DE1127733B - Sound and vibration insulation of the internal combustion engine of a motor vehicle with foam plastics - Google Patents
Sound and vibration insulation of the internal combustion engine of a motor vehicle with foam plasticsInfo
- Publication number
- DE1127733B DE1127733B DEM35499A DEM0035499A DE1127733B DE 1127733 B DE1127733 B DE 1127733B DE M35499 A DEM35499 A DE M35499A DE M0035499 A DEM0035499 A DE M0035499A DE 1127733 B DE1127733 B DE 1127733B
- Authority
- DE
- Germany
- Prior art keywords
- sound
- internal combustion
- combustion engine
- motor vehicle
- plastics
- 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.)
- Pending
Links
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
- B60R13/0838—Insulating elements, e.g. for sound insulation for engine compartments
Landscapes
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)
Description
Schall- und Schwingungsisolierung der Brennkraftmaschine eines Kraftfahrzeuges mit Schaumkunststoffen Die Erfindung bezieht sich auf eine Schall- und Schwingungsisolierung der Brennkraftmaschine eines Kraftfahrzeuges mit Schaumkunststoffen, wie Polyäthylen und anderen Kunststoffen, zur Dämpfung des Verkehrslärmes. Um das den Verkehrslärm verursachende Geräusch der laufenden Brennkraftmaschine eines Kraftfahrzeuges zu dämpfen, werden maschinentechnisch alle Maßnahmen getroffen. Trotzdem ist aber insbesondere bei den großen Motoren der Lastkraftwagen das erzeugte Geräusch noch zu stark. Man hat deshalb vorgeschlagen, auf die Innenseiten des Motorgehäuses Schallschluckstoffe in Schichten aufzubringen. Die Gesamtstärke einer solchen aus Kunststoffen bestehenden Schallisolierung ist jedoch so gering, daß damit wohl eine gewisse Schalldämpfung, aber keine wirksame Verhinderung des Verkehrslärmes erreicht wird. Auch eine weiter bekanntgewordene Maßnahme, die Motorverkleidung doppelwandig auszuführen und den Hohlraum zwischen den Blechen mit einem schallisolierenden Werkstoff auszufüllen, bringt nur einen Teilerfolg.Sound and vibration insulation of the internal combustion engine of a motor vehicle with foam plastics The invention relates to sound and vibration insulation the internal combustion engine of a motor vehicle with foamed plastics such as polyethylene and other plastics to dampen traffic noise. About the traffic noise causing noise of the running internal combustion engine of a motor vehicle attenuate, all measures are taken in terms of machine technology. Nevertheless, it is special the noise produced by the large engines of the trucks is still too strong. Man has therefore proposed sound-absorbing substances on the inside of the motor housing to be applied in layers. The overall strength of one made of plastics However, sound insulation is so low that a certain amount of sound absorption, but no effective prevention of traffic noise is achieved. Another one too known measure to run the engine cover double-walled and the To fill the cavity between the sheets with a sound-insulating material, only brings partial success.
Die Erfindung zeigt nun einen Weg, eine bessere und ausreichende Schall- und Schwingungsisolierung der Brennkraftmaschine eines Kraftfahrzeuges unter Verwendung von Schaumkunststoffen, wie Polyäthylen u. dgl., zur Dämpfung des Verkehrslärmes zu schaffen. Sie besteht darin, daß der gesamte oder annähernd der gesamte Hohlraum zwischen der Motorhaube und den die Schall- und Schwingungsquellen darstellenden Brennkraftmaschinenteilen mit dem Schaumkunststoff ausgefüllt ist. Hierbei werden die Teile, die zur Ausübung ihrer Funktion beweglich bleiben, und die Teile, die zugänglich sein müssen, vor der Herstellung der Isolierung durch Hauben, Manschetten, Umhüllungen u. dgl. abgedeckt. Der Schaumstoff kann vorgeformt eingesetzt werden. Er kann aber auch eingegossen oder eingespritzt werden.The invention now shows a way to achieve a better and sufficient sound and vibration isolation of the internal combustion engine of an automobile using Foam plastics such as polyethylene and the like to dampen traffic noise to accomplish. It consists in that the entire or almost the entire cavity between the bonnet and the sources of sound and vibration Internal combustion engine parts is filled with the foam plastic. Here will be the parts that remain movable in order to carry out their function, and the parts that must be accessible before the insulation is made using hoods, sleeves, Coverings and the like covered. The foam can be used preformed. But it can also be poured in or injected.
Die Verarbeitung der vorgenannten Kunststoffe ist allerorts ohne besondere Vorsichts- oder Schutzmaßnahmen möglich, da diese physiologisch einwandfrei sind. Die Stoffe sind weder in flüssigem noch in festem Zustand brennbar. Das Ausfüllen bzw. Ausschäumen der zu isolierenden Räume mit den Kunststoffen wird kalt vorgenommen, es ist daher einfach und unabhängig von der Lufttemperatur und Witterung. Es benötigt keine besonderen Werkstätten und keinerlei Vorrichtungen. Bei einer etwaigen Reparatur der Brennkraftmaschine kann die Isolierung vorher leicht entfernt werden. Sie wirdThe processing of the aforementioned plastics is everywhere without special Precautionary or protective measures are possible, as these are physiologically sound. The substances are neither flammable in liquid nor in solid state. Filling out or foaming of the rooms to be insulated with the plastics is carried out cold, it is therefore easy and independent of the air temperature and weather. It needs no special workshops and no devices whatsoever. In the event of a repair the internal combustion engine, the insulation can be easily removed beforehand. she will
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEM35499A DE1127733B (en) | 1957-10-03 | 1957-10-03 | Sound and vibration insulation of the internal combustion engine of a motor vehicle with foam plastics |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEM35499A DE1127733B (en) | 1957-10-03 | 1957-10-03 | Sound and vibration insulation of the internal combustion engine of a motor vehicle with foam plastics |
Publications (1)
Publication Number | Publication Date |
---|---|
DE1127733B true DE1127733B (en) | 1962-04-12 |
Family
ID=7302311
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEM35499A Pending DE1127733B (en) | 1957-10-03 | 1957-10-03 | Sound and vibration insulation of the internal combustion engine of a motor vehicle with foam plastics |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE1127733B (en) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH167282A (en) * | 1932-11-03 | 1934-02-15 | Oerlikon Maschf | Device for reducing airborne noise from electrical machines. |
DE729380C (en) * | 1940-02-25 | 1942-12-15 | Eberspaecher J | Process for the production of body-borne sound-absorbing layers on the walls of rooms in which sound waves occur |
GB567567A (en) * | 1943-11-19 | 1945-02-20 | Bolinder Munktell | Improvements in or relating to internal combustion engines |
DE873659C (en) * | 1951-06-08 | 1953-04-16 | Henschel & Sohn G M B H | Coverings for engines installed in the interior of motor vehicles |
-
1957
- 1957-10-03 DE DEM35499A patent/DE1127733B/en active Pending
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH167282A (en) * | 1932-11-03 | 1934-02-15 | Oerlikon Maschf | Device for reducing airborne noise from electrical machines. |
DE729380C (en) * | 1940-02-25 | 1942-12-15 | Eberspaecher J | Process for the production of body-borne sound-absorbing layers on the walls of rooms in which sound waves occur |
GB567567A (en) * | 1943-11-19 | 1945-02-20 | Bolinder Munktell | Improvements in or relating to internal combustion engines |
DE873659C (en) * | 1951-06-08 | 1953-04-16 | Henschel & Sohn G M B H | Coverings for engines installed in the interior of motor vehicles |
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