US20070169991A1 - Device and method for heat and noise insulation of motor vehicles - Google Patents

Device and method for heat and noise insulation of motor vehicles Download PDF

Info

Publication number
US20070169991A1
US20070169991A1 US10/878,879 US87887904A US2007169991A1 US 20070169991 A1 US20070169991 A1 US 20070169991A1 US 87887904 A US87887904 A US 87887904A US 2007169991 A1 US2007169991 A1 US 2007169991A1
Authority
US
United States
Prior art keywords
carrier layer
damping elements
elements
insulating layer
fibers
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US10/878,879
Inventor
Ulrich Bertsch
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mercedes Benz Group AG
Original Assignee
DaimlerChrysler AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by DaimlerChrysler AG filed Critical DaimlerChrysler AG
Assigned to DAIMLERCHRYSLER AG reassignment DAIMLERCHRYSLER AG ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: ULRICH BERTSCH-1
Publication of US20070169991A1 publication Critical patent/US20070169991A1/en
Assigned to DAIMLER AG reassignment DAIMLER AG CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). Assignors: DAIMLERCHRYSLER AG
Abandoned legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R13/00—Elements for body-finishing, identifying, or decorating; Arrangements or adaptations for advertising purposes
    • B60R13/08—Insulating elements, e.g. for sound insulation
    • B60R13/0876—Insulating elements, e.g. for sound insulation for mounting around heat sources, e.g. exhaust pipes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B77/00—Component parts, details or accessories, not otherwise provided for
    • F02B77/11—Thermal or acoustic insulation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L59/00—Thermal insulation in general
    • F16L59/02—Shape or form of insulating materials, with or without coverings integral with the insulating materials
    • F16L59/026—Mattresses, mats, blankets or the like
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L59/00—Thermal insulation in general
    • F16L59/06—Arrangements using an air layer or vacuum
    • F16L59/07—Arrangements using an air layer or vacuum the air layer being enclosed by one or more layers of insulation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R13/00—Elements for body-finishing, identifying, or decorating; Arrangements or adaptations for advertising purposes
    • B60R13/08—Insulating elements, e.g. for sound insulation
    • B60R13/0838—Insulating elements, e.g. for sound insulation for engine compartments

