Spark plug and method for manufacturing a spark plug

Abstract

A spark plug includes an inner conductor, an ignition tip connected to the inner conductor, an insulator surrounding the inner conductor and having a front end and a rear end, a spark plug body having a front end and a rear end, and at least one ground electrode connected to the front end of the spark plug body. The spark plug has a longitudinal direction extending parallel to the inner conductor. The spark plug body comprises a passage extending in the longitudinal direction and in which the insulator is disposed. A sleeve composed of metal is disposed between the insulator and the spark plug body. The sleeve is tightly connected to the insulator and the spark plug body and is referred to below as the “first sleeve”. At least one second sleeve is disposed at a distance from the first sleeve) and, in fact, between the first sleeve and the rear end of the insulator. The second sleeve is connected to the insulator and touches the spark plug body in the passage thereof.

Dependencies are inferred from the claim text.