دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: a device installed on an engine to quiet the barking sound produced by exhaust gases exiting through the exhaust pipe of the engine. One type of mufflers is a steel cylinder with baffle plates. The baffle plates, flat steel sheets welded inside the cylindrical body of the muffler, change the direc- tion of exhaust gas flow. Changing the direction of flow allows the gases to expand gradually, rather than all at once. Gradual expansion is quieter than rapid expansion. Sometimes called an exhaust silencer.