About 95 results
https://drivepatents.com/patents/1080843 · 12 Jan 2005
The fuel injection valve has an actuator and a valve needle for operating a valve closure body (18) that forms a seal seat with a valve seat surface (19) formed on a nozzle body (17). A section of the nozzle body facing the valve closure body and a section...
https://drivepatents.com/patents/1081058 · 5 Jan 2005
The invention refers to a piezoelectric injector unit, in particular for injecting fuel into a vehicle engine, comprising a housing (10) containing a valve needle (32) for opening and closing a metering opening (31) and a piezoelectrically driven actuator ...
https://drivepatents.com/patents/1081137 · 29 Dec 2004
The valve (1) has an actuation train with a piezoelectric, electrostrictive or magnetostrictive actuator (2) that interacts with a valve closure body (8) that forms a seal with a valve seat (9). At least one flexible section (25,26) subject to fuel pressur...
https://drivepatents.com/patents/1081973 · 1 Dec 2004
The assembly has a piezoelectric unit (111) that expands in one dimension due to the application of a voltage to two electrodes. The unit (111) is placed between an upper cap (12) and a piston unit. A lower cap (13) is placed in a fixed distance to the upp...
https://drivepatents.com/patents/1083222 · 13 Oct 2004
The device has a part with a suspended needle (101) made of a hollow cylindrical bar closing at an end. An obturator unit (102) is placed at the end of the hollow cylindrical bar. The needle deforms itself under the action of ultrasound waves to define an ...
https://drivepatents.com/patents/1083439 · 6 Oct 2004
The invention concerns a thermal compensator unit that allows to precisely set and keep an equilibrium position. Further, the fluid chambers (4, 5) respectively comprise at least one elastic element (7, 8) so that the respective volume is variable, which e...
https://drivepatents.com/patents/1083949 · 15 Sep 2004
A valve needle (14) operates a valve-closing body (15). A hydraulic coupler (40) has a piston (37) that partly engages into a retaining hole and forms a coupler gap (50,51) with the hole. The gap is filled with hydraulic fluid and surrounded by a first bal...
https://drivepatents.com/patents/1084337 · 1 Sep 2004
A fuel injection valve for a combustion engine with a piezoelectric or magnetorestrictive actuator comprises a valve body and seat and a hydraulic fluid coupling having two movable pistons (9,10) and a coupling volume connected by a throttle to an equaliza...
https://drivepatents.com/patents/1084314 · 1 Sep 2004
The device (1) has a piezoelectric, electrostrictive or magnetostrictive actuator (2) and a valve needle (12) that interacts with the actuator and a spring element (3) and has a valve closure body (13) that interacts with a valve seat surface (14). The act...
https://drivepatents.com/patents/1084549 · 25 Aug 2004
Fuel injection valve (1) for direct injection of fuel into a combustion chamber of an internal combustion engine comprises an excitable actuator (2), a valve needle (26) actuating a valve-closing body (27) forming a sealing seat together with a valve seat ...