DE3226072A1 - Internal combustion engine silencer for exhaust systems using wrought aluminium products - Google Patents

Abstract

This additional application to the main application P 3108131.2 with the identical designation "Internal combustion engine silencer for exhaust systems using wrought aluminium products" improves the design of the main application and in particular introduces a new type of pipe element which increases the acoustic efficiency. The latter comprises a steel pipe, which is provided in sections with hollow aluminium profile sections, the intermediate spaces produced serving as resonators. The overall unit represents a high-grade, corrosion resistant aluminium silencer, which at the same time requires comparatively small dimensions and volumes.

Description

3description;

_λ 1ξ Zuoatzan. '. "eldiin.j to P 31 üS 121.2 improves this. Basis of the construction presented by the main notice primarily the use of the interior space (ö2), which is created by the endless Hir.grauJ (2) within the ■ inlet In Figures 1 and 3, this interior (62) is the loading space of a chain ladder which axially penetrates the device, in Figure k it (18) is already the first line stage of such a chain ladder (18 - 301 - 73) · New e: in this context, the gas routing element of a steel pipe, which (see. 512) with double walls that are subdivided by internal ribs, partial flow channels (57) are formed] Depending on the position of this construction, the steel tube either has the task of strengthening the hollow body or, above all, the functional task, between different hollow profiles] (cf. Figure 2: 5121 and 5122) to form acoustic resonators (623) * that achieve frequency-lowering effects o In this way, such a component can also be used for the gas throughput of other lines, provided that the thermal conditions allow the use of such an aluminum part ( e.g. also with intake silencers). At the outlet pipe of the device (622 in Fig.1 and Fig.3), the Au; be taken over to have the outer surface of an always bright chrome steel tube. The drawings are schematic. As a construction, FIG. 1 relates primarily to small amounts of gas, FIG. 3 to large amounts of gas, and FIG. K to industrial engines.

Claims (7)

Patent office Dr Leistritz D 5O4O 3rühl, Postfach 1166 Own reference: lei 3 3202 Applicant : Dr, Hans Karl Leistritz, 7 & 91 Küssaberg 2, ote-wiesen 3 Description; -1er registration ^ - : Bronnkn f bmuiv-.hin ^ n -: ',' · '.!'! 1.1 M .-:;.! "« Τ for m;,. ··· - •in! ■■ / ■ .'μι ι «i '. 7 «! Γ7 / '· ιιΊιιπ V'jri / i I um i π, urn —M.-1 ί.' ,: '. n _r ' to P <l location 1i1.,: Claims rtJ internal combustion engine muffler according to claim 1 of P 31 08 131 * 2, characterized in that the rinsed interior (62) of the annular channel (2) is part of a spatial chain (62-18-30 -'73), which is the structural unit of an acoustic Chain conductor represents and the cooled exhaust gas quantity with an inner traverse; of the entire device to the free atmosphere. 2. Apparatus according to claim 1, characterized in that the exhaust gas throughput through the flushed interior (62.) either the entire amount of exhaust gas (Fig. 1) or only a part of the. Division into subsets includes (Fig. 3) 3. Device according to one of the preceding claims, characterized in that dc.5. the pipe-like conduction paths of the chain conductor consist of a sum of partial flow lines that are formed between the double wall of a hollow profile interior (512, 511) by means of intermediate ribs (56, 57) and that the exhaust gas throughput also takes place in the hollow profile interior. k. Device according to one of the preceding claims, characterized in that formed from carbon profiles. Line paths of the inner acoustic chain conductor either completely or only partially fill the interior of a steel pipe (Fig. 1: 621 and 622; Fig. 2: 623; Fig. 3: 622). 5. Device according to one of the preceding claims, characterized in that also the interior of a hollow profile (5II in Figure 3) in whole or in part can be penetrated by a steel pipe (18). o. device after Einoir. of the preceding claims characterized by the fact that in the case of a double chain ladder (see Fig. k) the flushed insenra'n (c .;) can also represent the direct line path of one of the chain ladders. 7. Device according to one of the preceding claims, characterized in that jer outlet closing body alc AluminiurnpreÜ— or 'juilteil with «iner L-. itcchiene in lines. of the primary hollow profile (52) ei n /; cii. £ t νηύ here Jure h a cross section. ^ narrower Leitunr; rj _t ; rupp'j forms t (ν ^ - '/ 1> !?)