Patent ID: 8429956

Claim:
A pressure-measuring plug ( 1 ) for a combustion engine comprising: a plug body ( 2 ) including: a threaded plug body part ( 2 a ) having an external thread for screwing the plug body ( 2 ) into a cylinder of the combustion engine; a sealing plug body part ( 2 b ) forming a tip of the pressure-measuring plug ( 1 ) and configured for providing a seal between the pressure-measuring plug and the combustion engine; and a sensing body part ( 2 c ) positioned between the threaded plug body part ( 2 a ) and the sealing plug body part ( 2 b ), wherein the sensing body part ( 2 c ) has a cylindrical body part ( 2 c 1 ), a moving part ( 2 c 2 ), and a sensing structure ( 4 ), wherein the cylindrical body part ( 2 c 1 ), the moving part ( 2 c 2 ), and the sensing structure ( 4 ) form a single integral piece, and wherein the sensing structure ( 4 ) forms a connection between the cylindrical body part ( 2 c 1 ) and the moving part ( 2 c 2 ), and allows the moving part ( 2 c 2 ) to move relatively to the cylindrical body part ( 2 c 1 ) along a cylinder axis ( 6 ) of the cylindrical body part ( 2 c 1 ).