DE102016223519A1 - Starting device and method for starting an internal combustion engine - Google Patents

Abstract

The invention relates to a starting device for starting an internal combustion engine (60) comprising: a pivotable shaft (24), wherein the pivotable shaft (24) is pivotable about an axis (26, 62, 70) via a pivoting arm (40), at least one the pivotable shaft (24) arranged Einspurritzel (30, 32) for engaging in at least one ring gear (16, 34) of a dual mass flywheel (20) for starting the internal combustion engine (60), a control lever (42), wherein the adjusting lever (42) an actuator and with the pivot arm (40) is connected for transmitting a movement of the actuator on the pivot arm (40) for pivoting the Einspurritzels (30, 32) in the sprocket (16, 34), wherein the adjusting lever (42) and the pivot arm (40) are connected to the axle (26, 62, 70). In this way, the starting of an internal combustion engine (60) can be further simplified and / or improved.

Description

The invention relates to a starting device for starting an internal combustion engine with at least one Einpurritzel for engaging in at least one ring gear of a dual mass flywheel. The invention further relates to a method for starting an internal combustion engine with such a starting device.

From the German patent application DE 197 29 421 A1 a flywheel assembly having a first flywheel and a second flywheel is known, wherein at a certain relative rotation between the first and the second flywheel, a lever mechanism on a part of the second flywheel so engages that a further rotation between the first and the second flywheel is prevented , From the German patent application DE 10 2011 117 395 A1 is known a dual-mass flywheel with a multi-part primary flywheel comprising a connectable to a starter first disc and a second disc wheel, wherein between the first disc and the second disc wheel, a locking mechanism is arranged, which at a threshold speed of an open state without adhesion between the first Disc wheel and the second disc wheel in a locked state with adhesion between the first disc wheel and the second disc wheel changes. From the German patent application DE 10 2010 012 514 A1 a device for starting an internal combustion engine by means of a preferably electric starter motor is known, the pinion with a flange arranged on a ring gear is constantly in engagement, provided between a hub of the Flanschrades and a power output shaft of the internal combustion engine only in the drive direction of the starter motor torque transmitting freewheel is, wherein the flange is arranged with the freewheel between at least one output flange on the power output shaft and a drive element connected to the driven flange coupling element of a downstream speed change gear.

The object of the invention is to further simplify and / or to improve the starting of an internal combustion engine.

The object is achieved by a starting device with the features of claim 1. Preferred embodiments of the invention are set forth in the dependent claims, which may each individually or in combination constitute an aspect of the invention.

The invention relates to a starting device for starting an internal combustion engine comprising a pivotable shaft, wherein the pivotable shaft is pivotable about an axis about a pivot arm, at least one arranged on the pivotable shaft Einspurritzel for engaging in at least one ring gear of a dual mass flywheel for starting the internal combustion engine, a lever wherein the adjusting lever is connected to an actuator and to the pivoting arm for transmitting a movement of the actuator on the pivoting arm for pivoting the Einspurritzels in the sprocket, wherein the adjusting lever and the pivoting arm are connected to the axis.

With the aid of the pivotable shaft, the at least one meshing pinion can be pivoted radially into the at least one toothed rim of the dual-mass flywheel when initiating a starting operation of the internal combustion engine as a result of the pivoting movement of the pivotable shaft.

The starting device can be connected via an axis with a starter, in particular an electric motor, or be designed as a stand-alone solution. In a stand-alone solution, the starting device can be considered only the Einschwenkvorrichtung as a standalone assembly comprising an actuator, a lever, a pivot arm, a pivotable shaft, an axle and at least one Einpurritzel. A stand-alone version of the starting device may be necessary if the internal combustion engine is driven during the starting process, for example via a Riemenstartgenerator. Furthermore, such an embodiment may be necessary if a starter according to the prior art is used, but for reasons of space, the starting device must be mounted offset in the circumferential direction.

The axis may be, for example, a motor axis, wherein the motor axis is connected to a starter, a housing fixed arranged bolt or a pivot axis. Furthermore, the axle can connect the adjusting lever and the swivel arm with one another, so that the at least one single-pinion gear can be moved pivotably about the axis. Furthermore, the axis may be fixedly connected to the adjusting lever and at the same time rotatably mounted in a housing.

The actuator can be a magnetic switch.