Definitions

  • the present invention relates to a device for heat insulation and/or noise insulation for a component such as an oil-carrying element of an internal combustion engine.
  • the device has a first carrier layer that is rigidly connected with the component to be insulated and an insulating layer that demonstrates poor heat and noise conduction properties.
  • a heat-insulating and noise-insulating paneling for the engine space of a motor vehicle is described in German Patent No. DE 198 21 532 A1, which comprises a cover layer on the engine side and a cover layer facing away from the engine side, as well as a first, thin carrier layer made of an acoustically insulating, temperature-resistant, duroplastic foam material and an insulating layer made of a plastic foam material, a particle laminate foam material, or a nonwoven fabric.
  • One cover layer consists of a nonwoven fabric, a woven fabric, or a knitted fabric, whereby the fibers are woven together, spun together, or connected with one another in some other manner (particularly by means of binders). The same holds true for the fiber nonwoven fabric of the insulating layer.
  • the paneling is structured as a molded part that has been pressed to produce a unit, and is intended for lining car body components such as the face wall of the engine space or the transmission tunnel.
  • a heat-insulating and noise-insulating component comprising a reinforcing carrier layer and an absorbent insulating layer
  • the carrier layer is formed by a metal intermediate wall of a motor vehicle, for example a partition between the passenger space and the engine space of the motor vehicle.
  • the insulating layer is formed from several plies of fiber nonwoven fabric that have been consolidated in themselves, or shape-retaining foam materials, as necessary.
  • convection channels through which air can flow having defined inlet and outlet openings and a rigidly defined position and expanse, are furthermore provided, to increase the heat resistance (i.e. for cooling) of the component.
  • This object is accomplished by means of a device which has a plurality of individual damping elements, particularly fiber or honeycomb elements, which are individually connected with the carrier layer and/or joined to it in articulated manner.
  • An air cushion is formed between the individual damping elements, within the insulating layer and/or between the carrier layer and the insulating layer, which cushion can be changed by means of an adjustment of several damping elements, the entire insulating layer and/or the carrier layer.
  • the air cushion demonstrates reduced heat and noise conduction properties and thereby acts as a damping material.
  • the air cushion can be changed in accordance with the operating conditions of the motor vehicle, by adjusting the damping elements, the insulating layer and/or the carrier layer. Therefore the heat and noise conduction properties of the device can be adapted to the operating conditions of the motor vehicle.
  • damping elements are implemented as elastic fibers made of a material having poor heat conduction properties.
  • the fibers are adjustable by way of an air stream, particularly the head wind of a motor vehicle.
  • a device that can be adjusted in a particularly simple manner is created, which automatically changes its heat transfer properties as a function of the driving speed of the motor vehicle, if the head wind moves the fibers because of their air resistance.
  • a particularly good shielding property of the device is provided, in particular in the case of a cold start and a low start-up speed, so that the device is preferably suitable for being affixed on the outside of an internal combustion engine.
  • the device according to the invention improves the cold-start behavior of the internal combustion engine.
  • the device is particularly advantageous for use on the outside of an oil pan, with fibers hanging down.
  • damping elements are implemented as fibers having shape-changing properties, which are adjustable by way of a thermal and/or electrical control that turns them on, which is preferably imparted by way of the carrier layer. Therefore the fibers can be adjusted actively and in a targeted manner, independent of the head wind or the influence of gravity, so that an adjustment of the heat and noise conduction properties in accordance with current requirements possible at any time. Fibers that are adjustable by means of piezo effects, bimetal effects, and/or memory effects are preferred. A preferred turn-on control by way of the carrier layer allows simultaneous and parallel turn-on control of all the damping elements.
  • damping elements which are configured as movably mounted honeycomb elements. These elements are adjustable in their position and/or orientation via a carrier layer that can be turned on.
  • the honeycomb elements are implemented as hollow bodies that are stable in shape, to a great extent, and are preferably rigidly connected with the carrier layer or at least indirectly coupled with it.
  • a honeycomb element is not limited, according to the invention, to a specific structure, for example an octagonal or eight-sided structure, but instead, a honeycomb element can have any desired tube-like/chamber-like structure.
  • the honeycomb elements are filled with air or another gas that conducts heat poorly, whereby a more or less strong vacuum can also be provided.
  • a certain air cushion is provided in the region of the honeycomb elements, which cushion is surrounded by the honeycomb elements at least in certain segments. By adjusting the honeycomb elements, it is therefore also possible to adjust the air cushion.
  • damping elements are implemented as honeycomb elements arranged to be immovable relative to the component to be insulated.
  • These movable honeycomb elements are mounted between the immovable honeycomb elements, or the immovable honeycomb elements demonstrate shape-changing properties and can be adjusted by way of a thermal and/or electrical turn-on control, which is preferably imparted by way of the carrier layer.
  • the honeycomb elements implemented to be immovable are not displaceable in a translational manner.
  • An air cushion consisting of many individual volumes is preferably formed between them, and individual volumes can be adjusted by a translational adjustment of movable honeycomb elements and/or a shape change of the immovable honeycomb elements.
  • the insulating layer has several air pockets that are separated from one another.
  • a damping element is arranged in at least one of the air pockets.
  • a ply that delimits and surrounds the air pockets is assigned to the insulating layer. This ply can also be represented by the carrier layer. Any desired gas having poor heat-conducting properties can be accommodated in the air pockets, if applicable, under vacuum conditions.
  • the damping element is preferably implemented as a honeycomb element, or as another barrier body that has mass and poor heat/noise-conducting properties.
  • the damping element preferably serves to adjust the air pockets from the inside out.
  • the invention also includes a method for heat insulation and/or noise insulation, wherein a first carrier layer is connected with a component to be insulated, particularly an oil-carrying element of an internal combustion engine.
  • a plurality of individual damping elements are individually connected with the carrier layer and/or joined to it in articulated manner, to form an insulating layer.
  • An air cushion is formed between the individual damping elements, within the insulating layer and/or between the carrier layer and the insulating layer, which cushion is changed by means of an adjustment of several damping elements, the entire insulating layer and/or the carrier layer.
  • the method according to the invention makes effective insulation of the internal combustion engine possible, in that one or more oil-carrying elements are provided with an insulating device comprising a plurality of damping elements.
  • the damping elements, the insulating layer and/or the carrier layer are adjustable, in such a manner that the air cushion that is preferably formed in or around the damping elements can be adapted to the operating conditions of the internal combustion engine. In addition to the conditions in the engine, the ambient conditions must also be taken into consideration.
  • damping elements are implemented as elastic fibers made of a material having poor heat conduction properties. These fibers are adjustable by way of an air stream, particularly the head wind of a motor vehicle.
  • the method utilizes the head wind of the motor vehicle in order to automatically change the heat transfer properties of the air cushion as a function of the driving speed of the motor vehicle, if the head wind moves the fibers because of their air resistance.
  • the method produces a particularly good shielding of the internal combustion engine, in particular in the case of a cold start and a low start-up speed. The method thereby makes it possible to improve the cold-start behavior of the internal combustion engine, by achieving a faster warm-up of the internal combustion engine.
  • damping elements are implemented as fibers having shape-changing properties, which are adjusted by way of a thermal and/or electrical control that turns them on, which is preferably imparted by way of the carrier layer. Therefore the fibers can be adjusted actively and in a targeted manner, independent of the head wind or the influence of gravity, so that an adjustment of the heat and noise conduction properties in accordance with current requirements possible at any time. Fibers that are adjustable by means of piezo effects, bimetal effects, and/or memory effects are preferred. A turn-on control by way of the carrier layer allows simultaneous and parallel turn-on control of all the damping elements.
  • damping elements are implemented as movably mounted honeycomb elements that are adjusted in their position and/or orientation by way of a carrier layer that can be turned on or moved.
  • the honeycomb elements are implemented as hollow bodies that are stable in shape, to a great extent, and which are connected with the carrier layer or articulated on it.
  • a honeycomb element is not limited, according to the invention, to a specific structure, for example an octagonal or eight-sided structure, but instead, a honeycomb element can have any desired tube-like/chamber-like structure.
  • the honeycomb elements are filled with air or another gas that conducts heat poorly, whereby a more or less strong vacuum can also be provided.
  • a certain air cushion is provided in the region of the honeycomb elements, which cushion is surrounded by the honeycomb elements at least in certain segments.
  • FIG. 1 shows a fundamental diagram relating to a first exemplary embodiment of the device according to the invention
