application
Heat recovery device and exhaust line fitted with such device
AssigneeFaurecia Systemes D'Echappement
InventorsYannick GODARD, Julien CABILLIC
Life of this patent
Estimating the term…
Abstract
A heat recovery device comprises a valve body inwardly defining a direct flow path for exhaust gases from an inlet to an outlet, a heat exchanger comprising a flow passage for the exhaust gases emerging in an inlet zone of the valve body, and a gate positioned in the valve body. The heat recovery device comprises a guide wall positioned in the direct flow path at the inlet zone, arranged to guide the exhaust gases from the inlet toward the cutoff section away from the inlet zone when the gate frees the direct flow path, and delimiting at least one orifice to allow the exhaust gases to go to the inlet zone when the gate closes off the direct flow path.
Claims11
A heat recovery device for an exhaust line, the heat recovery device comprising:
- a valve body having at least one exhaust gas inlet and at least one exhaust gas outlet, the valve body inwardly defining a direct flow path for exhaust gases from the exhaust gas inlet to the exhaust gas outlet;
- a heat exchanger to exchange heat between the exhaust gases and a heat transfer fluid, the heat exchanger comprising a flow path for the exhaust gases and a flow path for the heat transfer fluid, the flow path for the exhaust gases having upstream and downstream ends respectively emerging in inlet and outlet zones of the valve body, respectively situated relatively closer to the exhaust gas inlet and relatively closer to the exhaust gas outlet along the direct flow path;
- a shutter arranged in the valve body and movable relative to the valve body at least between a heat exchange position, in which the shutter closes off a cutoff section of the direct flow path and forces the exhaust gases to flow from the exhaust gas inlet to the exhaust gas outlet through the heat exchanger along the flow path, and a short-circuit position, in which the shutter frees said cutoff section of the direct flow path and closes off the outlet zone, the shutter forcing the exhaust gases to flow from the exhaust gas inlet to the exhaust gas outlet along the direct flow path, the cutoff section being situated between the inlet zone and the outlet zone along the direct flow path;
- and
- wherein the heat recovery device comprises a guide wall arranged in the direct flow path in front of the inlet zone and arranged to guide the exhaust gases from the exhaust gas inlet toward the cutoff section away from the inlet zone when the shutter is in the short-circuit position, and defining at least one opening to allow the exhaust gases to flow to the inlet zone when the shutter is in the heat exchange position.
2 more elements
A vehicle exhaust line comprising:
- a heat recovery device including a valve body having at least one exhaust gas inlet and at least one exhaust gas outlet, the valve body inwardly defining a direct flow path for exhaust gases from the exhaust gas inlet to the exhaust gas outlet;
- a heat exchanger to exchange het between the exhaust gases and a heat transfer fluid, the heat exchanger comprising a flow path for the exhaust gases and a flow path for the heat transfer fluid, the flow path for the exhaust gases having upstream and downstream ends respectively emerging in inlet and outlet zones of the valve body, respectively situated relatively closer to the exhaust gas inlet and relatively closer to the exhaust gas outlet along the direct flow path;
- a shutter arranged in the valve body and movable relative to the valve body at least between a heat exchange position, in which the shutter closes off a cutoff section of the direct flow path and forces the exhaust gases to flow from the exhaust gas inlet to the exhaust gas outlet through the heat exchanger along the flow path, and a short-circuit position, in which the shutter frees said cutoff section of the direct flow path and closes off the outlet zone, the shutter forcing the exhaust gases to flow from the exhaust gas inlet to the exhaust gas outlet along the direct flow path, the cutoff section being situated between the inlet zone and the outlet zone along the direct flow path;
- and
- wherein the heat recovery device comprises a guide wall arranged in the direct flow path in front of the inlet zone and arranged to guide the exhaust gases from the exhaust gas inlet toward the cutoff section away from the inlet zone when the shutter is in the short-circuit position, and defining at least one opening to allow the exhaust gases to flow to the inlet zone when the shutter is in the heat exchange position.
2 more elements
Dependencies are inferred from the claim text.