When starting an internal combustion engine, first the pivoting lever can be actuated via the actuator in order to pivot the pivotable shaft about the at least one meshing pinion in the at least one ring gear of the dual mass flywheel. After that you can a starter, such as an electric motor or a belt starter generator to be powered to accelerate the dual mass flywheel. At first, the primary side of the dual-mass flywheel can be accelerated. If it can come to the first ignition of the internal combustion engine, the primary side can be further accelerated, the secondary side can be accelerated via the bow spring. In a subsequent ignition during the engine start, the primary side again ahead of the secondary side, whereby the bias of the bow spring can be further increased.

During a starting process, the primary side and the secondary side, for example, by 150 Nm have been braced against each other. For example, with a tooth circle diameter of 300 mm and a pressure angle of, for example, 20 °, a tooth edge normal force of 1064N may be present. With a coefficient of friction steel / steel (dry) of μ = 0.5, a friction force of 532 N can be present.

Due to the radially einschwenkende arrangement of the starting device, a radially repellent force may be present due to the meshing angle, which may be directed opposite to the frictional force and thereby compensated. Furthermore, an immediate radial pivoting of the pivotable shaft of the sprocket can be made at any time with the least effort.

By means of a radially pivoting starting device, substantially larger gaps can be made available for the tooth gap finding than in the axial meshing according to the prior art. This can be particularly important in the case of a "change of mind" start, which can occur more frequently, especially in vehicles with start-stop systems. A "change of mind" may be present when the internal combustion engine is switched off during a standstill phase, for example a red traffic light, and while the engine is running out the restarting process is restarted because the traffic light has just switched to green. It should be meshed in the still rotating sprockets of the torsion damper. The larger gaps for tooth finding or synchronization during radial pivoting can thus allow greater relative speeds between sprocket and Einspurritzel.

In particular, compared to an axially meshing starter with straight teeth according to the prior art, the teeth are designed as helical teeth, resulting in much quieter Verzahnungskämmen.

In this way, the starting of an internal combustion engine can be further simplified and / or improved by means of the starting device.

In a preferred embodiment, a first Einspurritzel for contacting a primary side sprocket on a primary side of the dual mass flywheel and a second Einspurritzel for contacting a secondary side sprocket on a secondary side of the dual mass flywheel is arranged on the pivotable shaft. In this way, both the primary side and the secondary side of the dual mass flywheel can be accelerated during the starting process.

Preferably, the first Einpurritzel and the second Einpurritzel are rigidly coupled to the pivotable shaft, via a freewheel, via a friction device or via a spring element. In the case of a rigid coupling of the two pinion pinions, the toothings for transmitting the ignition torques to the secondary side must be made substantially more massive. When connected via a freewheel, the first pinion gear can overspeed the second pinion gear during the starting process, but the second pinion gear can accelerate the first pinion gear. For example, when energizing a starter, the primary side may first be accelerated. In this case, the freewheel slip through, so that the primary side via the bow spring of the damper phase-shifted can accelerate the secondary side. Upon ignition of the internal combustion engine, the primary side can be further accelerated. In this case, the freewheel can slip through again, so that the secondary side can only be accelerated via the bow spring. In this case, the bow spring of the dual mass flywheel can be compressed and remain biased that the freewheel locks. With the help of the freewheel can thus be avoided that the teeth must transmit the high ignition torques, whereby a construction of the starting device can be simplified. In the case of a friction device, the second single-pinion gear can be coupled to the first single-pinion gear via a defined friction torque. The friction torque of the friction device can advantageously be above 1 Nm, more preferably above 3 Nm, in particular above 4 Nm. Furthermore, the friction device can identify a clearance angle range within which the friction device generates no or only a very small friction torque. With the help of a spring element both Einpurritzel torsionally soft can be coupled together.

In a preferred embodiment, the pivot arm and the adjusting lever are formed as a component. In this way, the starting device can be simplified.

Preferably, the actuator comprises a pull rod for transmitting a movement of the actuator to the adjusting lever, wherein on the pull rod a fixed slide stop and a sliding carriage is arranged, wherein the adjusting lever between the carriage stop and the carriage is arranged to transmit a movement of the actuator. For example, in an embodiment variant which provides for the adjusting lever and the swivel arm to be combined to form a component, a slide displaceable on the pull rod of the actuator, in particular a magnetic actuator, can be arranged on the pull rod. This carriage can be pressed by a preferably biased elastic element, in particular a spring element, against a slide stop arranged opposite the carriage, wherein the carriage stop is firmly connected to the drawbar. With the help of the carriage, preferably the additional elastic element, the function of a quick residual pivoting can be made possible in case when starting the starting process, the teeth of the pinion not immediately in the tooth gaps of the ring gear and instead head-to-head to rest come. The presented here embodiment of lever and swivel arm to a component with slide can be applied to all variants of the starting device with the exception of the "stand-alone solution", which uses an additional synchronizing pinion

It is preferred that the swivel arm and the adjusting lever are coupled together via a spring element, in particular via a leg spring or via a compression spring, in particular a Einspurfeder. The spring element can preferably be subjected to pressure. In this way, a quick and easy reset of the starting device after starting the engine can be made possible in a starting position.

