Patent ID: 7823559
Filing Date: 2010-11-02
Classification: F01L

Abstract:
1. An internal combustion engine having at least one cylinder ( 1 ) with inlet and outlet valves ( 5 , 7 ), a camshaft ( 23 ) with cams ( 24 , 25 ) which act on the inlet and outlet valves ( 5 , 7 ) for opening or closing inlet and outlet passages ( 4 , 6 ) of the cylinder ( 1 ), wherein lift curves (EV, AV) of the inlet and outlet valves ( 5 , 7 ) are determined by the shape of the cams ( 24 , 25 ) of the camshaft ( 23 ), and wherein the lift curve (EV) of the inlet valve ( 5 ) is phase-offset relative to the lift curve (AV) of the outlet valve ( 7 ), the camshaft ( 23 ) including an auxiliary cam ( 25 ′) for acting on the outlet valve ( 7 ) and providing for the outlet valve ( 7 ) a phase-offset auxiliary lift curve (AV Z ), which overlaps at least partly the lift curve (EV) of the inlet valve ( 5 ), the at least one cylinder ( 1 ) including further an adjustable throttle valve ( 28 ) provided as an additional outlet valve in an engine braking phase, wherein the adjustable throttle valve ( 28 ) is held in a constantly open position (TV).