EP0757172B1 - Combustion engine with suction module or suction conduit fixed to it and method of fixing a suction module or a suction conduit to an engine - Google Patents

Description

State of the art

The invention is based on an internal combustion engine a suction module attached to the internal combustion engine or Suction pipe according to the preamble of claim 1 or them relates to a method for attaching a suction module an internal combustion engine according to claim 15.

There are internal combustion engines that have air through an intake manifold or a fuel-air mixture is supplied. A Fasteners hold the suction pipe or suction module in a holding direction against the internal combustion engine. Both known designs, the fastener comprises several Fastening screws with which the suction pipe against the Internal combustion engine, especially against a cylinder head the internal combustion engine is held. For mounting the suction module or the intake manifold to the internal combustion engine or for disassembly from the internal combustion engine Screw heads of the fastening screws for a suitable one Be accessible. The cylinder head includes Crankcase or a cylinder tube of the internal combustion engine upwards and takes up gas exchange organs, for example. It also forms together with a piston of the internal combustion engine a desired combustion chamber shape. At for passenger cars usual internal combustion engines is usually a Cylinder head for all cylinders of the internal combustion engine used.

In modern internal combustion engines, the intake manifold an increasing number of other components connected. This Components are, for example, a throttle device Control unit, a pressure sensor, a temperature sensor, a Injection valve, a fuel distributor, an ignition coil, a tank ventilation valve and other actuators, Sensors, cables, hoses, etc. The above Components can also be used in multiple numbers on one intake manifold be provided. The suction pipe together with the attached or integrated components is often considered a called so-called suction module.

Because a not inconsiderable on the suction pipe of the suction module Number of different components is built, that builds Suction module often relatively voluminous, which is the accessibility difficult to the fastening screws. It is often necessary that first the suction pipe with the fastening screws screwed to the cylinder head of the internal combustion engine must be before the other components on the Suction pipe can be attached. It is not that possible to complete the suction module with all its components assembled for attachment to the internal combustion engine ready. Also a test of the complete suction module mounting on the internal combustion engine is hardly possible.

With the suction module fully assembled, the fastening screws are often not accessible, must Intake pipe from the internal combustion engine first at least one Part of the components of the suction module removed from the suction pipe be before the intake manifold to the internal combustion engine holding fastening screws are accessible.

The intake manifold alone is often already quite voluminous and complicated designed. That is why even if only the intake manifold without further components on the internal combustion engine to be fixed, accessibility to the Fixing screws are often considerably more difficult or at The design of the intake manifold is considerable for the designer limited.

US-A-4 372 120 shows an internal combustion engine as a V-engine with two suction lines. There is a on the suction lines Intake pipe connector using several fastening screws screwed on. Between the intake manifold connector and the An elastic seal is provided for each suction line. The elastic seal is arranged so that the Intake pipe connector from the suction lines in terms of vibration is isolated to prevent unwanted sound transmission avoid what is supposed to reduce noise.

Advantages of the invention

The internal combustion engine according to the invention with it attached suction module or suction tube with the characteristic Features of claim 1 and the method according to the invention with the features of claim 15 offers the significant advantage that the suction pipe or Fastener holding suction module on the internal combustion engine can be designed with the holding element so that the intake manifold even in difficult installation conditions preferably together with all components or together with essential components of the suction module simply attached to the internal combustion engine or by the internal combustion engine can be dismantled.

The fastener with the at least one holding element is advantageously very simple to design so that a unintentional loosening is not possible.

Through the measures listed in the dependent claims are advantageous developments and improvements of Internal combustion engine with the intake manifold attached to it Claim 1 or the method according to claim 15 possible.

If the at least one holding element on several Holding surfaces (engine holding surfaces) and / or supports several counter-holding surfaces (suction module holding surfaces), then this results in a distribution between the suction module and the internal combustion engine to be transmitted and thus for an improved advantageous fastening of the suction module or the intake manifold on the internal combustion engine.

If the holding element is designed as an elastically deformable element, then you also get in the usual framework lying dimensional tolerances a reliable advantageous fastening of the suction module or the intake manifold on the internal combustion engine.

Due to the U-shaped cross section, the fastener is particularly easy to manufacture, and it advantageously results a particularly secure connection between the Suction module or suction pipe and the internal combustion engine.

If the fastener is designed so that the holding element also before the suction module or suction pipe with the Internal combustion engine is connected or even if that Suction module or intake pipe from the internal combustion engine is dismantled, either with the internal combustion engine or with the suction module or suction pipe is coupled, then this offers the advantage that the holding element cannot be lost. If the holding element is attached to the suction module or suction pipe, then this offers the additional advantage that the Holding element together with the suction module or suction pipe and the other components form a preassembly can.

The manufacture of the internal combustion engine or the cylinder head the internal combustion engine is simplified if the Holding surface (engine holding surface) on one with the Internal combustion engine connected stop piece (Internal combustion engine stop piece) is provided. Corresponding advantages result in the same way if the counter holding surface (suction module holding surface) on one with the Suction module or suction pipe connected counter stop (Suction module stop) is provided. A special one simple manufacturing execution also arises if the stop piece or the counter stop piece in the form of a Bolt or stud is realized.

By the slope on the internal combustion engine or on Cylinder head and / or on the intake module or intake manifold and / or on Holding element has the advantage that a simple Displacement of the holding element a bias can be generated.

drawing

Selected, particularly advantageous embodiments of the Invention are shown in simplified form in the drawing and explained in more detail in the following description. Show it Figures 1 to 28 differently trained, especially advantageous, selected exemplary embodiments in an overview or details of various exemplary embodiments or Cutouts of the internal combustion engine or the cylinder head with attached suction module or suction tube.

Description of the embodiments

The internal combustion engine is, for example an engine, the air or a fuel-air mixture over a suction pipe is fed. The suction pipe can be used together with various other components to a so-called suction module be assembled. The other components can e.g. B. parts required for gasoline injection, as well as various Actuators, sensors, cables and hoses. The components can in particular be a Throttle valve of a throttle device, a control unit, a pressure sensor, a temperature sensor, an injection valve, a fuel distributor, an ignition coil, a Act on the tank vent valve, etc. Depending on the number of These components are cylinders in the internal combustion engine according to the required quantity available.

Summarizing the suction pipe with the different ones Components to a suction module offers the advantage that Suction module can be completely prepared and checked if necessary, before being passed on to the internal combustion engine for assembly becomes.

The area of the internal combustion engine on which the suction module Usually attached, is often called a cylinder head designated.

In the exemplary embodiments described below attached to the internal combustion engine, a suction module, the Suction module has an intake manifold that is located on the internal combustion engine supports. This is only an example. It is also possible that the suction module is not over the suction pipe, but via another suitable component on the internal combustion engine supports.

Although the advantages of the invention are particularly extensive building suction modules are particularly important mentions that the invention is also advantageous can be used if not a suction module, but instead whose an intake manifold attached to the internal combustion engine shall be.

