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US 9,737,908 B2Granted
Anti-deposit forming surface finish for exhaust system mixer
AssigneeFaurecia Emissions Control Technologies, USA, LLC
InventorsJerome Brian Hornback, Chris Chapman
Life of this patent
Estimating the term…
Abstract
A vehicle exhaust system includes a mixer having an inlet that receives engine exhaust gases and an outlet to direct swirling engine exhaust gas to a downstream exhaust component. The mixer has a plurality of internal surfaces that come into contact with the engine exhaust gases. At least one of the internal surfaces has a coating comprised of a low-coefficient of friction material.
Claims14
A method of manufacturing a mixer for a vehicle exhaust system comprising the steps of:
- providing a mixer having an upstream end configured to be fixed to an upstream exhaust component and a downstream end configured to be fixed to a downstream exhaust component, the mixer having an inlet configured to receive engine exhaust gases and an outlet to direct swirling engine exhaust gas to the downstream exhaust component, and the mixer further including an upstream baffle and a downstream baffle that are surrounded by an outer peripheral surface to define an area between the upstream and downstream baffles, and the mixer having a plurality of internal surfaces that come into contact with the engine exhaust gases;
- providing both the upstream and downstream baffles with internal baffle surfaces that face the area and that are in contact with hot engine exhaust gases;
- and coating the internal baffle surfaces of the upstream and downstream baffles with a low-coefficient of friction material.
Dependencies are inferred from the claim text.