Exhaust passage control valve
a control valve and exhaust passage technology, applied in the direction of functional valve types, machines/engines, transportation and packaging, etc., can solve the problems of vibration between the opening state and closing state of the valve element, high cost, and large spring siz
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[0020] With reference to FIG. 1, numeral 1 denotes a silencer which is interposed in an exhaust system of an engine. The silencer 1 is made up of a cylindrical shell 10 and end walls 11.sub.1, 11.sub.2 which close one end and the other end, respectively, of the shell 10. Inside a main body of the silencer 1, there are provided a pair of first and second separators (partition walls) 12.sub.1, 12.sub.2 to thereby separate the space inside the main body of the silencer 1 into the following chambers: i.e., a first silencer chamber 13.sub.1 between the end wall 11.sub.1 on said one end and the first separator 12.sub.1; a second silencer chamber 13.sub.2 between the first separator 12.sub.1 and the second separator 12.sub.2; and a third silencer chamber 13.sub.3 between the second separator 12.sub.2 and the other end wall 11.sub.2. The silencer 1 is further provided with: an exhaust inlet pipe 14 which extends from said one end wall 11.sub.1 to the third silencer chamber 13.sub.3 through ...
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