Abstract
A fuel injector valve (1) of a piston engine, which comprises a fuel chamber (3) for the fuel to be injected, a valve needle (9) for guiding the fuel injection from the fuel chamber (3) into the cylinder (4) of the engine, a spring (10) for pressing the valve needle (9) towards the closed position, and a piezoelectric actuator (11) for guiding the valve needle (9). Additionally, the injector valve (1) comprises a drawbar (22), which is loosely coupled to the valve needle (9), a second drawbar (23), which is attached to the piezoelectric actuator (11) and loosely coupled to the drawbar (22), and that the injector valve (1) comprises a second spring (24) fitted in connection with the drawbar (22) for pressing the valve needle (9) towards the closed position and a third spring (25) fitted in connection with the second drawbar (23) for pressing the valve needle (9) towards the closed position.
| Original language | English |
|---|---|
| Patent number | WO2010136653 |
| IPC | F02M 51/ 06 A I |
| Priority date | 28/05/09 |
| Publication status | Published - 2 Dec 2010 |
| MoE publication type | H1 Granted patent |