[0001] The invention relates to an electrical connector for an injector, an actuator unit
for an injector, an injector and a method for coupling a first connector element to
a second connector element of an electrical connector for an injector.
[0002] Injectors are in wide spread use, in particular for internal combustion engines where
they may be arranged in order to dose the fluid into an intake manifold of the internal
combustion engine or directly into the combustion chamber of a cylinder of the internal
combustion engine.
[0003] In order to enhance the combustion process in view of the creation of unwanted emissions,
the respective injector may be suited to dose fluids under very high pressures. The
pressures may be in case of a gasoline engine, for example the range of up to 200
bar or in the case of diesel engines in the range of up to 2,000 bar. The injection
of fluids under such high pressures has to be carried out very precisely.
[0004] Injectors for an internal combustion engine comprise actuator units. In order to
inject fuel, the actuator unit is energized so that a fluid flow through the fluid
outlet portion of the injector is enabled.
[0005] An electrical connector for an injector according the preamble of claim 1 is disclosed
in
DE 10 2005 024 196 A1.
[0006] DE 10 2005 024 196 A1 discloses a fuel injector, for an internal combustion motor, with a piezo actuator
to operate the injection valve. A circuit with contact pins is arranged between the
group of contacts and the actuator as a connection component group with two sections.
The actuator contact pins are each held at the clamp contacts of the sections.
[0007] The object of the invention is to create an electrical connector for an injector,
an actuator unit and an injector which are simply to be manufactured and which facilitate
a reliable and precise function of the injector. Furthermore, the object of the invention
is to create a method for coupling a first connector element to a second connector
element of an electrical connector for an injector that is simply to realize and which
facilitates a reliable and precise function of the injector.
[0008] These objects are achieved by features of the independent claims. Advantageous embodiments
of the invention are given in the sub-claims.
[0009] According to a first aspect the invention is distinguished by an electrical connector
for an injector comprising a first connector element and a second connector element,
the first connector element comprising a connector body, and an electric conductor
being mechanically coupled to the connector body, being designed for an electrical
coupling to a power supply and having an external electric conductor section outside
the connector body, the external electric conductor section extending in a longitudinal
direction, the second connector element comprising a supporting element being designed
as a cylinder with a longitudinal axis, a first electric pin being rigidly coupled
to the supporting element and being designed for an electrical coupling to an actuator
unit of the injector, and a second electric pin being rigidly coupled to the supporting
element and electrically coupled to the first electric pin, the second electric pin
being electrically coupled to the external electric conductor section of the first
connector element in a mechanically tension-free manner and extending in a plane being
parallel to the longitudinal direction of the external electric conductor section.
[0010] This means, that the smallest angle between the plane and the longitudinal axis is
equal to the angle between the longitudinal direction of the external electric conductor
section and the longitudinal axis.
[0011] This has the advantage that there is no mechanical preload to the coupling area of
the electric conductor of the first connector element with the second electric pin
of the second connector element in the longitudinal direction of the electric conductor.
Furthermore, the coupling between the electric conductor and the second electric pin
can be carried out in a mechanical robust manner.
[0012] The second electric pin is extending in the longitudinal direction of the external
electric conductor section. This has the advantage that a coupling of the electrical
connector in a mechanically preload-free manner is possible.
[0013] The longitudinal direction of the second electric pin is perpendicular to the longitudinal
axis of the supporting element. This has the advantage that a simple construction
of the electrical connector is possible.
[0014] In an advantageous embodiment of the invention the coupling between the second electric
pin and the external electric conductor section is a laser-welded coupling. This has
the advantage that laser-welding is a simple and secure coupling method. Additionally,
a high repeatability and stability of the coupling is obtainable. Furthermore, little
need for the inspection of the coupling area is necessary.
[0015] According to a second aspect the invention is distinguished by an actuator unit with
an electrical connector according to the first aspect of the invention and a piezo
actuator, wherein the piezo actuator is mechanically coupled to the second connector
element of the electrical connector and is designed as a cylinder with a axis extending
in direction of the longitudinal axis of the supporting element of the second connector
element. This has the advantage that mechanical stress of the coupling area of the
electric conductor of the first connector element and the second electric pin of the
second connector element due to vibrations of the piezo actuator can be prevented.
