초록 ▼

A valve control mechanism for intake and exhaust valves of internal combustion engines is provided. The valve control mechanism has at least one piezo element, at least one valve element operated thereby, and at least one adjustment piston. Inflow and outflow of a pressure medium to the adjustment p

A valve control mechanism for intake and exhaust valves of internal combustion engines is provided. The valve control mechanism has at least one piezo element, at least one valve element operated thereby, and at least one adjustment piston. Inflow and outflow of a pressure medium to the adjustment piston is controlled by the valve element. The adjustment piston is moveable by the pressure medium, against a counter pressure, for opening an intake or exhaust valve.

대표청구항 ▼

1. A valve control mechanism for intake and exhaust valves of internal combustion engines, comprising:at least one piezo element; at least one valve element, said valve element operated by said at least one piezo element; at least one adjustment piston, wherein inflow and outflow of a pressure mediu

1. A valve control mechanism for intake and exhaust valves of internal combustion engines, comprising:at least one piezo element; at least one valve element, said valve element operated by said at least one piezo element; at least one adjustment piston, wherein inflow and outflow of a pressure medium to said at least one adjustment piston is controlled by said at least one valve element, and wherein said at least one adjustment piston is moveable by said pressure medium, against counter pressure, for opening an intake or exhaust valve; and a pressure line for supplying said pressure medium, said pressure line connected to a pressure medium source, wherein said pressure line is connected to a surge chamber disposed in front of said adjustment piston when said valve element is in an open position, wherein said connection between said pressure line and said surge chamber is closed when said intake and exhaust valve is in a closed position, and wherein a tank line is simultaneously opened and the pressure medium is displaced through the adjustment piston into the tank line.