EP2612018A1 - Method and device for setting an idle stroke of an actuating drive of an injection valve, and injector assembly - Google Patents

Abstract

The invention relates to a method and a device for setting an idle stroke (D) of an actuating drive (22) of an injection valve with regard to an actuating element (26) which can be actuated by the actuating drive (22). The actuating drive (22) is arranged in an injector body (14) and the actuating element (26) is arranged in an actuating-element housing (16) such that it can be moved in the direction of a longitudinal axis (A). An axial stressing force is applied to the injector body (14) and the actuating-element housing (16) in such a way that part of the injector body (14) or part of the actuating-element housing (16) which is arranged in the injector body (14) and the actuating-element housing (16) in a force flow path which is formed by the axial stressing force is deformed permanently, until a value (VAL_EL) of a representative electric variable which is determined directly or indirectly for the idle stroke (D) of the actuating drive (22) lies in a predefined value range. Furthermore, the invention relates to an injector assembly (10) for an injection valve, having an injector body (14) which has an injector-body recess (20), and having an actuating-element housing (16). The injector body (14) and/or the actuating-element housing (16) have/has a contact section (46) which is elevated in the axial direction.

Description

description

Method and device for adjusting an idle stroke of an actuator of an injection valve and Inktorbaugruppe

The invention relates to a method and a corresponding device for adjusting an idle stroke of an actuator of an injection valve with respect to an actuatable by the actuator actuator, as well as in ektorbaugruppe.

Increasingly strict legal requirements regarding the zuläs ^¬ sigen pollutant emission of internal combustion engines, which are arranged in motor vehicles, making it necessary to take various measures, which are reduced by the Schadstoffemis ^¬ emissions. The formation of pollutants is highly dependent on the treatment of the air / fuel mixture in the respective cylinder of the internal combustion engine. A correspondingly improved mixture preparation can be achieved if the fuel is metered under very high pressure. For internal combustion engines with diesel, the fluid amount pressures over 2000 bar. In particular, in the case of internal combustion engines ^¬ high demands on the precision of the

Injector assembly provided.

The object of the invention is a method and an ent ^¬ speaking device for adjusting a Leerhubs an actuator of an injector and a

To provide Injektorbaugruppe, which allow reliable Be ^¬ drive the injector.

The object is solved by the features of the independent claims. Advantageous developments of the invention are characterized in the subclaims. The invention is characterized according to a first and a second aspect by a method and a corresponding device for adjusting an idle stroke of a Stellan ^¬ drive an injection valve with respect to an actuatable by the actuator actuator. The actuator is in an in ektorkörper and the actuator in the direction of

Longitudinal axis movably arranged in an actuator housing. The injector body and the actuator housing are arranged in the axial direction to each other. An axial clamping force is applied to the injector body and the actuator housing such that a part of the injector body or a part of the actuator housing disposed in a force flow path formed by the axial clamping force in the injector body and the actuator housing is permanently deformed until a value of a representative electrical variable determined directly or indirectly for the idle stroke of the actuator is within a predetermined value range.

This has the advantage that the idle stroke of the actuator can be adjusted with high accuracy. Furthermore, the setting of the idle stroke can be done at low cost.

In an advantageous embodiment, the representative of the idle stroke of the actuator electrical variable is representative of a closing time of the injection valve. This has the advantage that an available during operation of the injector size for adjusting the idle stroke can be used.

In a further advantageous embodiment, the axial clamping force on the injector body and the actuator housing is at least partially applied by means of a separate from the injection valve ^{¬ a} tensioning device. this has the advantage that the axial clamping force independently of Kompo ^¬ components of the injector by the clamping device on the In ector body and the actuator housing is applied ^¬ who can.

In a further advantageous embodiment, an axial clamping force with a predetermined first value is applied to the injector body and the actuator housing by means of the separate from the injector clamping device. By means of a clamping element of the injection valve is a further axial clamping force with a predetermined value on the

Injector body and the actuator housing applied. A Ba ^¬ siswert the representative for the return stroke of the actuator electrical quantity is determined. A dependent on the determined base value second value of the axial clamping force of the clamping device is determined. The axial clamping force of the clamping device with the determined second value is applied to the injector body and the actuator housing. The axial clamping force of the clamping element on the injector body and the actuator housing is varied until the value of the representative for the idle stroke of the actuator electrical variable is in the predetermined value range. This has the advantage that different axial clamping forces of the clamping elements, for example in clamping elements from under ^¬ different production batches, can be compensated by the clamping device. Thus, a correct with regard to the accuracy of Leerhubs mounting of the clamping element can be achieved. Thus, a high accuracy can be achieved when setting the idle stroke.