Furthermore, the coupling between the electric conductor and the second electric pin
can be carried out in a mechanical robust manner.
[0016] According to a third aspect the invention is distinguished by an injector comprising
the actuator unit of the second aspect of the invention, with the actuator unit being
designed for acting on the valve assembly.
[0017] According to a fourth aspect the invention is distinguished by a method for coupling
a first connector element of an electrical connector for an injector to an second
connector element, the first connector element comprising a connector body, and an
electric conductor being mechanically coupled to the connector body, being designed
for an electrical coupling to a power supply and having an external electric conductor
section outside the connector body, the external electric conductor section extending
in a longitudinal direction, the second connector element comprising a supporting
element being designed as a cylinder with a longitudinal axis, a first electric pin
being rigidly coupled to the supporting element and being designed for an electrical
coupling to the actuator unit of the injector, and a second electric pin being rigidly
coupled to the supporting element and electrically coupled to the first electric pin,
the method comprising the following steps: providing the first connector element and
the second connector element, aligning the external electric conductor section of
the first connector element relative to the second electric pin of the second connector
element to obtain a defined position of the first connector element relative to the
second connector element, so that the external electric conductor section of the first
connector element and the second electric pin of the second connector element are
mechanically coupled in a tension-free manner, rigidly coupling the extern electric
conductor section of the first connector element to the second electric pin of the
second connector element to provide an electric coupling between the first connector
element and the second connector element.
[0018] Exemplary embodiments of the invention are explained in the following with the help
of schematic drawings. These are as follows:
- Figure 1,
- an injector in a longitudinal section view,
- Figure 2,
- parts of an electrical connector and parts of an actuator unit for the injector according
to figure 1 in a longitudinal section view, and
- Figure 3,
- the electrical connector for the injector according to figure 1 in a schematic perspective
view.
[0019] Elements of the same design and function that appear in different illustrations are
identified by the same reference characters.
[0020] An injector 10 (figure 1) that is used as a fuel injector for an internal combustion
engine, comprises an actuator unit 14 and a valve assembly 60.
[0021] The injector 10 has a housing 12 with a tubular shape and a central longitudinal
axis A and a cavity 24 which is axially led through the housing 12. The actuator unit
14 is inserted into the cavity 24 of the housing 12 and comprises a piezo actuator
16, which changes its axial length depending on a control signal applied to it. A
piezo actuator housing 17 encloses the piezo actuator 16 so that the piezo actuator
16 is stored in a mechanical robust manner.
[0022] The injector 10 has an electrical connector 50 (figure 2) which is electrically and
mechanically coupled to the piezo actuator 16 to supply the piezo actuator 16 with
electric energy.
[0023] The valve assembly 60 comprises a valve body 20 and a part of the cavity 24 which
is axially led through the valve body 20. The cavity 24 of the housing 12 comprises
a fluid inlet portion 26. The fluid inlet portion 26 is designed to be connected to
a high pressure fuel chamber of an internal combustion engine, the fuel is stored
under high pressure, for example, under the pressure of above 200 bar. On one of the
free ends of the cavity 24, a fluid outlet portion 28 is formed which is closed or
open depending on the axial position of a valve needle 22.
[0024] The valve body 20 has a valve body spring rest 32 and the valve needle 22 comprises
a valve needle spring rest 34, both spring rests 32, 34 supporting a spring 30 arranged
between the valve body 20 and the valve needle 22.
[0025] The injector 10 is of an outward opening type. In an alternative embodiment of the
injector 10 it may be of an inward opening type. Between the valve needle 22 and the
valve body 20 a bellow 36 is arranged which is sealingly coupling the valve body 20
with the valve needle 22. By this a fluid flow between the cavity 24 and a chamber
38 is prevented. Furthermore, the bellow 36 is formed and arranged in a way that the
valve needle 22 is actuable by the actuator unit 14.