In particular, the axle can be connected to a starter. The starter may in particular be an electric motor. With the help of the starter, the axle torque can be transmitted to the pivoting shaft to start the engine.

Preferably, a pinion is arranged on the axis, wherein the pinion contacts a Einspurritzel. By means of an additional pinion on the axle, torque can be transmitted from the axle to at least one single-pinion gear of the pivotable shaft. In particular, the torque of the starter can be transmitted to the sprocket via the Einpurritzel. The pinion can always mesh the Einpurritzel and thus drive the pivoting shaft.

In a preferred embodiment, a freewheel is arranged on the axle. With the help of the freewheel on the axle, the axle via a pinion and the Einspurritzel the primary side of the sprocket of the dual mass flywheel accelerate, but the ring gear can overtake the speed of the axle.

Preferably, the first Einpurritzel and the second Einspurritzel each have the same or different top circle diameter for engagement in the primary-side sprocket and the secondary-side sprocket with the same or different top circle diameters. With the same tip diameter, a same ratio in the gear pairs, each consisting of Einspurritzel and ring gear, are possible. Furthermore, it may be advantageous for better tooth gap finding when meshing when the Einspurritzel and / or the sprockets have different tip diameter. For example, the first Einpurritzel may have a larger tip circle than the second Einpurritzel, so that thereby also find the primary-side gear pair, consisting of first Einpurritzel and primary-side ring gear, the Einspurvorgang first.

The invention further relates to a method for starting an internal combustion engine with a starter device, which may be formed or developed as described above, comprising the following steps: pivoting the at least one Einspurritzels in the at least one ring gear of the dual mass flywheel from a starting position; Igniting the internal combustion engine with a starter or a belt starter generator; Reaching the idle speed of the internal combustion engine; and swinging the starting device in the starting position.

By the method, the starting of an internal combustion engine can be further simplified and / or improved.

The invention will now be described by way of example with reference to the accompanying drawings with reference to preferred embodiments, wherein the features shown below, both individually and in combination may represent an aspect of the invention. Show it:

1 a schematic drawing of a starting device according to the prior art;

2 a schematic drawing of a first embodiment of a starting device;

3 a section of a sectional view of a starting device of 2 ;

4 a section of a detailed view of the starting device of 2 in a starting position;

5 to 9 a section of a detailed view of the starting device of 4 during an operation;

10 a schematic view of a second embodiment of a starting device;

11 a schematic view of a third embodiment of a starting device;

12 a section of a sectional view of a starting device according to 10 or 11 ;

13 a detail of a detail view of a first embodiment of the starting device of 12 in a starting position;

14 to 17 a section of a detailed view of the starting device of 13 during an operation;

18 and 19 a detail of a detail view with various embodiments of the arrangement of the axes in a starting device according to the 12 ;

20 a detail of a detail view of a second embodiment of the starting device of 12 in a starting position;

21 to 24 a section of a detailed view of the starting device of 20 during an operation;

25 a section of a sectional view of a third embodiment of a starting device;

26 a section of a detailed view of the starting device of 25 in a starting position;

27 to 32 a section of a detailed view of the starting device of 25 during an operation;

33 a detail of a sectional view of a fourth embodiment of a starting device;

34 a section of a detailed view of the starting device of 33 during an operation;

35 a detail of a detail view of another embodiment of a starting device in a starting position;

36 to 38 a section of a detailed view of the starting device of 35 during an operation;

39 a detail of a detail view of another embodiment of a starting device in a starting position; and

40 to 43 a section of a detailed view of the starting device of 39 during an operation.

In the following description of the figures, the same reference numeral is used for the same component / term.

1 shows a schematic representation of a starting device 10 according to the prior art. All components of the starter 10 are surrounded by a dashed box. The starting device comprises an axially meshing starter. The starter includes a starter 12 the one with a motor axis 26 connected is. On the engine axle 26 is a starter pinion 12 arranged. When the engine starts, the starter pinion 12 axially in a sprocket 16 meshed. The sprocket 16 is on the primary side 18 a dual mass flywheel 20 appropriate. All components of the dual-mass flywheel 20 are surrounded by a dashed box.

