MXPA99002519A - Ultralight, multifunctional sound-insulating kit - Google Patents

Abstract

This invention concerns a kit (41) for reducing noise in motor vehicles and comprises at least one flat vehicle part (11) with a sound-insulating assembly package (42) consisting of several layers and an at least partly interlaying air layer (25). This assembly package (42) has at least one porous cushioning layer (13), a microporous reinforcing layer (14) which is lightweight, stiff and openly porous, an air flow resistance between Rt=500Nsm-3 and Rt=2,500Nsm-3, and a surface area of mF=0.3kg/m2 to mF=2.0kg/m2. The reinforcing layer (14) has a stiffness of B=0.05Nm to B=10.5Nm. This permits replacing the weight of classic spring-mass-systems for noise reduction in vehicles with a system at least 50%lighter. In addition to the dampening effect on oscillations, this kit (41) also quite effectively absorbs sound and provides thermal insulation. Preferably, this multifunctional, ultralight kit (41) is used to insulate the floor or fire wall, or as door lining or roof inner lining.

Description

Isolation equipment for sound, multifunctional ultralight Background of the Invention The present invention relates to a multifunctional device for noise reduction and heat insulation in vehicles, according to the preamble of claim 1.

Parts of the vehicle with large areas, such as floor plates, roof sheets, luggage racks, end surfaces or doors and side covers tend to deform, vibrate and oscillate on the trip because of their inherent low stabilities. This behavior is conventionally counteracted when mounting cushioning material, in particular heavy bitumen layers. In order to reduce the transmission of the noises that travel inside the vehicle's interior, in the automotive industry, it has been applying insulating assemblies for a long time.

REF .: 29432 sound, multilayer. In particular by means of these sound insulating assemblies, the noise of the engine of the vehicle of the gearbox and the auxiliary units, of the exhaust systems but also effectively isolate the noises of the wind and the rims. These sound-insulating assemblies are conceived as elastic mass systems and all comprise a heavy, hermetic layer coupled to a layer with elastic movement in order to dampen the vibrations of automobile parts with large areas and isolate airborne noise.

For example, a sound insulating package is described in EP-034348 and essentially comprises a layer of soft elastic foam material which covers the parts of the body of the car capable of oscillating this acts as the mass system elastic, a layer of the same material almost compact, impermeable to air and consolidated, which acts as the mass of the system of elastic mass, where this consolidation is incorporated in a form of foam cut or sheared, as well as a cover layer or Decorative carpet arranged near this. By means of this construction the weight of the heavy layer could be reduced up to 40% and also the weight of the sound insulation system as a whole could be reduced with respect to the known elastic mass systems, but nevertheless in the cost of the acoustic effectiveness do not.

In the patent EP-0'255'332 an sound insulating package is exposed which, with the help of a semi-flexible transmitting layer, with a closed-pressure mode, is tensioned against the floor of the vehicle. With this transmitting layer is pressed a system of elastic mass of a layer of foam that absorbs sound, flexible and a heavy viscoelastic layer, with closed pores, filled with bitumen) against the roof of the vehicle. By means of the non-positive connection of the heavy layer with the roof of the vehicle, the vibrations thereof are better cushioned and the heavy layer does not need to cover completely the surface to a great extent.

BRIEF DESCRIPTION OF THE INVENTION Generally, the elastic mass arrangements however, originate the start of the resonance in the isolation of the sound, which usually remains in the frequency range of the arrangements of the smaller motors and are particularly undesirable. This phenomenon as a rule prohibits an extremely light construction.

The general desire of the automotive industry to reduce the weight of vehicles. As a result, parts of the body of the cars becoming thinner and lighter are applied, which causes considerable acoustic disadvantages. These demands on sound insulation assemblies are significantly increased by the use of body parts for lightweight vehicles.

It is therefore an object of the invention to provide an ultra-light equipment which together with lightweight automobile body parts, for example of aluminum or plastic, have no loss of acoustic effectiveness.

Is provided in particular an insulating sound equipment which is more than 50? > lighter than the insulating sound assemblies and also has good heat insulating properties.

According to the invention this objective is generally achieved by a device with characteristics of claim 1 and is achieved particularly in the air-impermeable heavy layer with elastic mass systems is replaced by a layer of relatively thin and microporous rigid fiber, or a layer composed of fiber / foam. This porous micrc fiber layer has open pores and has a relatively high resistance to airflow. Essentially for the solution of the exposed objective is the formation of an air layer in the sound absorbing equipment, it is the air layer that remains between the part of the body area of the automobile and the other layers. As a basic result the weight of the insulating mechanism with elastic mass systems is reduced in favor of improved sound absorption. The effectiveness of the equipment according to the invention thus involves an optimal combination of sound insulation and absorption: The considerable increase in the absorption coefficients achieved according to the invention originate the fact that this equipment has an extremely light construction and also together with lightweight car body parts have no reduction in acoustic effectiveness. Furthermore, with the equipment according to the invention surprisingly it has been found that there is also a considerable improvement of the insulation in the region where the start of the resonance normally occurs.

