An internal combustion engine fitted with a combustion pressure detection device includes: an internal combustion engine having a combustion chamber, and an opening formed in the wall surface configuring the combustion chamber, connecting to the combustion...

A reciprocating engine (1) includes a cylinder (2); a piston (3) reciprocating in the cylinder (2) in a direction X; a connecting rod (5) rotatably coupled at its small end portion (4) to the piston (3) through a piston pin (4a); ring grooves (7, 8) dispos...