Oxygen sensor and internal combustion engine comprising said sensor

A sensor for detecting the oxygen content in the intake tract of an internal combustion engine, comprising:

• a sensor element having a measurement electrode at a first end;
• a metal cap formed as a pipe that surrounds the sensor element, the sensor element extending coaxially with respect to the pipe;
• a plate-shaped heat dissipation element, arranged in the pipe transverse to a longitudinal axis of the pipe, that extends radially from the sensor element and connects the sensor element and the metal cap and makes contact with an inner side of the metal cap and supports the metal cap;
• evaluation electronics for the sensor element arranged on a portion of the sensor element opposite the first end;
• and
• a bracket arranged opposite the measurement electrode into which the sensor element extends, the bracket being in the form of a plastic housing, the bracket accommodating the evaluation electronics for the sensor element arranged on the portion of the sensor element that extends into the bracket,
• wherein the plate-shaped heat dissipation element is arranged between the measurement electrode and the bracket to dissipate heat and is configured to be the support for the metal cap;
• and
• wherein the metal cap does not directly contact the bracket.