In the first form of the embodiment, the multifunctional device according to the invention comprises essentially an elastic, open-pored, soft-pore absorbing layer that covers the parts of the automobile capable of oscillating, this layer consisting of foam or sheared fiber, a rigid microporous layer. and lightweight, in particular a rigidly pressed fiber layer or a fiber / foam composite layer, as well as a porous coating layer or carpet or protective layer arranged thereon. All these layers could be connected one by one mechanically (sewn), or by means of partial air permeable adhesives. In another embodiment of this form of the embodiment, the equipment according to the invention on the sides of the automobile body comprises a light buffer layer which is applied in a partially or completely coated manner, this preferably having a stamped surface in accordance with the invention. to EP-0 474 593 and is applied to the laminate of the automobile body. In flat regions of the body of the automobile, a lightweight, lightweight bitumen shock absorbing layer and a thin foil of aluminum or paper reinforced with tension-resistant fiber could be applied. This conventionally adheres to the plate.

In addition, forms of the preferred embodiment are specified in the dependent claims of the present application.

By means of the acoustic optimization of the open pore layer with soft elastic combined with the same way open pore layer with soft elastic or the composite layer of fiber / foam arranged on it, one obtains a) an insulator to the sound without causing resonance , b) an absorption of the sound in the interior of the decor or carpet, which is easily effective in the low frequency region, c) a heat insulator which is advantageous with vehicles with low fuel consumption and d) a reduction considerable in the weight of more than 50o compared to the construction of classic elastic mass with vehicles with a body of the steel car, and simultaneously with an acoustic improvement on the effectiveness.

Brief Description of the Drawings Subsequently the invention is explained in more detail by means of some examples of the modality and with the help of figures. With this they show: Fig a classic construction of the floor group; Fig. 2 the course of the absorption coefficients as a function of the frequency of the floor group according to Fig. 1; Fig. 3 the course of the insulation as a function of the frequency of the floor group according to Fig. 1; _a Fig. 4: the principle of the construction of the equipment according to the invention; Fig. 5 a device according to the invention for the insulation of the floor or internal final wall coating; Fig the course of the absorption coefficient as a function of the frequency of the equipment according to Figure 5; , a Fig the absorption absorption course as a function of the frequency of the equipment according to Figure 5; Fig. A construction through an inner lining of the floor according to the invention; Üa F_, g. a construction through a door covering according to the invention; Fig. 10: a construction through an outer end wall adhered according to the invention; Fig. 11: a construction through an outer end wall applied according to the invention; Description of the invention The conventional floor assembly 1 comprises a sound insulation package 2 constructed of several layers, which is fastened to a plate, for example, the part of the body area of the automobile 3. With these parts of the body of the automobile conventional vehicles are manufactured of an approximate thickness of 0.8 mm of steel sheet, which has a weight per area of approximately 6.32 kg / m. "On this part of the body of the automobile 3 a shock absorber cap 4 is mounted, as a rule a layer of bitumen of thickness of 2.2 mm approximately, cor-weight per surface of 3.5 kg / m ". approximately. High-frequency oscillations are essentially damped with this damping layer 4. On this, buffer layer as a rule a dough system is applied freely so that between the damping layer 4 and the elastic mass system rises a thin layer of air of approximately 0.2 mm in thickness 5. The elastic mass system comprises a layer of fiber 6 with a thickness of approximately 15 mm with a spatial weight of 70 kg / m "". approximately or a weight of the area of 1.05 kg / m-. approximately. Instead of this fiber layer 6 similarly heavy elastic foam layers are also used. Connected thereto is a heavy air-impermeable layer 7, approximately 2 mm thick with an area weight of approximately 4.0 kg / pr in which in turn a carpet 8 of approximately 5.0 mm thickness of approximately 0.6 kg is deposited. / pr. of surface weight. This conventional floor assembly thus comprises a total surface weight of approximately 15. "kg / m- of which the weight of the area of the sound insulating package 2 constitutes a part of approximately 9.15 kg / m".

The curve 9 shown in Figure 2 shows the behavior of the absorption coefficients as a function of the frequency of this floor assembly 1. From this it can be clearly recognized that this sound-insulating package in the 200 Hz region comprises a marked resonance absorption, and in the region of approximately 500 Hz it shows a clearly worse absorption which with an increase in frequency improves insignificantly. This negligible increase in absorption is caused only by the properties of the carpet.

The course of the frequency 10 of the insulation, which is represented in Figure 3 and which corresponds to this assembly of floor 1 clearly illustrates the isolation of the high-frequency sound, and shows an initiation of the insulation in the region of 200 Hz which it is characteristic of all elastic mass systems.

With the use of the aluminum sheet of approximately li mm thickness instead of the steel sheet of approximately 0.8 mm thickness as a part of the car body 3 with these conventional insulation systems the complete illustration was worsened by approximately 6 dB and the resonance of the insulator was started and the absorption of the resonance shifted to some higher frequencies in the region around 250 Hz. This is a result of halving the mass with the use of aluminum instead of steel .

The construction principle of the equipment 41 according to the invention shown in Figure 4 essentially comprises a part of the area of the vehicle 11 and an assembly pack 42 that holds the vehicle. This assembly equipment 42 comprises several layers and of necessity a porous elastic layer 13 and a rigid microporous layer 14. The porous elastic layer 13 is preferably formed of a foam layer with open pores. The microporous rigid layer preferably consists of an open-pore fiber layer or fiber / foam composite layer which has a total air flow resistance of R: = 500 Nsm "ja R. = 2500 Nsm" ", in particular from R- = 900 Nsm "" 'at R- = 2000 Nsm ~, and a mass per area of mF = 0.3 kg / m-. To mF = 2.0 kg / m "., In particular of mF = 0.5 kg / m" a - = 1.6 kg / m ~ To assist, other layers 21 and 23 can be deposited Essentially for the acoustic effectiveness of the multifunctional device 41 is an air layer 25 between the assembly pack 42 and the part of the vehicle area 11 In order to further improve this acoustic effectiveness from B = 0.005 Nm to B = 10.5 Nm, in particular from B = 0.025 Nm to B = 6.0 Nm.