Figure 1 shows a first embodiment.

In the figure 1 is a section of a cylinder head 2 of an internal combustion engine 4. Figure 1 also shows a suction module 6. The suction module 6 comprises a Intake pipe 8.

The suction module 6 is by means of a fastener 10 attached to the cylinder head 2 of the internal combustion engine 4.

There is a flange 12 on the cylinder head 2 and on the suction module 6 or on the intake manifold 8 there is a flange 14. On the cylinder head 2 of the internal combustion engine 4 is a flange surface 16 provided, and on the suction pipe 8 of the suction module 6 there is one Flange surface 18.

With the suction module 6 mounted on the internal combustion engine 4 are the two flange surfaces 16, 18 with prestress mutual touch.

A recess 20 is provided in the area of the flange 12. On the suction pipe 8 there is in the area of the flange 14 a projection 22. The projection 22 stands with the recess 20 so engaged that a guide 24 is formed, the prevents the suction module 6 from facing the internal combustion engine 4 move parallel to the flange surfaces 16, 18 can. The guide 24 only allows movement of the Suction module 6 perpendicular to the internal combustion engine 4 the flange surfaces 16, 18. This direction is in the drawing by an arrow provided with the reference number 30 shown and is referred to below with the holding direction 30.

The recess 20 and the projection 22 are not mandatory required. The guide 24 can also be dispensed with become. The flange surfaces 16 and 18 can also be arranged in this way be that together with the flanges 12 and 14 level Areas are created. Possibly. a fixing pin can be provided be the during the assembly of the suction module 6 to the internal combustion engine 4 ensures centering.

A suction channel 26 runs through the suction pipe 8. The suction channel 26 runs through the flange surfaces 16, 18 and sets beyond in cylinder head 2. In the field of A flange 28 is provided on flange surfaces 16, 18. The Seal 28 surrounds the suction channel 26 and seals the suction channel 26 towards the outside.

The fastening means 10 holds the suction module 6 in the direction arrow 30, d. H. in the holding direction 30 against the cylinder head 2 of the internal combustion engine 4.

In the embodiment shown in Figure 1 includes the fastening means 10 a holding surface 32 Holding element 33 and a counter-holding surface 34. On the there is another opposite side of the suction channel 26 further holding surface 32, a further holding element 33 and a further counter surface 34. These parts are also Components of the fastener 10. To read the Description of the exemplary embodiments mentally To enable easy and quick assignment, are below the holding surface 32 mostly as an internal combustion engine holding surface 32 and the counter holding surface 34 as a suction module holding surface 34 designated.

The engine holding surface 32 is located directly on Cylinder head 2 of the internal combustion engine 4. The invention can also be designed so that the engine holding surface 32 indirectly with corresponding intermediate pieces the internal combustion engine 2 is connected. In the illustrated Embodiment is the suction module holding surface 34 directly on the suction module 6. It is also possible, however To implement the invention so that the suction module holding surface 34th indirectly via appropriate adapters with the suction module 6 is connected.

FIG. 2 shows a section of the view shown in FIG. 1. For the sake of clarity, a different scale was chosen for FIG. 2.

The same or equivalent parts are included in all the figures provided the same reference numerals.

The holding element 33 is an elongated structure, the U-shaped cross section shown in Figures 1 and 2 is. The cross section of the holding element 33 can also be as to be called in brackets. The cross section of the Roughly speaking, the holding element 33 can be in a lower one Leg 33a, a bridge 33b and into an upper leg 33c can be divided. The end facing away from bridge 33b of the leg 33c is shaped and the flange 14 of the Suction module 16 is designed in this area so that here forms a fuse 36 (Fig. 2). To form the Fuse 36 are located on the suction module 6 perpendicular to image plane shown in FIG Holding edge 37a and on the holding element 33 a perpendicular Holding lug 38a extending to the image plane.

The retaining edge 37a and the retaining lug 38a, which is the fuse 36 form, are coordinated so that the holding element 33 not from the engine holding surface 32 and can slide off the suction module holding surface 34, but instead even when exposed to extreme vibrations, that the suction module 6 securely in the holding direction 30 against the Internal combustion engine 4 is held.

FIG. 3 shows a view of the long side of the first exemplary embodiment shown in FIG. 1 in front view.

An arrow III is shown in FIG. Figure 3 shows the internal combustion engine 4 with the attached suction module 6 in the direction of arrow III.

3 shows the holding element 33 and another continuous holding element 33z. One notices, that the holding element 33z is an elongated bar. Of the Cross section of the coherent holding element 33z corresponds essentially the cross section of the holding element 33, except for the differences mentioned, so that the in the Drawing of the holding element in cross-sectional figures both for the holding element 33 and for that connected holding element 33z apply. The holding element 33z is divided into an area in its longitudinal direction with the leg 33a, the bridge 33b and the leg 33c, into an area with a leg 33a ', a bridge 33b' and a leg 33c 'and in an area with a leg 33a '', bridge 33b '' and leg 33c ''. With the holding element 33z exists between bridge 33b and bridge 33b ' a transition area 33d. Accordingly, there are between the bridges 33b 'and 33b' 'a transition region 33d'. On the transition regions 33d, 33d 'are the legs interrupted. The cross section of the contiguous Holding element 33z in the region of the legs is the same as that shown in Figures 1 and 2 cross section of the Holding element 33.

In FIG. 3 there is one with the reference number 40 Arrow shown with dashed lines. The Direction of this arrow 40 is subsequently used as the closing direction Designated 40.

FIG. 3 shows the holding element 33 and the holding element 33z in fully assembled condition. Become the holding elements 33 and 33z moved against arrow 40, then opens the fixed mechanical connection between the suction module 6 and the internal combustion engine 4. When moving the holding elements 33 and 33z in the symbolized by the arrow The closing module 40 becomes the suction module 6 in the holding direction 30 mechanically firmly pressed against the internal combustion engine 4 (Arrow 30 in Figs. 1 and 3).

In the embodiment shown in Figures 1 and 3 the suction module 6 comprises the suction pipe 8, four Injectors 42, 42 ', 42' ', 42' '', a fuel distributor 44, an electrical contact strip 46, a Throttle valve 48 shown in dashed lines, an actuator 50, an air filter connection 52, an electrical Control unit 53, a plug connection 54, a plug connection 55, an ignition distributor 56, and two sensors 57, 58 and a plug connection 59. To the suction module 6 still belong various other parts and wiring harnesses, but the better clarity not in the drawing are depicted.

The suction pipe 8 together with the parts 42 to 59 form one complete unit. This unit is called a suction module 6 designated. The parts 42 to 59 are screwed onto the suction pipe 8, clipped on, molded or together with the Suction pipe 8 made in a common injection molding process.