[0026] Figure 2 shows a detailed view of the electrical connector 50. The piezo actuator
housing 17 enclosing the piezo actuator 16 comprises a top cap 42. The top cap 42
of the piezo actuator housing 17 is arranged at an end of the piezo actuator 16 facing
away from the valve assembly 60. The actuator unit 14 further comprises a piston 46.
A thermal compensator unit 40 is arranged in the cavity 24 of the housing 12 and is
mechanically coupled to the piston 46 of the piezo actuator 16. The thermal compensation
unit 40 enables to set an axial preload force on the actuator unit 14 via the piston
46 to compensate changes of the fluid flow through the fluid outlet portion 28 in
the case of temperature changes of the injector 10.
[0027] The piezo actuator 16 further comprises electric pins 41 to supply the piezo actuator
16 with electric energy. The piezo actuator 16 changes its length in axial direction
depending on electric energy supplied to it. By changing its length the piezo actuator
16 can exert a force to the valve needle 22. The force from the piezo actuator 16
being exerted to the valve needle 22 in an axial direction allows or prevents a fluid
flow through the fluid outlet portion 28.
[0028] The electrical connector 50 of the injector 10 further comprises a first connector
element 43 with a non-conductive connector body 44 in which an electric conductor
45 is arranged. Outside the connector body 44 the electric conductor 45 has an extern
electric conductor section 45a extending in a longitudinal direction D. Electric energy
can be supplied to the electric conductor 45 of the first connector element 43 by
a not shown power supply.
[0029] The electrical connector 50 of the injector 10 further comprises a second connector
element 47 consisting of a supporting element 48 and first electric pins 49a and second
electric pins 49b which are rigidly coupled to the supporting element 48. Preferably,
the supporting element 48 consists of plastic or another non-conductive material.
The extern electric conductor section 45a of the first connector element 43 is electrically
coupled to one of the second electric pins 49b of the second connector element 47
which is electrically coupled to one of the first electric pins 49a which on its part
is electrically coupled to one of the electric pin 41 of the piezo actuator 16. Consequently,
electric energy can be supplied to the piezo actuator 16 via the first connector element
43 and the second connector element 47 in a simple manner.
[0030] Figure 3 shows the electrical connector 50 with the first connector element 43 and
the second connector element 47 in a schematic perspective view. A plane P is extending
parallel to the longitudinal direction D of the extern electric conductor section
45a. The plane P is the plane in which the second electric pin 49b of the second connector
element 47 is arranged. A smallest angle between the plane P and the longitudinal
axis A of the supporting element 48 of the second connector element 47 is equal to
an angle ALPHA between the longitudinal direction D of the extern electric conductor
section 45a and the longitudinal axis A. Figure 3 shows two possible positions I and
II of the second electric pin 49b. For a good overview the first connector element
43 is shown in a distance from the second connector element 47 although in a more
realistic representation the first connector element 43 would be very near to the
second connector element 47 similar to figure 2.
[0031] As the smallest angle between the plane P and the longitudinal axis A of the supporting
element 48 of the second connector element 47 is equal to the angle ALPHA between
the longitudinal direction D of the extern electric conductor section 45a and the
longitudinal axis A and the second electric pin 49b is arranged in the plane P a mechanical
preload to a coupling area 52 of the electric conductor 45 of the first connector
element 43 with the second electric pin 49b of the second connector element 47 in
the longitudinal direction D of the extern electric conductor section 45a can be prevented.
The coupling between the electric conductor 45 and the second electric pin 49b can
be carried out in a mechanical robust manner.
[0032] In figure 2 a particular constellation of the angle ALPHA between the longitudinal
direction D of the extern electric conductor section 45a and the longitudinal axis
A is shown with the Angle ALPHA being equal 90°, and the second electric pin 49b extending
in the longitudinal direction D of the extern electric conductor section 45a. By this,
it is possible to obtain several coupling points between the extern electric conductor
section 45a of the first connector element 43 and the second electric pins 49b of
the second connector element 47.
