Camshaft-less internal combustion engine for use in motor vehicle, has valve plate and/or piston including molding that forms contact surface in case of collision, where molding lies in area of valve central axis

摘要

The engine has a set of valves (5) implemented as inlet valves or outlet valves, and movable in a valve guide (4) of a valve train (1). The valves exchanges gas of a piston (3) that includes a piston head (2), where the piston is movable in a cylinder. The piston includes a piston axis (8) inclined against a central axis (7) of the valves. A valve plate (9) and/or the piston include a molding (10, 11) that forms a contact surface (12) in case of collision, where the molding lies in an area of the valve central axis and includes friction-reducing characteristics.