EXHAUST VALVE MECHANISM FOR INTERNAL COMBUSTION ENGINE

摘要

The invention relates to an exhaust valve mechanism for an internal combustion engine (11) with at least one exhaust valve in every engine cylinder. The mechanism (10) comprises a main rocker arm (12) mounted on a rocker arm shaft (13) and a secondary rocker arm (29) arranged on the main rocker arm and mounted on the rocker arm shaft for the activation of an exhaust brake function. A spring device (33; 35) is so arranged as to act between a fixed point (34) on the engine and the secondary rocker arm (29), in such a way that the latter rocker arm is caused by the spring force to engage with the cam element (32) of the camshaft (16).