Patent ID: 8800264

Claim:
An exhaust assembly for a vehicle, comprising: an exhaust pipe having an interior through which an exhaust gas flows substantially in a first direction, the interior having a central region; a sensor in fluid communication with the interior of the exhaust pipe; and a tube extending from a first end toward a second end and disposed at least partially within the interior of the exhaust pipe, the first end of the tube receiving at least a portion of the sensor and the second end of the tube being spaced from the sensor, the tube including a sidewall defining an inlet opening, an outlet opening and a chamber between the inlet opening and outlet opening, the inlet opening being spaced from the sensor and open to the interior of the exhaust pipe so that some of the exhaust gas flowing within the exhaust pipe enters the chamber, at least a portion of the sensor being located between the inlet opening and the outlet opening and in fluid communication with the chamber so that gas that enters the chamber through the inlet opening flows through the chamber, is directed by the tube toward the sensor, and then flows out of the tube through the outlet opening, wherein the inlet is a hole in the sidewall located proximate the second end; and the outlet is a notch formed in the sidewall at the first end.