The ultra light equipment according to the invention, according to Figure 5, is particularly stable for the construction of the floor insulation or the final internal coating of the wall. This comprises a part of the body of the aluminum car with approximately 1.1 m. of thickness, in which a light damping layer 12 is applied, for example a damping layer SDL, which forms an air layer 25. Such damping layers of SDL are known and as a rule have a surface pattern according to Patent EP 0 474 593 and a composition of bituminous material. These are applied with the pattern on the laminate and are rigidly connected to the soft foam system. The effective density of this buffer layer 12 is p = 1100 kg / m "'In the present embodiment example, a buffer layer of approximately 2.0 mm thickness with an area weight of approximately 2.4 kg / pr is used. on this is an approximately 25 mm thick layer of molded foam 13 with a spatial weight of approximately 20 kg / pr ", or with a weight per area of approximately 0.4 kg / irr at 1.75 kg / m-. This molded foam layer 13 is in particular a layer of thermoformed foam and is open pore and is connected to a rigid, microporous fiber layer 14 of approximately 1.5 mm. to 5.0 mm. of thickness of approximately 0.6 kg / m "to 1.6 kg / m". of surface weight. Also several layers of damping layers with bitumen, ultralight are suitable as damping layer, which for example comprises a thin sheet of aluminum or fiber-reinforced plastic paper or bitumen-free damping materials, for example EPDM or foam molded with an effective space weight of approximately 40 kg / m "". The microporous fiber layer 14 is of the type such that it has a total resistance to air flow of R- = 500 Nsm "at R- = 2500 Nsm" "', in particular from R- = 900 NsirT to R. = 2000 Nsm "" ', and a mass per area of mr = 0.3 kg / m ". a mF = 2.0 kg / m "., in particular of m- = 0.5 kg / m". a m- = 1.6 kg / m "and a bending stiffness of B = 0.005 Nm to B = 10.5 Nm, in particular from B = 0.025 Nm to B = 6.0 Nm. This microporosity and rigidity are essential for the absorption capacity of the total assembly packaging and could be achieved by means of a suitable choice in various materials.With the application as an insulator of the floor a decorated carpet or layer 15 is connected to this layer of rigid, microporous fiber 15 on the passenger side of the vehicle and example of the modality has a thickness of approximately 5 mm or an area weight of approximately 0.6 kg / m ". The assembly package 42 according to the invention thus weighs only approximately 4.1 kg / m "and allows the weight of the entire floor assembly to be reduced by approximately 15.47 kg / m". at about ~ .C7 kg / m. "With the application of this equipment 41 as an interior finish wall, the decoration layer or carpet layer could be made separately.

The line of the dependent frequency 16 of the absorption coefficients shown in Figure 6 clearly illustrate the line of the special frequency for the equipment 41 according to the invention with an aluminum sheet of approximately 1.1 m. Thickness: perfect sound absorption in the medium and constant frequency range, not so great an absorption of a = 0.7 to 0.8 in the high frequency range. This is necessary to maintain the ability to understand a conversation in the vehicle.

The line 17 of the frequency-dependent isolation of the equipment 41 according to the invention, which can be reduced from Figure 7 clearly does not show any large start of resonance, as occurs with a branch of the line with the elastic mass system in the 200 Hz region.

Another application of the equipment 41 according to the invention for the insulation of an inner lining of the roof (the roof) is shown in Figure 8. This comprises a fixing layer of approximately 2 mm. of thickness 26 of a highly compressed fiber material with an area weight of approximately 0.5 kg / m. "As a subsequent layer there is a foam layer 13 of approximately 15 mm thickness with a space weight of approximately 20 kg / m" . This foam or foam layer molded according to the invention has a layer that supports a rigid layer 14, in particular a microporous fiber layer of approximately 1.5 mm. of thickness and approximately 0.4 kg / rrr "of surface weight Finish with a porous layer for decoration, soft in particular with open pore 23 of approximately 2 m in thickness or approximately 0.21 kg / m". of superficial weight this absorbs the sound and dampens the oscillation, likewise supporting the design of the ceiling. This multifunctional device according to the invention thus comprises a total thickness of approximately 24.5 mm. and a surface weight of about 1.56 kg / m "and acts in the same manner as the example of the previously described embodiment.Another embodiment is formed for the construction of an inner lining of the roof according to the invention are defined in greater detail in the dependent claims 21 to 24.

It is understood that this inner lining of the roof could also be provided with a damping layer, in particular with a foam cushion of approximately 4 mm in thickness with a surface pattern according to Patent EP 0 474 593 and with an area weight of approximately 0.15 kg / m ".

In a form of the alternative embodiment of this inner lining of the roof of the fixing layer 26 could be excluded and the mounting package 42, however would form an air layer 25, adhere directly to the part of the vehicle area 11. In this way, although the damping of the aluminum roof oscillation and the isolation of the sound is reduced, in particular, it is reduced somewhat in the rain or when traveling in tunnels, however with this one could still achieve a suficiently effective equipment. according to the invention with a thickness of approximately 18.5 mm. and an area weight of approximately 0.91 kg / m ".