Since the suction module 6 has a not inconsiderable number of components contains, the suction module 6 builds relatively extensive. Because the fastener 10, the suction module 6 on the internal combustion engine 4 holds, at least according to the present invention in places where otherwise the accessibility to put on or loosening a fastening screw would be problematic, does not include a mounting screw during assembly of the suction module 6 attracted to the internal combustion engine 4 or would have to be solved if disassembled in the design of the shape of the suction module 6 or Intake pipe 8 no consideration of accessibility any fastening screws.

FIG. 4 shows an excerpt from a further advantageous exemplary embodiment modified compared to FIG. 1 in an exemplary form with a changed scale. The parts not shown in Figure 4 correspond to the parts shown in Figure 1.

Unless otherwise stated or in the drawing is shown, that applies to one of the figures and illustrated in the other embodiments. Unless otherwise stated in the explanations, are the details of the various embodiments can be combined with each other.

In the embodiment shown in Figure 4 the fuse 36 consists essentially of an Flange 14 of the suction module 6 firmly anchored pin 62 and from one provided in the leg 33c of the holding element 33 Security slot 64. Because the flange 14, for example Is plastic, is a sleeve 63 in the plastic cast in which the pin 62 is anchored. On the Sleeve 63 can also be omitted and the pin 62 can e.g. B. be molded directly onto the intake manifold 8. The pin 62 has a shaft 62a and a head 62b. Of the Security slot 64 is an elongated hole and together with the Head 62b of the pin 62 dimensioned so that even when the internal combustion engine 4 removed suction module 6 Holding element 33 or 33z is coupled to the suction module 6 and stays. The head 62b ensures that the holding element 33 or 33z cannot fall off the suction module 6. Of the Security slot 64 is so long that the holding element 33 in Closing direction 40 (FIG. 3) or against closing direction 40 can be moved to the required extent.

The at least one holding surface 32, also as Engine holding surface 32 designated, can for example directly on the internal combustion engine 4 or Cylinder head 2 of the internal combustion engine can be provided (Fig. 1 and 2). The engine holding surface 32 can but also on one connected to the internal combustion engine 4 Stop piece 66, also as an engine stop piece 66 designated, may be provided. As Figure 4 shows the engine stop 66, for example with one or more screws 68 to the Screwed on cylinder head 2. Because the engine stop 66 screwed to the cylinder head 2 can be before the suction module 6 with the internal combustion engine 4 is connected, there is unimpeded access for screwing in the screw 68. The screw 68 can additionally also z. B. glued or by another Rotation lock are secured against loosening or loosening, without the possibility of removing the suction module 6 hindered by the internal combustion engine 4. Through this Securing the screw 68 ensures that the Suction module 6 not involuntarily from the internal combustion engine 4 replaces.

In the embodiments shown in Figures 1 to 4 is the counter surface 34, also as Suction module holding surface 34 designated by the leg 33c of the Holding element 33 is applied in the holding direction 30, directly on the intake manifold 8, the z. B. from a single piece molded plastic.

As FIG. 5 shows by way of example, a separate counter stop piece 70 can be attached to the suction pipe 8 of the suction module 6. The counter stop piece 70 is usually referred to below as a suction module stop piece 70 in order to support the mental assignment. The flange 14 of the suction module 6 ensures that the suction module stop piece 70 cannot deflect in the direction of the internal combustion engine 4. So that the suction module stop piece 70 cannot fall off the suction module 6 before the suction module 6 is installed on the internal combustion engine 4, the suction module stop piece 70 is glued to the suction pipe 8, for example, or secured by a retaining ring (not shown). The counter holding surface 34 or suction module holding surface 34 is located in FIG. 5 on the counter stop piece 70 or suction module stop piece 70

FIG. 6 shows the stop piece 66 or internal combustion engine stop piece 66 in an exemplary preferred form with a changed scale as a single part.

As FIG. 6 shows, there are in the internal combustion engine stop piece 66 to a longitudinal part 74 four cams 72, 72 ', 72 '', 72 '' 'molded. The longitudinal part 74 has a long side 74a, with which the engine stop piece 66 in assembled state on the cylinder head 2 of the internal combustion engine 4 is present. In the longitudinal direction on the longitudinal part 74 there is one Projection 74b. The projection 74b serves to enlarge the Long side 74a for engine stop 66 on the largest possible area with the internal combustion engine 4 is connected. The projection 74b is in the in the Figures 4 and 5 illustrated embodiments available. A projection 78 can also be seen on the cam 72. The meaning of the projection 78 is explained below with reference to FIG Figure 7a explained.

FIG. 7 a shows a section of the internal combustion engine stop piece 66.

For better understanding and around individual contours It can be seen particularly clearly in FIG. 7a a cutting plane chosen so that the cam 72 cut is shown. The section plane also runs through the leg 33a of the holding element 33 or 33z. Of the Section through the leg 33a is inserted in Figure 7a. A dashed line can also be seen in FIG. 7a Arrow symbolizing the closing direction 40, in which the Holding member 33 must be moved to the fixed mechanical Connection between the suction module 6 and the internal combustion engine 4 manufacture. To release this connection the holding element 33 moves against the closing direction 40.

On the underside (based on Fig. 7a) of the cam 7 of the Engine stop 66 is located Holding surface 32 or engine holding surface 32. At the Side of the cam 72, from which the leg 33a when moving of the holding element 33 comes in the closing direction 40 a stepped bevel 76. The bevel 76 can be divided into a slope 76a and one Slant 76b. The slope 76a is relatively steep, so during the assembly process, d. H. when pressing the Holding element 33 in the closing direction 40, the suction module 6 is moved quickly against the internal combustion engine 4. The second Slant 76b is relatively flat, so when desired Preload or spring force does not include the holding element 33 large force must be actuated in the closing direction 40.

7a is the leg 33a of the holding element 33 shown with solid lines in the position in which it is located during assembly. In addition, in the Figure 7a of the legs 33a of the holding member 33 again broken lines are shown in the position in which he is in the fully assembled state.

A closer look at FIG. 7a shows that the Leg 33a before it touches the slope 76 by one Span 79 is higher (based on Fig. 7a) than in finished assembled condition. This means that during assembly in the holding element 33, in particular also in the bridge 33b, (Fig. 1) during assembly by elastic deformation a preload or spring force is created which ensures that the suction module 6 with bias or with a Spring force against the internal combustion engine 4 in the holding direction 30 is pressed.

At the transition between the slope 76 and the engine holding surface 32, the projection 78 is provided. Of the Projection 78 acts as a fuse 78a, which is finished in assembled state ensures that the holding element 33rd or 33z also under the influence of large vibration loads do not move unintentionally against the closing direction 40 can. This ensures that without elaborate security measures the suction module 6 fixed and remains permanently connected to the internal combustion engine 4.

