SILENCER Russian patent published in 2006 - IPC F02K3/04 F02C7/24 

FIELD: engine engineering.

SUBSTANCE: silencer comprises sound-absorbing lining mounted on the walls of the passage having three sections. The first section whose length is 1.0 ± 0.2 of the passage height has at least 80% of double-sided sound-absorbing lining mounted on its inner and outer walls. The second section of the passage whose length is equal to 1.0 ± 0.2 of the passage height has no sound-absorbing lining. The third section of the passage whose length is equal to 2.0 ± 0.2 of its length comprises single-sided sound-absorbing lining applied on its outer and inner walls.

EFFECT: improved silencing.

4 cl, 4 dwg