EP1149240B1 - Starting system for an internal combustion engine - Google Patents

Description

The invention relates to a starter modular system for a starter of an internal combustion engine, in particular in motor vehicles.

State of the art

It is known that internal combustion engines up be turned on to achieve a self-run have to. For this purpose, in motor vehicles so-called Launch facilities used. These launch facilities include one powered by a motor vehicle battery Starter motor, a countershaft transmission and a Einspuranordnung. To start the internal combustion engine is the starter motor over a Starter switch (ignition switch) with the motor vehicle battery connected. With commissioning of the Starter motor turns a pinion into one on one Crankshaft of the internal combustion engine arranged Sprocket meshed, so the internal combustion engine can be turned on. Because the Starter motors have a much higher speed as that for cranking the internal combustion engine required speeds, there is an adjustment these speeds via a countershaft transmission. The countershaft transmission is usually a planetary gear formed, with the sun gear of the starter motor is driven and the crankshaft is operatively connected to the planetary gears.

A required for cranking the internal combustion engine Crankshaft torque and a crankshaft minimum speed depend on parameters of Internal combustion engine, for example, stroke volume, Number of cylinders, compression, friction losses, Temperature, additional loads. Thus, a starting system the parameters of the internal combustion engine adapt. There are in particular starting systems with different output powers and / or different Output speeds needed.

In the known starting systems is disadvantageous since this to achieve a high space utilization formed in a so-called nested construction are that to adjust the starter power and / or the starter output speeds one Variety of differently sized launch systems needed. An adaptation to changed Parameters of an internal combustion engine can only about a new dimensioning or construction take the entire starting system.

It is known from GB 2 184 787 A to assemble to accelerate a starting system thereby and improve by having an element of the launch facility, namely the reducer, in one already compound state in the manufacturing process is introduced. This lead required Changes in the starter characteristic but continue to a significant redesign or redesign. DE 197 45 997 A1 proposes a electric machine via a intermediate translation with a shaft in the drive train of the internal combustion engine to couple, thus the electric machine both when starting the engine a Provides adequate mechanical performance and safe can transmit as well as when operating as a generator with higher speeds a high electrical Can deliver performance.

Advantages of the invention

The starter modular system according to the invention for a Starting system of an internal combustion engine with the in Claim 1 features offered in contrast the advantage that in a simple way an adaptation on internal combustion engines with different Parameters can be done. Because of the main components the launch system designed as individual modules are and variable to takeoffs with different Parameters can be supplemented, can be in a simple way different from the individual modules Start plants finished without it one Reconstruction of the entire starting system required. In this case, the starter kit system has a plurality of module quantities of different module types, wherein a first module amount at least one drive module and a second module amount at least a transmission module and at least one of these Module quantities at least two modules of a module type having. Each drive module has a first one standardized interface in the form of a pinion and each transmission module a second standardized one Interface in the form of a receptacle for a pinion on. This is a drive module with different Transmission modules and / or a transmission module can be combined with different drive modules. Thus, the adaptation of the starting system to a desired Crankshaft speed exclusively via the transmission modules take place, or is it possible, different crankshaft torques via drive modules with different performance parameters, however, same gear modules, to achieve.

In a preferred embodiment of the invention is provided that the starter kit system Electronic module: This makes it possible that the main components of the launch system, each individually, to desired output parameters can be optimized so that accordingly the existing differently sized Single modules the desired starting system with the required parameters can.

Overall, it is clear that through the modular Concept of the starter modular system same modules for different starting system performance classes can be used. By Consideration of standard dimensions for the individual Modules (module quantities) can be this so cost-effective final assembly, with a production cost and thus reduces the manufacturing costs are. In particular, this also results high flexibility in the final assembly of the Starting system, especially with a quick adjustment to changed application requirements of different internal combustion engines.

Further advantageous embodiments of the invention arise from the rest, in the dependent claims mentioned features.

drawings

Figur 1

eine Schnittdarstellung einer Startanlage, die aus einem ersten Ausführungsbeispiel eines Starterbaukastensystems gefertigt wurde;

Figur 2

Hauptbaugruppen der Startanlage gemäß Figur 1;

Figur 3

eine Schnittdarstellung einer Startanlage, die aus einem zweiten Ausführungsbeispiel eines Starterbaukastensystems gefertigt wurde, und

Figur 4

ein Blockschema zur Fertigung einer Startanlage aus einem Starterbaukastensystem

The invention will be explained in more detail with reference to drawings. Show it:

FIG. 1

a sectional view of a starting system, which was made from a first embodiment of a starter kit system;

FIG. 2

Main modules of the starting system according to Figure 1;

FIG. 3

a sectional view of a starting system, which was made of a second embodiment of a starter kit system, and

FIG. 4

a block diagram for the production of a starter system from a starter modular system

Description of the embodiments

FIG. 1 shows a total designated 10 Starting system for an internal combustion engine, not shown. The starting system 10 includes within a housing 12 a starter motor 14 and as Planetary gear formed countershaft transmission 16th Structure and function of such starting systems 10 are known in the present description will not be discussed in detail.