As FIG. 7a shows, the engine holding surface is located 32 on cam 72. In the case of the figures 4 and 5 embodiments shown is the cam 72 indirectly via the engine stop 66 Cylinder head 2 assigned to the internal combustion engine 4. According to Figures 1 and 2, it is just as possible on the To dispense with the engine stop 66 and the Cam 72 with the engine holding surface 32 directly on To provide cylinder head 2 or on the internal combustion engine 4.

In the illustrated embodiment, the Sloping 76 in connection with the engine 4 connected, essentially in the direction of the holding direction 30 agile engine holding surface 32. Let it be indicated that the invention can be modified so that the slope 76 is not in the area of the engine holding surface 32, but following the one with the Suction module 6 connected, essentially against the holding direction 30 facing suction module holding surface 34 is provided can be. This moving the bevel 76 from the Internal combustion engine 4 assigned area to the suction module 6 assigned area can carry out the expert without an additional pictorial representation is required.

FIG. 7b shows a further, preferably selected, particularly advantageous exemplary embodiment.

The section plane in FIG. 7b is the same as in FIG of Figure 7a.

In contrast to the embodiment shown in Figure 7a the slope 76 is not on Cam 72, but the bevel 76 is on the lower Leg 33a of the holding element 33 formed. The holding element 33 or 33z is, for example, one made of stable Sheet metal stamped part. In this case it is not noticeable additional effort very simple, the holding element 33 or 33z so that the bevel 76 together with the Leg 33a arises.

The same leg 33a is shown twice in FIG. 7b. The is in the fully assembled state Leg 33a of the holding element 33 in the figure 7b with position shown by dashed lines. With solid The leg 33a of the holding element 33 is lines shown in the position in which he is during the Assembly is just before the slope 76 the cam 72nd reached. The holding element 33 continues in the closing direction 40 to the position shown with dashed lines is then moved by the cam 72, which along the Slant 76 slips, the lower leg 33a of the holding element 33 in the holding direction 30 by the amount of the span 79 pulled down (based on Fig. 7b), resulting in a Preload or spring force in the holding element 33 or 33z leads, whereby the suction module 6 with bias or Spring force in the holding direction 30 against the internal combustion engine 4 is stretched. The on the leg 33a of the holding member 33, at the end of the slope 76 provided projection 78 provides in the position shown with dashed lines for that even with high shaking stress, the holding element 33 is not moved against the closing direction 40. In this position snags because of the projection 78 Holding element 33 with the cam 72. The fuse is created 78a. The fuse 78a ensures that under none Under certain circumstances, an unwanted detachment of the suction module 6 from the Internal combustion engine 4 can take place.

FIG. 8 shows an example of a particularly advantageous embodiment of the coherent holding element 33z.

As FIG. 8 shows, the securing slot 64 has one elongated shape with a first end 64a and a second Late 64c. Between the two ends 64a, 64c the Security slot 64 a widening 64b.

In a preferred embodiment (Fig. 4) Holding element 33 from the head 62b of the pin 62 on the flange 14 of the Suction module 6 held. Except for the broadening 64b (Fig. 8), the security slot 64 is so wide that the head 62b of the pin 62 does not fit through the securing slot 64.

Before the suction module 6 is connected to the internal combustion engine 4 the position of the holding member 33z is such that the pin 62 (FIG. 4) in the region of the first end 64a (FIG. 8) is located. In the area of the first end 64a is on the leg 33c a bulge 33e is provided. The bulge 33e is either a thickening of the material thickness of the leg 33c or the leg 33c is to form the bulge 33e wavy bent. The bulge 33e has the purpose that before mounting the suction module 6 to the internal combustion engine 4 the holding element 33 between the head 62b (Fig. 4) and the Flange 14 is slightly pinched and thereby its intended Location retains. This simplifies the assembly of the suction module 6 to the internal combustion engine 4. As required the bulge 33e may be dispensed with.

During the assembly of the suction module 6 to the internal combustion engine 4, the holding element 33z becomes 40 in the closing direction (Fig. 8) for example with simple hammer blows moved until the holding element 33z with the leg 33a the position shown in dashed lines in FIG. 7a reached. The hammer blows are only exemplary. In instead, modern manufacturing facilities become one Closing device used, with the help of a Hydraulic cylinder or pneumatic cylinder the holding element 33 or 33z is moved in the closing direction 40. In the Position shown in dashed lines (Fig. 7a) is the second end 64c of the security slot 64 just before Stift 62. The same applies to a shape of the Holding element 33 or 33z according to Figure 7b.

The widening 64b (Fig. 8) is provided so that the Holding element 33z over the head 62b of the pin 62 (FIG. 4) can be put up. This allows the pin 62 and then the holding element 33z can be attached to the suction module 6. The pin 62 can, for example, by a common Spraying process can be integrated in the suction pipe 8. Possibly. can the widening 64b can be dispensed with if one at the attachment of the pin 62 to the flange 14, the holding element 33 or 33z at the same time. Then that is not applicable Possibility to easily remove the holding element 33 or 33z.

The coherent holding element 33z differs from Holding element 33 essentially only in that the holding element 33 only a lower leg 33a and an upper one Legs 33c are present in the coherent holding element 33z, however, several lower legs and / or several upper thigh. With the coherent holding element 33z the number of lower legs available from the number the upper leg differ. It is also possible that Training element 33 and 33z so that at least one of the legs is supported in several places between the leg and the engine holding surface 32 or the suction module holding surface 34 takes place.

FIG. 9a shows an advantageous option, selected as an example, for executing the area of the intake manifold 8 of the intake module 6 that plays a role in the attachment of the intake module 6 to the internal combustion engine 4. The remaining part of the suction pipe 8 has been cut away in FIG. 9a for better clarity. The projection 22 can be seen in FIG. 9a.

FIG. 9b shows an embodiment without this projection. FIG. 9b shows an exemplary embodiment in which the side of the suction module 6 facing the internal combustion engine 4 is flat and bears against the internal combustion engine 4 on a flat surface.

It can be seen in FIGS. 9a and 9b that the suction pipe 8 in addition to the flange 14 there are further flanges 14 ', 14' ', 14' ''. The flanges 14 ', 14' ', 14' '' are designed in the same way as the flange 14. As shown in Figure 4, this is Holding element 33 in the area of the security slot 64 from Pin 62 held. In the same way, the holding element 33 or 33z in the area of the security slot 64 '(FIG. 8) held by pin 62 '(Fig. 9a, 9b). It is accordingly also with the additional security slot 64 ''.

During the assembly of the suction module 6 to the internal combustion engine 4 is the holding element 33 or 33z on Suction module 6 in the position in which the leg 33a (Fig. 8) of the holding member 33z between the cam 72 and the cam 72 '(Fig. 6) fits through. It is the same with the thigh 33a ', during the assembly of the suction module 6 to the internal combustion engine 4 in the space between the cam 72 ' and the cam 72 '' is passed through. Is accordingly it with the leg 33a '' between the two cams 72 '' and 72 '' 'is passed through.

