Infineon Technologies Ag

Continental Automotive Gmbh

Vitesco Technologies Gmbh

Siemens Aktiengesellschaft

Cpt Group Gmbh

Christian Hauser

Markus Stutika

Johann Winderl

Martin Reiss

Gerd Rösel

Gerd Roesel

Jens G Pohl

Helge Schmidt

Frank Pueschner

Peter Stampka

Manfred Fries

Walter Schrod

Simon Muff

Michael Huber

Erik Heinemann

Hui Li

Frank Denk

Anatoliy Lyubar

Josef Mundigl

Frank Puschner

Achim Neu

Manfred Kramel

Heinz Lixl

Jurgen Fischer

Gabriel Marzahn

Ulrich Vidal

Joachim Engelmann

Michael Koch

Friedrich Wanninger

Robert Fromm

Martin Neumayer

Nikolay Belyaev

Harald Widner

Armin Stolz

Klaus Kiel

In some embodiments, a method includes: setting an actuation time based on a predefined injection quantity; detecting a duration of a resulting closing process; calculating an injection quantity based on the time and the duration; determining the difference of the injection quantity and the predefined quantity; and determining a corrected value of the actuation time based on the difference; and using the corrected value to control further actuation of the fuel injector. The injection quantities and the actuation time are on a characteristic diagram of the relationship between the actuation time, the duration of the closing process, and the injection quantity.

Fuel injector with a solenoid drive

A method for determining a first time at which a fuel injector having a solenoid drive is in a first predetermined opening state. The method includes the following: (a) determining a second time at which the fuel injector is in a second predetermined state, (b) determining a stroke value of a moving component of the fuel injector, which stroke value corresponds to a movement path of the moving component which is covered when the fuel injector transitions between the first predetermined opening state and the second predetermined opening state, and (c) determining the first time at which the fuel injector is in the first predetermined opening state, on the basis of the second time and the stroke value. A method for actuating a fuel injector having a solenoid drive, an engine controller and a computer program.

Determination of a point in time of a predetermined state of a fuel injector

The invention provides a device and a method for determining a pressure of a fuel () which is to be injected into a combustion chamber () via a controllable closure element () of a solenoid valve (), wherein the method comprises: generating a current flow (i) through a coil () of the solenoid valve () in order to generate a magnetic field, in order to generate a magnetic force acting on an armature (), which magnetic force shifts the armature () in the direction of the opening of the closure element (), determining a magnitude of a magnetic flux (&#x3a8;) of the magnetic field before or when a first state (I) at which the armature starts to shift the closure element is reached, and determining a magnitude of the pressure on the basis of the determined magnitude of the magnetic flux.

Pressure determination in a fuel injection valve

A method for determining an injection quantity of a fuel injector determines a first time at which an injection process of the fuel injector starts, a second time at which the injection process of the fuel injector ends, calculates a model on the basis of the first time and the second time, which model represents the position of a nozzle needle of the fuel injector as a function of the time, and calculates the quantity of fuel to inject.

Precise determining of the injection quantity of fuel injectors

A device and a method are provided for determining a stroke of an armature of a magnetic valve which has a coil and the armature is displaceable by magnetic force, including: providing at least one reference data set which includes a magnitude of a current through the coil and a magnitude of the magnetic flux in the case of a known magnitude of the stroke; generating a current flow through the coil of the magnetic valve in order to generate a magnetic field for generating a magnetic force on the armature, which magnetic force displaces the armature in the direction for the opening of a closure element coupled to the armature; determining a magnitude of the magnetic flux when the armature abuts against a driver of the closure element; and determining the magnitude of the stroke based upon the determined magnitude of the magnetic flux and the reference data set.

Determining a lift of a solenoid valve

A device and a method are provided for controlling a magnetic valve which has a coil and an armature which is displaceable by magnetic force, by means of which armature a closure element is displaceable for the purposes of injecting fuel into a combustion chamber, the method includes the steps of: energizing the coil with a voltage in accordance with a first voltage profile in order to generate a first electrical current through the coil; determining a first profile as a function of a first magnetic flux and the first current; identifying, in the first profile, a first characteristic of at least one first start of displacement at which the armature begins to displace the closure element, generating a second voltage profile and energizing the coil in accordance with the second voltage profile, such that, in a second profile, as a function of a second magnetic flux and a second current, a second characteristic of a second start of displacement is more similar to a reference characteristic than the first characteristic.

Controlling a fuel injection solenoid valve

A method for determining an opening behavior of a combustion engine fuel injector having a coil drive includes: applying to a coil of the coil drive an electrical test excitation that is weaker than an electrical standard excitation applied to the coil during normal operation of the engine, such that an opening position of the fuel injector is achieved at a point at which the coil drive is not in magnetic saturation; measuring the chronological progression of an electrical variable of the coil; determining a first point in time at which the fuel injector reaches its opening position under the influence of the electrical test excitation, based on the measured chronological progression of the electrical variable, and determining a second point in time at which the fuel injector would reach its opening position under the influence of the electrical standard excitation, based on the determined first point in time.