[0033] In the following a method for coupling the extern electric conductor section 45a
to the second electric pin 49b of the injector 10 will be described:
[0034] The first connector element 43 and the second connector element 47 of the injector
10 are provided. The extern electric conductor section 45a of the first connector
element 43 is aligned relative to the second electric pin 49b of the second connector
element 47. By this a defined position of the first connector element 43 relative
to the second connector element 47 can be obtained, so that the extern electric conductor
section 45a of the first connector element 43 and the second electric pin 49b of the
second connector element 47 can be mechanically coupled in a manner free of mechanical
tensions. Finally, the extern electric conductor section 45a of the first connector
element 43 is coupled to the second electric pin 49b of the second connector element
47 to provide an electric coupling between the first connector element 43 and the
second connector element 47. Preferably, the coupling between the second electric
pin 49b and the extern electric conductor section 45a is carried out by laser-welding.
This is very advantageous as laser-welding is a simple and very secure coupling method
and the coupling can be carried out with a high repeatability and a good stability.
[0035] In the following, the function of the injector 10 will be described:
[0036] The fluid is led from the fluid inlet portion 26 through the housing 12 to the fluid
outlet portion 28.
[0037] The valve needle 22 prevents a fluid flow through the fluid outlet portion 28 in
the valve body 20 in a closing position of the valve needle 22. Outside of the closing
position of the valve needle 22, the valve needle 22 enables the fluid flow through
the fluid outlet portion 28.
[0038] The piezo actuator 16 may change its axial length if it is energized. By changing
its length the piezo actuator 16 may exert a force on the valve needle 22. The valve
needle 22 is able to move in axial direction out of the closing position. Outside
the closing position of the valve needle 22 there is a gap between the valve body
20 and the valve needle 22 at an axial end of the injector 10 facing away from the
piezo actuator 16. The spring 30 can force the valve needle 22 via the valve needle
spring rest 34 towards the piezo actuator 16. In the case the piezo actuator 17 is
de-energized the piezo actuator 16 shortens its length. The spring 30 can force the
valve needle 22 to move in axial direction in its closing position. It is depending
on the force balance between the force on the valve needle 22 caused by the piezo
actuator 16 and the force on the valve needle 22 caused by the spring 30 whether the
valve needle 22 is in its closing position or not.
1. Electrical connector (50) for an injector (10) comprising a first connector element
(43) and a second connector element (47),
the first connector element (43) comprising
- a connector body (44), and
- an electric conductor (45) being mechanically coupled to the connector body (44),
being designed for an electrical coupling to a power supply and having an external
electric conductor section (45a) extending in a longitudinal direction (D),
the second connector element (47) comprising
- a supporting element (48) being designed as a cylinder with a longitudinal axis
(A),
- a first electric pin (49a) being rigidly coupled to the supporting element (48)
and being designed for an electrical coupling to an actuator unit (14) of the injector
(10), and
- a second electric pin (49b) being rigidly coupled to the supporting element (48)
and electrically coupled to the first electric pin (49a), characterized in that
the second electric pin (49b) being electrically coupled to the external electric
conductor section (45a) of the first connector element (43) in a mechanically tension-free
manner and extending in a plane (P) being parallel to the longitudinal direction (D)
of the external electric conductor section (45a), wherein the second electric pin
(49b) is extending in the longitudinal direction (D) of the external electric conductor
section (45a), whereby the external electric conductor section (45a) is arranged outside
the connector body (44), and
in that the longitudinal direction (D) of the second electric pin (49b) is perpendicular
to the longitudinal axis (A) of the supporting element (48).
2. Electrical connector (50) according to claim 1, wherein the coupling between the second
electric pin (49b) and the external electric conductor section (45a) is a laser-welded
coupling.
3. Actuator unit (14) with an electrical connector (50) according to one of the preceding
claims and a piezo actuator (16), wherein the piezo actuator (16) is mechanically
coupled to the second connector element (47) of the electrical connector (50) and
is designed as a cylinder with a axis extending in direction of the longitudinal axis
(A) of the supporting element (48) of the second connector element (47).