In 2 is a schematic representation of a first embodiment of a starting device 22 represented according to the invention. This is the starting device 22 a starter 12 before, the one over a freewheel 24 coupled starter pinion 14 on the motor axis 26 has. Furthermore, the starting device 22 an additional swivel shaft 28 on, on which a first Einpurritzel 30 and a second meshing pinion 32 are attached. The swiveling shaft 28 is about the motor axis 26 of the starter 12 pivotally mounted. The starter pinion 14 on the motor axis 26 always comes with the first Einpurritzel 30 and thus drives the pivotable shaft 28 at. The first single sprocket 30 engages in the primary side mounted sprocket 16 of the dual mass flywheel 20 one. The second single sprocket 32 engages in an additionally mounted on the secondary side sprocket 34 one. The two on the pivoting shaft 28 attached Einpurritzel 30 . 32 are over a second freewheel 36 coupled together.

3 shows a detail view of a sectional view of a star device 22 on a dual mass flywheel 20 , The swivel arm 40 and the lever 42 are represented here simplified as a component. The starting device 22 includes next to the swivel arm 40 and the lever 42 a starter 12 in the form of an electric motor with a planetary gear set, one with the starter 12 connected motor axis 26 , one on the motor axle 26 arranged freewheel 24 , A arranged on the motor axis starter pinion 14 , one with the lever 42 connected magnetic switch 44 , one with the swivel arm 40 connected parallel to the motor axis 26 running over the starter pinion 14 connected pivoting shaft 28 , On the swivel shaft 28 are a first Einpurritzel 30 and a second meshing pinion 32 over a second freewheel 36 connected with each other. The first single sprocket 32 is engaged with the starter pinion 14 and with the primary-side sprocket 16 of the dual mass flywheel 20 , The dual mass flywheel 20 has a primary page 18 and a secondary side 46 on. The second single sprocket 32 is engaged with the secondary side ring gear 34 ,

The freewheel 24 is designed in such a way that the starter 12 over the starter pinion 14 and the first meshing pinion 30 the primary side 18 can accelerate, but the primary side 18 or the starter pinion 14 the rotational speed of the starter 12 overtake.

The second freewheel 36 is configured such that the first Einpurritzel 30 the rotational speed of the second Einspurritzels 32 can overtake, however, the second Einpurritzel 32 the first single sprocket 30 accelerate.

4 represents a section of a detail view of the starting device 22 in a starting position. The lever 42 and the swivel arm 40 are over a preloaded leg spring 48 coupled together. All end views are shown without freewheel. The first single sprocket 30 and the second meshing pinion 32 , as well as the primary side sprocket 16 and the secondary-side sprocket 34 lie congruent one behind the other. For this reason are in the 4 only the first single pinion 30 and the primary-side sprocket 16 shown. Subsequently, only the Einschwenkvorgang of the first Einspurritzels 30 with the primary-side sprocket 16 described. A swinging in of the second Einspurritzels 32 with the primary-side sprocket 34 takes place analogously.

In the 5 to 9 the starting process is shown in detail using the starting device.

5 shows how the magnetic switch 44 is energized. This pulls the magnetic switch 44 on the lever 42 , which makes the first Einpurritzel 30 until striking the sprocket teeth of the primary-side sprocket 16 is pivoted. The starter 12 is still energized, so the starter pinion 14 at the moment it is still to be regarded as rigid.

Due to the pivoting movement of the swivel arm 40 around the starter pinion 14 , leads the first Einpurritzel 30 , due to Verzahnungsabwälzen, an additional self-rotation of. This will be done with the help of the arrow 50 shown.

In 6 pulls the magnetic switch 44 the adjusting lever 42 continue, tensing the leg spring 48 further ahead.

Now the starter 12 energized and begins to turn. It drives the starter pinion 14 the first single sprocket 30 until this is the next tooth gap in the primary side ring gear 16 finds and the Einschwenkvorgang can be continued.

7 represents how during the further Einschwenkvorganges the starter is still building its speed. Due to the pivoting movement leads the first Einpurritzel 30 again a self-rotation 52 out, this being the direction of rotation 54 by the starter 12 is opposite. The superimposed inherent and the drive rotation therefore cancel each other during pivoting at least partially.

In 8th is shown as after reaching the end stop 38 on the housing 50 and thus lacking opposite self-rotation 52 the first Einspurritzels 30 the primary-side sprocket 16 and thereby the internal combustion engine, not shown, is driven.