  • FIGS. 2 a and 2 b show additional fundamental diagrams relating to the adjustment of the device according to FIG. 1 ;
  • FIG. 3 shows a fundamental diagram relating to a second exemplary embodiment of the device according to the invention.
  • FIG. 4 shows a fundamental diagram relating to a third exemplary embodiment of the method according to the invention.
  • FIG. 1 shows a first exemplary embodiment of a device 1 according to the invention for heat insulation and noise insulation, in schematic, simplified manner.
  • the insulating device 1 is affixed to the outside of an oil-carrying component 2 to be insulated, of a diesel internal combustion engine, not shown in detail.
  • Component 2 to be insulated is preferably an oil pan or another oil-carrying component of the engine.
  • a carrier layer 3 is affixed to component 2 to be insulated, in order to form device 1 ; in turn, a plurality of damping elements in the form of fibers 5 is attached to this layer.
  • Fibers 5 represent essential parts of an insulating layer 4 .
  • Fibers 5 are preferably produced from mineral silicates, ceramics, carbon, metal, or heat-resistant, particularly duroplastic plastics. Fibers that can be used are also described in German Patent No. DE 198 21 532 A1. Between the fibers, a continuous air cushion 6 is formed, in the manner of an animal fur, which cushion represents another essential part of the insulating layer 4 .
  • Fibers 5 are preferably attached to carrier layer 3 in a hanging manner and at a minimum angle ⁇ of between 70° and 90°. In the operation of the motor vehicle, fibers 5 are then preferably exposed to the head wind, whereby a force equilibrium occurs between the force of gravity, the air resistance, and the internal tension of fibers 5 .
  • a force equilibrium occurs between the force of gravity, the air resistance, and the internal tension of fibers 5 .
  • different behaviors of the fibers can be adjusted.
  • FIGS. 2 a and 2 b there is a change in the angle ⁇ between the fibers and the carrier layer when the head wind flows through the fibers 5 in different ways.
  • FIG. 2 a assumes a strong lateral flow from the right, in which fibers 5 rest against carrier layer 3 , as shown. In this connection, the air cushion between the fibers is reduced in terms of its thickness and its volume, so that a reduced insulation property is achieved.
  • FIG. 2 b assumes a weak flow from the left, whereby the fibers stand up and an increased insulation property is achieved by means of a larger air cushion between the fibers 5 .
  • device 1 is implemented without an air flow at rest, in accordance with FIG. 2 b.
  • the fibers are configured to be easy to bend.
  • the fibers are elastically bendable, so that a particularly strong and rigid attachment of the fibers in the carrier layer can be implemented, while at the same time, strong bending of the fibers as a result of the head wind of the motor vehicle can be achieved.
  • fibers 5 are implemented to be adjustable using piezo effects, bimetal effects and/or memory effects.
  • a preferred turn-on control occurs by way of carrier layer 3 , which passes a corresponding adjustment signal on to all the fibers 5 at the same time, in parallel.
  • carrier layer 3 passes a corresponding adjustment signal on to all the fibers 5 at the same time, in parallel.
  • an orientation of the fibers relative to the carrier layer and thereby relative to component 2 to be insulated can be changed, and this in turn results in a changed degree of insulation.
  • Turn-on control of the fibers takes place, according to the invention, on the basis of the internal need for heat of component 2 , i.e. of the entire internal combustion engine, and/or on the basis of external general conditions such as the ambient temperature, the driving speed of the motor vehicle, etc. Furthermore, turn-on control of the fibers can take place as a function of the noise emission requirements, i.e. the noise development of the component 2 , i.e. the internal combustion engine.
  • FIG. 3 shows another exemplary embodiment 1 ′ of the device for heat insulation and noise insulation according to the invention.
  • the component 2 to be insulated serves, at the same time, as the carrier layer 3 ′, i.e. as an integral part of the carrier layer, on which an insulating layer 4 ′ is again arranged, on the outside.
  • several damping elements are implemented as movably mounted honeycomb elements, which are adjustable in their position relative to the component 2 to be insulated.
  • Honeycomb elements 8 that are immovable, to a great extent, relative to the component 2 , are provided between the movable honeycomb elements.
  • Honeycomb elements 7 , 8 are hollow bodies that are stable in shape, to a great extent, which are preferably firmly connected with the carrier layer.
  • a honeycomb element is implemented, according to the invention, as a component comprising uniformly octagonal tubes arranged parallel to one another, but is not limited to a specific structure, for example an octagonal or eight-sided structure. Instead, a honeycomb element can have any desired tube-like/chamber-like structure.
  • the honeycomb elements are preferably filled with air or another gas that conducts heat poorly, whereby a more or less strong vacuum can also be provided.
  • a tube structure of the immovable honeycomb elements 8 is preferably rotated by 90° relative to the structure of the movable honeycomb elements 7 , in order to achieve air cushions that are delimited in themselves.
  • an air cushion 6 is provided in the region of the honeycomb elements, which cushion is surrounded by the honeycomb elements, at least in segments, and forms another integral part of insulating layer 4 ′. By adjusting honeycomb elements 7 , air cushion 6 is therefore also adjustable (indicated by arrows 11 ).
  • the immovable honeycomb elements have shape-changing properties and are adjustable by way of a thermal and/or electrical turn-on control that is preferably imparted by the carrier layer.
  • a modified insulating layer can consist exclusively of such immovable honeycomb elements.
  • a modified device 1 ′′ has a carrier layer 3 ′′ as well as an insulating layer 4 ′′.
  • the insulating layer 4 ′′ is fixed on a component 2 to be insulated, at certain points or along lines.
  • the insulating layer 4 ′′ is implemented to be elastically deformable or very stretchable and, in more or less sealed manner, surrounds several air pockets 9 that are separated from one another, whereby a damping element in the form of a honeycomb element 10 is arranged in each of the air pockets 9 .
  • honeycomb element 10 is preferably implemented like the honeycomb elements already described and/or as another barrier body that has mass and is poorly heat/noise-conductive. It is filled with any desired gas that has poor heat conductivity, if applicable under vacuum conditions.
  • the honeycomb elements 10 preferably adjust the air pockets from the inside, in that they are adjustable, for example, by means of piezo effects, bimetal effects and/or memory effects.
  • a preferred turn-on control by way of the carrier layer 3 ′′ allows simultaneous and parallel turn-on of all the honeycomb elements 10 that are in touch contact with the carrier layer 3 ′′ or are attached to it.
  • a method according to the invention for heat insulation and/or noise insulation results.
  • a carrier layer is connected with a component to be insulated, particularly an oil-carrying element of an internal combustion engine.
  • a plurality of individual damping elements, particularly fiber or honeycomb elements, are individually connected with the carrier layer and/or joined to it in articulated manner, to form an insulating layer.
  • An air cushion is formed between the individual damping elements, within the insulating layer and/or between the carrier layer and the insulating layer, which cushion is changed by means of an adjustment of several damping elements, the entire insulating layer and/or the carrier layer.
  • the method according to the invention makes effective insulation of the internal combustion engine possible, in that one or more oil-carrying elements are provided with an insulating device comprising a plurality of damping elements.
  • the damping elements, the insulating layer and/or the carrier layer are adjustable, in such a manner that the air cushion that is preferably formed in or around the damping elements can be adapted to the operating conditions of the internal combustion engine. In addition to the conditions in the engine, the ambient conditions must also be taken into consideration.
  • damping elements are implemented as elastic fibers made of a material having poor heat conduction properties, which fibers are adjustable by way of an air stream, particularly the head wind of a motor vehicle.
  • the method utilizes the head wind of a motor vehicle in order to automatically change the heat transfer properties of the air cushion as a function of the driving speed of the motor vehicle, if the head wind moves the fibers 5 because of their air resistance.
  • the method produces a particularly good shielding of the internal combustion engine, in particular, in the case of a cold start and a low start-up speed. The method thereby makes it possible to improve the cold-start behavior of the internal combustion engine, by achieving a faster warm-up of the internal combustion engine.
  • damping elements are implemented as fibers having shape-changing properties, which are adjusted by way of a thermal and/or electrical control that turns them on, which is preferably imparted by way of the carrier layer. Therefore the fibers can be adjusted actively and in a targeted manner, independent of the head wind or the influence of gravity, so that an adjustment of the heat and noise conduction properties in accordance with current requirements is made possible at any time. Fibers that are adjustable by means of piezo effects, bimetal effects, and/or memory effects are preferred. A turn-on control by way of the carrier layer allows simultaneous and parallel turn-on control of all the damping elements.
  • damping elements are implemented as movably mounted honeycomb elements 7 , 8 , 10 that are adjusted in their position and/or orientation by way of a carrier layer 3 ′, 3 ′′ that can be moved.
  • the honeycomb elements are implemented as hollow bodies that are stable in shape, to a great extent, which are connected with the carrier layer or articulated on it.
  • the honeycomb elements are preferably filled with air or another gas that conducts heat poorly.
  • a certain air cushion 6 is provided in the region of the honeycomb elements 7 , 8 , which cushion is surrounded by the honeycomb elements 7 , 8 at least in certain segments. By adjusting the honeycomb elements, it is therefore also possible to adjust the air cushion.
  • sharply defined air cushions 9 can be assigned to honeycomb elements 10 , but these are also adjustable by a movement/adjustment of the honeycomb elements 10 (indicated by the arrows 11 ).