Determining the opening behavior of a fuel injector by means of an electrical test excitation without magnetic saturation

A method for determining a time at which a fuel injector, for an internal combustion engine of a motor vehicle, is in a predetermined opening state comprises applying a predetermined electrical voltage profile to the solenoid drive, detecting the temporal profile of the current strength of a current flowing through the coil of the solenoid drive, detecting the temporal profile of the voltage across the coil, determining a function based on the temporal profile of the current strength and the temporal profile of the voltage, wherein the function represents the interlinked magnetic flux or a temporal derivative of the interlinked magnetic flux in the solenoid drive, and determining the time as the time at which the function has a characteristic feature.

Detecting a predetermined opening state of a fuel injector having a solenoid drive

The present disclosure generally relates to internal combustion engines. The teachings thereof may be embodied in methods for the measuring of a feedback signal generated by the movement dynamics of a fuel injector in operation. A method may include: (a) generating an electrical test pulse; (b) feeding the test pulse into an actuation line connecting the output stage to the injector to an electric drive of the injector; (c) measuring an electrical response pulse generated by the actuation line in response to the test pulse; (d) identifying a characteristic feature of the measured response pulse; (e) transferring the feature to a control and evaluation unit; (f) evaluating the feature; and (g) acquiring the characteristic information item about the measuring channel based on the evaluation of the transferred characteristic feature.

Device and method for controlling a fuel injection valve

A method for detecting the commencement of opening of the nozzle needle of an injector of an injection system. In the detection method, the coil of the solenoid injector has a voltage applied to it which is so low that the armature is moved toward the nozzle needle at such a low speed that the abutment causes a stoppage of the armature movement, without the nozzle needle being opened. In this case, the idle travel is overcome, but no injection process is initiated. The abutment of the armature against the nozzle needle is detected, in the current profile, as the commencement of opening of the nozzle needle.

Method and device for detecting the commencement of opening of a nozzle needle

A method for adapting the actual injection quantity of an injector of an internal combustion engine to the target injection quantity, an injection device for an internal combustion engine, and an internal combustion engine are provided. In the method, the crankshaft acceleration achieved by a test injection pulse is detected in the rotational speed signal of the internal combustion engine and on this basis the injected fuel quantity of the injector is determined. On the basis of the determined injected fuel quantity, the actuating data of the injector of the internal combustion engine is corrected. To this end, the injected fuel quantity of the injector is detected and corrected by a test injection pulse during the normal fired operational state of the internal combustion engine.

Method for adapting the actual injection quantity, injection device and internal combustion engine

In a method for individually correcting injection quantities and/or times (mf, mf, mf . . . ; ti, ti, ti . . . ) in particular for a ballistic operating range of a fuel injector (. ), a quantity deviation of an actual injection quantity (mf, mf, mf . . . ) from a nominal injection quantity (mfnom) of the fuel injector (. ) during operation of the fuel injector (. ) is determined, and a typical injection characteristic (fup, fup, fup . . . ) of the fuel injector (. ) is adapted to a nominal injection characteristic (fupnom) based on the quantity deviation. Furthermore, a controller, in particular an engine controller may implement the above method.

Method for correcting injection quantities and/or times of a fuel injector

A method for the injector-individual adaption of the injection time of motor vehicles is based on linking the IIC method and the MFMA method. Before starting to drive, the IIC method is carried out, and while driving MFMA measurements are carried out. The measurement points obtained are used as subsequent measurement points for the IIC function. Thus injector-individual characteristic fields can be determined, in which deviations due to manufacturing and also aging and wear of the components during the service life are considered.

Method for the injector-individual adaption of the injection time of motor vehicles

A tendency of the controlled load to oscillate when controlling a capacitive load can be avoided according to a piezo actuator for an injection valve of an internal combustion engine, having charging and discharging processes for charging and discharging the capacitive load by means of a load current, each loading process being effected by chronological partial load current pulses according to chronological partial charging capacity pulses (p, p, . . . pn), wherein the envelope (E) of the partial charging capacity pulses (p, p, . . . pn), during the loading process, increases in a strictly monotonous manner in an initial phase, and the slope of the envelope decreases in a monotonous manner.

Method and device for controlling a capacitive load

A semiconductor component package configuration includes a semiconductor chip mounted to a printed circuit board, and a substrate arranged between the semiconductor chip and the printed circuit board. The substrate is for routing the wiring terminals of the semiconductor chip to the printed circuit board. The substrate is connected to the printed circuit board by solder joints. A filler between the semiconductor chip and the substrate mechanically isolates the semiconductor chip and the solder joints. A metal layer, which is connected to solder joints, is applied to the substrate. At least one molded element of heat-dissipating material is applied to the metal layer and is connected in a heat-conducting manner to the metal layer. This provides the package configuration with an improved capability of conducting the lost power that is dissipated from the installed semiconductor chip, and the desired mechanical properties of the package arrangement are retained.

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Lappersdorf, Germany

Christian Hauser