4. Injector (10) with a valve assembly (60) and an actuator unit (14) according to claim
3, with the actuator unit (14) being designed for acting on the valve assembly (60).
5. Method for coupling a first connector element (43) to an second connector element
(47) of an electrical connector (50) for an injector (10),
the first connector element (43) comprising
- a connector body (44), and
- an electric conductor (45) being mechanically coupled to the connector body (44),
being designed for an electrical coupling to a power supply and having an external
electric conductor section (45a) outside the connector body (44), the external electric
conductor section (45a) extending in a longitudinal direction (D),
the second connector element (47) comprising
- a supporting element (48) being designed as a cylinder with a longitudinal axis
(A),
- a first electric pin (49a) being rigidly coupled to the supporting element (48)
and being designed for an electrical coupling to the actuator unit (14) of the injector
(10), and
- a second electric pin (49b) being rigidly coupled to the supporting element (48)
and electrically coupled to the first electric pin (49a), whereby the longitudinal
direction (D) of the second electric pin (49b) is perpendicular to the longitudinal
axis (A) of the supporting element (48),
the method comprising the following steps:
- providing the first connector element (43) and the second connector element (47),
- aligning the external electric conductor section (45a) of the first connector element
(43) relative to the second electric pin (49b) of the second connector element (47)
to obtain a defined position of the first connector element (43) relative to the second
connector element (47), so that the external electric conductor section (45a) of the
first connector element (43) and the second electric pin (49b) of the second connector
element (47) are mechanically coupled in a tension-free manner,
- rigidly coupling the external electric conductor section (45a) of the first connector
element (43) to the second electric pin (49b) of the second connector element (47)
to provide an electric coupling between the first connector element (43) and the second
connector element (47).
1. Elektrischer Verbinder (50) für einen Injektor (10), umfassend ein erstes Verbinderelement
(43) und ein zweites Verbinderelement (47), während
das erste Verbinderelement (43) umfasst:
einen Verbinderkörper (44) und
einen elektrischen Leiter (45), der mechanisch an den Verbinderkörper (44) gekoppelt
ist, für ein elektrisches Koppeln an eine Stromversorgung gestaltet ist und einen
äußeren elektrischen Leiterabschnitt (45a) aufweist, der sich in einer Längsrichtung
(D) erstreckt, während das zweite Verbinderelement (47) umfasst:
ein Unterstützungselement (48), das als ein Zylinder mit einer Längsachse (A) gestaltet
ist,
einen ersten elektrischen Stift (49a), der starr an das Unterstützungselement (48)
gekoppelt ist und für ein elektrisches Koppeln an eine Aktuatoreinheit (14) des Injektors
(10) gestaltet ist, und
einen zweiten elektrischen Stift (49b), der starr an das Unterstützungselement (48)
gekoppelt ist und elektrisch an den ersten elektrischen Stift (49a) gekoppelt ist,
dadurch gekennzeichnet, dass
der zweite elektrische Stift (49b) elektrisch an den äußeren elektrischen Leiterabschnitt
(45a) des ersten Verbindungselements (48) in einer mechanisch spannungsfreien Weise
gekoppelt ist und sich in einer Ebene (P) erstreckt, die parallel zu der Längsrichtung
(D) des äußeren elektrischen Leiterabschnitts (45a) ist, während der zweite elektrische
Stift (49b) sich in der Längsrichtung (D) des äußeren elektrischen Leiterabschnitts
(45a) erstreckt, wodurch der äußere elektrische Leiterabschnitt (45a) außerhalb des
Verbinderkörpers (44) angeordnet ist, sowie dadurch, dass die Längsrichtung (D) des
zweiten elektrischen Stifts (49b) rechtwinklig zu der Längsachse (A) des Unterstützungselements
(48) ist.