In a further advantageous embodiment, after the axial clamping force of the clamping device to the determined second value to the injector body and the Stellgliedge ^¬ housing is applied, the axial tension force of the Spannele- ments on the injector and the actuator housing first varies until the value of the representative of the idle stroke of the actuator electrical quantity in a predetermined limit range outside the predetermined value range. The axial clamping force of the tensioning device with the determined second value is then applied to the injector body and the actuator housing until the value of the electrical variable representative of the idle stroke of the actuator is within the predetermined value range. The injector body and the actuator housing are then completely relieved of the axial clamping force of the separate from the injector tensioner. This has the advantage that a subsequent flow of the injector body and / or the actuator housing is omitted, that is, that the value of the representative for the idle stroke of Stellan ^¬ electrical variable in the predetermined value range changes as little as possible.

In a further advantageous embodiment, the actuator is premeasured by a dependence of a stroke of the actuator is determined by a characteristic electrical signal of the actuator. Depending on the stroke of the actuator, the value range of the electrical variable representative of the idle stroke of the actuator is determined. The characteristic electrical signal of the Stellan ^¬ drive, for example, representative of the operating characteristic of the actuator. This has the advantage that depending on the drive signal of the actuator different stroke behavior of actuators when setting the idle stroke can be compensated.

In a further advantageous embodiment, together with the axial clamping force of the separate from the injector clamping device, a radial support force with a given value on the in ektorkörper and / or the actuating ^¬ membered housing is applied, a first value of the data representative of the idle stroke of the actuator electrical quantity being averages ^¬, the injector body and / or the actuator housing is of the axial clamping force and the radial support ^¬ force is relieved, a second value of the representative of the idle stroke of the actuator electric variable is determined, depending on the first value and the second value of the value range of representative for the idle stroke of the actuator electrical quantity is determined, the axial clamping ^¬ force of the injector separate clamping device and the radial support force are applied to the injector body and / or the actuator housing, and the axial clamping force of the clamping element on the injector body and the actuator housing is varied until the value of the representative of the idle stroke of the actuator electrical variable i n is the predetermined value range. This has the advantage that individual deformations of the injector body and / or the actuator housing due to axially and / or radially acting on the injector forces when Ein ^¬ make the idle stroke can be compensated.

The invention is distinguished according to a third aspect by an injector for an injection valve, with egg nem injector body ektorkörperausnehmung a Inj has ^¬ in which an actuator is arranged, an actuating ^¬ membered housing having a Stellgliedgehäuseausnehmung in which a Actuator is arranged to be movable in the direction of a longitudinal axis. In a closed position of the actuator is a fluid flow through at least one injection opening and otherwise changed verhin ^¬ a fluid flow is released by the Einspritzöff ^¬ voltage. The injector body and the Stellgliedgehäu ^¬ se are arranged in the axial direction to each other. Of the

Injector body and / or the actuator housing has an in axial direction raised contact portion. This has the advantage that the idle stroke of the actuator can be adjusted in a simple Wei ^¬ se and with high accuracy.

In a further advantageous embodiment, the contact portion is formed as at least one biting edge. This has the advantage that a very secure fluid-tight contact between the In ektorkörper and the actuator housing is possible.

In a further advantageous embodiment, the contact portion is annular. This has the advantage that a deformation of the contact portion in all radial directions is possible.

Embodiments of the invention are explained below with reference to the schematic drawings.

Show it:

FIG. 1 shows an injection valve in longitudinal section,

2 shows a part of the injection valve in a perspektivi ^¬'s view

3 shows a flow chart of a program for setting ei ^¬ nes idle stroke of an actuator of the Einspritzven ^¬ TILs

 Figure 4 is a flowchart of another program for adjusting the idle stroke of the actuator, and

 Figure 5 is a flowchart of another program for adjusting the idle stroke of the actuator.

Elements of the same construction or function are provided with the same reference characters across the figures. 1 shows an injection valve with a ektorbaugruppe In ektorbaugruppe 10 having a longitudinal axis A. The In 10 has ei ^¬ NEN injector body 14 and an actuator housing 16. The actuator housing 16 is designed in several parts and has a recess 17. The recess 17 in the actuator housing 16 is connected to a high-pressure circuit, not shown

Fluids coupled. It is coupled to the high-pressure circuit in an installed state of the injection valve. The actuator housing 16 is fixedly coupled to the injector body 14 by means of a clamping element 18 designed as a nozzle retaining nut. The actuator housing 16 and the injector body 14 form a common housing of the injection valve.

