JP2001342817A - Nonresistance noise eliminator (muffler) - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a muffler in exhaust of various internal combustion engines capable of eliminating exhaust noise by simplifying the structure in the muffler to enable smooth exhaust by solving the problems of the conventional muffler structure adapted to eliminate exhaust noise by passing the exhaust through the interior of a sound absorbing plate that in a long time use, adhesion of carbon causes lowering of output because the sound absorbing plate becomes resistance to exhaust, resulting in incomplete combustion due to more feed of fuel so that resistance is applied to exhaust to generate smoke. SOLUTION: In order to remove the sound absorbing plate in the muffler to eliminate resistance, the principle of using a sphere so that sound is cancelled by mutual wavelengths in the central part is adopted to reduce resistance and enable smooth exhaust. The silencing effect can be heightened by connection, and the above simple structure will lower the cost.

Description

DETAILED DESCRIPTION OF THE INVENTION

This invention is an internal structure of a silencer such as a gasoline engine and a diesel engine. In recent years, air pollution due to automobile exhaust gas has become a problem, especially in diesel engines, where noise is reduced with a silencer. Adhering to it, preventing smooth exhaust, and sending more fuel as the output drops, resulting in incomplete combustion and smoke. Therefore, we devised a silencer that is small, non-resistance and silences the sound. Fig. 1 The pipe diameter when entering the muffler through the muffler duct from the engine manifold should not be smaller than the muffler duct diameter.
Make a hole of the same diameter inside the opposing spherical side and put out the pipe outside the center of the sphere. From outside to thin. At this time, the total area of the narrow holes should be larger than the area of the pipe diameter, and the hole around the pipe should be closer to the center of the sphere. Figure 2 The pipe coming out of the sphere is bonded to the next spherical side. It is better for the sphere and the sphere to be as short as possible for adhesion. Fig. 3 Enclose several connected spheres with an iron plate with a sound absorbing plate inside. ★ No clogging because the exhaust gas does not directly hit the sound absorbing plate. ★ The spherical shape uses the effect that sound entering from the outside is reflected inside the wall and disappears at the center in each other's wavelength. ★ There is a space between the spherical shapes and the gas does not enter directly, so the temperature of the body does not rise. .

2. Description of the Related Art A conventional silencer has a structure in which exhaust gas enters through an intake port and suppresses sound between the exhaust port and the exhaust port.

The structure of the silencer according to the present invention sucks the sound that is extinguished at the center of the sphere before the exhaust gas enters through the inlet. Increase silencing effect by connecting.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a silencer alone.

FIG. 2 is a longitudinal sectional view of a silencer connection.

FIG. 3 is a longitudinal sectional view of a silencer main body.

Claims (1)

[Claims] Internal structure of silencer