The equipment 41 according to the invention could also be applied as a door covering and comprises in a form of the embodiment according to Figure 9 a multi-layer amorphous layer of approximately 2.4 mm. of thickness which consists of ultra lightweight bitumen cushion material and at least one thin aluminum sheet of approximately 0.1 mm. It is known that these multilayer shock absorbing systems adhere directly to the sheet. However, these have as a rule at least 4 kg / m "of weight The system applied according to the invention has an area weight of only 2.67 kg / m ~ with a better damping efficiency than conventional systems. Subsequent to this follows an air gap 25 of a variable thickness This could in particular be used in order to accommodate the mechanical parts of the window The current mounting package 42 is protected against moisture and contamination by a thin PU 27 sheet of 25 μm with an area weight of approximately 0.03 kg / m ". The porous elastic layer 13 and the rigid microporous layer 14 are formed according to the features of claims 26 to 29. This sequence of layers is capped on the side of the passenger space with a porous coating layer 23 of approximately 2 mm. thickness, in particular of approximately 0.21 kg / m. "Thus, this assembly package comprises an area weight of approximately 3.51 kg / m.It is understood that this assembly package 42 could only be partially mounted only in the door regions.

It is understood that this equipment 41 could also be provided with a damping layer 12 between the part of the vehicle area 11 which thus consists of ultralight shock absorber material of approximately 2.3 mm thickness, multilayer and with an area weight of approximately 2.67 kg / m ". and with at least one thin sheet of aluminum of approximately 0.1 mm or of an ultralight shock absorbing material of approximately 2.3 mm thickness, multilayer and with an area weight of approximately 2.67 kg / m ". and with at least one thin sheet of fiber reinforced plastic paper of approximately 0.1 mm. Thus the area weight of the multi-layer buffer layer is approximately 2.54 kg / pr.

The equipment 41 according to the invention can also be applied as the final coating of the outer wall, as shown in Figures 10 and 11. The mounting package used by this comprises on the side of the motor space a resistant protective layer to dirt 28, in particular a shielded protection resistant to oil and water. The microporous rigid layer 14 is accommodated between the elastic layer 13 and this protective layer, where the rigid layer consists of highly compressed fiber material with a thickness of approximately 2.5 mm. and an area weight of approximately 1.0 kg / pr. , the elastic open pore layer of the mounting package 42 consists of a thermoformed foam with a thickness of approximately 15 mm with an area weight of approximately 0.3 kg / pr. , or a molded PU foam with a thickness of approximately 15 mm with a weight area of approximately 0.6 kg / m "at 0.9 kg / m"., c a duroplastic shearing of heat-resistant fiber blend with a thickness of approximately 15 mm and with an area weight of approximately 0.7 kg / pr to 1.0 kg / pr. The protective layer on the side of the motor space comprises a thickness of 0.2 to 0.4 mm. and an area weight of 0.1 to 0.3 kg / m. "With this form of the embodiment the mounting package 42 adheres in a simple manner to the area of the part of the vehicle 11 which forms an air layer.

In another form of the embodiment of this mounting package 42 used as a final exterior coating of the wall, as shown in Figure 11, the microporous cushion layer 14 is placed between the porous elastic layer 13 and the air layer 25. Again the open-pored elastic layer of the mounting package could consist of a molded foam, a molded PU foam or a duroplastic mixed fiber shearing, and is provided on the side of the motor space with a protective layer 28. This Mounting package 42 can adhere to an area of the vehicle part 11 or just put on. In order to place on the mounting package in a stable manner, this comprises a fixing layer 26. It is understood that with these forms of the modality between the mounting package 42 and the air layer 25 a foam cushion could also be provided. , which comprises of 3 mm of thickness and a weight area of approximately 0.12 kg / m-.

The advantages of this equipment according to the invention are particularly evident with the application of the thin steel sheet or the thin aluminum sheet or an organic sheet, as is currently favorably used in the automotive industry. Another advantage of the equipment according to the invention lies in the extremely low heat conductivity of the applied porous elastic layer, which causes the fact that this equipment apart from its good acoustic effectiveness also has good heat insulation.

It is noted that in relation to that date, the best method known by the applicant to carry out the aforementioned invention is that which is clear from the present description of the invention.

Having described the invention as above, the content of the following is claimed as property.

Claims (47)

Claims

1. A multifunctional device for the reduction of noise and heat insulation in vehicles, to form a coating that absorbs sound, that isolates sound, that dampens oscillation and isolates heat, in particular an insulation of the floor or lining of the laying , final insulation of the wall, or internal reverse of the roof, with at least a part of the vehicle area and with a mounting package that reduces the noise of several layers, the assembly package comprises at least one porous elastic layer, in particular a foam layer with open pore, and where between these mounting packs and the part of the vehicle area is placed. an air layer, characterized in that ultra-light equipment is formed which is suitable for suitably combining sound insulation, sound absorption and oscillation damping, the multilayer mounting package is a heavy-layer free assembly package and comprises a rigid microporous layer, in particular an open pore fiber layer or a fiber / foam composite layer, which has R- = 500 Nsm "" at R- = 2500 Nsm "" ", in particular from R- . = 900 Nsm "5 to R-. = 2000 Nsm "" ', and a mass per area of m = 0.3 kg / m "to go = 2.0 kg / m", in particular of m = 0.5 kg / m "to mF = 1.6 kg / m" .

2. A device according to claim 1, characterized in that the rigid microporous layer has a bending stiffness of B = 0.005 N. a B = 10.5 Nm. , in particular from B = 0.025 Nm. a B = 6.0 Nm.