The injector body 14 has a recess 20 in which an actuator 22 is arranged. The actuator 22 is designed as a stroke actuator and is preferably a

Piezoactuator comprising a stack of piezoelectric elements. The piezoactuator changes its axial extent depending on an applied voltage signal. However, the actuator 22 may also be designed as another known to those skilled in the art for this purpose actuator, in particular as a solenoid.

The actuator 22 acts via a piston-shaped

Transmitter 24 on an actuator 26 a. The actuator 26 comprises a bell-shaped body 28, a lever device 30 and a nozzle needle 32. The bell-shaped body 28, the lever device 30 and the nozzle needle 32 are arranged in the recess 17 of the actuator housing 16. The gudgeon-shaped body 28 is coupled to the lever device 30. The nozzle needle 32 has a nozzle needle head 34. The lever device 30 cooperates with the nozzle needle head 34 for the axial movement of the nozzle needle 32. The actuator 26 further includes a pin 35. The bell ^¬-shaped body 28 is coupled via the pin 35 with the transmitter 24 of the actuator 22nd The nozzle needle 32 is guided in a region of the recess 17 of the actuator housing 16. It is biased by means of a Düsenfe ^¬ 36 so that it prevents fluid flow through at least ^¬ least one arranged in a nozzle tip 38 of the actuator housing 16 injection port 40 when no further forces act on the nozzle needle 16. The nozzle spring 36 is arranged between a bearing 42 of the actuator housing 16 and a shoulder 44 of the nozzle needle 32, and so pre-tensioned ^¬ that it exerts on the nozzle needle 32 a force acting in the closing Rich ^¬ processing power.

The actuator housing 16 has a raised contact portion 46 in the axial direction. The contact portion 46 is in particular ^¬ special arranged at an injector body 14 facing the end of the actuator housing 16 between the injector body 14 and the actuator housing 16. In one application of a suitable axial clamping force to the injector body 14 and the actuator housing 16, the contact portion 46 deforms ei ^¬ ne contact point on the injector 14 plastically. Alternatively, the contact section 46 can also be deformed by a suitable choice of material. In further embodiments, the contact section 46 may also be arranged on the injector body 14. Preferably, the contact portion 46 is annular, so that a deformation of the contact portion 46 over the circumference of the In ektorkörpers 14 or the actuator housing 16 is possible (Figure 2).

The injector assembly 10 is a control unit 48 zugeord ^¬ net, which has sensors that he ^¬ various measured variables and each of which can determine the value of the measured variables NEN. The control unit 48 determines, as a function of at least one of the measured variables, manipulated variables which can then be converted into one or more actuating signals for controlling actuators by means of corresponding actuators. The control unit 48 may be ^¬ be characterized as a device for adjusting the idle stroke of the actuator 22 of the injector.

The following shows the function of the injection valve:

 By activating the actuator 22 designed as a piezoactuator, it expands. After overcoming one

Leerhubs D applies to the transmitter 24 on the pin 35, and the nozzle needle 32 is lifted by means of the bell-shaped body 28 and the lever means 30 from the sealing seat. Thus, the nozzle needle 32 moves in the direction of the actuator 22, whereby the at least one injection port 40 is released in the nozzle tip 38. If the injection valve 10 is designed as a fuel injection valve, an injection of fuel into a combustion chamber of an internal combustion engine can now take place. As soon as the injection is to be ended, the actuator 22 is deactivated. As a result, the actuator 22 designed as a piezo actuator contracts, and the nozzle needle 32 is moved away from the actuator 22 with the support of the nozzle spring 36 in the axial direction. Thus, the nozzle needle 32 enters a closed position and the fluid flow through the at least one injection port 40 is prevented. A first program shown schematically in FIG. 3 for controlling the device for adjusting the idle stroke of the actuator of the injection valve is preferably stored on a storage medium of the control unit 48. The program is preferably started in a step S10, in which if necessary, variables are initialized. This is preferably done at the beginning of setting the idle stroke of

Actuator of the injector. In a step S12, processing means of a separate from the injection valve Spannvorrich- 50 (Figure 1) is applied an axial clamping force with a pre give ^¬ NEN first value F_l on the injector body 14 and the actuator housing sixteenth In a step S14 is applied a further axial clamping force with a predetermined value F_SE on the injector body 14 and the actuator housing 16 with ^¬ means of the clamping element 18 of the injection valve. By applying the axial clamping forces on the