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)
  • Laminated Bodies (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)

Abstract

A device for heat and noise insulation has a first carrier layer rigidly connected with a component to be insulated, particularly an oil-carrying element of an internal combustion engine, as well as an insulating layer with a plurality of individual damping elements, particularly fiber or honeycomb elements which are individually connected with the carrier layer and/or joined to it in articulated manner. An air cushion is formed between the individual damping elements within the insulating layer and/or between the carrier layer and the insulating layer. The cushion can be changed by adjusting several of the damping elements, the entire insulating layer and/or the carrier layer. A method for insulating comprises connecting the carrier layer to a component to be insulated and attaching a plurality of the damping elements to the carrier layer, with the air cushion being formed between the damping elements, within the insulating layer or between the carrier layer and the insulating layer.

Description

    BACKGROUND OF THE INVENTION
  • 1. Field of the Invention
  • The present invention relates to a device for heat insulation and/or noise insulation for a component such as an oil-carrying element of an internal combustion engine. The device has a first carrier layer that is rigidly connected with the component to be insulated and an insulating layer that demonstrates poor heat and noise conduction properties.
  • 2. The Prior Art
  • A heat-insulating and noise-insulating paneling for the engine space of a motor vehicle is described in German Patent No. DE 198 21 532 A1, which comprises a cover layer on the engine side and a cover layer facing away from the engine side, as well as a first, thin carrier layer made of an acoustically insulating, temperature-resistant, duroplastic foam material and an insulating layer made of a plastic foam material, a particle laminate foam material, or a nonwoven fabric. One cover layer consists of a nonwoven fabric, a woven fabric, or a knitted fabric, whereby the fibers are woven together, spun together, or connected with one another in some other manner (particularly by means of binders). The same holds true for the fiber nonwoven fabric of the insulating layer. The paneling is structured as a molded part that has been pressed to produce a unit, and is intended for lining car body components such as the face wall of the engine space or the transmission tunnel.
  • Furthermore, a heat-insulating and noise-insulating component comprising a reinforcing carrier layer and an absorbent insulating layer is known from German Patent No. DE 199 59 089 A1. In this connection, the carrier layer is formed by a metal intermediate wall of a motor vehicle, for example a partition between the passenger space and the engine space of the motor vehicle. The insulating layer, on the other hand, is formed from several plies of fiber nonwoven fabric that have been consolidated in themselves, or shape-retaining foam materials, as necessary. Within the insulating layer, convection channels through which air can flow, having defined inlet and outlet openings and a rigidly defined position and expanse, are furthermore provided, to increase the heat resistance (i.e. for cooling) of the component.
    • SUMMARY OF THE INVENTION
  • It is therefore an object of the invention to provide a device that provides effective heat insulation and/or noise insulation with simple means, which insulation can be changed during operation and thereby adapted to operating conditions.
  • This object is accomplished by means of a device which has a plurality of individual damping elements, particularly fiber or honeycomb elements, which are individually connected with the carrier layer and/or joined to it in articulated manner. An air cushion is formed between the individual damping elements, within the insulating layer and/or between the carrier layer and the insulating layer, which cushion can be changed by means of an adjustment of several damping elements, the entire insulating layer and/or the carrier layer. The air cushion demonstrates reduced heat and noise conduction properties and thereby acts as a damping material. The air cushion can be changed in accordance with the operating conditions of the motor vehicle, by adjusting the damping elements, the insulating layer and/or the carrier layer. Therefore the heat and noise conduction properties of the device can be adapted to the operating conditions of the motor vehicle.
  • In an embodiment of the device according to the invention, several damping elements are implemented as elastic fibers made of a material having poor heat conduction properties. The fibers are adjustable by way of an air stream, particularly the head wind of a motor vehicle. In this way, a device that can be adjusted in a particularly simple manner is created, which automatically changes its heat transfer properties as a function of the driving speed of the motor vehicle, if the head wind moves the fibers because of their air resistance. In this connection, a particularly good shielding property of the device is provided, in particular in the case of a cold start and a low start-up speed, so that the device is preferably suitable for being affixed on the outside of an internal combustion engine. In this connection, the device according to the invention improves the cold-start behavior of the internal combustion engine. The device is particularly advantageous for use on the outside of an oil pan, with fibers hanging down.
  • In another embodiment of the device according to the invention, several damping elements are implemented as fibers having shape-changing properties, which are adjustable by way of a thermal and/or electrical control that turns them on, which is preferably imparted by way of the carrier layer. Therefore the fibers can be adjusted actively and in a targeted manner, independent of the head wind or the influence of gravity, so that an adjustment of the heat and noise conduction properties in accordance with current requirements possible at any time. Fibers that are adjustable by means of piezo effects, bimetal effects, and/or memory effects are preferred. A preferred turn-on control by way of the carrier layer allows simultaneous and parallel turn-on control of all the damping elements.
  • In another embodiment of the device according to the invention, there are several damping elements which are configured as movably mounted honeycomb elements. These elements are adjustable in their position and/or orientation via a carrier layer that can be turned on. The honeycomb elements are implemented as hollow bodies that are stable in shape, to a great extent, and are preferably rigidly connected with the carrier layer or at least indirectly coupled with it. In this connection, a honeycomb element is not limited, according to the invention, to a specific structure, for example an octagonal or eight-sided structure, but instead, a honeycomb element can have any desired tube-like/chamber-like structure. Preferably, the honeycomb elements are filled with air or another gas that conducts heat poorly, whereby a more or less strong vacuum can also be provided. In addition, a certain air cushion is provided in the region of the honeycomb elements, which cushion is surrounded by the honeycomb elements at least in certain segments. By adjusting the honeycomb elements, it is therefore also possible to adjust the air cushion.
  • In another embodiment of the device according to the invention, several damping elements are implemented as honeycomb elements arranged to be immovable relative to the component to be insulated. These movable honeycomb elements are mounted between the immovable honeycomb elements, or the immovable honeycomb elements demonstrate shape-changing properties and can be adjusted by way of a thermal and/or electrical turn-on control, which is preferably imparted by way of the carrier layer. The honeycomb elements implemented to be immovable are not displaceable in a translational manner. An air cushion consisting of many individual volumes is preferably formed between them, and individual volumes can be adjusted by a translational adjustment of movable honeycomb elements and/or a shape change of the immovable honeycomb elements.
  • In another embodiment of the device according to the invention, the insulating layer has several air pockets that are separated from one another. A damping element is arranged in at least one of the air pockets. In this connection, a ply that delimits and surrounds the air pockets is assigned to the insulating layer. This ply can also be represented by the carrier layer. Any desired gas having poor heat-conducting properties can be accommodated in the air pockets, if applicable, under vacuum conditions. The damping element is preferably implemented as a honeycomb element, or as another barrier body that has mass and poor heat/noise-conducting properties. The damping element preferably serves to adjust the air pockets from the inside out.
  • The invention also includes a method for heat insulation and/or noise insulation, wherein a first carrier layer is connected with a component to be insulated, particularly an oil-carrying element of an internal combustion engine. A plurality of individual damping elements, particularly fiber or honeycomb elements, are individually connected with the carrier layer and/or joined to it in articulated manner, to form an insulating layer. An air cushion is formed between the individual damping elements, within the insulating layer and/or between the carrier layer and the insulating layer, which cushion is changed by means of an adjustment of several damping elements, the entire insulating layer and/or the carrier layer. The method according to the invention makes effective insulation of the internal combustion engine possible, in that one or more oil-carrying elements are provided with an insulating device comprising a plurality of damping elements. According to the invention, the damping elements, the insulating layer and/or the carrier layer are adjustable, in such a manner that the air cushion that is preferably formed in or around the damping elements can be adapted to the operating conditions of the internal combustion engine. In addition to the conditions in the engine, the ambient conditions must also be taken into consideration.
  • In an embodiment of the method according to the invention, several damping elements are implemented as elastic fibers made of a material having poor heat conduction properties. These fibers are adjustable by way of an air stream, particularly the head wind of a motor vehicle. In this connection, the method utilizes the head wind of the motor vehicle in order to automatically change the heat transfer properties of the air cushion as a function of the driving speed of the motor vehicle, if the head wind moves the fibers because of their air resistance. In this connection, the method produces a particularly good shielding of the internal combustion engine, in particular in the case of a cold start and a low start-up speed. The method thereby makes it possible to improve the cold-start behavior of the internal combustion engine, by achieving a faster warm-up of the internal combustion engine.
  • In another embodiment of the method according to the invention, several damping elements are implemented as fibers having shape-changing properties, which are adjusted by way of a thermal and/or electrical control that turns them on, which is preferably imparted by way of the carrier layer. Therefore the fibers can be adjusted actively and in a targeted manner, independent of the head wind or the influence of gravity, so that an adjustment of the heat and noise conduction properties in accordance with current requirements possible at any time. Fibers that are adjustable by means of piezo effects, bimetal effects, and/or memory effects are preferred. A turn-on control by way of the carrier layer allows simultaneous and parallel turn-on control of all the damping elements.
  • In another embodiment of the method according to the invention, several damping elements are implemented as movably mounted honeycomb elements that are adjusted in their position and/or orientation by way of a carrier layer that can be turned on or moved. The honeycomb elements are implemented as hollow bodies that are stable in shape, to a great extent, and which are connected with the carrier layer or articulated on it. In this connection, a honeycomb element is not limited, according to the invention, to a specific structure, for example an octagonal or eight-sided structure, but instead, a honeycomb element can have any desired tube-like/chamber-like structure. Preferably, the honeycomb elements are filled with air or another gas that conducts heat poorly, whereby a more or less strong vacuum can also be provided. In addition, a certain air cushion is provided in the region of the honeycomb elements, which cushion is surrounded by the honeycomb elements at least in certain segments. By means of adjusting the honeycomb elements, it is therefore also possible to adjust the air cushion.