9 shows how the current flow of the starting device 22 is interrupted after the internal combustion engine is safely started. The return spring 56 ensures a fast swinging.

In 10 and 11 For example, the starting device is shown as a stand-alone solution, with only the retracting device being considered as a standalone assembly.

This embodiment may be necessary when the internal combustion engine 60 during the start process via a belt starter generator 58 is driven, as in 10 shown.

Also, this embodiment may be necessary, although a starting device 10 is used according to the prior art, however, for reasons of space, the Einschwenkvorrichtung must be mounted offset in the circumferential direction, this is in 11 shown.

In 10 it can be seen that the swiveling shaft 28 with the help of the swivel arm 40 with a housing-fixed pivot axis 62 connected is. The swivel arm 40 is with the magnetic switch 44 connected. The swiveling shaft 28 is about the first one meshing pinion 30 and the second meshing pinion 32 with the dual mass flywheel 20 connected.

The second freewheel 36 is configured such that the first Einpurritzel 30 the rotational speed of the second Einspurritzels 32 can overtake, however, the second Einpurritzel 32 the first single sprocket 30 accelerate.

In contrast to 10 is in 11 the internal combustion engine 60 instead of a belt starter generator 58 with the help of a starting device 10 is driven according to the prior art.

The swiveling shaft 28 is with the help of the swivel arm 40 with a housing-fixed pivot axis 62 connected. The swivel arm 40 is with the magnetic switch 44 connected. The swiveling shaft 28 is about the first single pinion 30 and the second meshing pinion 32 with the dual mass flywheel 20 connected.

The second freewheel 36 is configured such that the first Einpurritzel 30 the rotational speed of the second Einspurritzels 32 can overtake, however, the second Einpurritzel 32 the first single sprocket 30 accelerate.

12 shows a section of a sectional view of a pivot shaft unit without electric motor, for example, when for the start of the internal combustion engine 60 a belt starter generator is used. The in the 12 shown embodiment includes a second freewheel 36 , A version without freewheel would also be possible. The swivel arm 40 and the lever 42 are shown here for simplicity as a component. A real implementation provides that lever 42 and swivel arm 40 are separate components which are coupled via a biased spring element not shown with each other.

The second freewheel 36 is formed such that the first Einpurritzel 30 the second Einpurritzel 32 can overtake in terms of speed, however, the second Einpurritzel 32 the first single sprocket 30 accelerate.

In 13 is the starting device of the 12 shown in a starting position. The necessary freewheel not shown. The lever 42 and swivel arm 40 are separate components that over the Einspurfeder 64 are coupled with each other. The Einspurfeder 64 is necessary to allow a quick engagement in the tooth gap. Furthermore, the swivel arm 40 and the adjusting lever via a bolt rigidly connected to the housing 70 connected to which of the levers 42 and the swivel arm 40 can swing. The swivel arm 40 and the lever 42 contact at the stop 66 around the Einspurfeder 64 to install biased.

14 shows how the magnetic switch 44 is energized. This pulls the magnetic switch 44 on the lever 42 , The first single sprocket lands 30 tooth lands on tooth with the primary side gear rim 16 and therefore do not spurt. The first single sprocket 30 comes in contact with the housing-fixed end stop 68 , This will cause a further movement of the first single-toothed pinion 30 towards the right of the magnetic switch 44 prevented.

In 15 moves the magnetic switch 44 continue until his stop. The Einspurfeder 64 is biased further. This will be the contact of the control lever 42 and the swivel arm 40 at the stop 66 solved.

16 shows how the acceleration of the primary-side gear rim 16 by the starter, not shown, for example, a belt starter generator. This happens because the starter is energized and thereby accelerates the primary side. At the next tooth gap provides the preloaded Einspurfeder 64 for a quick "rest" swiveling in of the swivel arm 40 in the primary-side sprocket 16 ,

In 17 is shown that after ignition of the internal combustion engine, the internal combustion engine reaches the idle speed. After passing through the resonance speed of the dual-mass flywheel, the current flow becomes a magnetic switch 44 interrupted. The return spring 56 pivots the first pinion gear 30 again from the primary-side sprocket 16 out.

In 18 a first arrangement of the center axes of the components of the starting device to each other is shown. From the illustration it will be seen that bearing pin 70 , Single sprocket 30 and sprocket 16 are angled in the pivoted state to each other. Depending on the direction of rotation of the sprocket 16 as well as tension between the primary side and the secondary side of the dual-mass flywheel, there is an unwanted swinging out of the Einspurritzels forces 16 can effect.

