GB317353A - Improvements in and relating to exhaust silencers, particularly for motors of power vehicles - Google Patents

Abstract

317,353. Werner, K. May 14, 1928. Exhaust silencers. - The exhaust pipe is divided bv one or more partition walls into two or more chambers which lie one behind the other in the axial direction of the exhaust pipe or are beside one another, which chambers are connected together in series or parallel by tubular connection which are arranged at such a distance from the transverse partition walls that gas or air cushions are formed between them and the partition walls. A partition B, Fig. 1, divides the exhaust pipe A into two chambers which are connected by tubular members C, D and a pipe H. Air or gas cushions are formed between each of the members C, D and the partition B. The pipe G may contain further baffling means e.g. a semi-circular partition F and a baffle plate E. The pipe G is placed not immediately under the pipe A but to one side thereof as in Fig. 2. The connecting pipe may be at right angles to the exhaust pipe and may be employed on a motor bicycle to heat the footrests. In a further modification, Figs. 3 - - 6, a tubular member K is inserted in the exhaust pipe and is subdivided bv partitions L<1>, L<2> into four sector-shaped chambers S', S<2>, S<3>, S<4>, connected in series by means of tubular members R<1>, R<2>, R<3>. The chamber S<1> is open to one side of the exhaust pipe and the chamber S<4> to the other side, while the two remaining chambers are closed laterally by transverse walls O<1>, O<2>. The exhaust gases take the course indicated by the arrows in Figs. 3, 4, entering first the chamber S<1> and leaving by the chamber S<4>. In a further modification the member K is subdivided into three chambers the walls of which are at 120‹. In a still further modification the member K is again divided into four chambers which are connected partly in parallel and partly in series or, if desired, only in parallel by means of tubular connections. The number of chambers into which the exhaust pipe is divided can be varied, and several divided tubular members could be inserted in the exhaust pipe.