    • BRIEF DESCRIPTION OF THE DRAWINGS
  • Other objects and features of the present invention will become apparent from the following detailed description considered in connection with the accompanying drawings. It is to be understood, however, that the drawings are designed as an illustration only and not as a definition of the limits of the invention.
  • In the drawings, wherein similar reference characters denote similar elements throughout the several views:
  • FIG. 1 shows a fundamental diagram relating to a first exemplary embodiment of the device according to the invention;
  • FIGS. 2 a and 2 b show additional fundamental diagrams relating to the adjustment of the device according to FIG. 1;
  • FIG. 3 shows a fundamental diagram relating to a second exemplary embodiment of the device according to the invention; and
  • FIG. 4 shows a fundamental diagram relating to a third exemplary embodiment of the method according to the invention.
    • DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
  • Referring now in detail to the drawings, FIG. 1 shows a first exemplary embodiment of a device 1 according to the invention for heat insulation and noise insulation, in schematic, simplified manner. The insulating device 1 is affixed to the outside of an oil-carrying component 2 to be insulated, of a diesel internal combustion engine, not shown in detail. Component 2 to be insulated is preferably an oil pan or another oil-carrying component of the engine.
  • A carrier layer 3 is affixed to component 2 to be insulated, in order to form device 1; in turn, a plurality of damping elements in the form of fibers 5 is attached to this layer. Fibers 5 represent essential parts of an insulating layer 4. Fibers 5 are preferably produced from mineral silicates, ceramics, carbon, metal, or heat-resistant, particularly duroplastic plastics. Fibers that can be used are also described in German Patent No. DE 198 21 532 A1. Between the fibers, a continuous air cushion 6 is formed, in the manner of an animal fur, which cushion represents another essential part of the insulating layer 4.
  • Fibers 5 are preferably attached to carrier layer 3 in a hanging manner and at a minimum angle α of between 70° and 90°. In the operation of the motor vehicle, fibers 5 are then preferably exposed to the head wind, whereby a force equilibrium occurs between the force of gravity, the air resistance, and the internal tension of fibers 5. Depending on how the fibers are attached in carrier layer 3, the thickness of the fibers, and the material properties of the fibers, different behaviors of the fibers can be adjusted. Preferably, as shown in FIGS. 2 a and 2 b, there is a change in the angle α between the fibers and the carrier layer when the head wind flows through the fibers 5 in different ways.
  • FIG. 2 a assumes a strong lateral flow from the right, in which fibers 5 rest against carrier layer 3, as shown. In this connection, the air cushion between the fibers is reduced in terms of its thickness and its volume, so that a reduced insulation property is achieved. FIG. 2 b assumes a weak flow from the left, whereby the fibers stand up and an increased insulation property is achieved by means of a larger air cushion between the fibers 5.
  • In a modified exemplary embodiment, device 1 is implemented without an air flow at rest, in accordance with FIG. 2 b. The fibers are configured to be easy to bend.
  • In another exemplary embodiment, not shown, the fibers are elastically bendable, so that a particularly strong and rigid attachment of the fibers in the carrier layer can be implemented, while at the same time, strong bending of the fibers as a result of the head wind of the motor vehicle can be achieved.
  • In another modified exemplary embodiment, fibers 5 are implemented to be adjustable using piezo effects, bimetal effects and/or memory effects. A preferred turn-on control occurs by way of carrier layer 3, which passes a corresponding adjustment signal on to all the fibers 5 at the same time, in parallel. In this way, also, an orientation of the fibers relative to the carrier layer and thereby relative to component 2 to be insulated can be changed, and this in turn results in a changed degree of insulation.
  • Turn-on control of the fibers takes place, according to the invention, on the basis of the internal need for heat of component 2, i.e. of the entire internal combustion engine, and/or on the basis of external general conditions such as the ambient temperature, the driving speed of the motor vehicle, etc. Furthermore, turn-on control of the fibers can take place as a function of the noise emission requirements, i.e. the noise development of the component 2, i.e. the internal combustion engine.
  • FIG. 3 shows another exemplary embodiment 1′ of the device for heat insulation and noise insulation according to the invention. In this connection, the component 2 to be insulated serves, at the same time, as the carrier layer 3′, i.e. as an integral part of the carrier layer, on which an insulating layer 4′ is again arranged, on the outside. In this connection, several damping elements are implemented as movably mounted honeycomb elements, which are adjustable in their position relative to the component 2 to be insulated. Honeycomb elements 8 that are immovable, to a great extent, relative to the component 2, are provided between the movable honeycomb elements.
  • Honeycomb elements 7, 8 are hollow bodies that are stable in shape, to a great extent, which are preferably firmly connected with the carrier layer. In this connection, a honeycomb element is implemented, according to the invention, as a component comprising uniformly octagonal tubes arranged parallel to one another, but is not limited to a specific structure, for example an octagonal or eight-sided structure. Instead, a honeycomb element can have any desired tube-like/chamber-like structure. The honeycomb elements are preferably filled with air or another gas that conducts heat poorly, whereby a more or less strong vacuum can also be provided. A tube structure of the immovable honeycomb elements 8 is preferably rotated by 90° relative to the structure of the movable honeycomb elements 7, in order to achieve air cushions that are delimited in themselves. In addition, an air cushion 6 is provided in the region of the honeycomb elements, which cushion is surrounded by the honeycomb elements, at least in segments, and forms another integral part of insulating layer 4′. By adjusting honeycomb elements 7, air cushion 6 is therefore also adjustable (indicated by arrows 11).
  • In a modified exemplary embodiment, the immovable honeycomb elements have shape-changing properties and are adjustable by way of a thermal and/or electrical turn-on control that is preferably imparted by the carrier layer. In this connection, a modified insulating layer can consist exclusively of such immovable honeycomb elements.
  • In another embodiment according to FIG. 4, a modified device 1″ has a carrier layer 3″ as well as an insulating layer 4″. The insulating layer 4″ is fixed on a component 2 to be insulated, at certain points or along lines. The insulating layer 4″ is implemented to be elastically deformable or very stretchable and, in more or less sealed manner, surrounds several air pockets 9 that are separated from one another, whereby a damping element in the form of a honeycomb element 10 is arranged in each of the air pockets 9.
  • Such a honeycomb element 10 is preferably implemented like the honeycomb elements already described and/or as another barrier body that has mass and is poorly heat/noise-conductive. It is filled with any desired gas that has poor heat conductivity, if applicable under vacuum conditions. The honeycomb elements 10 preferably adjust the air pockets from the inside, in that they are adjustable, for example, by means of piezo effects, bimetal effects and/or memory effects. A preferred turn-on control by way of the carrier layer 3″ allows simultaneous and parallel turn-on of all the honeycomb elements 10 that are in touch contact with the carrier layer 3″ or are attached to it.
  • From the devices described, a method according to the invention for heat insulation and/or noise insulation results. In this method, a carrier layer is connected with a component to be insulated, particularly an oil-carrying element of an internal combustion engine. A plurality of individual damping elements, particularly fiber or honeycomb elements, are individually connected with the carrier layer and/or joined to it in articulated manner, to form an insulating layer. An air cushion is formed between the individual damping elements, within the insulating layer and/or between the carrier layer and the insulating layer, which cushion is changed by means of an adjustment of several damping elements, the entire insulating layer and/or the carrier layer.
  • The method according to the invention makes effective insulation of the internal combustion engine possible, in that one or more oil-carrying elements are provided with an insulating device comprising a plurality of damping elements. According to the invention, the damping elements, the insulating layer and/or the carrier layer are adjustable, in such a manner that the air cushion that is preferably formed in or around the damping elements can be adapted to the operating conditions of the internal combustion engine. In addition to the conditions in the engine, the ambient conditions must also be taken into consideration.
  • In an embodiment of the method according to the invention according to FIGS. 1, 2 a, and 2 b, several damping elements are implemented as elastic fibers made of a material having poor heat conduction properties, which fibers are adjustable by way of an air stream, particularly the head wind of a motor vehicle. In this connection, the method utilizes the head wind of a motor vehicle in order to automatically change the heat transfer properties of the air cushion as a function of the driving speed of the motor vehicle, if the head wind moves the fibers 5 because of their air resistance. In this connection, the method produces a particularly good shielding of the internal combustion engine, in particular, in the case of a cold start and a low start-up speed. The method thereby makes it possible to improve the cold-start behavior of the internal combustion engine, by achieving a faster warm-up of the internal combustion engine.
  • In another embodiment of the method according to the invention, several damping elements are implemented as fibers having shape-changing properties, which are adjusted by way of a thermal and/or electrical control that turns them on, which is preferably imparted by way of the carrier layer. Therefore the fibers can be adjusted actively and in a targeted manner, independent of the head wind or the influence of gravity, so that an adjustment of the heat and noise conduction properties in accordance with current requirements is made possible at any time. Fibers that are adjustable by means of piezo effects, bimetal effects, and/or memory effects are preferred. A turn-on control by way of the carrier layer allows simultaneous and parallel turn-on control of all the damping elements.
  • In another embodiment of the method according to the invention, according to FIGS. 3 and 4, several damping elements are implemented as movably mounted honeycomb elements 7, 8, 10 that are adjusted in their position and/or orientation by way of a carrier layer 3′, 3″ that can be moved. The honeycomb elements are implemented as hollow bodies that are stable in shape, to a great extent, which are connected with the carrier layer or articulated on it. The honeycomb elements are preferably filled with air or another gas that conducts heat poorly. In addition, a certain air cushion 6 is provided in the region of the honeycomb elements 7, 8, which cushion is surrounded by the honeycomb elements 7, 8 at least in certain segments. By adjusting the honeycomb elements, it is therefore also possible to adjust the air cushion. On the other hand, according to FIG. 4, sharply defined air cushions 9 can be assigned to honeycomb elements 10, but these are also adjustable by a movement/adjustment of the honeycomb elements 10 (indicated by the arrows 11).
  • The characteristics of the exemplary embodiments of the device according to the invention, which are described merely as examples, and of the method which is to be understood analogously, can be combined with one another in practically any desired manner, so that additional advantageous characteristics and combinations of characteristics can result.
  • Accordingly, while only a few embodiments of the present invention have been shown and described, it is obvious that many changes and modifications may be made thereunto without departing from the spirit and scope of the invention.

