VALVE LIFTING ARRANGEMENT AND METHOD FOR OPERATING EXHAUST VALVE

摘要

The valve lifting arrangement for opening an exhaust valve (5) of a piston engine comprises a first exhaust cam (1), which is arranged to open at least one exhaust valve (5) for allowing outflow of exhaust gas from a cylinder (17) of the engine during the exhaust stroke, and a second exhaust cam (2), which can be arranged to open the exhaust valve (5) for allowing exhaust gas recirculation during the intake and/or compression stroke.