TECHNOLOGICAL SYSTEM FOR SUPPRESSING AERO-GAS-DYNAMIC NOISE OF FORCED SUCK-OUT OF EXHAUST GASES OF TEST SUBJECTS LIKE WHEELED VEHICLES EQUIPPED WITH INTERNAL COMBUSTION ENGINES, OR AUTONOMOUS INTERNAL COMBUSTION ENGINES OF TESTING ACOUSTIC COMPLEX

摘要

FIELD: engineering of technological testing equipment and controlling-diagnostic equipment.;SUBSTANCE: technological system of internal combustion engine contains device for remote forced suck-out of exhaust gases of internal combustion engine in one of testing chambers of testing acoustic complex, testing chambers of testing acoustic complex contain, at least, two autonomous portions of outlet pipelines for exhaust gases from two testing chamber, while utilized technological system has common shared ventilation channel, equipped with air funnel plant and muffler, while to autonomous pipelines portions are connected to channel, belonging to separate testing chambers of testing acoustic complex, wherein stationary technological mufflers of aero-gas-dynamic noise are mounted, while at least in one of autonomous ventilation portions of pipelines of an individual testing chamber of testing acoustic complex exhaust gases of tested internal combustion engine are forced out without utilization of remote forced suck-out device elements and at least one of autonomous technological system technological mufflers has body shaped as a rectangular parallelepiped, while internal side walls of body are lined with sound-absorbing panels, and inlet and outlet pipes of technological muffler are simultaneously mounted on one of side walls of technological muffler body and connected to appropriate pipelines of technological system, while axes of inlet and outlet pipes are perpendicular to the wall of body whereto they are connected. Inlet pipe of aforementioned technological muffler is held in geometric center of side wall of body. Air funnel pipe is positioned at distance equal to one fourth portion of length of side wall to end wall of body and one fourth height of technological muffler body from its bottom wall.;EFFECT: decreased acoustic pollution of environment.;1 cl, 7 dwg