A valve (100) comprises a barrel (104) having a central bore (110), an inlet (112), and an outlet (114, 116), and a spool (120) disposed for motion within the central bore, including a ball tip (128), a metering edge (130), and a bore (132). The spool is moveable between a closed position, wherein the ball tip engages a seat (142) to prevent fluid flow through the inlet and the metering edge is disposed in a lower chamber (148) of the central bore to prevent the fluid flow through the outlet, and an opened position, wherein the tip is spaced apart from the seat to permit fluid flow through the inlet and the spool bore into an upper chamber (154) of the central bore to equalize pressure on the spool, and the metering edge is disposed in a flow path of the outlet to permit fluid flow through the outlet.

An object of this disclosure is to provide a fuel injection device that can reliably detect an operation timing of a valve body, that is, a valve opening timing with high accuracy. The current of an electromagnetic valve reaches I2 at time t3, an FET 201 and an FET 221 are turned on, and a battery voltage VB is applied to the electromagnetic valve until time t5 is reached. The amount of displacement of the valve body reaches a target amount of control lift at time t4 between time t3 and time t5, that is, a movable core 304 comes into contact with a fixed core 301. The detection of the valve opening timing is performed during the period from time t3 to time t5.

An apparatus for controlling the lift of a valve member in a flow control valve comprises an end stop assembly having at least two pieces, a plunger with one end interposed between these pieces and biasing members that urge the pieces into contact with the plunger. The plunger is movable by an actuator to thereby move the pieces of the end stop assembly from a first position in which the pieces of the end stop assembly form a first surface for contacting the valve member to a second position in which the pieces form a second surface that comes into contact with the valve member when the valve member is lifted from its seated position, to thereby allow different discrete lifts of the valve member.

An electromagnetic actuator includes an electrical coil and a high permeability magnetic flux path. The magnetic flux path includes a magnetic core, an armature and a flux return structure. The electromagnetic actuator further includes a flux sensor which is integrated within the actuator and is configured to detect a magnetic flux within the high permeability magnetic flux path.

The invention is an electromagnetic valve, comprising at least one valve seat arranged between at least one inlet channel and at least one outlet channel, a sealing element by which the valve seat can be closed, and an actuating element by which the sealing element can be moved in order to close the valve seat, with the actuating element comprising at its end pointing to the sealing element a cup-shaped seat, with a support element being arranged in said cup-shaped seat, and a sealing element that is connected fixed to the support element.

The invention relates to a fuel metering device for regulating the delivery rate of a high-pressure fuel pump of a fuel injection device for an internal combustion engine. The fuel metering device has a control valve actuated by an electromagnet and having a valve member. The electromagnet has an armature and an armature rod and the armature rod is axially movably supported in at least one bushing. The at least one bushing is designed as a solid, one-piece metal component. The bushing is preferably made of steel and the bearing surface thereof, in which the armature rod is supported, has a nitrocarburized and polished surface layer.

An apparatus for closed loop operation of a solenoid-activated actuator includes an external control module and a power source which are electrically and operatively coupled to an activation controller of the actuator. The external control module and the power source are located externally to the actuator. The apparatus further includes an activation controller which is integrated within the body of the actuator. The activation controller includes a control module and an actuator driver and is configured to communicate with the external control module and to receive electrical power from the power source. The apparatus additionally includes at least one sensor device which is integrated within the body of the actuator and is electrically and operatively coupled to the activation controller. The at least one sensor device is configured to measure one or more parameters during operation of the actuator and the measured parameters are provided as feedback to the activation controller.

A fluid injector for a combustion engine is disclosed, including an injector housing having a fluid path wherein the fluid path extends along a longitudinal axis from an injector inlet to an injector outlet; a coil; a pole piece; a first valve adapted to act on the fluid path and having a first armature; a second valve adapted to act on the fluid path and having a second armature. The first armature and the second armature are arranged proximate to the pole piece on antipodal sides of the pole piece along a longitudinal direction.

In a fuel injection valve, it is possible to obtain spray in which the penetrating force of injected fuel is suppressed. The fuel injection valve includes a valve seat that forms a gap with a valve body, the gap allowing fuel to pass therethrough, and multiple injection holes that are located further downstream from the gap. The fuel to which pressure is applied flows out from the injection holes. When the flow velocity of the fuel in the gap formed between the valve body and the valve seat is indicated by meters per second, the flow velocity is set to be greater than a value obtained by multiplying the square root of the pressure applied to the fuel by 28. In this manner, the flow velocity in the gap increases, and flow velocity distribution inside the injection hole is uniformized, thereby suppressing an increase in penetration.

A method for regulating a common rail injector, the method including acquiring a signal of a sensor, which signal is proportional to a pressure in a valve space of the common rail injector; evaluating a change in the signal over time in order to detect at least one operating event of the common rail injector; and modifying at least one operating variable of the common rail injector as a function of the at least one operating event, the at least one operating variable being selected from an opening duration, a closing duration, an opening point in time, and a closing point in time of a switching valve of the common rail injector, and from an opening duration, an opening point in time, and a closing point in time of a needle valve of the common rail injector.