19 shows an ideal arrangement of the center axes. Ideally, the arrangement should be chosen so that the center axes of the sprockets 16 . 34 , as well as the Einspurritzel 30 . 32 and the bearing bolt 70 in the pivoted state lie as possible in one plane. This applies both to the embodiment of the 10 with belt starter generator and for the embodiment of 11 with starter. As a result, radially acting toothing forces have no or only a very small lever arm to swing out.

In 20 is an embodiment of a starting device according to the 19 shown in a starting position. Here are the lever 42 and the swivel arm 40 over the preloaded leg spring 48 coupled.

21 shows how the magnetic switch 44 is energized. This pulls the magnetic switch 44 on the lever 42 , which makes the first Einpurritzel 30 until striking the sprocket teeth of the primary-side sprocket 16 is pivoted.

In 22 is shown as the magnetic switch 44 move the lever further. and while the leg spring 48 further biased. Furthermore, the separately installed starter or belt starter generator, not shown, is supplied with power.

23 shows how the primary side sprocket 16 is now driven while the first Einpurritzel 30 in the next tooth gap finds and the Einschwenkvorgang can be continued.

In 24 is shown how after the startup process, the current flow to the magnetic switch 44 is interrupted. The return spring 56 causes the swinging of the starting device in the starting position.

25 shows a schematic representation of an extended "stand-alone solution":
The swivel arm 40 and levers 42 are represented in this view simplified as a component.

In order to further optimize the Einschwenkverhalten over the previous embodiments, it may be advantageous if an additional synchronizer pinion 72 is used, which over the freewheel 24 with the pivot axis 62 is coupled. The pivot axis 62 is fixed with the adjusting lever 42 connected and simultaneously rotatable in the housing 50 stored. In the 26 to 32 becomes the operation of the synchronous pinion 72 clarified.

Pulls the magnetic switch 44 on the lever 42 so is the freewheel 24 switched so that the lever 42 the synchronous pinion 72 takes along and so does the first Einpurritzel 30 twisted. However, when driving the primary side gear rim 16 by the internal combustion engine, the synchronizer pinion 72 the adjusting lever 42 overhaul in terms of speed.

The first single sprocket 30 can the second Einpurritzel 32 overtake in terms of speed, however, the second Einpurritzel 32 the first single sprocket 30 accelerate.

Basically, the deep groove ball bearings, not shown, of the dual mass flywheel and the secondary side ring gear 34 placed as possible in a plane so that tilting moments on the deep groove ball bearings can be kept small.

26 represents the starting device of the 25 in starting position. The lever 42 and the swivel arm are over the preloaded leg spring 48 coupled. In the illustration, the necessary freewheels are not shown.

In 27 is shown as the magnetic switch 44 is energized. This pulls the magnetic switch 44 on the lever 42 , which makes the first Einpurritzel 30 until striking the sprocket teeth of the primary-side sprocket 16 is pivoted.

28 shows how the magnetic switch 44 continue on the lever 42 draws. In this case, the synchronous pinion 72 and thus also the first single pinion 30 twisted until this is the next tooth gap in the primary-side ring gear 16 finds and the Einschwenkvorgang can be continued.

In 29 is shown as the tooth of the first Einspurritzel 30 in the tooth gap of the primary side gear rim 16 pivots.

30 shows how the magnetic switch 44 its end position is reached while the synchronizer pinion 72 continues to be twisted. This is where the first single pinion comes into contact 16 at the end stop 38 at. Furthermore, the starter, not shown, is supplied with power. At the same time pivots the first Einpurritzel 30 completely, wherein the pivoting movement is a self-rotation of the Einspurritzels 30 causes which of the direction of rotation by the synchronous pinion 72 is opposite. These two rotational movements thus cancel each other at least partially during the rest of pivoting.

In 31 the starter drives the primary side sprocket 16 at. This in turn drives over the first Einpurritzel 30 the synchronous pinion 72 at. The not shown on the pivot axis 62 arranged freewheel allows a speed overhaul of the synchronous pinion 72 opposite the control lever 42 ,

32 shows how, after a successful start, the current flow to the magnetic switch 44 is interrupted. The return spring 56 again causes the swinging of the starting device in the initial state.

33 shows a further embodiment of a starter device. The star device includes only the first Einpurritzel 30 , Furthermore, to simplify the illustration of the lever 42 and the swivel arm 40 shown as a one-piece component without spring element.