Claims (11)

1. A device for heat insulation and noise insulation of a component, comprising:
a first carrier layer adapted to be rigidly connected with the component to be insulated; and
an insulating layer having a plurality of individual damping elements that are individually connected with the carrier layer in an articulated manner;
wherein an air cushion is formed between the individual damping elements, within the insulating layer or between the carrier layer and the insulating layer, said cushion being changeable by adjusting several of said damping elements, the entire insulating layer, or the carrier layer.
2. Device according to claim 1, wherein several of said damping elements are elastic fibers made of a material having poor heat conduction properties, said fibers being adjustable by way of an air stream.
3. Device according to claim 1, wherein several of said damping elements are fibers having shape-changing properties, said fibers being adjustable by way of a thermal or electrical control that turns said fibers on.
4. Device according to claim 1, wherein several of said damping elements are movably mounted honeycomb elements that are adjustable in their position or orientation by way of said carrier layer.
5. Device according to claim 1, wherein several of said damping elements are honeycomb elements arranged to be immovable relative to the component to be insulated when said device is connected with the component to be insulated, and wherein movable honeycomb elements are mounted between the immovable honeycomb elements.
6. Device according to claim 1, wherein several of said damping elements are honeycomb elements arranged to be immovable relative to the component to be insulated when said device is connected to said component to be insulated, and wherein the immovable honeycomb elements demonstrate shape-changing properties and can be adjusted by a thermal or electrical turn-on control imparted by way of the carrier layer.
7. Device according to claim 1, wherein the insulating layer has several air pockets separated from one another and wherein one of said damping elements is arranged in at least one of the air pockets.
8. A method for providing heat insulation or noise insulation in motor vehicles, comprising;
connecting a carrier layer with a component to be insulated; and
individually connecting a plurality of individual damping elements with the carrier layer to form an insulating layer,
wherein an air cushion is formed between the individual damping elements, within the insulating layer or between the carrier layer and the insulating layer, which cushion is changed by adjusting several damping elements, the entire insulating layer or the carrier layer.
9. Method according to claim 8, wherein several of said damping elements are elastic fibers made of a material having poor heat conduction properties, which fibers are adjustable by way of an air stream.
10. Method according to claim 8, wherein several of said damping elements are fibers having shape-changing properties, which are adjusted by way of a thermal or electrical control that turns them on.
11. Method according to claim 8, wherein several of said damping elements are implemented as movably mounted honeycomb elements that are adjusted in their position or orientation by way of a carrier layer that can be turned on or moved.
US10/878,879 2003-06-26 2004-06-28 Device and method for heat and noise insulation of motor vehicles Abandoned US20070169991A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10328680.2 2003-06-26
DE10328680A DE10328680A1 (en) 2003-06-26 2003-06-26 Apparatus and method for heat and / or sound insulation in motor vehicles

Publications (1)

Publication Number Publication Date
US20070169991A1 true US20070169991A1 (en) 2007-07-26

Family

ID=33515085

Family Applications (1)

Application Number Title Priority Date Filing Date
US10/878,879 Abandoned US20070169991A1 (en) 2003-06-26 2004-06-28 Device and method for heat and noise insulation of motor vehicles

Country Status (3)

Country Link
US (1) US20070169991A1 (en)
DE (1) DE10328680A1 (en)
FR (1) FR2856771B1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090301810A1 (en) * 2008-06-06 2009-12-10 Toyota Motor Engineering & Manufacturing North America, Inc. Adjustable Sound Panel
US7757808B1 (en) * 2009-02-04 2010-07-20 Gm Global Technology Operations, Inc. Noise reduction system
US20100192902A1 (en) * 2007-09-10 2010-08-05 Honda Motor Co., Ltd. Cover member to engines
US20190162291A1 (en) * 2017-11-28 2019-05-30 Dana Canada Corporation Dual function axle thermal management system

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008003721B4 (en) 2008-01-09 2014-02-13 Audi Ag Heat shield for a motor vehicle
DE102017202815B4 (en) 2017-02-22 2021-03-18 Audi Ag Method and system for regulating a temperature of a component of a vehicle
DE102017222395B4 (en) 2017-12-11 2021-11-11 Audi Ag Insulation system for acoustic insulation of noises on a body surface and motor vehicle with such an insulation system
DE102018202129B3 (en) 2018-02-12 2019-06-13 Audi Ag Temperature control system for a drive device and motor vehicle
DE102018202130B4 (en) * 2018-02-12 2021-02-04 Audi Ag Component for a motor vehicle and motor vehicle
DE102021119103A1 (en) 2021-07-23 2023-01-26 Bayerische Motoren Werke Aktiengesellschaft Motor vehicle with a switchable insulating layer between the passenger compartment and the traction battery