2. Elektrischer Verbinder (50) gemäß Anspruch 1, während das Koppeln zwischen dem zweiten
elektrischen Stift (49b) und dem äußeren elektrischen Leiterabschnitt (45a) ein lasergeschweißtes
Koppeln ist.
3. Aktuatoreinheit (14) mit einem elektrischen Verbinder (50) gemäß einem der vorhergehenden
Ansprüche sowie einem Piezoaktuator (16), während der Piezoaktuator (16) mechanisch
an das zweite Verbinderelement (47) des elektrischen Verbinders (50) gekoppelt ist
und als ein Zylinder mit einer Achse gestaltet ist, die sich in Richtung der Längsachse
(A) des Unterstützungselements (48) des zweiten Verbinderelements (47) erstreckt.
4. Injektor (10) mit einer Ventilanordnung (60) und einer Aktuatoreinheit (14) gemäß
Anspruch 3, während die Aktuatoreinheit (14) zum Wirken auf die Ventilanordnung (60)
gestaltet ist.
5. Verfahren zum Koppeln eines ersten Verbinderelements (43) an ein zweites Verbinderelement
(47) eines elektrischen Verbinders (50) für einen Injektor (10), während das erste
Verbinderelement (43) umfasst:
einen Verbinderkörper (44) und
einen elektrischen Leiter (45), der mechanisch an den Verbinderkörper (44) gekoppelt
ist, für ein elektrisches Koppeln an eine Stromversorgung gestaltet ist und einen
äußeren elektrischen Leiterabschnitt (45a) außerhalb des Verbinderkörpers (44) aufweist,
wobei sich der äußere elektrische Leiterabschnitt (45a) in einer Längsrichtung (D)
erstreckt, während
das zweite Verbinderelement (47) umfasst:
ein Unterstützungselement (48), das als ein Zylinder mit einer Längsachse (A) gestaltet
ist,
einen ersten elektrischen Stift (49a), der starr an das Unterstützungselement (48)
gekoppelt ist und für ein elektrisches Koppeln an die Aktuatoreinheit (14) des Injektors
(10) gestaltet ist, und
einen zweiten elektrischen Stift (49b), der starr an das Unterstützungselement (48)
gekoppelt ist und elektrisch an den ersten elektrischen Stift (49a) gekoppelt ist,
während die Längsrichtung (D) des zweiten elektrischen Stifts (49b) rechtwinklig zu
der Längsachse (A) des Unterstützungselements (48) ist, wobei
das Verfahren die folgenden Schritte umfasst:
Bereitstellen des ersten Verbinderelements (43) sowie des zweiten Verbinderelements
(47),
Ausrichten des äußeren elektrischen Leiterabschnitts (45a) des ersten Verbinderelements
(43) in Bezug auf den zweiten elektrischen Stift (49b) des zweiten Verbinderelements
(47), um eine definierte Position des ersten Verbinderelements (43) in Bezug auf das
zweite Verbinderelement (47) zu erhalten, so dass der äußere elektrische Leiterabschnitt
(45a) des ersten Verbinderelements (43) und der zweite elektrische Stift (49b) des
zweiten Verbinderelements (47) mechanisch in einer spannungsfreien Weise gekoppelt
sind, und starres Koppeln des äußeren elektrischen Leiterabschnitts (45a) des ersten
Verbinderelements (43) an den zweiten elektrischen Stift (49b) des zweiten Verbinderelements
(47), um ein elektrisches Koppeln zwischen dem ersten Verbinderelement (43) und dem
zweiten Verbinderelement (47) bereitzustellen.
