Valve train with a single camshaft

Abstract

A valvetrain with a single camshaft is disclosed. The valvetrain has one or more intake valves, and one or more exhaust valves per cylinder of an engine block. The valvetrain comprises a cylinder head. The valve head of each intake valve is removably seated within a corresponding intake valve seat of the cylinder head, and the stem of each intake valve is movably positioned within the cylinder head. The valve head of each exhaust valve is removably seated within a corresponding exhaust valve seat of the cylinder head, and the stem of each exhaust valve is movably positioned with the cylinder head. For each cylinder, an intake crosshead and an exhaust crosshead are pivotally mounted upon the cylinder head. Each intake crosshead is operatively mounted upon the stem top of a corresponding intake valve. Each exhaust crosshead is operatively mounted upon the stem top of a corresponding exhaust valve. For each cylinder, an intake rocker arm and an exhaust rocker arm are pivotally coupled to the cylinder head. Each intake rocker arm operatively abuts a corresponding intake crosshead. Each exhaust rocker arm operatively abuts a corresponding exhaust crosshead. The single camshaft is rotatably mounted to the cylinder head, and operatively abuts the rocker arms. As the camshaft cyclically rotates, the rockers arm and the crossheads undulatedly pivot about the cylinder head causing a undulated seating and unseating of the intake valve(s) and the exhaust valve(s) within the respective intake valve seat(s) and exhaust valve seat(s).

Dependencies are inferred from the claim text.