Engine braking device for combustion engine has individually switchable exhaust valve drives changeable between different valve lift curves; different curves can be implemented for exhaust valves

摘要

The internal combustion engine (3) has at least two exhaust valves (8,9) and a controllable blocking unit in the exhaust tract and individually switchable valve drives for the exhaust valves that can be selectably changed between at least two different valve lift curves, whereby different valve lift curves can be implemented for the individual exhaust valves. AN Independent claim is also included for the following: (a) a method of operating and inventive engine braking device.