3. An equipment according to claims i c 2, characterized in that the assembly package is provided with a porous coating layer, in particular a decorating layer or soft carpet layer, or with a protective shearing resistant to dirt.

4. A device according to claims 1 to 3, characterized in that the porous elastic layer is placed between the air layer and the rigid porous layer.

5. A device according to claims 1 to 4, characterized in that the porous elastic layer consists of thermoformed foam of a low density of p < 30 kg / m "', in particular p < 15 kg / pr.

6. An equipment according to claims 1 to 4, characterized in that the porous elastic layer consists of molded PU foam of a low density of p < 70 kg / m "', in particular p < 45 kg / m"'.

7. An equipment according to claims 1 to 4, characterized in that the porcsa elastic layer consists of shearing of thermoplastic mixed fibers of a low density of p < 70 kg / m ', in particular p < 45 kg / m '.

8. A device according to claims 1 to 4, characterized in that the porous elastic layer consists of shearing of low density dorpellate fibers of p < 70 kg / m "", in particular p < 35 kg / m "

9. An equipment according to claims 5 to 8, characterized in that between the assembly package and the part of the vehicle area there is at least partially a buffer layer.

10. A device according to claim 9, characterized in that the damping layer has a thickness of approximately 2.2 mm and consists of an ultra-light damping material with an area weight of approximately 2.4 kg / m ", where this damping layer adheres to the of the vehicle area, and the air layer, formed between the mounting package and the damping layer by a support as an aid to the mounting package, comprises a thickness of approximately 0.2 mm., the porous elastic layer a thickness of approximately 25 mm. mm and the surface weight of approximately 0.4 kg / m ". at approximately 1.75 kg / pr., the microporous rigid layer has a thickness of 1.5 mm. to 5.0 mm. and an area weight of 0.6 kg / m "at 1.6 kg / pr.

11. A device according to claim 9, characterized in that the damping layer consists of an ultra-light, multi-layer damping material comprising at least one thin aluminum sheet of approximately 0.2 mm and having an area weight of approximately 2.94 kg / m ". ., wherein this cushion layer adheres to the part of the vehicle area, and the air layer, formed between the mounting gasket and the cushion layer by a support as an aid to the mounting package, comprises a thickness of approximately 0.2 mm, this porous elastic layer comprises a thickness of approximately 25 mm. and a surface weight of about 0.4 kg / m "to about 1.75 kg / m", this rigid microporous layer comprises a thickness of 1. 5 mm to 5.0 mm. and an area weight of 0.6 kg / m ". 1. 6 kg / m ".

12. A device according to claim 9, characterized in that the buffer layer consists of an ultra-light, multi-layer shock absorbing material comprising at least one fiber-reinforced plastic paper of approximately 0.2 mm and having an area weight of approximately 2.67 kg / m "., where this cushion layer adheres to the part of the vehicle area, and the air layer, formed between the mounting gasket and the cushion layer by a support as an aid to the mounting package, comprises a thickness of approximately 0.2 mm, this porous elastic layer comprises a thickness of approximately 25 m and a surface weight of approximately 0.4 kg / m ". At approximately 1.75 kg / m ", this rigid microporous layer comprises a thickness of 1.5 mm to 5.0 mm and an area weight of 0.6 kg / pr to i6 kg / m".

13. A device according to claim 9, characterized in that the buffer layer has a thickness of approximately 2.0 mm. and consists of an ultra-light bitumen-free EPDM buffer material having an area weight of approximately 2.4 kg / pr. and a structured surface as an aid, where this buffer layer on one of the sides adheres with this part of the vehicle area, so that the air layer formed between the buffer layer structured as an aid and the part of the area of the vehicle. vehicle at least in regions has a thickness of approximately 0.2 mm, and on the other side is subject to the porous elastic layer has a thickness of approximately 25mm. and a surface weight of approximately 0.4kg / pT. At approximately 1.75 kg / m ", this rigid microporous layer has a thickness of 1.5mm to 5.0mm and an area weight of 0.6kg / m". at 1.6 kg / m ".

14. A device according to claim 9, characterized in that the molded foam layer having a thickness of approximately 4.0 mm. with a space weight of approximately 40kg / m "or a weight area of approximately 0.2 kg / m". and a structured surface like aid, where this buffer layer on one of the sides adheres with this structured surface as an aid on the part of the vehicle area, so that the air layer formed between the structured cushion layer helps and the part of the vehicle area at least in regions has a thickness of about 0.2 mm, and on the other side is subjected to the elastic layer with open pores, this porous elastic layer has a thickness of about 25 m. and a surface weight of approximately 0.4 kg / pr. at approximately 1.75 kg / m-. , this rigid microporous layer has a thickness of 1.5 mm. to 5.0 mm. and an area weight of 0.6 kg / irr. at 1.6 kg / pr.

15. An equipment according to one of claims 5 to 8 and 10 to 14, characterized in that to isolate the floor the assembly package comprises a decorated layer of approximately 5 mm. of thickness and an area weight of 0.4 kg / m "at 1.0 kg / pr.

16. An equipment according to one of claims 5 to 8 and 10 to 14, characterized in that for the final internal wall covering the assembly package comprises at least one decorated layer of approximately 5 mm. of thickness and an area weight of 0.4 kg / pr at 1.0 kg / m ".

17. An equipment according to one of claims 1 to 4, characterized in that for the internal lining of the roof the mounting package comprises a surface structured as a support which forms an air layer adheres to the part of the vehicle area and the layer porous elastic consists of a layer of rigid thermoformed foam with a compression modulus greater than 120,000 Pa, with a thickness of approximately 13 mm. to 17 mm. and with an area weight of 0.2 kg / pr. at 0.4 kg / m ", and the rigid microporous layer comprises a thickness of 1.5 mm to 2.0 mm and an area weight of 0.4 kg / m". at 0.6 kg / pr. , wherein the decorated porous layer comprises a thickness of approximately 2 mm. and an area weight of approximately 0.21 kg / m ".

18. An equipment according to one of claims 1 to 4, characterized in that for the internal lining of the roof the mounting package comprises a surface structured as a support which forms an air layer, adheres to the part of the vehicle area and the porous elastic layer consists of a soft molded PU foam layer with open pores with a compression modulus less than 60kPa, with a thickness of approximately 20mm. and with an area weight of 0.8 kg / m ", and the rigid microporous layer has a thickness of 1.5 mm to 2.0 mm and an area weight of 0.4 kg / m". at 0.6 kg / m ", where the porous decorated layer comprises a thickness of approximately 2 mm and an area weight of approximately 0.21 kg / m-.

19. An equipment according to one of claims 1 to 4, characterized in that for the internal lining of the roof the mounting package comprises a surface structured as a support which forms an air layer, adheres to the part of the vehicle area and a porous elastic layer consists of a shearing of thermoplastic blended fibers with a density of less than 35 kg / irr ", with a thickness of approximately 20 mm and with an area weight of 0.7 kg / pr., and the rigid microporous layer comprises a thickness from 1.5 mm to 2.0 m and an area weight of 0.4 kg / m- to 0.6 kg / irr, where the porous decorated layer comprises a thickness of approximately 2 mm and an area weight of approximately 0.21 kg / m "

20. An equipment according to one of claims 1 to 4, characterized in that for the inner lining of the roof the mounting package comprises a surface structured as a support which forms an air layer, adheres to the part of the vehicle area and the porous elastic layer consists of a shearing of duroplastic mixed fibers with a density of less than 50 kg / m ", with a thickness of approximately 20 mm and with an area weight of 1.07 kg / m-., and the rigid microporous layer It comprises a thickness of 1.5 mm to 2.0 mm and an area weight of 0.4 kg / m ". at 0.6 kg / m "., where the porous decorated layer comprises a thickness of approximately 2 m and an area weight of approximately 0.21 kg / rtr.

21. An equipment according to one of claims 1 to 4, characterized perqué for the inner lining of the roof the assembly package comprises a surface structured as a support which forms an air layer, is attached to the part of the area of the vehicle, the The assembly package additionally comprises an elastic open pore fastening layer, in particular a micropermeable, highly compressed fiber material or honeycomb-shaped fastening material, of about 3 to 5 mm. of thickness and with an area weight of 0.4 to 0.6 kg / m "., and the porous elastic layer consists of a rigid thermoformed foam layer with a compression module greater than 120,000 Pa, with a thickness of 13 mm to 17 mm and an area weight of 0.2 kg / pr to 0.4 kg / pr, and the rigid microporous layer comprises a thickness of approximately 2 mm and an area weight of approximately 0.21 kg / m ".

22. An equipment according to one of claims 1 to 4, characterized in that for the internal lining of the roof the mounting package comprises a surface structured as a support which forms an air layer, is fastened to the part of the vehicle area, the assembly package and additionally comprises a rigid open-pore fixing layer, in particular a microporous, highly compressed fiber material or honeycomb-shaped fixing material, of about 3 to 5 m. of thickness and with an area weight of 0.4 to 0.6 kg / irr., the porous elastic layer is a layer of soft molded PU foam of open pores with a compression modulus less than 60 kPa, with a thickness of approximately 20 mm. and an area weight of approximately 0.8 kg / pr., and the microporous rigid layer comprises a thickness of approximately 1.5 m. to 2.0 mm. and an area weight of 0.4 to 0.6 Kg / pr., where the porous decorated layer comprises a thickness of approximately one to two years. 0 2 1 g / pr

23. An equipment according to one of claims 4, characterized in that for the internal lining of the roof the mounting package comprises a surface structured as a support which forms an air layer, is fastened to the part of the vehicle area, and additionally it comprises an open-pore rigid fixing layer, in particular of a highly compressed microporous fiber material with a honeycomb-shaped fastening material of approximately 3 to 5 mm. of thickness and co an area weight of 0.4 to 0.6 kg / m "., i = porous elastic layer of a sheeted thermoplastic blended fibers with a density of less than 35 kg / m, with a thickness of approximately 20 mm. an area weight of about 0.7 kg / m ", and the rigid microporous layer comprises a thickness of about 1.5 mm. to 2.0 mm. and an area weight of 0.4 to 0.6 Kg / m ", where the porous decorated layer comprises a thickness of approximately 2mm and an area weight of approximately 0.21kg / rr.

24. An equipment according to one of claims 1 to 4, characterized in that for the inner lining of the roof the mounting package comprises a surface structured as a support which forms an air layer, is attached to the part of the vehicle area, and it additionally comprises a rigid open-pore fixing layer, in particular of a highly compressed microporous fiber material or honeycomb-shaped fixing material, of about 3 to 5 mm. of thickness and with an area weight of 0.4 to 0.6 kg / pr. The porous elastic layer is a shearing of duropic mixed fibers with a density of less than 50 kg / m ", with a thickness of approximately 20 m and a weight area of approximately 1.0 kg / pr., and the rigid layer The microporous layer comprises a thickness of approximately 1.5 mm to 2.0 mm and an area weight of 0.4 to 0.6 kg / pr, where the porous decorated layer comprises a thickness of approximately 2 mm and a weighing area of approximately 0.21 kg / pr. .

25. An equipment according to one of claims 21 and 24, characterized in that for the internal wall of the roof the mounting package and part of the vehicle area there is at least partially arranged a buffer layer, which consists of a foam molded with a thickness of approximately 4 mm. and an area weight of 0.2 kg / m ".

26. An equipment according to one of claims 1 to 4, characterized in that the door coating and the thin PU sheet of approximately 25 μm are provided with approximately 0.003 kg / m. between the air layer and the mounting package, the porous layer of the mounting package consists of a rigid molded foam of approximately 15 mm. with an area weight of approximately 0.3 kg / pr., the rigid microporous layer comprises a thickness of approximately 1 mm. to 1.5 mm. and an area weight of approximately 0.5 kg / m., and the porous layer in particular decorated with open pores comprises an area weight of approximately 0.21 kg / pr. and a thickness of approximately 2 mm.

27. A device according to one of claims 1 to 4, characterized in that the covering of the door and the thin PU sheet of approximately 25 μm with approximately 0.003 kg / m "between the air layer and the mounting package, the porous layer of the mounting package consists of a thick molded foam I of approximately 15 mm with a weight area of approximately 0.6 kg / m ". At 0.9 kg / m ", the rigid microporous layer comprises a thickness of approximately 1 m to 1.5 mm and a weight area of approximately 0.5 kg / m., the porous layer in particular decorated with open pores comprises a weight area of approximately 0.21 kg / m ". and a thickness of approximately 2 mm.

28. An equipment according to one of claims 1 to 4, characterized in that the door coating and the thin PU sheet of approximately 2 μm are provided with approximately 0.003 kg / m "between the air layer and the mountingThe porous layer of the assembly package consists of a shearing of thermopipestic mixed fibers of approximately 15 mm. of thickness with a density less than about 35 kg / m "and a weight area of about 0.5 kg / pr., the rigid microporous layer comprises a thickness of about 1 mm to 1.5 mm and a weight area of about 0.5 kg / m "., And the porous layer in particular decorated with open pores comprises an area weight of approximately 0.21 kg / m" and a thickness of approximately 2 mm.

29. An equipment according to one of claims 1 to 4, characterized in that the door coating and the thin PU sheet of approximately 25 μm are provided with approximately 0.003 kg / m "between the air layer and the package. When assembling, the porous layer of the assembly package consists of a shearing of duroplastically mixed fibers approximately 15 mm thick with a density less than about 50 kg / m ". and an area weight of approximately 0.75 kg / pr. , the rigid microporous layer comprises a thickness of approximately 1 mm. at 1.5 m. and an area weight of approximately 0.5 kg / m ", and the porous layer in particular decorated with open pores comprises an area weight of approximately 0.21 kg / irr and a thickness of approximately 2 mm.

30. A device according to one of claims 26 to 29, characterized in that the part of the vehicle is at least partially provided with a damping layer, which consists of an ultra-light damping material of approximately 2.3 mm. of multilayer thickness with an area weight of approximately 2.67 kg / mr. and with at least one thin sheet of thin aluminum of approximately 0.1 mm. of thickness .

31. A device according to one of claims 26 to 29, characterized in that the part of the vehicle is at least partially provided with a damping layer, which consists of an ultra-light damping material of approximately 2.3 mm. of multilayer thickness with an area weight of approximately 2.67 kg / m "and with at least one thin sheet of fiber-reinforced plastic paper of approximately 0.1 mm in thickness, with which the area weight of the multilayer cushion layer is approximately 2.54. kg / m ".

32. An equipment according to claim 3, characterized in that for the final coating of the wall of the motor space side, the mounting package on the motor space side is provided with a moisture resistant protective layer, in particular a Shielding protector resistant to oil and water, the rigid microporous layer is placed between the elastic layer and this protective layer, where the rigid layer consists of a highly compressed fiber material with a thickness of approximately 2.5 mm. and an area weight of approximately 1.0 kg / m ", the open-pored elastic layer of the mounting package consists of a thermoformed foam approximately 15 mm thick with an area weight of approximately 0.3 kg / m". The protective layer on the side of the motor space comprises a thickness of 0.2 to 0.4 mm. and an area weight of 0.1 to 0.3 kg./pr.

33. An equipment according to claim 3, characterized in that for the final coating of the wall of the motor space side, the mounting package on the motor space side is provided with a moisture resistant protective layer, in particular a Shielded protector resistant to oil and water, the rigid microporous layer is placed between the elastic layer and this protective layer, where the rigid layer consists of a highly compressed fiber material with a thickness of approximately 2.5 mm. and an area weight of approximately 1.0 kg / m "., the open-pored elastic layer of the mounting package consists of a molded PU foam approximately 15 mm thick with an area weight of approximately 0.6 kg / m". at 0.9 kg / pr., and the protective layer on the side of the engine room comprises a thickness of 0.2 to 0.4 m, and an area weight of 0.1 to 0.3 kg / m ".

