Exhaust system with o2 sensor
AssigneeMarine Power, Inc.
InventorWalter E. Albright, JR.
Life of this patent
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Abstract
The present invention relates to an exhaust system having a riser adapted to be mounted to the exhaust inlet of a marine engine and a turndown connected to the riser. The riser and turndown define a primary exhaust passage to direct exhaust gases downwardly toward the discharge opening. A secondary passage, a tube, is integrated to the turndown within the primary exhaust passage. An O2 sensor is mounted within the tube. The tube has a diameter that is less than the diameter of the primary exhaust passage. With the diameter being less, the exhaust gases in the secondary passage have a pressure that is greater than in the primary exhaust passage which eliminates or at least reduces the ability for water to enter the secondary passage protecting the O2 sensor from damage.
Claims11
An exhaust system having a post O2 sensor, said system comprising:
- a riser adapted to be mounted to the exhaust inlet of a marine engine;
- a turndown having a top portion, an elbow and a discharge opening, said elbow is positioned between said top portion and said discharge opening, said turndown is connected to said riser;
- said riser and turndown defining a primary exhaust passage to direct exhaust gases downwardly toward the discharge opening;
- a secondary passage is integrated to said turndown within said primary exhaust passage;
- an O2 sensor is mounted adjacent said exhaust elbow near said top of said turndown and extends into said secondary passage.
Dependencies are inferred from the claim text.