CN2198389Y

CN2198389Y - Purifying and silencing device for diesel and gasoline engine

Info

Publication number: CN2198389Y
Application number: CN94228987U
Authority: CN
Inventors: 李源泰
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-06-24
Filing date: 1994-06-24
Publication date: 1995-05-24
Anticipated expiration: 2004-06-24

Abstract

The utility model relates to a purifying and silencing device for diesels and gasoline engines, which belongs to purifying and silencing devices and is especially suitable for diesels and gasoline engines. The utility model comprises a quick gas expansion chamber, a medium speed gas expansion chamber and a slow gas expansion chamber. An outdoor partition board is arranged between the quick gas expansion chamber and the medium speed gas expansion chamber. The slow gas expansion chamber and the medium speed gas expansion chamber separately preset hollow bodies and through holes are arranged in the hollow bodies. The utility model has the characteristics of simple structure, good purifying and silencing effect, etc.

Description

Purifying and silencing device for diesel and gasoline engine

The utility model is to belong to the purifying silencing device, especially for the purifying silencing device of bavin, gasoline locomotive.

Bavin before the utility model application, the purification silencer of gasoline locomotive, for example, the patent No. is 90210423.3 automobile purification silencer, have purifying effect characteristics preferably, but owing in gas expansion chamber, be provided with noise reduction core pipe, not only increase the preparation process program, and manufacture difficulty is bigger, causes reject rate higher; It is unreasonable to be that its structure is provided with again, so the purifying silencing effect is still not ideal.

The purpose of this utility model is exactly at the problems referred to above, and a kind of simple in structure, bavin of purifying silencing better effects if, the purification silencer of gasoline locomotive are provided.

The purpose of this utility model is to realize like this, the utility model is done to form with improvement on the patent No. is the architecture basics of 90210423.3 automobile purification silencer: remove the noise reduction core pipe that gas is provided with in expansion chamber, the gas middling speed expansion chamber at a slow speed, and between fast gas expansion chamber and middling speed gas expansion chamber, outdoor dividing plate is set, reach above-mentioned purpose of the present utility model with this.

Major advantage of the present utility model:

1. simple in structure:

Because the utility model removes gas expansion chamber, the interior noise reduction core pipe of gas middling speed expansion chamber at a slow speed, just can greatly simplify the structure, and has simplified preparation process, has improved the yield rate of product simultaneously;

2. purifying silencing is effective:

The utility model is provided with outdoor dividing plate between fast gas expansion chamber and middling speed gas expansion chamber, just make the gas by the fast gas expansion chamber produce turbulent flow between fast gas expansion chamber and outdoor dividing plate, produces purifying silencing effect better.

Fig. 1 is a structural representation of the present utility model.

Below in conjunction with accompanying drawing concrete structure of the present utility model is further described:

The utility model comprises gas rapid expanding chamber 2, gas middling speed expansion chamber 4, gas is expansion chamber 7 at a slow speed, its structure outline is to be provided with outdoor dividing plate 3 between gas rapid expanding chamber 2 and the gas middling speed expansion chamber 4, gas expansion chamber 7, gas middling speed expansion chamber 4 at a slow speed is respectively hollow body 8, hollow body 5, has through hole 13, through hole 16 on hollow body 8, the hollow body 5 respectively.

The utility model keeps housing 14, suction port 1, the relief opening 12 of original structure, and the acoustical panel 6 outside the gas middling speed expansion chamber 4, gas is the acoustical panel 9 of expansion chamber 7 at a slow speed, the outer acoustical panel 11 of catalyst case 10 and catalyst case, and housing 14 bottoms are dedust port 15.

Gas can be provided with 80 mesh filter screens on the hollow body 8 of expansion chamber 7 at a slow speed, on the hollow body 5 of gas middling speed expansion chamber 4 60 mesh filter screens is set, and this structure is applicable to diesel locomotive.

Gas is respectively arranged with rare earth catalyst particle, this structure applicable to gasoline locomotive on the hollow body 5 of hollow body 8, the gas middling speed expansion chamber 4 of expansion chamber 7 at a slow speed.

Claims

1, bavin, gasoline locomotive purification silencer, comprise gas rapid expanding chamber 2, gas middling speed expansion chamber 4, gas expansion chamber 7 at a slow speed, it is characterized in that being provided with outdoor dividing plate 3 between gas rapid expanding chamber 2 and the gas middling speed expansion chamber 4, gas expansion chamber 7, gas middling speed expansion chamber 4 at a slow speed is hollow body 8, hollow body 5 respectively, has through hole 13, through hole 16 on hollow body 8, the hollow body 5 respectively.

2, bavin according to claim 1, gasoline locomotive purification silencer, it is characterized in that gas at a slow speed the hollow body 8 of expansion chamber 7 be provided with 80 mesh filter screens, on the hollow body 5 of gas middling speed expansion chamber 4 60 mesh filter screens are set.

3, bavin according to claim 1, gasoline locomotive purification silencer is characterized in that gas is respectively arranged with the rare earth catalyst particle on the hollow body 5 of hollow body 8, the gas middling speed expansion chamber 4 of expansion chamber 7 at a slow speed.