FIELD: engine engineering. SUBSTANCE: acoustically adjusted silencing chamber is interposed between a sound emitter and ambient to be protected from noise. The chamber has a ring opening in plane of outlet opening of an exhaust pipe so creating explicit source of undesirable noise and silencing noise. The exhaust pipe, silencing chamber and silencing reproducer are received within the same case made of sheet metal. EFFECT: enhanced efficiency of silencing. 8 cl, 12 dwg, 1 tbl
Authors
Dates
1994-03-15—Published
1989-10-18—Filed