Fuel-injection apparatus characterised by being operated electrically

FMECHANICAL ENGINEERING LIGHTING HEATING WEAPONS BLASTING ENGINES OR PUMPS F02Combustion engines F02MSUPPLYING COMBUSTION ENGINES IN GENERAL, WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF

F02M51/00Fuel-injection apparatus characterised by being operated electrically

F02M51/005Arrangement of electrical wires and connections F02M51/02specially for low-pressure fuel-injection F02M51/04Pumps peculiar thereto F02M51/06Injectors peculiar thereto with means directly operating the valve needle F02M51/0603using piezo-electric or magnetostrictive operating means F02M51/0607the actuator being hollow F02M51/061using electromagnetic operating means F02M51/0614characterised by arrangement of electromagnets or fixed armature F02M51/0617having two or more electromagnets F02M51/0621acting on one mobile armature F02M51/0625characterised by arrangement of mobile armatures F02M51/0628having a stepped armature F02M51/0632having a spherically or partly spherically shaped armature F02M51/0635having a plate-shaped or undulated armature not entering the winding F02M51/0639the armature acting as a valve F02M51/0642the armature having a valve attached thereto F02M51/0646the valve being a short body F02M51/065the valve being spherical or partly spherical F02M51/0653the valve being an elongated body F02M51/0657the body being hollow and its interior communicating with the fuel flow F02M51/066the armature and the valve being allowed to move relatively to each other or not being attached to each other F02M51/0664having a cylindrically or partly cylindrically shaped armature F02M51/0667the armature acting as a valve or having a short valve body attached thereto F02M51/0671the armature having an elongated valve body attached thereto F02M51/0675the valve body having cylindrical guiding or metering portions F02M51/0678all portions having fuel passages F02M51/0682the body being hollow and its interior communicating with the fuel flow F02M51/0685the armature and the valve being allowed to move relatively to each other or not being attached to each other F02M51/0689and permanent magnets F02M51/0692as valve or armature return means F02M51/0696characterised by the use of movable windings