PL98297B1 - Damping element as an element, especially for exhaust mufflers - Google Patents

Damping element as an element, especially for exhaust mufflers Download PDF

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Publication number
PL98297B1
PL98297B1 PL18728276A PL18728276A PL98297B1 PL 98297 B1 PL98297 B1 PL 98297B1 PL 18728276 A PL18728276 A PL 18728276A PL 18728276 A PL18728276 A PL 18728276A PL 98297 B1 PL98297 B1 PL 98297B1
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PL
Poland
Prior art keywords
cylinder
damping element
cut
exhaust mufflers
damping
Prior art date
Application number
PL18728276A
Other languages
Polish (pl)
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
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Priority to PL18728276A priority Critical patent/PL98297B1/en
Publication of PL98297B1 publication Critical patent/PL98297B1/en

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  • Exhaust Silencers (AREA)

Description

Przedmiotem wynalazku jest element tlumiacy stosowany jako wklad do tlumików wydechu dla samocho¬ dów osobowych.Dotychczas stosowane wklady do tlumików wydechu o przekroju poprzecznym w ksztalcie elipsy produ¬ kowano byly na bazie welny mineralnej otrzymywanej z zuzla, do której jako lepiszcza stosowano zywice F—50 w ilosci 12% wagowych. W czasie eksploatacji tych wkladów, stwierdzono ubytki masy wkladu powstale w wyniku wyrywania wlókienek mineralnych z elementu -tlumiacego, pedem spalin uchodzacych perforowana rura wydechowa.Istota wynalazku polega na zastosowaniu w elemencie tlumiacym welny z wlókna mineralnego korzystnie bazaltowego lub supercienkiego wlókna szklanego o macie objetosciowej do 200 kg/m3, o grubosci wlókien do /im i dlugosci wlókien 10 mm, zawierajacego od 3—4% wagowych zywicy fenolowo-formaldehydowej. Ele¬ ment tlumiacy ma ksztalt cylindra wykonanego z welny mineralnej lub szklanej zawierajacej jako lepiszcze zywice fenolowo-formaldehydowa. Na srednicy obwodu, cylinder jest przeciety wzdluz w ten sposób, ze z jednej strony przeciecie scianki cylindra jest calkowite, natomiast ze strony przeciwleglej scianka jest nacieta do okolo jednej trzeciej grubosci. Umozliwia to nalozenie elementu tlumiacego na rure wydechowa, bez potrzeby rozcina¬ nia cylindra tworzacego element tlumiacy na dwie polowy. Wewnetrzna powierzchnia cylindra jest pokryta korzystnie warstwa welonu szklanego.Rozwiazanie wedlug wynalazku jest przedstawione w przykladzie wykonania na rysunku.Element tlumiacy ma ksztalt cylindra 1 wykonanego z welny bazaltowej o masie objetosciowej 136 kg/m3, o grubosci wlókien 7 /im, o dlugosci wlókien 10 mm, z zawartoscia 3,2% wagowych zywicy fenolo¬ wo-formaldehydowej. Na srednicy obwodu cylinder 1 jest przeciety wzdluz w ten sposób, ze z jednej strony przeciecie 2 scianki cylindra 1 jest calkowite, natomiast ze strony przeciwleglej scianka ma naciecie 3 do jednej trzeciej grubosci. Wewnetrzna powierzchnia cylindra 1 jest pokryta warstwa welonu szklanego 4.2 98 297 Element tlumiacy wedlug wynalazku jest trwalszy w uzytkowaniu. Przez zastosowanie mniejszej ilosci lepiszcza, posiada mniejsza kruchosc i zwiekszona odpornosc na dzialanie wibracji. Zastosowanie warstwy welo¬ nu szklanego na wewnetrznej powierzchni elementu tlumiacego, tj. na powierzchni styku z perforowana rura wydechu, zapobiega wyrywaniu wlókien szklanych z elementu tlumiacego. PLThe subject of the invention is a damping element used as an insert for exhaust mufflers for passenger cars. So far used inserts for exhaust mufflers with a cross-section in the shape of an ellipse were produced on the basis of mineral wool obtained from decant, for which F-50 resins were used as binders. in an amount of 12% by weight. During the operation of these cartridges, losses in the weight of the cartridge were found as a result of tearing out mineral fibers from the damper element, a perforated exhaust pipe with the exhaust fumes leaving the exhaust pipe. 200 kg / m3, with a fiber thickness of up to / m and a fiber length of 10 mm, containing from 3 to 4% by weight of phenol-formaldehyde resin. The damping element has the shape of a cylinder made of a mineral or glass wool containing phenol-formaldehyde resin as a binder. In the circumference of the circumference, the cylinder is cut lengthwise such that the cut of the cylinder wall is complete on one side, and the opposite wall is cut to about one third of its thickness. This makes it possible to fit a damping element on the exhaust pipe without the need to cut the cylinder forming the damping element into two halves. The inner surface of the cylinder is preferably covered with a layer of glass veil. The solution according to the invention is shown in the embodiment example in the drawing. The damping element has the shape of a cylinder 1 made of basalt wool with a volumetric mass of 136 kg / m3, a fiber thickness of 7 µm, a fiber length of 10 mm, containing 3.2% by weight of phenol-formaldehyde resin. At its circumference, the cylinder 1 is cut lengthwise in such a way that the cut 2 of the wall of the cylinder 1 is completely cut on the one side and the opposite wall has a cut 3 to one third of its thickness. The inner surface of the cylinder 1 is covered with a layer of glass veil 4.2 98 297 According to the invention, the damping element is more durable in use. By using less binder, it has less brittleness and increased resistance to vibration. The use of a layer of glass wool on the inner surface of the damping element, ie on the contact surface with the perforated exhaust pipe, prevents the glass fibers from tearing out of the damping element. PL

Claims (1)

Zastrzezenia patentowePatent claims 1. Element tlumiacy jako wklad zwlaszcza do tlumików wydechu wykonany z welny mineralnej w ksztal¬ cie cylindra, znamienny tym, ze welna mineralna zawiera od 3—4% wagowych zywicy fenolowo-formal- dehydowej. 2 Element wedlug zastrz. 1, znamienny tym, ze wewnetrzna powierzchnia cylindra (1) jest pokryta warstwa welonu szklanego (4). : I Prac. Poligraf. UP PRL naklad 120+18 Cena 45 zl PL1. A damping element, especially for exhaust silencers, made of cylinder-shaped mineral wool, characterized in that the mineral wool contains from 3 to 4% by weight of phenol-formaldehyde resin. 2 Element according to claim The method of claim 1, characterized in that the inner surface of the cylinder (1) is covered with a layer of glass veil (4). : I Prac. Typographer. UP PRL, circulation 120 + 18 Price PLN 45 PL
PL18728276A 1976-02-16 1976-02-16 Damping element as an element, especially for exhaust mufflers PL98297B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL18728276A PL98297B1 (en) 1976-02-16 1976-02-16 Damping element as an element, especially for exhaust mufflers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PL18728276A PL98297B1 (en) 1976-02-16 1976-02-16 Damping element as an element, especially for exhaust mufflers

Publications (1)

Publication Number Publication Date
PL98297B1 true PL98297B1 (en) 1978-04-29

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Family Applications (1)

Application Number Title Priority Date Filing Date
PL18728276A PL98297B1 (en) 1976-02-16 1976-02-16 Damping element as an element, especially for exhaust mufflers

Country Status (1)

Country Link
PL (1) PL98297B1 (en)

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