A hydraulically driven fluid injection system comprising a reservoir having a first and second chamber and a piston separating the first and second chamber. A reservoir control valve to control the input of a first fuel source to the first chamber. The res...

Fuel injector for injecting fuel into combustion chamber (29) of internal combustion engine with minimum injector opening (28) with hydraulically operated nozzle needle (26) , pressure amplifier (5) and pressure amplifier piston (7) with high pressure pist...

The system has a fuel injector (1) subjected to fuel at high pressure and actuated via a metering valve device (12). Fuel is injected through injection ports into a combustion chamber. A damping chamber (38) is defined by a damping piston which has a dampi...

The fuel injecting mechanism has filling path (30) in which non-return valve (37) is arranged which opens to compression area (12) and closes to control chamber (15). Pressure balance path (38) connects control chamber with compression area. Piston rod (8)...

The fuel injector has a pressure intensifier with a piston which separates a working chamber (11) from a differential pressure chamber (16) and which pressurizes a compression chamber (19) from which runs a HP line (21) to an injection valve component hous...

Booster (1) for a fuel injector comprises a differential pressure chamber (4) and a compression chamber (5) for loading a high pressure inlet (7), and a piston (3) that is actuated by pressure changes in the differential pressure chamber connected via a co...

An oil activated fuel injector includes a control valve body with end cap solenoids and a slidably mounted spool. A minimized contact surface area exists between the spool and one of the first and second solenoid coils providing a minimized ratio of surfac...