Air entrainment component for vehicle exhaust system
AssigneeFaurecia Emissions Control Technologies
InventorDavid M. Prather
Life of this patent
Estimating the term…
Abstract
A vehicle exhaust system includes an air entrainment component that is used to reduce exhaust gas temperatures exiting the vehicle exhaust system. The air entrainment component includes an exhaust pipe with a non-circular cross-section at one end and an overlap tube that substantially surrounds the non-circular cross-section to form an air gap between the exhaust pipe and the overlap tube. Cooling external air is drawn into the air gap to cool heated exhaust gases within the exhaust pipe.
Claims18
An air entrainment component for a vehicle exhaust system comprising:
- a first exhaust pipe extending between first and second pipe ends to form an exhaust gas pathway, wherein at least one of the first and second pipe ends has a non-circular cross-section;
- and
- a second exhaust pipe substantially overlapping the one of the first and second pipe ends that has the non-circular cross-section to form at least one air gap between the first and second exhaust pipes through which cooling external air is drawn in to cool heated exhaust gases within the first exhaust pipe.
An air entrainment component for a vehicle exhaust system comprising:
- an exhaust pipe extending between first and second pipe ends to form an exhaust gas pathway, and wherein said first pipe end is connected to an upstream exhaust component and said second pipe end has a non-circular cross-section extending along a pre-defined length pipe length;
- and
- an overlap tube having a first tube end extending in a downstream direction and a second tube end that substantially overlaps the second pipe end along the pre-defined pipe length to form at least one air gap between the exhaust pipe and overlap tube through which cooling external air is drawn in to cool heated exhaust gases within the exhaust pipe.
Dependencies are inferred from the claim text.