For clamping the suction module 6 to the internal combustion engine 4 for example with the mentioned locking device Holding element 33 in the closing direction 40 (Fig. 7a or 7b) moved so that the leg 33a of the in Figure 7a or 7b extended position in the figure 7a and 7b Position shown in dashed lines. Is accordingly it with the leg 33a ', which is after assembly of the engine holding surface 32 '.

FIGS. 10 and 11 show, in exemplary form, details of a further, preferably selected, particularly advantageous embodiment of the invention in cross section (FIG. 10) and in side view (FIG. 11). The parts not shown in Figures 10 and 11 largely correspond to the embodiment shown in Figures 1 and 3.

As FIG. 10 shows, the holding element 33 or 33z an area with an approximately L-shaped cross section.

The arrangement of the engine holding surface 32 corresponds the arrangement shown in Figure 1 can but also, as shown in FIG. 4, via the engine stop piece 66 done.

In the embodiment shown in Figure 10 is the suction module holding surface 34 in the upper (referred 10) peripheral region of the shaft 62a of the pin 62. Just as in the other embodiment, so supports also in the embodiment shown in FIG the holding element 33 or 33z on the suction module holding surface 34 from. The holding element 33 or 33z holds over the Support on the suction module holding surface 34, the suction module 6 in Holding direction 30 against the cylinder head 2 of the internal combustion engine 4th

Figures 10 and 11 show the internal combustion engine 4 and the suction module 6 in the fully assembled state. To do that To detach suction module 6 from cylinder head 2, the holding element for example with the locking device right (based on FIG. 11) against the closing direction 40 be operated. As a result, the first end 64a of the Security slot 64 in the area of the pin 62. In this position of the holding element 33z is the Leg 33a 'of the holding element 33z between the two Cams 72 and 72 '. In this position, the suction module 6 lifted from the cylinder head 2 against the holding direction 30 become. To reassemble the suction module 6, the holding element 33z in the position described last. Around to attach the suction module 6 to the internal combustion engine 4, is after placing the suction module 6 on the internal combustion engine 4 the holding element 33z in the closing direction 40 pushed. The leg 33a of the holding element thereby passes 33z first in the area of the slope 76 of the Cam 72. By moving the holding element 33z in the closing direction 40 the leg 33a reaches the Area of the engine holding surface connected to the engine 4 32. The holding element 33 or 33z is dimensioned such that the suction module 6 held with pretension or spring force in the holding direction 30 becomes.

In the embodiment shown in Figures 10 and 11 are the pins 62, 62 'on which the suction module holding surface 34 is located, via the suction module stop piece 70 connected to the suction module 6. It is possible to dispense with the suction module stop piece 70 and to attach the pins 62, 62 'directly to the suction module 6.

In a further modification of that in FIGS. 10 and 11 illustrated embodiment, it is possible to Pins 62, 62 'not with the suction module 6, but with the To connect internal combustion engine 4. In this case not the suction module holding surface 34 on the pins 62, 62 ', but the side of the side facing in the holding direction 30 Pins serves as the engine support surface 32, and the Suction module holding surface 34 can, for example, as in the Figure 2 shown to be connected to the suction module 6.

FIG. 12 shows a further preferred embodiment which has been selected and is very advantageous.

As in FIG. 1, only part is shown in FIG of the cylinder head 2 shown and the suction module 6 is a Section shown cut.

In the internal combustion engine 4 or in the cylinder head 2 is a 80m nut thread provided. In the nut thread is 80m a bolt 80 or a stud bolt screwed in. The bolt 80 is connected to the internal combustion engine 4. The bolt 80 serves as a stop piece 66 in this embodiment, also called engine stop 66, about which the engine holding surface 32 with the Internal combustion engine 4 is connected. Like the embodiment shows, the bolt 80 is detachable in the cylinder head 2 screwed in. The bolt 80 can also in other ways, in particular also permanently connected to the internal combustion engine 4 be. To remove the suction module 6 from the internal combustion engine 4 is a release of the bolt 80 from the cylinder head 2 not required.

The bolt 80 can also be used to center the Suction module 6 or the suction pipe 8 compared to the Internal combustion engine 4 serve.

FIG. 13 shows a view in the direction of arrow XIII entered in FIG. 12.

As FIGS. 12 and 13 show, there are several bolts 80, 80 ', 80' ', 80' '' provided. Between the one provided on the pin 80 Engine holding surface 32 (Fig. 12) and the on the flange 14 provided suction module holding surface 34 There is a holding element on each pin 80, 80 ', 80' ', 80' '' 33, 33 ', 33' ', 33' ''.

FIG. 14 shows an example of a detail from FIG. 12 with a changed scale.

As FIG. 14 shows, the bolt 80 can be of various types Areas are divided, d. H. the bolt 80 is in essentially from a screw thread 80a, a shaft 80b, a recess 80c and a bolt head 80d.

At the transition from the recess 80c to the bolt head 80d one against the cylinder head 2, d. H. towards the Holding direction 30 facing end face formed on the the engine holding surface 32 is located. At the top (refer to Fig. 14) of the flange 14, i. H. opposite facing the holding direction 30, the suction module holding surface is located 34, also called counter-holding surface 34. The Holding element 33 (Fig. 14) is supported on the one hand on the Internal combustion engine holding surface 32 and on the other Suction module holding surface 34. The holding element 33 has one curved shape, which is somewhat elastic when installed is pressed flat so that the suction module 6 in the holding direction 30 with elastic preload or with spring force against the Internal combustion engine 4 is held.

FIG. 14 shows the holding element 33 in the fully assembled state Status. Based on this drawn position, that can Holding element 33 against the closing direction 40 to the left (related to Figure 14). This will loosen the preload and the suction module 6 can be from the cylinder head 2 the internal combustion engine 4 are lifted off.

By moving the holding element 33 in the closing direction 40 the holding member 33 between the engine holding surface 32 and the suction module holding surface 34 is clamped and brought into the position shown in FIG.

So that the holding element even with high shaking stress 33 not unintentionally against the closing direction 40 slips away, is on the holding element 33 in addition the projection 78 provided. FIG. 14 shows the holding element 33 with the projection 78. FIG. 12 shows the holding element 33 without the lead. The one in FIG. 14 and in the following Projection 78 shown is part of the Fuse 78a and has the same function that already used of Figures 7a and 7b has been explained.

15 and 16 , the holding element 33 is shown separately. FIG. 16 shows a view in the direction of the arrow XVI shown in FIG. 15. FIG. 15 shows a cross section along the section plane XV entered in FIG. 16.

It can be seen in FIG. 15 that the holding element 33 is curved is. The total thickness of the holding member 33 including the Curvature is greater than the distance between the engine holding surface 32 and the suction module holding surface 34, see above that in the assembled state in the holding element 33 an elastic Preload or spring force arises and the suction module 6 with Prestress or with spring force in the holding direction 30 against the internal combustion engine 4 is tensioned.

