KR19980046185A - Auxiliary muffler - Google Patents

Abstract

The present invention relates to a vehicle exhaust device used to exhaust the exhaust gas generated in the engine of the vehicle, the inlet pipe (1) is connected to the rear end of the muffler 52, the exhaust gas is introduced from the muffler (52) It is mounted inside the case 3 for discharging the exhaust gas to the outside through the discharge pipe 2 and the case 3 between the inlet pipe 1 and the discharge pipe 2 and purifies impurities as the exhaust gas passes. By providing an auxiliary muffler composed of a dust collecting filter 4 and a pressure measuring means 10 for measuring the pressure inside the case 3, impurities are first purified through a catalytic converter and a muffler and noise is primary. As the reduced exhaust gas passes through the auxiliary muffler, impurities are secondaryly reduced and exhaust pressure is secondaryly reduced, thereby contributing to environmental protection and reducing noise.

Description

Auxiliary muffler

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automobile exhaust apparatus used for exhausting exhaust gas generated from an engine of an automobile, and more particularly, to an auxiliary muffler mounted to a rear end of a muffler.

In general, a vehicle exhaust device includes an exhaust pipe 50 connected to an exhaust port of an engine as shown in FIG. 1, a catalytic converter 51 for purifying harmful components of the exhaust gas output from the exhaust pipe, and an exhaust gas. It is composed of a muffler 52 for reducing the temperature and pressure of the noise to reduce the noise and then discharge into the atmosphere.

In the vehicle exhaust system, since the pressure of the exhaust pipe 50 is greater than atmospheric pressure when the engine is started, the exhaust gas can be discharged to the atmosphere through the catalytic converter 51 and the muffler 52. The converter 51 removes impurities contained in the exhaust gas, and the muffler 52 has a cylindrical shape to reduce noise by reducing the pressure of the atmospheric gas.

However, even though the exhaust gas passes through the catalytic converter 51 and the muffler 52, it maintains a high pressure with many impurities. If the exhaust gas is directly discharged into the atmosphere in the above state, it causes environmental pollution, There is a problem that causes a lot of discomfort to the pedestrians due to the noise.

The present invention has been made to solve the above-mentioned problems, and the object of the present invention is to provide an auxiliary muffler that reduces noise by purifying impurities contained in the exhaust gas and reducing the pressure of the exhaust gas. have.

1 is a structural diagram showing a general exhaust device,

2 is a structural diagram showing an auxiliary muffler according to the present invention;

3 is a structural diagram showing a pressure gauge according to the present invention,

3A is a view showing when the pressure is low,

3B is a view showing when the pressure is high.

Explanation of symbols for main parts of the drawings

1: inlet pipe 2: outlet pipe

3: case 4: dust collecting filter

10: pressure measuring means 11: pressure gauge case

12: spring 13: piston

14: lever 15: warning light

In order to achieve the above object, the present invention provides a case in which an inlet pipe is connected to the rear end of the muffler so that the exhaust gas is introduced from the muffler and the exhaust gas is discharged to the outside through the discharge pipe, And a dust collecting filter mounted inside the case to purify the impurities while passing the exhaust gas, and pressure measuring means for measuring the pressure inside the case.

Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings.

Figure 2 shows an auxiliary muffler according to the present invention, the inlet pipe 1 is connected to the rear end of the muffler 52, the exhaust gas is introduced from the muffler 52 and the exhaust gas through the discharge pipe (2) And a dust collecting filter (4) mounted inside the case (3) between the inlet pipe (1) and the discharge pipe (2) for discharging the impurities to the outside, and purifying impurities while the exhaust gas passes therethrough. It consists of a pressure measuring means 10 for measuring the pressure inside the case (3).

As shown in FIG. 3, the pressure measuring means 10 includes a pressure gauge case 11 mounted on the case 3 and a spring 12 mounted on an upper end of the pressure gauge case 11. It is mounted to the lower end of the spring 12 and penetrates the piston 13 vertically moving along the inner wall of the pressure gauge case 11 by the pressure inside the case 3, and the upper end of the pressure gauge case 11 The lever 14 fixed to the piston 13 and interlocked with the piston 13, the switch SW which is in an on state when the lever 14 is raised by a certain degree or more, and the switch SW are turned on It consists of a warning light (15) which is turned on when the state.

Referring to the operation of the present invention configured as described above are as follows.

When the engine is running, the exhaust gas discharged through the exhaust port of the engine passes through the catalytic converter, the impurities are first purified, the noise is first reduced while passing through the muffler 52, and then the case through the inlet pipe (1) (3) It is introduced inside.

The exhaust gas passes through the dust collecting filter 3 in order to be discharged to the outside through the discharge pipe 2, and the dust is secondaryly purified by the dust collecting filter 4, and the noise inside the case 1 is 2 After being reduced, it is discharged to the outside.

At this time, when the dust collecting filter 4 collects many impurities and it is difficult for the exhaust gas to pass through the dust collecting filter 4, the exhaust gas adversely affects the output of the engine. If the internal pressure of the case 3 is not increased smoothly, the piston 13 may overcome the spring force of the spring 12 and rise along the inner wall of the pressure gauge case 11.

In addition, the lever 14 also rises together with the piston 13, and when the lever 14 rises by a certain degree or more, the switch SW is turned on from the off state by the lever 14, When the switch SW is turned on, the battery B, the warning light 15, and the switch SW are closed, and the warning light 15 is turned on.

When the warning light 15 is turned on, the driver can know that it is time to remove the dust collecting filter 4 and then clean or replace it with a new one.

Therefore, as described above, the exhaust gas which passes through the catalytic converter and the muffler is first purified and impurities are first reduced, while the secondary gas is passed through the auxiliary muffler. It can contribute and the noise is reduced.

Claims (2)

An inlet pipe is connected to the rear end of the muffler so that the exhaust gas flows in from the muffler and is discharged to the outside through the discharge pipe, and is mounted inside the case between the inlet pipe and the discharge pipe, and the exhaust gas passes through the impurities. The secondary muffler comprising a dust collecting filter to be purified and pressure measuring means for measuring the pressure inside the case. The method of claim 1, The pressure measuring means may have a pressure gauge case mounted on the case with an open lower surface thereof, a spring mounted on an upper end of the pressure gauge case, and mounted on a lower end of the spring to be perpendicular to an inner wall of the pressure gauge case by pressure inside the case. A piston that moves, a lever that is fixed to the piston and interlocks with the piston while penetrating an upper end of the pressure gauge case, a switch that is turned on when the lever is raised by a certain degree, and lights when the switch is turned on. An auxiliary muffler comprising a warning light.