Injector 14 and the actuator housing 16 is a part of the injector body 14 and / or a part of the Stellgliedgehäu ^¬ ses 16, which is arranged in a trained by the axial clamping force th flow path in the injector 14 and the actuator ^¬ housing 16, permanently deformed. In the embodiment shown in Figure 1 disclosed embodiment of the injection valve, in particular of the contact portion 46 is supplied ^¬ turned part of the injector body 14 is plastically deformed in this case. In a step S16, a base value VAL_EL_BAS for the

Leerhub D of the actuator 22 representative electrical size determined. Preferably, the representative of the idle stroke D of the actuator 22 electrical quantity is representa tive ^¬ for a closing time of the injector. The underlying VAL_EL_BAS the representative for the return stroke D of the actuator 22 electrical quantity can be directly or indirectly he ^¬ averages. An indirect determination can take place, for example, by means of a pressure sensor which detects a pressure curve in the recess 17 in the actuator housing 16. In a step S18, one of the determined base value

VAL_EL_BAS dependent second value F_2 of the axial clamping force of the clamping device 50 is determined, and the axial clamping force of the clamping device 50 with the determined second value F_2 is applied to the injector body 14 and the actuator housing 16th applied. In a step S20, the value of the F_SE axi ^¬ alen tensioning force of the tensioning element 18 to the injector 14 and the actuator housing 16 is varied. In a step S22, it is checked whether a value VAL_EL of the electrical variable representative of the idle stroke D of the actuator 22 is within a predetermined value range with a minimum value

VAL_EL_MIN and a maximum value VAL_EL_MAX. If the condition of the step S22 is not satisfied, the processing in the step S20 is continued. If the condition of step S22 is fulfilled, the processing is in one

 Step S24 continues. In step S24, the program is ended.

Due to the illustrated application of the axial clamping force of the clamping device 50, a variation of the axial clamping force of different clamping elements 18, for example due to different batches of the clamping element 18, can be compensated. Thus, a high accuracy in adjusting the idle stroke D can be achieved.

4 shows a second program for controlling the device for adjusting the idle stroke of the actuator of the injection valve is shown schematically. The program is preferably started in a step S100 in which, if appropriate, variables are initialized. In one step

S102 is by means of the clamping device 50, an axial clamping force with the predetermined first value F_l on the

In ektorkörper 14 and the actuator housing 16 applied. In a step S104, the further axial clamping force with the pre-specified value ^¬ F_SE on the injector body 14 and the actuator housing 16 is applied by the tension member 18 of the injection valve. In a step S106, the base value VAL_EL_BAS of the electrical displacement representative of the idle stroke D of the actuator 22 is determined. In one Step S108 becomes the one of the determined base value

VAL_EL_BAS dependent second value F_2 of the axial clamping force of the clamping device 50 is determined, and the axial clamping force of the clamping device 50 with the second value F_2 is applied to the In ektorkörper 14 and the actuator housing 16. In a step S110, the value F_SE of the axial clamping force of the clamping element 18 is varied to the In ector body 14 and the actuator housing 16. In a step S112 it is checked whether the value VAL_EL of the idle stroke D of

Actuator 22 representative electrical variable in a predetermined limit LIM outside the predetermined Wer ^¬ tebereichs. If the condition of step S112 is not satisfied, the processing in step S110 is continued. If the condition of step S112 is satisfied, the processing is continued in step S114. By doing

Step S114, the axial clamping force of the clamping device 50 with the determined second value F_2 on the

Injector 14 and the actuator housing 16 applied. In a step S116, it is checked whether the value VAL_EL is the representative of the idle stroke of the actuator 22 D elekt ^¬ step size in the predetermined range of values with the minimum value and the maximum value VAL_EL_MIN VAL_EL_MAX. If the condition of the step S116 is not satisfied, the processing in the step S114 is continued. If the condition of step S116 is satisfied, the processing is continued in step S118. In step S118, the injector body 14 and the actuator housing 16 are relieved of the axial clamping force of the tensioner 50 separate from the injector. In step S120, the program is ended.