Citations (46)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1913249A (en) * 1930-12-02 1933-06-06 Kenyon B Conger Jr Ceiling for sound correction
US2142463A (en) * 1937-11-10 1939-01-03 Upson Co Damping means for automobile tops and the like
US2166848A (en) * 1937-02-06 1939-07-18 Theodore M Prudden Panel damping structure
US2192516A (en) * 1937-05-28 1940-03-05 Woodall Industries Inc Insulation sheet material
US2779429A (en) * 1953-07-17 1957-01-29 Simon Ruth Mazer Sound absorbing structure
US2840179A (en) * 1954-06-17 1958-06-24 Miguel C Junger Sound-absorbing panels
US3020184A (en) * 1955-09-30 1962-02-06 Patent & Licensing Corp Sound dampening composition
US3103255A (en) * 1960-12-23 1963-09-10 Applic Gomma Antivibranti S P Sound-absorbing wall covering
US3501878A (en) * 1966-11-08 1970-03-24 Charles Segal Sound and heat insulating panels
US3822763A (en) * 1972-10-02 1974-07-09 Caterpillar Tractor Co Anti-noise rocker arm cover
US4167598A (en) * 1977-05-24 1979-09-11 Logan Paul A Heat and sound insulating panel
US4170674A (en) * 1976-07-21 1979-10-09 Nissan Motor Company, Ltd. Composite board structure using a corrugated fiberboard and a method of and an apparatus for producing the composite board structure
US4223073A (en) * 1978-10-30 1980-09-16 Minnesota Mining And Manufacturing Company High-temperature damping composite
US4420062A (en) * 1981-06-26 1983-12-13 Nissan Motor Co., Ltd. Automotive vehicle noise reduction device
US4705139A (en) * 1985-09-06 1987-11-10 Dr. Alois Stankiewicz Gmbh Sound insulation part for surfaces
US4709781A (en) * 1984-11-16 1987-12-01 Austria Metall Aktiengesellschaft Sound-damping and heat-insulating composite plate
US4851271A (en) * 1987-10-01 1989-07-25 Soundwich Incorporated Sound dampened automotive enclosure such as an oil pan
US4966799A (en) * 1986-09-26 1990-10-30 Matec Holding Ag Noise-reducing structural element
US5041324A (en) * 1988-04-23 1991-08-20 Vorwerk & Co. Interholding Gmbh Woven fabric structure and process of manufacture
US5088576A (en) * 1988-07-16 1992-02-18 E.A.P. Akustik Gmbh Mass and spring systems for soundproofing
US5146721A (en) * 1991-07-01 1992-09-15 Monolite S.R.L. Wall panel with thermoacoustic insulation characteristics
US5160816A (en) * 1990-10-17 1992-11-03 Systems Development Group Two dimensional sound diffusor
US5196253A (en) * 1990-01-22 1993-03-23 Matec Holdikng Ag Sound absorbing heat shield with perforate support layer
US5245141A (en) * 1990-09-03 1993-09-14 Matec Holding Ag Sound-insulating and sound-damping composite structure
US5283398A (en) * 1989-12-26 1994-02-01 Tsuchiya Mfg. Co., Ltd. Resonator type silencer
US5317113A (en) * 1992-07-01 1994-05-31 Industrial Acoustics Company, Inc. Anechoic structural elements and chamber
US5334806A (en) * 1991-10-18 1994-08-02 Transco Inc. Temperature and sound insulated panel assembly
US5550338A (en) * 1990-11-12 1996-08-27 Matec Holding Ag Disposable thermal shield
US5567922A (en) * 1991-04-26 1996-10-22 Matec Holding Ag Sound insulating vehicle body part
US5834711A (en) * 1997-07-09 1998-11-10 Johns Manville International, Inc. Sound control through resonance damping
US5851626A (en) * 1997-04-22 1998-12-22 Lear Corporation Vehicle acoustic damping and decoupling system
US5996730A (en) * 1997-05-27 1999-12-07 Hecralmat Heat shield with acoustic insulation
US6202786B1 (en) * 1996-12-17 2001-03-20 Faist Automotive Gmbh & Co. Kg Absorber to absorb acoustic sound waves and method for its production
US20010001433A1 (en) * 1999-09-14 2001-05-24 Chi-Shih Lee Easy to adhere sound absoring mat with fluffy outer layer
US6302466B1 (en) * 1998-03-12 2001-10-16 Rieter Automotive (International) Ag Vibration-damping, noise-reducing, heat-shielding vehicle trim
US6508331B1 (en) * 1999-09-16 2003-01-21 Siemens Canada Limited Variable resonator
US6550440B1 (en) * 2002-01-17 2003-04-22 Ford Global Technologies, Llc Acoustic suppression arrangement for a component undergoing induced vibration
US6581720B1 (en) * 2001-11-30 2003-06-24 Dana Corporation Noise attenuating insulated heat shield
US6698390B1 (en) * 2003-01-24 2004-03-02 Visteon Global Technologies, Inc. Variable tuned telescoping resonator
US6878432B2 (en) * 1999-10-26 2005-04-12 Kabushiki Kaisha Kobe Seiko Sho Panel
US6966402B2 (en) * 2003-06-02 2005-11-22 Dana Corporation Acoustical heat shield
US6983821B2 (en) * 1999-10-01 2006-01-10 Awi Licensing Company Acoustical panel having a honeycomb structure and method of making the same
US7011181B2 (en) * 2003-07-08 2006-03-14 Lear Corporation Sound insulation system
US20060124387A1 (en) * 2002-11-18 2006-06-15 Jurgen Berbner Soundproof thermal shield
US20060169240A1 (en) * 2005-02-01 2006-08-03 Hanner David T Apparatus and method for forced response acoustic isolation enclosure in cast aluminum oil pan
US7308965B2 (en) * 2002-03-19 2007-12-18 Ecole Polytechnique Noise abatement wall

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3010256A1 (en) * 1980-03-17 1981-10-15 Grünzweig + Hartmann Montage GmbH, 6700 Ludwigshafen WARMEDAEMM BLOCK IN BANZMETALBAUILDUNG
DE3680793D1 (en) * 1986-11-14 1991-09-12 A4Gm Energet Gepgyarto Leany LAYERED HEAT DAM.
DE4015871A1 (en) * 1990-05-17 1991-11-21 Bayerische Motoren Werke Ag Front spoiler for vehicle for random vortex sepn. - has comb shaped rubber elements or nylon bristles to reduce wind noise
DE19821532A1 (en) * 1998-05-14 1999-11-25 Hp Chemie Pelzer Res & Dev Lower cost, heat and noise absorbing shroud, manufacturing method and use of shroud in an engine vehicle compartment
DE19959089C2 (en) * 1999-12-08 2003-11-13 Borgers Johann Gmbh Co Kg Sound-insulating unit in vehicles or furniture containing heat-generating sound sources
DE10048339A1 (en) * 2000-09-29 2002-04-25 Siemens Ag Room thermal insulation device has pressure of hollow space within thermal insulation element controlled for adjusting insulation characteristics