34. An equipment according to claim 3, characterized in that for the final coating of the wall of the motor space, the mounting package on the side of the motor space is provided with a protective layer resistant to moisture, in particular a Shielding protector resistant to oil and water, the rigid microporous layer is placed between the elastic layer and this protective layer, where the rigid layer consists of a highly compressed fiber material with a thickness of approximately 2.5 mm. and an area weight of approximately 1.0 kg / pr., the open-pored elastic layer of the mounting package consists of a shearing of heat-resistant thermoset fibers of approximately 15 mm. of thickness with an area weight of approximately 0.7 kg / m "at 1.0 kg / m"., and the protective layer on the side of the engine room comprises a thickness of 0.2 to 0.4 mm. and an area weight of 0.1 to 0.3 kg / m ".

35. An equipment according to claims 32 to 34, characterized in that between the air layer and the mounting package a resistant protective shearing is provided, which comprises an area weight of 0.05 kg / m "at 0.15 kg / m". and in particular a protective shearing resistant to oil and water.

36. A device according to claim 3, characterized in that the rigid microporous layer is placed between the porous elastic layer and the air layer.

37. A device according to claim 36, characterized in that for the final coating of the wall of the motor space side, the rigid layer consists of a highly compressed fibrous material with a thickness of approximately 2.5 mm. and an area weight of approximately 1.0 kg / pr., the open-pored elastic layer of the mounting package consists of a thermo-shaped foam of approximately 15 mm. of thickness with an area weight of approximately 0.3 kg / m "and a moisture resistant protective layer is provided on the side of the motor space, in particular a shearing of water and oil resistant fibers with a thickness of 0.2 to 0.4 mm and a weight area of 0.1 to 0.3 kg / m-.

38. An equipment according to claim 36, characterized in that for the final coating of the wall of the motor space side, the rigid layer consists of a highly compressed fibrous material with a thickness of about 2.5 mm. and an area weight of approximately 1.0 kg / m "., the open-pored elastic layer of the mounting package consists of a molded PU foam approximately 15mm thick with an area weight of approximately 0.6 kg / m". at 0.6 kg / m "., and a moisture resistant protective layer is provided on the side of the engine, in particular a shearing of water and oil resistant fibers with a thickness of 0.2 to 0.4 mm and a weight area from 0.1 to 0.3 kg / m ".

39. An equipment according to claim 36, characterized in that for the final coating of the wall of the space side of the engine, the rigid layer consists of a highly compressed fibrous material with a thickness of approximately 2.5 mm. and an area weight of approximately 1.0 kg / m "., the open-pored elastic layer of the mounting package consists of a shearing of duroplastic blended fibers of approximately 15 m in thickness with an area weight of approximately 0.7 kg / pr. at 1.0 kg / pr., and a moisture-resistant protective layer is provided on the side of the motor, in particular a shearing of water and oil resistant fibers with a thickness of 0.2 to 0.4 mm and a weight area from 0.1 to 0.3 kg / m ".

40. An equipment according to one of claims 32 to 34, 37 to 39, characterized in that a buffer foam is provided between the air layer and the mounting package which comprises a thickness of 3.0 mm and an area weight of approximately 0.12 kg / pr.

41. An equipment according to one of claims 1 to 40, characterized in that the part of the vehicle area in a steel sheet of approximately 0.8 mm. of thickness.

42. An equipment according to one of claims 1 to 40, characterized in that the part of the vehicle area in an aluminum sheet of approximately 1.1 mm. of thickness.

43. An equipment according to one of claims 1 to 40, characterized in that the part of the vehicle area in a plastic part reinforced with fiber, in particular organic sheet approximately 1.5 mm. of thickness .

44. A device according to one of claims 1 to 40, characterized in that the porous elastic layer has a heat conductivity? less than 0.05 W / prK, preferentially 0. 04 W / m K

45. The assembly package for a device according to one of claims 1 to 44, characterized in that it is a free assembly package of heavy layers and comprises a rigid microporous layer, in particular a fiber layer with open pores or a layer composed of fiber / foam, which has a resistance to air flow from R- = 500 Nsm "" 'to R- = 2500 Nsm "', in particular from R- = 900 Nsm" 'to R- = 200 ONsm ""' , and a mass of the area of m_ = 0.3 kg / m "at m- = £. Okg / pr, in particular from mF = 0.5 kg / m" to m. = 1.6 g / m.

46. The assembly package according to claim 45, characterized in that the rigid microporous layer has a bending stiffness of B = 0.005 Nm. a B = 10.5 Nm. , in particular from B = 0.025 Nm. a B = 6.0 Nm.

47. The assembly package according to one of claims 1 to 44, characterized in that it is provided with a buffer layer v / c adhesive layer. Summary of the Invention The invention relates to a device (41) for reducing noise in motor vehicles and comprises at least one part of the flat vehicle (11) with a sound insulating mounting package (42) consisting of several layers and at least a partially interleaved air layer (25). This mounting package (42) has at least one porous cushion layer (13), a reinforced microporous layer (14) which is light weight, rigid and with open pores, a resistance to air flow between R. = 500 Nsm "" "and R- = 2500 Nsm" ". and a surface area of pu = 0.3 kg / pr to m. = 2.0 kg / m. "The reinforced layer (14) has a stiffness of B = 0.05 Nm to B = 10.5 Nm. This makes it possible to replace the weight of the classic elastic mass systems for the reduction of noise in vehicles with systems at least 50? < lighter In addition to the dampening effect on oscillations this equipment (41) also effectively absorbs sound and provides thermal insulation Preferably, this ultra-light, multifunctional equipment (41) is used to insulate the refractory floor or wall , or as a lining or internal lining of the roof.