The invention is exemplified as in FIG executed, then must for assembly and disassembly of the holding elements 33, 33 ', 33' ', 33' '' of each of the holding elements 33, 33 ', 33' ', 33' '' per se to the corresponding Be brought. But it is also possible to have several Holding elements 33 to form a coherent holding element 33z summarize as the one described below Embodiment shows.

FIG. 17 shows another selected, particularly advantageous exemplary embodiment.

In FIG. 17, the holding element 33z is designed such that the holding element 33z in the assembled state on several Engine holding surfaces 32, 32 'and on several suction module holding surfaces 34, 34 'supports.

Possibly. can be in one place or in several places on the holding element 33z the projection 78 may be provided, which is attached in this way is that the fuse 78a is created and that in assembled state, the holding element 33z not unintentionally moves against the closing direction 40.

The holding element 33z can be designed so that a only holding element 33z on two bolts 80, 80 'or supports more than two bolts. The holding element 33z can but also be designed so that the holding element 33z supported on all existing bolts.

FIGS. 18 and 19 show, by way of example, the holding element 33z, which is designed, for example, so that the support can be provided on the internal combustion engine 4 by means of four bolts. FIG. 18 shows the holding element 33z in a side view, and FIG. 19 shows the holding element 33z in a top view.

FIG. 20 shows another particularly selected, advantageous exemplary embodiment.

FIG. 20 shows an end view of the suction module 6 with the intake manifold 8, and part of the cylinder head 2 of the internal combustion engine 4. The area around the Fastening means 10 is shown in section. The Section line is designated by XX in FIG.

FIG. 21 shows a side view in the direction of arrow XXI shown in FIG. 20.

FIG. 22 shows a detail from FIG. 20. For the sake of clarity, the area around the holding element 33 in FIG. 22 is shown again with a changed scale.

FIG. 22 shows the holding element 33 in the fully assembled state Status.

FIG. 23 shows the holding element 33 while the suction module 6 is being attached to the cylinder head 2 of the internal combustion engine 4, shortly before the suction module 6 reaches the end position.

FIG. 24 shows the holding element 33 as a detail in a top view. Referring to FIG. 22, FIG. 24 shows a view from above of the holding element 33.

In order to facilitate the description of the holding element 33, is the holding element 33 subsequently in an area a lower leg 33g, a bridge 33h and one upper leg 33i divided (Fig. 22). At the bottom Leg 33g is a hole 33k. On the upper leg 33i is a holding tab 33m and a securing tab 33n intended. Several can optionally be on each leg 33i Straps 33m and / or 33n can be provided.

In this embodiment, the pin 80 is in the Screwed in cylinder head 2. The bolt 80 serves as that stop 66 already mentioned, also internal combustion engine stop 66 called, on which in the holding direction 30 pointing holding surface 32 or engine holding surface 32 is provided. The engine holding surface 32 is located itself on the underside of the bolt head 80d. The bolt 80 can, for example, as described with reference to FIG. 14 be designed. The bolt 80 can also, such as. B. shown in Figure 20, a commercially available screw.

The diameter of the hole 33k is smaller than the diameter the bolt head 80d. With the bolt 80 it will Holding element 33 held on the internal combustion engine 4. As FIG. 22 shows, the holding element 33 is with the bolt 80 held so that the holding element 33 in the area of the bolt 80 is somewhat pivotable. Due to the swiveling of the holding element 33, the holding element 33 at the Assembly of the suction module 6 to the internal combustion engine 4 is not or only slightly bent. The same applies also when disassembling the suction module 6 from the internal combustion engine 4. But it is also possible, the embodiment to modify so that the lower leg 33g of the Holding element 33 by means of the screw or with the help of Bolt 80 with the cylinder head 2 of the internal combustion engine 4th is screwed tightly. By suitable Sizing and choice of materials can be ensured that occurs during assembly or disassembly Bending of the holding element 33 does not cause damage of the material leads.

The underside of the bolt head pointing in the holding direction 30 80d serves as the engine holding surface 32 on which the holding element 33 with its lower leg 33g supports. On the suction module 6 there is a cross to the holding direction 30 extending or slightly opposite to the holding direction 30 inclined surface, which serves as a counter surface 34, too Called suction module holding surface 34, serves. The holding strap 33m of the holding element 33 presses on the suction module holding surface 34 in the holding direction 30 (Fig. 22).

There is a holding edge in the area of the suction module holding surface 34 37b and on the securing tab 33n is a retaining lug 38b provided (Fig. 22). The holding edge 37b and the holding lug 38b are coordinated so that in the assembled State these two parts 37b, 38b interlock and serve as fuse 36. The fuse 36 ensures that even with high shaking stress, the holding element 33 cannot slide off the suction module holding surface 34.

To make disassembly easier, for example Securing tab 33n of the holding element 33 preferably so are formed that between the securing tab 33n and the suction module holding surface 34 of the suction module 6 Gap arises so that with a simple tool the fuse 36 released and the upper leg 33i from Suction module 6 can be levered off.

An assembly aid 82 is shown in FIGS. 20, 22 and 23 shown. For this purpose, the suction module 6 is located on the flange 14 a slope 82a. The slope 82a belongs to the assembly aid 82. The slope 82a is 30 µm from the holding direction about 10 ° to 70 ° inclined. When mounting the Suction module 6 comes to the engine 4 just before the suction module 6 reaches the intended end position End of the upper leg 33i facing away from the bridge 33h Touch with the slope 82a. This will cause more Movement of the suction module 6 in the holding direction 30 of the upper one Leg 33i moved to the side (refer to Fig. 23 after Left). As soon as the end of the upper end facing away from the bridge 33h Leg 33i the rounded edge between the slope 82a and has exceeded the suction module holding surface 34, snaps the upper leg 33i in its holding position (based on Fig. 23 to the right). As a result, the retaining tab 33m comes in Active engagement with the suction module holding surface 34, with which one Pre-fixation of the suction module 6 is achieved. With a the holding element 33 becomes a suitable closing device moved in the closing direction 40 (Fig. 23) until the retaining lug 38b is in operative engagement with the holding edge 37b. Through this Postponement is between the internal combustion engine 4th and the suction module 6 required holding force reached.

Figure 21 shows that the holding element with several Retaining tabs can be provided. In Figure 21 is this coherent holding element with the reference symbol Designated 33z. The coherent holding element 33z supports itself on a plurality of engine holding surfaces 32 and a plurality of suction module holding surfaces 34.

Figures 25 and 26 show a preferred advantageous embodiment of the holding element 33z.

FIG. 25 shows a top view with a view of the upper one Leg 33i (based on Fig. 22, view from above), and the FIG. 26 shows a bottom view with a view of the lower one Leg 33g (based on Fig. 22, view from below).