1. Connecteur électrique (50) pour un injecteur (10) comprenant un premier élément connecteur
(43) et un second élément connecteur (47),
le premier élément connecteur (43) comprenant
- un corps de connecteur (44), et
- un conducteur électrique (45) étant couplé mécaniquement au corps de connecteur
(44), étant conçu pour un couplage électrique à une source d'alimentation et ayant
une section de conducteur électrique externe (45a) s'étendant dans une direction longitudinale
(D),
le second élément connecteur (47) comprenant
- un élément de support (48) ayant la forme d'un cylindre avec un axe longitudinal
(A),
- une première broche électrique (49a) étant couplée de façon rigide à l'élément de
support (48) et étant conçue pour un couplage électrique à une unité d'actionneur
(14) de l'injecteur (10), et
- une seconde broche électrique (49b) étant couplée de façon rigide à l'élément de
support (48) et couplée électriquement à la première broche électrique (49a),
caractérisé en ce que
la seconde broche électrique (49b) est couplée électriquement à la section de conducteur
électrique externe (45a) du premier élément connecteur (43) de manière mécanique sans
tension et s'étend dans un plan (P) parallèle à la direction longitudinale (D) de
la section de conducteur électrique externe (45a), la seconde broche électrique (49b)
s'étendant dans la direction longitudinale (D) de la section de conducteur électrique
externe (45a), moyennant quoi la section de conducteur électrique externe (45a) est
agencée à l'extérieur du corps de connecteur (44), et
en ce que la direction longitudinale (D) de la seconde broche électrique (49b) est perpendiculaire
à l'axe longitudinal (A) de l'élément de support (48).
2. Connecteur électrique (50) selon la revendication 1, dans lequel le couplage entre
la seconde broche électrique (49b) et la section de conducteur électrique externe
(45a) est un couplage soudé au laser.
3. Unité d'actionneur (14) comprenant un connecteur électrique (50) selon l'une des revendications
précédentes et un actionneur piézoélectrique (16), dans laquelle l'actionneur piézoélectrique
(16) est couplé mécaniquement au second élément connecteur (47) du connecteur électrique
(50) et se présente sous la forme d'un cylindre avec un axe s'étendant en direction
de l'axe longitudinal (A) de l'élément de support (48) du second élément connecteur
(47).
4. Injecteur (10) comprenant un ensemble de soupape (60) et une unité d'actionneur (14)
selon la revendication 3, l'unité d'actionneur (14) étant conçue pour agir sur l'ensemble
de soupape (60).
5. Procédé de couplage d'un premier élément connecteur (43) à un second élément connecteur
(47) d'un connecteur électrique (50) pour un injecteur (10),
le premier élément connecteur (43) comprenant
- un corps de connecteur (44) et
- un conducteur électrique (45) étant couplé mécaniquement au corps de connecteur
(44), étant conçu pour un couplage électrique à une source d'alimentation et ayant
une section de conducteur électrique externe (45a) à l'extérieur du corps de connecteur
(44), la section de conducteur électrique externe (45a) s'étendant dans une direction
longitudinale (D),
le second élément connecteur (47) comprenant
- un élément de support (48) se présentant sous la forme d'un cylindre avec un axe
longitudinal (A),
- une première broche électrique (49a) étant couplée de façon rigide à l'élément de
support (48) et étant conçue pour un couplage électrique à l'unité d'actionneur (14)
de l'injecteur (10), et
- une seconde broche électrique (49b) étant couplée de façon rigide à l'élément de
support (48) et couplée électriquement à la première broche électrique (49a), moyennant
quoi la direction longitudinale (D) de la seconde broche électrique (49b) est perpendiculaire
à l'axe longitudinal (A) de l'élément de support (48),
le procédé comprenant les étapes consistant à :
- prévoir le premier élément connecteur (43) et le second élément connecteur (47),
- aligner la section de conducteur électrique externe (45a) du premier élément connecteur
(43) par rapport à la seconde broche électrique (49b) du second élément connecteur
(47) pour obtenir une position définie du premier élément connecteur (43) par rapport
au second élément connecteur (47), de telle sorte que la section de conducteur électrique
externe (45a) du premier élément connecteur (43) et la seconde broche électrique (49b)
du second élément connecteur (47) soient couplées mécaniquement sans tension,
- coupler de manière rigide la section de conducteur électrique externe (45a) du premier
élément connecteur (43) à la seconde broche électrique (49b) du second élément connecteur
(47) pour permettre un couplage électrique entre le premier élément connecteur (43)
et le second élément connecteur (47).