JPS6034514U - Silencer - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of drawings]

Fig. 1 is a schematic sectional view showing a muffler according to an earlier invention, Fig. 2 is a schematic sectional view showing a muffler equivalent to the muffler of Fig. 1, and Fig. 3 is a schematic sectional view of the muffler of Fig. 1-2. A line diagram showing the state of noise attenuation in the branch pipe section, Fig. 4 is a schematic sectional view showing the first embodiment of the silencer of the present invention, Fig. 5 is a perspective view of the plug, and Figs. 6 and 7 are 6A is a partial schematic sectional view of the pipe section, FIG. 6B is a sectional view taken along the line XX in FIG. 7A, and FIG. 8 is a sectional view similar to FIG. 6A showing the third embodiment, FIG. 9 is a sectional view similar to FIG. 8 showing the fourth embodiment, and FIG. 10 shows the noise obtained by the structure of FIG. 9. FIG. 2 is a diagram showing the damping effect of 1: Inlet pipe part, 2: First branch part, 3: First pipe part, 4: Second pipe part, 4L, 4R: Chamber, 5: First throttle merging part, 6: Second branch part, 7: Third pipe part, 7L, 7R: chamber, 8: fourth pipe part, 9: second throttle merging part, 10: third branch part, 11,1
2: Pipe, 13: Small hole, 14: Covered pipe, 15: Sound absorbing material, 1
6: Closing plate, 17: Closing plug, 18: Bottomed cylindrical part, 19
: Outward flange, 20: Short cylindrical part, 21: Partition plate, 21
a: Flat plate portion, 21b = Folded wall, 22a: Small diameter pipe, 22
b Two large diameter pipes, 23: Sound absorbing material, 24: Suppressing plate. Figure 9 Figure 10

Claims (1)

[Scope of utility model registration request] The pipe that guides the exhaust gas from the engine is branched into a pair of pipe parts that are parallel to each other and communicate with each other at both the front and rear ends, and one pipe part is partitioned by overlapping in the length direction, and this pipe part has a deep part. A silencer consisting of a pair of closed chambers.