In the embodiment of the Holding element 33z are two holes 33k for two bolts 80 intended. This holding element 33z has two lower ones Leg 33g and two upper legs 33i with a total of three Holding straps 33m and two securing straps 33n. This is exemplary. The continuous holding element 33z can also a smaller or larger number of upper and lower ones Include legs 33g, 33i or tabs 33m or 33n.

If necessary, a slot 33p can be provided (Fig. 25, 26). The slot 33p runs away from the bridge 33h End of the lower leg 33g to the hole 33k. With the slit 33p can the holding element 33 or 33z from the internal combustion engine 4 removed or assembled to the internal combustion engine 4 without completely unscrewing the bolt 80 must become. So that the holding element 33 or 33z cannot slip unintentionally, it may be advisable to To choose slot 33p very slightly smaller than that Diameter of the pin 80 in the area of the engine holding surface 32.

In the illustrated embodiments, the Engine holding surface 32 and the suction module holding surface 34 substantially transverse to the holding direction 30. It is but also possible to face the two surfaces 32 and 34 to position the holding direction 30 somewhat obliquely and / or Surfaces 32 and 34 to be curved or curved, provided that slipping of the holding element 33 or 33z by one Stop or by the fuse 36 or 78a described is prevented.

By simple measures, the holding element 33 or 33z so that it is viewed in the holding direction 30 is highly elastic. A particularly high elasticity you get especially if you have the legs 33a, 33c, 33g, 33i or the bridge 33b or 33h as long as possible executes and / or can run curved or curved. Due to the high elasticity of the holding element 33 or 33z ensures that even with signs of settlement in the area the attachment of the suction module 6 to the internal combustion engine 4, the preload or spring force even with high vibration stress preserved.

In contrast to a construction in which the suction module 6 with the help of one fastening screw or several Fastening screws attached to the internal combustion engine 4 should be, it is not with our invention required that when assembling or disassembling the suction module 6 with a tool directly on the screw head Fastening screw must be attacked. In the present Subject of the invention, the holding element 33 or 33z can be designed so that by a linear or at most somewhat curved displacement or slight pivoting of the holding element 33 or 33z Assembly or disassembly can be done.

Through the linear or essentially linear displacement of the holding element 33 or 33z it is with very poor accessibility possible, in addition to the holding element 33 or 33z an extension extending transversely to the holding direction 30 to attach, for example with light Hammer blows or with the mentioned locking device Holding element 33 or 33z in the closing direction 40 (assembly) or moved against the closing direction 40 (disassembly) can be.

Using the present exemplary embodiments, it is described that how the holding element 33 or 33z on the Suction module holding surface 34 on the suction module 6 and over the internal combustion engine holding surface 32 is supported on the internal combustion engine 4. It is possible the type of support described compared to the suction module 6 instead of the internal combustion engine 4 to be provided and the opposite to the Internal combustion engine 4 support compared to the Provide suction module 6. That is, the nature of the two described Outriggers are interchanged.

FIGS. 27 and 28 show further exemplary embodiments, the section shown being selected such that differently designed holding elements 33 can be shown in the cross sections. In order to simplify the description of the exemplary embodiments, a reference symbol indicating a part on the left in the picture is given the suffix "L". Correspondingly, the reference numerals on the right-hand side are given the addition "r". The left holding element is thus designated 33L and the right holding element is designated 33r. It is the same with the surfaces 32 and 34. The holding surface 32, also called the engine holding surface 32, is given the reference symbol 32L on the left and 32r on the right. The counter holding surface 34, also called the suction module holding surface 34, is called 34L on the left and 34r on the right. Accordingly, in FIG. 28, the holding directions relating to the left part of the image are given the reference symbol 30L and the holding directions relating to the right part of the image are given the reference symbol 30r. In FIGS. 27 and 28, the fuse 36 shown in FIG. 2, for example, has been omitted for the sake of clarity.

In the embodiment shown in Figure 27 the flange surfaces 16 and 18 are not parallel to the Surfaces 32L, 32r, 34L, 34r. Assuming that between the holding element 33L or 33r and the corresponding surfaces 32L, 32r, 34L, 34r the friction can be neglected, the legs of the holding elements 33L, 33r act vertically the corresponding areas 32L, 32r, 34L, 34r. Because the holding surfaces 32L, 32r and the counter surfaces 34L, 34r in parallel to each other, it follows that the holding direction 30 for both holding elements 33L, 33r in the same direction runs, which in Figure 27 with the reference numeral 30 provided arrow is indicated.

Since the holding direction 30 is not perpendicular to the flange surfaces 16, 18 runs, the holding elements 33L, 33r in the area of the flange surfaces 16, 18 and the projection 22 vectorial force distribution. A vectorial component the force acts between the two flange surfaces 16 and 18 and a component of the force acts in the area of leadership 24 between the recess 20 and the projection 22.

Depending on the point of view, in the case of FIG illustrated embodiment different holding directions on. In order to simplify the description these holding directions on the left side with 30L1, 30L2, 30L3, 30L4 and on the right are the holding directions designated 30r1 to 30r6.

Neglecting the friction, the lower leg works of the left holding element 33L perpendicular to the oblique standing holding surface 32L. This direction is in FIG. 28 indicated by an arrow with the reference symbol 30L1 and is referred to as the holding direction 30L1. In the 28 there is a parallel to the flange surfaces 16, 18th extending counter-holding surface 34L 'and an inclined Counter surface 34L ''. If the The holding element 33L acts vertically on the counter holding surface 34L 'in the direction of arrow 30L2 and on the Counter surface 34L '' in the direction of arrow 30L3. The Force towards 30L2 and the force towards 30L3 can vectorial to an effective force in the direction of the arrow 30L4 can be assembled. The arrow 30L4 and the force in Direction 30L1 are in a line. The towards the arrow 30L4 acting, vectorial, effective Force can be viewed as if this force is on a replacing the two counter surfaces 34L 'and 34L' ' imaginary, effective counter surface 34L "'would act. The imaginary, effective counter surface 34L '' 'is in the Figure 28 symbolically indicated with dashed lines. There the flange surfaces 16, 18 are not perpendicular to the direction 30L1 or 30L4 run, causes the holding element 33L in the Figure 28 that the projection 22 is not only on the Flange surface 16, but also at right angles to the recess 20 supports.

The holding element is supported on the right side in FIG 33r on a holding surface 32r 'and on a holding surface 32r ''. On the side of the suction module 6 is supported the holding element 33r on a counter-holding surface 34r 'and on a counter holding surface 34r ''. The directions of the forces of the holding element 33r, which on the surfaces 32r ', 32r ", 34r' 34r '' are shown in FIG. 28 by four arrows 30r1, 30r2, 30r3, 30r4 indicated symbolically. The force towards 30r1 can be vectorial in a force parallel to the direction 30r2 and broken down into a force perpendicular to the direction 30r2 become. This latter, vectorially decomposed, effective Force is in Figure 28 by one with the reference numeral 30r5 shown symbolic arrow. On the side of the suction module 6, the force in the direction 30r4 by vectorial decomposition in the direction of the arrow 30r6 directed effective force can be disassembled. The direction the effective force 30r6 is in a line with the direction the arrow of effective force 30r5. The force component in the direction of arrow 30r5 acts on one imaginary perpendicular to it, in the figure 28 by effective dashed area indicated by a broken line 32r '' '. The force acts in the same way arrow 30r6 to a dashed line, imaginary, effective counter surface 34r "'.

