초록 ▼

An injection valve arrangement for injecting a pressure medium into a combustion chamber of an internal combustion engine comprises a valve body formed with a feed duct and an actuation chamber, and an elongated valve member fitted in the valve body and movable in the valve body between an open posi

An injection valve arrangement for injecting a pressure medium into a combustion chamber of an internal combustion engine comprises a valve body formed with a feed duct and an actuation chamber, and an elongated valve member fitted in the valve body and movable in the valve body between an open position and a closed position. The valve member is formed with an internal chamber which is in communication with the feed duct and is also formed with one or more nozzle orifices which provide fluid communication between the internal chamber and the combustion chamber when the valve member is in the open position. The valve member has a piston surface bounding the actuation chamber such that force acting on the valve member due to pressure in the actuation chamber urges the valve member toward its open position against the force of a spring. A control valve controls feeding of pressure medium to the actuation chamber, so that when the control valve is open, supply of pressure medium to the actuation chamber causes an increase in pressure in the actuation chamber.

대표청구항 ▼

[ We claim:] [1.] An injection valve arrangement for injecting a pressure medium into a combustion chamber of an internal combustion engine, the arrangement comprising:a valve body formed with a feed duct and an actuation chamber,an elongated valve member fitted in the valve body and movable in the

[ We claim:] [1.] An injection valve arrangement for injecting a pressure medium into a combustion chamber of an internal combustion engine, the arrangement comprising:a valve body formed with a feed duct and an actuation chamber,an elongated valve member fitted in the valve body and movable in the valve body between an open position and a closed position, the valve member being formed with an internal chamber which is in communication with the feed duct and being also formed with at least one nozzle orifice which provides fluid communication between the internal chamber and the combustion chamber when the valve member is in the open position, the valve member having a piston surface bounding said actuation chamber such that force acting on the valve member due to pressure in the actuation chamber urges the valve member toward its open position,a spring urging the valve member toward its closed position, anda control valve for controlling feeding of pressure medium to said actuation chamber, so that when the control valve is open, supply of pressure medium to the actuation chamber causes an increase in pressure in the actuation chamber.