VAL_EL the value of the representative for the idle stroke of the D Stellan ^¬ drive 22 electrical variable first reaches the predetermined limit range LIM outside the predetermined advertising ues Eich (step S112), and the axial clamping force of the clamping device 50 with the second value F_2 is then further applied to the injector body 14 and the Stellgliedge ^¬ housing 16 (step S114), then the

In ektorkörper 14 or the actuator housing 16 still flow. As a result of this flow process, the value VAL_EL of the electrical variable representative of the idle stroke D of the actuator 22 can reach the predetermined value range with the minimum value VAL_EL_MI and the maximum value VAL_EL_MAX. Be of the injector body 14 and the actuator housing 16 is completely then released from the axial urging force of the Spannvorrich ^¬ tung 50 (step S118), the flow process ends. Thus, the idle stroke D can be set very accurately. FIG. 5 schematically shows a third program for controlling the device for adjusting the idle stroke of the actuator of the injection valve. The program is preferably started in a step S200 in which variables are initialized if necessary. In a step S202, a predetermined radial supporting force having a value F_RAD together with the axial clamping force of the tensioner 50 separate from the injector is applied to the

Injector 14 and the actuator housing 16 applied. In a step S204 a first value is determined VAL_EL_1 the data representative of the idle stroke D of the actuator 22 electrical ^¬'s size. In a step S206, the

Injector body 14 and the actuator housing 16 together with the axial clamping force of the separate from the injector clamping device 50 of the radial support force F_RAD unloaded. In a step S208 a second value is determined VAL_EL_2 the data representative of the idle stroke of the actuator 22 D elekt ^¬ step size. In a step S210, the predetermined range of values for the idle stroke D of the actuator 22 representative electrical variable with the minimum value VAL_EL_MIN and the maximum value VAL_EL_MAX determine VAL_EL_1 and the second value VAL_EL_2 depending on the first value. In a step S212, the radial supporting force having the value F_RAD together with the axial clamping force of the clamping device 50 separate from the injection valve is set to

In ektorkörper 14 and the actuator housing 16 applied. In a step S214, the axial clamping force of the clamping ^¬ elements 18 to the injector 14 and the Stellgliedge ^¬ housing 16 is varied. In a step S216, it is checked whether the value VAL_EL is the representative of the idle stroke D of the actuator 22 electrical quantity in the predetermined values ^¬ area with the minimum value and the maximum value VAL_EL_MIN VAL_EL_MAX. If the condition of step S216 is not met, the processing in step S214 is continued. If the condition of the step S216 is satisfied, the processing proceeds to a step S218 in which the program is ended. Thus, individual, non-permanent deformations of the injector body 14 and / or the actuator housing 16 due to axially and / or radially acting on the injector forces when adjusting the idle stroke D can be compensated, and the idle stroke D can be set very accurately.

Furthermore, the value range of the value VAL_EL of the electrical variable representative of the idle stroke D of the actuator 22 can be determined depending on how the stroke of the actuator 22 is dependent on a drive signal of the actuator 22. Such a dependence of the stroke of the actuator 22 can be compensated in such a way when setting the idle stroke D in a simple manner.