In Fig. 2 are sectional views of the two main groups the launch system in not final mounted State shown. In this case, the drive motor 14 forms a drive module 18 and the countershaft transmission 16 a Transmission module 20. The starter motor 14 is a DC motor, its structure and function as well are generally known. An armature shaft 22 of the Starter motor 14 carries a pinion 24, the rotation is arranged on the armature shaft 22. The armature shaft 22 is over the housing 26 of the starter motor 14th extended and is in a guide 28 of the Countershaft transmission 16 can be introduced. When mounting the Drive module 18 with the transmission module 20 engages the Anchor shaft 22 in the guide 28, so that the Aufsteckritzel 24 planet gears 30 of the countershaft transmission 16 combs. The Aufsteckritzel 24 forms thus the sun gear of the countershaft transmission (planetary gear) 16. An output shaft 32 of the transmission module 20 carries a pinion 34, which in one on a Crankshaft of the internal combustion engine arranged Sprocket in a conventional manner einspurbar is.

According to a speed request and / or a Torque request for starting (cranking) the Internal combustion engine can by appropriate Selection of the drive module 18 and / or the transmission module 20 the starting system 10 dimensioned accordingly become. The torque can be selected a power of the starter motor, for example between 0.7 kW and 2.3 kW can reach. The adaptation to a required speed can be determine by translation of the counter gear 20, wherein by selecting a corresponding pinion 24 the translation at otherwise the same drive module 18 and gear module 20th can be varied. It becomes clear that so with little effort starting facilities 10 for different Requirements, for example with regard to one Crankshaft torque and / or crankshaft speed, be provided in a simple manner can. The individual basic components of the launch system 10 can be mass-produced inexpensively as a concrete adaptation either by Selection of the drive module 18 and / or selection of the Pinion 24 and / or the transmission module 20 is possible.

A freewheel the starting system 10 is in the countershaft transmission 20 integrated. This freewheel separates the Starter motor 14 of the crankshaft of the internal combustion engine, if this has a minimum speed. This avoids that when overtaking the Anchor speed through the crankshaft speed one Damage to the drive motor 14 may occur.

Figure 3 shows a modified starting system 10, at in addition to the drive module 18 and the transmission module 20 an electronic module 36 is integrated. The electronic module 36 assumes control functions for the starting system 10, for example a start-stop function, a Stromtaktung and / or an immobilizer function. Such functions are also known. Of interest to the present invention is that the electronic module 36 as a compact module with is integrated into the housing 12 of the starting system 10. The electronic module 36 may, for example, to the Be flanged drive module 18. To bridge the axial extent of the electronic module 36 is the armature shaft 22 is designed to be longer, so that these in the guide portion 28 of the transmission module 20 can intervene. With reference to FIG 3 is it is clear that by replacing the Electronic module 36 different functions of Starting system 10, as desired by the user, without further be implied in the starting system 10 can. The remaining components, the drive module 18 and the transmission module 20, remain of such Accommodation unaffected.

Overall, it can be stated that each of the individual modules, that is, the drive module 18, the Electronic module 36 and / or the transmission module 20, for can be optimized. These are ready standardized that during the final assembly of launch facilities 10 each differently available drive modules 18, electronic modules 36 and gear modules 20 can be combined with each other can. Crucial for this is solely and solely the request of the user of the launch system 10.

Figure 4 illustrates in a block diagram the Final assembly of starting systems 10 from different Modules. Here is the production of the drive modules at 40 18, with 42 the production of the gearbox modules 20 and with 44 the production of electronic modules 36 denotes. For the production of drive modules 18 is here within the complex 40th For example, indicated that in a step 46 the armature shaft is provided in one step 48 the anchor assembly takes place, in a step 50 the Polgehäusemontage takes place and finally in one Step 52, the assembly of the drive module 18 takes place.

According to the application request to the starting system 10 are then in a final step 54, the corresponding Drive module 18, the corresponding gear module 20 and the corresponding electronic module 36 completed to the desired starting system 10. Due to the explained modular structure, whereby the individual modules also with different Performance parameters or translation parameters are compatible with each other, can the Making start-up systems 10 much easier and thus more cost-effective.

Claims (6)

1. Starter building block system for a starting system (10) for an internal combustion engine, having two or more module sets of different module types, with a first module set having at least one drive module (18) and a second module set having at least one transmission module (20), and at least one of these module sets having at least two modules of one module type, with each drive module (18) having a first standardized interface in the form of a pinion (24), and each transmission module (20) having a second standardized interface in the form of a holder for a pinion (24), so that a drive module (18) and a transmission module (20) can be operatively connected to one another by moving the first and the second interface together, and in which case at least one module in one module set can be connected to at least two modules of another module set.
2. Starter building block system according to Claim 1, characterized in that the starter building block system has an electronics module (36).
3. Starter building block system according to one of the preceding claims, characterized in that the transmission module (20) has an epicyclic transmission.
4. Starter building block system according to Claim 3, characterized in that a sun wheel of the epicyclic transmission (16) is a plug-on pinion (24) for a driveshaft (22) for the drive module (18).
5. Starter building block system according to one of the preceding claims, characterized in that the transmission module (20) has an integrated freewheeling mechanism.
6. Starter building block system according to one of Claims 2 to 5, characterized in that the electronics module (36) is arranged between the drive module (18) and the transmission module (20).

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