In 34 is the Einschwenkvorgang the starting device of 33 shown. There is only a primary-side intervention for starting the internal combustion engine with advantageous gapping. The Einschwenkvorgang takes place as in the 2 ,

35 shows a starting position of another embodiment of a starting device. The starting device comprises a magnetic switch 44 on which a drawbar 74 is arranged. The drawbar 74 includes a fixed carriage stop 76 and a movable carriage 78 , Between the magnetic switch 44 and the sled stop 76 is the return spring 56 arranged. Furthermore, between the carriage 78 and that of the magnetic switch 44 opposite arranged end of the drawbar 74 is a Einschwenkfeder 80 arranged. Both the return spring 56 as well as the Einschwenkfeder 80 are biased. Between the sled stop 76 and the sled 78 is the lever 42 arranged. The preloaded swing-in spring 80 pushes the sledge 78 against the lever 42 and thus the lever 42 against the sled stop 76 ,

In 36 becomes the magnetic switch 44 energized and pulls on the drawbar 74 , In this case, the return spring 56 increasingly compressed. Due to the preloaded swing-in spring 80 becomes the sled 78 against the lever 42 pressed so that the adjusting lever 42 against the sled stop 76 is pressed. Furthermore, the adjusting lever transmits 42 the movement of the drawbar 74 to the swivel arm 40 continue, so that the first Einpurritzel 30 in the direction of the primary-side gear rim 16 is moved. The first single sprocket lands 30 Tooth on tooth with the primary side sprocket 16 ,

37 shows how the magnetic switch 44 continue on the drawbar 74 pulls until the end position is reached, so that the circuit for the starter motor, not shown, is closed. In this case, both the return spring 56 as well as the Einschwenkfeder 80 maximum preloaded. The sprocket 16 is rotated by the starter motor until the next tooth gap is found.

In 38 is shown how the rest-swiveling process takes place as soon as the next tooth gap is found. This shifts the maximum preloaded Einschwenkfeder 80 the sled 78 abruptly against the lever 42 , Once the engine, not shown, reaches the ignition speed, and the engine starts to idle speed.

39 shows an initial state of another embodiment of a starting device. Unlike the starting device of the 35 to 38 , is the one-piece component, which the adjusting lever 42 and the swivel arm 40 includes on a motor axle with a starter pinion 14 arranged. The preloaded swing-in spring 80 pushes the sledge 78 against the lever 42 and thus the lever 42 against the sled stop 76 ,

In 40 is shown as the magnetic switch 44 is energized. This pulls the magnetic switch 44 at the drawbar 74 , This is the return spring 56 increasingly compressed. The single sprocket 30 tooth lands on tooth with sprocket 16 ,

41 shows how the magnetic switch 44 continue on the drawbar 74 to the end position, where now the circuit for the starter motor, not shown, is closed. In this case, both the return spring 56 as well as the Einschwenkfeder 80 maximum preloaded

In 42 shows how the starter motor builds up a speed. This is also the Einspurritzel 16 twisted until the next tooth gap is found to dip into it.

43 shows the rest of Einschwenkvorgang. This shifts the maximum preloaded Einschwenkfeder 80 the sled 78 abruptly against the lever 42 , The engine reaches the ignition speed and starts at idle speed.

Also advantageous is the possibility of helical gearing.

For better tooth gap finding when meshing, it may be advantageous if the Einspurritzel and / or the sprockets have different tip diameter. For example, the first pinion gear has a larger tip circle than the second pin gear, so that the primary-side gear pair, comprising Einpurritzel and ring gear, find the Einspurvorgang first.

An embodiment in which both Einspurritzel are rigidly coupled together, ie without freewheel on the coupling shaft, is also conceivable. However, the gears then have to be designed to transmit the ignition torques on the secondary side much more massive.

It is also conceivable to combine the adjusting lever and the swivel arm to form a component, wherein the spring element is dispensed with. In the simplest form, the embodiment of the 12 , So consist of a magnetic switch, a pivoting element, and a pivotable shaft with two rigidly coupled Einspurritzeln.

Also embodiments are conceivable in which a friction device is provided instead of the freewheel on the pivotable shaft, which couples the second pinion gear on her defined friction torque with the first Einspurritzel. The friction torque of the friction device is advantageously over 4Nm. Furthermore, the friction device can identify a clearance angle range within which the friction device generates no or only a very small friction torque. In addition to or instead of the friction device or the freewheel, the two Einpurritzel may be coupled torsionally soft with each other via a spring element.