Patent Citations (46)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1913249A (en) * 1930-12-02 1933-06-06 Kenyon B Conger Jr Ceiling for sound correction
US2166848A (en) * 1937-02-06 1939-07-18 Theodore M Prudden Panel damping structure
US2192516A (en) * 1937-05-28 1940-03-05 Woodall Industries Inc Insulation sheet material
US2142463A (en) * 1937-11-10 1939-01-03 Upson Co Damping means for automobile tops and the like
US2779429A (en) * 1953-07-17 1957-01-29 Simon Ruth Mazer Sound absorbing structure
US2840179A (en) * 1954-06-17 1958-06-24 Miguel C Junger Sound-absorbing panels
US3020184A (en) * 1955-09-30 1962-02-06 Patent & Licensing Corp Sound dampening composition
US3103255A (en) * 1960-12-23 1963-09-10 Applic Gomma Antivibranti S P Sound-absorbing wall covering
US3501878A (en) * 1966-11-08 1970-03-24 Charles Segal Sound and heat insulating panels
US3822763A (en) * 1972-10-02 1974-07-09 Caterpillar Tractor Co Anti-noise rocker arm cover
US4170674A (en) * 1976-07-21 1979-10-09 Nissan Motor Company, Ltd. Composite board structure using a corrugated fiberboard and a method of and an apparatus for producing the composite board structure
US4167598A (en) * 1977-05-24 1979-09-11 Logan Paul A Heat and sound insulating panel
US4223073A (en) * 1978-10-30 1980-09-16 Minnesota Mining And Manufacturing Company High-temperature damping composite
US4420062A (en) * 1981-06-26 1983-12-13 Nissan Motor Co., Ltd. Automotive vehicle noise reduction device
US4709781A (en) * 1984-11-16 1987-12-01 Austria Metall Aktiengesellschaft Sound-damping and heat-insulating composite plate
US4705139A (en) * 1985-09-06 1987-11-10 Dr. Alois Stankiewicz Gmbh Sound insulation part for surfaces
US4966799A (en) * 1986-09-26 1990-10-30 Matec Holding Ag Noise-reducing structural element
US4851271A (en) * 1987-10-01 1989-07-25 Soundwich Incorporated Sound dampened automotive enclosure such as an oil pan
US5041324A (en) * 1988-04-23 1991-08-20 Vorwerk & Co. Interholding Gmbh Woven fabric structure and process of manufacture
US5088576A (en) * 1988-07-16 1992-02-18 E.A.P. Akustik Gmbh Mass and spring systems for soundproofing
US5283398A (en) * 1989-12-26 1994-02-01 Tsuchiya Mfg. Co., Ltd. Resonator type silencer
US5196253A (en) * 1990-01-22 1993-03-23 Matec Holdikng Ag Sound absorbing heat shield with perforate support layer
US5245141A (en) * 1990-09-03 1993-09-14 Matec Holding Ag Sound-insulating and sound-damping composite structure
US5160816A (en) * 1990-10-17 1992-11-03 Systems Development Group Two dimensional sound diffusor
US5550338A (en) * 1990-11-12 1996-08-27 Matec Holding Ag Disposable thermal shield
US5567922A (en) * 1991-04-26 1996-10-22 Matec Holding Ag Sound insulating vehicle body part
US5146721A (en) * 1991-07-01 1992-09-15 Monolite S.R.L. Wall panel with thermoacoustic insulation characteristics
US5334806A (en) * 1991-10-18 1994-08-02 Transco Inc. Temperature and sound insulated panel assembly
US5317113A (en) * 1992-07-01 1994-05-31 Industrial Acoustics Company, Inc. Anechoic structural elements and chamber
US6202786B1 (en) * 1996-12-17 2001-03-20 Faist Automotive Gmbh & Co. Kg Absorber to absorb acoustic sound waves and method for its production
US5851626A (en) * 1997-04-22 1998-12-22 Lear Corporation Vehicle acoustic damping and decoupling system
US5996730A (en) * 1997-05-27 1999-12-07 Hecralmat Heat shield with acoustic insulation
US5834711A (en) * 1997-07-09 1998-11-10 Johns Manville International, Inc. Sound control through resonance damping
US6302466B1 (en) * 1998-03-12 2001-10-16 Rieter Automotive (International) Ag Vibration-damping, noise-reducing, heat-shielding vehicle trim
US20010001433A1 (en) * 1999-09-14 2001-05-24 Chi-Shih Lee Easy to adhere sound absoring mat with fluffy outer layer
US6508331B1 (en) * 1999-09-16 2003-01-21 Siemens Canada Limited Variable resonator
US6983821B2 (en) * 1999-10-01 2006-01-10 Awi Licensing Company Acoustical panel having a honeycomb structure and method of making the same
US6878432B2 (en) * 1999-10-26 2005-04-12 Kabushiki Kaisha Kobe Seiko Sho Panel
US6581720B1 (en) * 2001-11-30 2003-06-24 Dana Corporation Noise attenuating insulated heat shield
US6550440B1 (en) * 2002-01-17 2003-04-22 Ford Global Technologies, Llc Acoustic suppression arrangement for a component undergoing induced vibration
US7308965B2 (en) * 2002-03-19 2007-12-18 Ecole Polytechnique Noise abatement wall
US20060124387A1 (en) * 2002-11-18 2006-06-15 Jurgen Berbner Soundproof thermal shield
US6698390B1 (en) * 2003-01-24 2004-03-02 Visteon Global Technologies, Inc. Variable tuned telescoping resonator
US6966402B2 (en) * 2003-06-02 2005-11-22 Dana Corporation Acoustical heat shield
US7011181B2 (en) * 2003-07-08 2006-03-14 Lear Corporation Sound insulation system
US20060169240A1 (en) * 2005-02-01 2006-08-03 Hanner David T Apparatus and method for forced response acoustic isolation enclosure in cast aluminum oil pan

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100192902A1 (en) * 2007-09-10 2010-08-05 Honda Motor Co., Ltd. Cover member to engines
US8770169B2 (en) * 2007-09-10 2014-07-08 Honda Motor Co., Ltd. Cover member to engines
US20090301810A1 (en) * 2008-06-06 2009-12-10 Toyota Motor Engineering & Manufacturing North America, Inc. Adjustable Sound Panel
US7705522B2 (en) * 2008-06-06 2010-04-27 Toyota Motor Engineering & Manufacturing North America, Inc. Adjustable sound panel with electroactive actuators
US7757808B1 (en) * 2009-02-04 2010-07-20 Gm Global Technology Operations, Inc. Noise reduction system
US20100193283A1 (en) * 2009-02-04 2010-08-05 Gm Global Technology Operations, Inc. Noise reduction system
US20190162291A1 (en) * 2017-11-28 2019-05-30 Dana Canada Corporation Dual function axle thermal management system
US10920869B2 (en) * 2017-11-28 2021-02-16 Dana Canada Corporation Dual function axle thermal management system

Also Published As

Publication number Publication date
FR2856771B1 (en) 2006-04-14
FR2856771A1 (en) 2004-12-31
DE10328680A1 (en) 2005-01-13

Similar Documents

Publication Publication Date Title
US20070169991A1 (en) Device and method for heat and noise insulation of motor vehicles
US20130146376A1 (en) Engine encapsulation structure of vehicle
CN100385098C (en) Exhaust device for vehicle engine
CN103967565A (en) Heat Exchanger Of An Internal Combustion Engine
JP4806126B2 (en) Sound absorbing device and sound absorbing method
US6523343B2 (en) Air gap insulated exhaust manifold assembly for an internal combustion engine and a method of making same
CN101311505B (en) Exhaust system
US20080315634A1 (en) Motor Vehicle Seat Provided with an Air Supply Device
CA1169398A (en) Vehicle cabin spot heater
JP2013536114A (en) Fuel tank made of thermoplastic resin material
JP2015514186A (en) Thermostat device and cooling system
US8453792B2 (en) Exhaust system and corresponding support structure
US20150042086A1 (en) Mounting structure of intercooler pipe
CN105723165B (en) For tieing up the four processes circulation for strangling Mir's heat pump
KR101264954B1 (en) Air distribution duct in the passenger compartment of a motor vehicle
US11260914B2 (en) Holder for an interior trim part, and vehicle body structure
WO2005076844A2 (en) Air duct outlets having return air passageways that facilitate oscillating air flow
KR20160021452A (en) Element for cooling the air of a motor vehicle
JP2009234400A (en) Sound attenuation duct
US10947879B2 (en) Exhaust heat recovery system
CN203198683U (en) Overhead type air conditioner with double air duct systems for automobile
CN107487147B (en) Vehicle interior temperature regulating device and vehicle
JP6975837B1 (en) Holding structure of the hot water pipe of the air conditioner for vehicles
JP2016098726A (en) Engine room ventilation structure
JP6521429B2 (en) Powertrain structure of vehicle

Legal Events

Date Code Title Description
AS Assignment

Owner name: DAIMLERCHRYSLER AG, GERMANY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:ULRICH BERTSCH-1;REEL/FRAME:015758/0578

Effective date: 20040712

AS Assignment

Owner name: DAIMLER AG, GERMANY

Free format text: CHANGE OF NAME;ASSIGNOR:DAIMLERCHRYSLER AG;REEL/FRAME:020442/0652

Effective date: 20071019

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION