Patent ID: 7434448
Filing Date: 2008-10-14
Classification: F01N,G01N,Y10T

Abstract:
1. A sensor for determining a physical property of an exhaust gas of an internal combustion engine, comprising: a housing; a sensor element secured in the housing, wherein a first end section of the sensor element on a measuring gas side is enclosed by a protective tube, and wherein a second end section of the sensor element on a connection side is further enclosed by a protective sleeve; and at least one radially-projecting flange for securing the sensor on a sealing seat formed on a measuring gas duct, wherein the at least one radially-projecting flange is formed as one piece on at least one of the protective sleeve and the protective tube; wherein the protective sleeve and the protective tube are manufactured as deep-drawn parts, and a trimming edge remaining after deep drawing forms the at least one radially-projecting flange; and wherein at least one of: a) a first radially-projecting flange is attached to the protective tube using a hollow screw mounted radially surrounding the housing and the protective sleeve, and wherein an annular end face of the hollow screw rests on the first radially-projecting flange; and b) a second radially-projecting flange is integrally formed on the protective sleeve, wherein the second radially-projecting flange forms a stop that prevents the hollow screw from being removed from surrounding the housing.