Patent ID: 8056515

Claim:
A method of operating a valve ( 5 ) to the combustion chamber ( 6 ) of a combustion engine, wherein said combustion engine comprises a cylinder ( 2 ), a piston ( 3 ) displacably arranged in the cylinder ( 2 ), a combustion chamber ( 6 ) delimited by said cylinder ( 2 ) and said piston ( 3 ), and said valve ( 5 ), and a valve actuator ( 7 ) that comprises an actuator piston ( 9 ) arranged to drive the valve ( 5 ) and provided in an actuator chamber ( 8 ), wherein a pressure fluid is conducted into the actuator chamber ( 8 ) for the driving of the actuator piston ( 9 ) and, thereby, the valve ( 5 ), characterized in that pressure fluid pressurized by the pressure in the combustion chamber ( 6 ) is conducted to the actuator chamber ( 8 ) for the driving of the actuator piston ( 9 ) in a direction in which the valve ( 5 ) is opened, in connection with the opening of the valve ( 5 ).