Patent ID: 8813719
Filing Date: 2014-08-26
Classification: F01L

Abstract:
1. An internal combustion piston engine based on a four-stroke process, comprising a crankcase in which at least one cylinder/piston assembly is arranged, the piston being guided by a connecting rod connected to a crankshaft, at least one cylinder head for closing the cylinder, the intake and exhaust channels of the at least one cylinder are controlled by at least one intake valve and one exhaust valve, said intake and exhaust valves being actuable by a rocker arm or a finger lever driven by a camshaft through intake and exhaust cams, the rocker arms or finger levers are guided on at least one axle, and a brake control device which comprises, in a region of a base circle of the exhaust cam, at least one additional cam for an additional opening of at least one of the exhaust valves, and in which a control element is installed between the rocker arm or finger lever and the at least one exhaust valve, the control element comprising a separate outer housing and a working piston and a control piston assembled within the separate housing, the control element is connected to a pressurized oil circulation system of the internal combustion piston engine and has a length that can be varied, so that the additional cam is active during a braking operation and inactive during a pure engine operation, the control element is arranged in a bridge that is associated with a plurality of the exhaust valves.