Claims

claims 1. A method for setting an idle stroke (D) of a Stellan ^¬ drive (22) of an injection valve with respect to one of the actuator (22) operable actuator (26), wherein the Actuator (22) in an in ektorkörper (14) and the adjusting ^¬ member (26) in the direction of a longitudinal axis (A) is movably arranged in an actuator housing (16), and the Injector body (14) and the actuator housing (16) are arranged in the axial direction to each other, in which - An axial clamping force on the injector body (14) and the actuator housing (16) is applied, such that a part of the injector body (14) or a part of the Stellgliedge ^¬ housing (16) formed in a formed by the axial clamping force Force flow path in the injector body (14) and the actuator housing (16) is permanently deformed, until a value (VAL_EL) of the idle stroke (D) of the actuator (22) directly or indirectly determined representative electrical variable in a given Value range. 2. The method of claim 1, wherein the representative of the idle stroke (D) of the actuator (22) electrical size is re ^¬ presentative for a closing time of the injection valve. 3. The method according to any one of the preceding claims, wherein the axial clamping force on the injector body (14) and the actuator housing (16) is at least partially applied by means of a separately formed by the injection valve clamping device (50). 4. The method of claim 3, wherein - By means of separate from the injector Spannvorrich ^¬ device (50) an axial clamping force with a predetermined ers th value (F_l) is applied to the In ektorkörper (14) and the actuating ^¬ membered housing (16),  - By means of a clamping element (18) of the injection valve, a further axial clamping force with a predetermined value (F_SE) on the In ektorkörper (14) and the actuator housing (16) is applied,  a base value (VAL_EL_BAS) of the electrical displacement representative of the idle stroke (D) of the actuator (22) is determined, a second value (F_2) of the axial clamping force of the tensioning device (50) which is dependent on the determined base value (VAL_EL_BAS) is determined, - the axial clamping force of the clamping device (50) with which it ^¬ mediated second value (F_2) on the injector (14) and the actuator housing (16) is applied, and  - The axial clamping force of the clamping element (18) on the Injector body (14) and the actuator housing (16) is varied until the value (VAL_EL) of the idle stroke (D) of the actuator (22) representative electrical variable is in the predetermined range of values. 5. The method of claim 4, wherein, after the axial clamping force of the clamping device (50) with the determined second value (F_2) is applied to the injector body (14) and the actuator housing (16),  - The axial clamping force of the clamping element (18) on the Injector body (14) and the actuator housing (16) is first varied so long ^¬ until the value (VAL_EL) for the Leerhub (D) of the actuator (22) representative electrical see size in a predetermined limit range (LIM) is outside the predetermined value range, and - the axial clamping force of the clamping device (50) with which it ^¬ mediated second value (F_2) on the injector (14) and the actuator housing (16) then still listed as long as is brought until the value (VAL_EL) of the idle stroke (D) of the actuator (22) representative electrical quantity is in the predetermined value range, and  - In the ektorkörper (14) and the actuator housing (16) then completely relieved of the axial clamping force of the separate from the injection valve clamping device (50). 6. The method according to any one of claims 4 and 5, wherein - The actuator is premeasured by a dependence of a stroke of the actuator (22) is determined by a characteristic electrical signal of the actuator (22), and  - Is determined depending on the stroke of the actuator (22) the value range of the idle stroke (D) of the actuator (22) representative electrical variable. 7. The method according to any one of claims 4 to 6, wherein  - Together with the axial clamping force of the injection valve separate clamping device (50) a radial supporting force with a predetermined value (F_RAD) on the Injector body (14) and / or the actuator housing (16) is applied,  a first value (VAL_EL_1) of the electrical displacement representative of the idle stroke (D) of the actuator (22) is determined,  the injector body (14) and / or the actuator housing (16) are relieved of the axial clamping force and the radial supporting force, a second value (VAL_EL_2) of the idle stroke (D) of the Actuator (22) is determined representative electrical size, - the value range of the idle stroke (D) of the actuator (22) representative electrical size is determined depending gig of the first value (VAL_EL_1) and the second value (VAL_EL_2),  - The axial clamping force of the injection valve separate clamping device (50) and the radial support force with the value (F_RAD) on the In ektorkörper (14) and / or the actuator housing (16) is applied, and  - The axial clamping force of the clamping element (18) on the In ektorkörper (14) and the actuator housing (16) is varied until the value (VAL_EL) of the idle stroke (D) of the actuator (22) representative electrical variable is in the predetermined value range. 8. An apparatus for adjusting a Leerhubs (D) of a setting ^¬ drive (22) of an injection valve with respect to one of the actuator (22) operable actuator (26), wherein the Actuator (22) in an injector (14) and the actuator ^¬ (26) in the direction of a longitudinal axis (A) is movably arranged in an actuator housing (16), and the Injector body (14) and the actuator housing (16) are arranged in the axial direction to each other, wherein the device is designed for  - Applying an axial clamping force on the injector body (14) and the actuator housing (16), such that a part of the injector body (14) or a part of the actuator housing (16) formed in a force flow path formed by the axial clamping force in the injector body ( 14) and the actuator housing (16) is permanently deformed, until a value (VAL_EL) one for the idle stroke (D) of Actuator (22) directly or indirectly determined representative electrical size is within a predetermined range of values. 9. Injector assembly (10) for an injection valve, with - In an ektorkörper (14), the one In ektorkörperausnehmung (20), in which a Stellan ^¬ drive (22) is arranged, - An actuator housing (16) having a recess (17) up, in which an actuator (26) in the direction of a ^{Längsach ¬} se (A) is arranged to be movable, such that in one Closing position of the actuator (26) prevents fluid flow through at least one injection port (40) and otherwise a fluid flow through the at least one injection port (40) is released, and the injector body (14) and the actuator housing (16) are arranged in the axial direction to each other, wherein the injector body (14) and / or the actuator housing (16) has a raised in the axial direction contact portion (46). 10. Injektorbaugruppe (10) according to claim 9, wherein the contact portion (46) is formed as at least one biting edge. 11. injector assembly (10) according to claim 9 or 10, wherein the contact portion (46) is annular.