It can be said that, at least by appropriate Consideration taking into account vectorial Forces and effective replacement areas, even with the one in the Figure 28 illustrated embodiment, the holding element 33L or 33r in the assembled state on the one hand on one of the Internal combustion engine 4 assigned (real or imaginary) effective Holding surface 32L or 32r '' 'and on the other hand on one assigned to the suction module 6 or the suction pipe 8 (real or acts on the imaginary) counter surface 34L '' 'or 34r' '', where the (real or imaginary) effective counter surface 34L '' 'or 34r "' opposite to (real or imaginary) effective holding surface 32L or 32r "'directed is. The (real or imaginary) are effective accordingly Forces exerted by the holding element 33L or 33r on the Surfaces act in opposite directions.

In the above considerations, it was assumed that between the holding element 33, 33L, 33r and the corresponding Areas on which the holding element 33, 33L, 33r supports, no friction occurs. When Friction changes the directions of the corresponding Forces slightly, depending on the size of the frictional force. Still it is Direction of the forces at least essentially as based on the Embodiments found.

Also in the embodiment shown in FIG. 28 can the holding surfaces 32L, 32r ', 32r' 'or the counter surfaces 34L ', 34L' ', 34r', 34r '' on protruding There are cams, similar to those in Figures 6, 7a, 7b shown cams 72, 72 ', 72' ', 72' ''. During the Assembly or disassembly is the holding element 33L, 33r perpendicular to the sectional plane shown in FIG essentially shifted linearly. This allows the holding element 33L, 33r also on inaccessible for fastening screws Positions are to be provided.

As with the exemplary embodiments illustrated in FIGS. 27 and 28 the holding surface 32 or engine holding surface 32 and the counter surface 34 or Suction module holding surface 34 not parallel to each other and not must run parallel to the flange surfaces 16, 18, can also be used in all other exemplary embodiments the holding surface 32 and the counter holding surface 34 are inclined to one another and run inclined to the flange surfaces 16, 18.

In the preferred embodiments selected, this is Holding element 33, 33z elastic, preferably elastic relatively soft and the flanges 12, 14 are relatively stiff. It should be noted that the invention can also be modified in this way can that the holding element 33, 33z relatively stiff is executed, and instead is or are the holding surface 32 and / or the counter holding surface 34 elastically relative very yielding. This modification can be done for example achieved that the flange 12 and / or Flange 14 and / or the stop piece 66 and / or the counter stop piece 70 and / or the pin 80 elastically relative is or are soft

Claims (16)

1. Combustion engine with intake module or intake pipe, the intake module or intake pipe being fixed to the engine by a fixing means (10) in a holding direction (30) and at least one holding element (33, 33z) being provided as the fixing means (10), the said holding element being under resilient force, in the fitted state, and being supported on the one hand on at least one holding surface (32), which is assigned to the engine (4) and faces essentially in the direction of the holding direction (30), and on the other hand on at least one counter-holding surface (34), which is assigned to the intake module (6) or intake pipe and faces essentially counter to the holding direction (30), characterized in that the resilient force is produced by a displacement of the holding element (33, 33z) directed essentially transversely with respect to the holding direction (30).
2. Combustion engine according to Claim 1, characterized in that the holding element (33, 33z) is supported on a plurality of holding surfaces (32) assigned to the engine (4).
3. Combustion engine according to Claim 1 or 2, characterized in that the holding element (33, 33z) is supported on a plurality of counter-holding surfaces (34) assigned to the intake module (6) or intake pipe.
4. Combustion engine according to one of the preceding claims, characterized in that the holding element (33, 33z) is a flexible element.
5. Combustion engine according to one of the preceding claims, characterized in that the resilient force is produced by an essentially linear displacement of the holding element (33, 33z).
6. Combustion engine according to one of the preceding claims, characterized in that the holding element (33, 33z) has, at least in a sub-region, an approximately U-shaped or clip-like cross-section.
7. Combustion engine according to one of the preceding claims, characterized in that, with the intake module (6) or intake pipe removed from the engine (4), the holding element (33, 33z) is coupled to the intake module (6) or intake pipe.
8. Combustion engine according to one of Claims 1 to 6, characterized in that, with the intake module (6) or intake pipe removed from the engine (4), the holding element (33, 32z) is coupled to the engine (4).
9. Combustion engine according to one of the preceding claims, characterized in that the holding surface (32) is provided on a stop piece (66) assigned to the engine (4).
10. Combustion engine according to Claim 9, characterized in that the stop piece (66) is a bolt (80).
11. Combustion engine according to one of the preceding claims, characterized in that the counter-holding surface (34) is provided on a counter-stop piece (70) assigned to the intake module (6) or intake pipe.
12. Combustion engine according to one of the preceding claims, characterized in that at least one slope (76) assigned to the engine (4) is provided, fitted in such a way that, with the intake module (6) or intake pipe mounted on the engine (4), the resilient force can be produced by a displacement of the holding element (33, 33z), preferably by an essentially linear displacement of the holding element (33, 33z).
13. Combustion engine according to one of the preceding claims, characterized in that at least one slope (76) assigned to the intake module (6) or intake pipe is provided, fitted in such a way that, with the intake module (6) or intake pipe mounted on the engine (4), the resilient force can be produced by a displacement of the holding element (33, 33z), preferably by an essentially linear displacement of the holding element (33, 33z).
14. Combustion engine according to one of the preceding claims, characterized in that at least one slope (76) assigned to the holding element (33, 33z) or intake pipe is provided, fitted in such a way that, with the intake module (6) or intake pipe mounted on the engine (4), the resilient force can be produced by a displacement of the holding element (33, 33z), preferably by an essentially linear displacement of the holding element (33, 33z).
15. Method of fixing an intake module or intake pipe to a combustion engine, the intake module or intake pipe being held against the engine after fixing has taken place by a fixing means (10) in a holding direction (30) and there being provided at least one holding surface (32), which is assigned to the engine (4) and faces essentially in the direction of the holding direction (30), and at least one counter-holding surface (34), which is assigned to the intake module (6) or intake pipe and faces essentially counter to the holding direction (30), the fixing means (10) comprising at least one holding element (33, 33z), which for fixing the intake module (6) or intake pipe to the engine (4) is moved essentially transversely with respect to the holding direction (30).
16. Method according to Claim 15, characterized in that the holding element (33, 33z) is moved essentially linearly.

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