LIST OF REFERENCE NUMBERS

10

 starter

12

 starter

14

 start pinion

16

 primary-side sprocket

18

 primary

20

 Dual Mass Flywheel

22

 starter

24

 freewheel

26

 motor axis

28

 swivel shaft

30

 first meshing pinion

32

 second meshing pinion

34

 secondary-sided sprocket

36

 second freewheel

38

 end stop

40

 swivel arm

42

 lever

44

 magnetic switches

46

 secondary side

48

 Leg spring

50

 casing

52

 Self-rotation single-sprocket

54

 Direction of rotation starter

56

 Return spring

58

 Belt starter generator

60

 Internal combustion engine

62

 leg axis

64

 Meshing

66

 attack

68

 fixed housing

70

 bolt

72

 synchronous pinion

74

 pull bar

76

 slide stop

78

 carriage

80

 Einschwenkfeder

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 19729421 A1 [0002]
• DE 102011117395 A1 [0002]
• DE 102010012514 A1 [0002]

Claims (10)

Starting device for starting an internal combustion engine ( 60 ) comprising: a pivotable shaft ( 24 ), wherein the pivotable shaft ( 24 ) via a swivel arm ( 40 ) about an axis ( 26 . 62 . 70 ) is pivotable, at least one on the pivotable shaft ( 24 ) arranged Einspurritzel ( 30 . 32 ) for engaging in at least one sprocket ( 16 . 34 ) of a dual mass flywheel ( 20 ) for starting the internal combustion engine ( 60 ), a lever ( 42 ), whereby the adjusting lever ( 42 ) with an actuator and with the swivel arm ( 40 ) is connected to transmit a movement of the actuator on the swivel arm ( 40 ) for pivoting the Einspurritzels ( 30 . 32 ) in the sprocket ( 16 . 34 ), whereby the adjusting lever ( 42 ) and the swivel arm ( 40 ) with the axis ( 26 . 62 . 70 ) are connected. Starting device according to claim 1, characterized in that on the pivotable shaft ( 24 ) a first Einpurritzel ( 30 ) for contacting a primary-side toothed ring ( 16 ) on a primary page ( 18 ) of the dual mass flywheel ( 20 ) and a second Einpurritzel ( 32 ) for contacting a secondary-side sprocket ( 34 ) on a secondary side ( 46 ) of the dual mass flywheel ( 20 ) is arranged. Starting device according to claim 2, characterized in that the first Einpurritzel ( 30 ) and the second Einpurritzel ( 32 ) are rigidly coupled to one another on the pivotable shaft, via a freewheel, via a friction device or via a spring element. Starting device according to one of claims 1 to 3, characterized in that the swivel arm ( 40 ) and the lever ( 42 ) are formed as a component. Starting device according to claim 4, characterized in that the actuator (a drawbar 74 ) comprises for transmitting a movement of the actuator on the adjusting lever ( 42 ), wherein on the drawbar ( 74 ) a fixed carriage stop ( 76 ) and a sliding carriage ( 78 ) is arranged, wherein the adjusting lever ( 42 ) between the carriage stop ( 74 ) and the carriage ( 78 ) is arranged to transmit a movement of the actuator. Starting device according to one of claims 1 to 3, characterized in that the swivel arm ( 40 ) and the lever ( 42 ) via a spring element, in particular via a leg spring ( 48 ) or via a compression spring, in particular a Einspurfeder ( 64 ) are coupled together. Starting device according to one of claims 1 to 6, characterized in that on the axis ( 26 . 62 ) a pinion ( 14 . 70 ), wherein the pinion ( 14 . 70 ) a Einpurritzel ( 30 . 32 ) contacted. Starting device according to one of claims 1 to 7, characterized in that on the axis ( 26 . 62 ) a freewheel ( 24 ) is arranged. Starting device according to one of claims 2 to 8, characterized in that the first Einspurritzel ( 30 ) and the second Einpurritzel ( 32 ) each have the same or different top circle diameter for engagement in the primary-side sprocket ( 16 ) and the secondary-side sprocket ( 34 ) with the same or different tip diameters. Method for starting an internal combustion engine ( 60 ) with a starter device according to one of claims 1 to 9, comprising the following steps: - pivoting the at least one Einspurritzels ( 30 . 32 ) in the at least one sprocket ( 16 . 34 ) of the dual mass flywheel ( 20 ) from a starting position; Igniting the internal combustion engine ( 60 ) with a starter ( 12 ) or a belt starter generator ( 58 ); - reaching the idling speed of the internal combustion engine ( 60 ); and - swinging the starting device to the starting position.

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