CN-224214242-U - Ternary catalytic muffler structure of Guohu gas engine

CN224214242UCN 224214242 UCN224214242 UCN 224214242UCN-224214242-U

Abstract

The utility model provides a three-way catalytic muffler structure of a national six-gas engine, which is characterized in that a side shield, a whole vehicle connecting support, a top shield and an end shield are arranged on a three-way catalytic muffler body, the three-way catalytic muffler body comprises an outer cylinder body, an end cover I and an end cover II, an inner end cover is welded on the end cover I to form a heat insulation interlayer, end cover heat insulation cotton is arranged in the interlayer, the inner cylinder body is welded on the end cover I and the baffle I, a heat insulation cavity is formed by the inner cylinder body and the outer cylinder body, and two layers of cylinder heat insulation cotton are arranged in the cavity. The three-way catalytic muffler has strong noise reduction capability, reduces the surface temperature of the three-way catalytic muffler, and improves the installation efficiency of the whole vehicle.

Inventors

XU JINGMING
WU PENG
ZHANG RAN
WANG BINBIN
WANG MUSU
ZHANG HONGYAN

Assignees

郑州精益达汽车零部件有限公司

Dates

Publication Date: 20260508
Application Date: 20250703

Claims (7)

1. A three-way catalytic muffler structure of a national six-gas engine is characterized in that: The two side surfaces of the three-way catalytic muffler body are respectively provided with a side surface shield, the top surface is provided with a whole vehicle connecting bracket and a top surface shield, and the end surface is provided with an end surface shield; The three-way catalytic muffler body comprises an outer layer cylinder body, a first end cover and a second end cover, and the outer layer cylinder body, the first end cover and the second end cover are welded to form a cavity; The air inlet core pipe is placed in the cavity through a round hole on the outer layer cylinder body, and meshes serving as damping holes on the air inlet core pipe face the first end cover; a three-way catalytic unit assembly is arranged in the three-way catalytic muffler body, the three-way catalytic unit assembly is welded to the outer layer cylinder body through a first baffle plate and a second baffle plate, a plurality of meshes and a flanging hole are formed in the first baffle plate, and a flanging hole is formed in the second baffle plate; the inner end cover is welded to the first end cover to form a heat insulation interlayer, and end cover heat insulation cotton is arranged in the interlayer; the mesh partition plate is provided with meshes, welded to the outer layer cylinder body and the end cover II to form a silencing cavity, and silencing cotton is arranged in the silencing cavity; the inner layer cylinder body is welded to the end cover I and the partition board I, a heat insulation cavity is formed between the inner layer cylinder body and the outer layer cylinder body, and two layers of cylinder body heat insulation cotton are arranged in the cavity; The gas outlet core pipe penetrates into the flanging hole of the first partition plate and is welded together, a row of meshes which are uniformly distributed are arranged in the axial direction of the gas outlet core pipe, and the gas outlet pipe penetrates into the flanging hole of the second partition plate and is welded together with the gas outlet core pipe; the wire mesh and the air outlet pipe are brazed together; The air outlet pipe penetrates through the end cover and is connected with the air outlet pipe positioned outside the outer layer cylinder; the gas sampling device is welded in the pipe body of the exhaust pipe; The sensor fixing support is fixedly arranged on the three-way catalytic muffler body, and the temperature sensor arranged on the three-way catalytic muffler body and the oxygen sensor arranged on the exhaust pipe are respectively connected with the sensor data unit positioned on the sensor fixing support.
2. The three-way catalytic muffler structure of a six-way gas engine as set forth in claim 1, wherein shield fixing brackets are installed between the side shields, the top shields, the end shields and the three-way catalytic muffler body.
3. The three-way catalytic muffler structure of a six-way gas engine of claim 1, wherein damping rubber pads are arranged among the side surface shield, the top surface shield, the end surface shield and the three-way catalytic muffler body.
4. The three-way catalytic muffler structure of a national six-gas engine as set forth in claim 1, wherein the temperature sensor wire harness fixing bracket is fixedly provided with a temperature sensor wire harness fixing wire clip, a wire harness of the temperature sensor is arranged on the temperature sensor wire harness fixing wire clip, and the wire harness of the temperature sensor is connected with a sensor data unit on the sensor fixing bracket.
5. A three-way catalytic muffler structure for a six-state gas engine as set forth in claim 1, wherein the reinforcing member has an inlet core tube connected to the inlet core tube and the outer cylinder.
6. The three-way catalytic muffler structure of a Guohu gas engine according to claim 1, wherein the wire mesh is woven in the shape of peaks and valleys from cylindrical stainless steel wires and then wound layer by layer.
7. The three-way catalytic muffler structure of a national six-gas engine as set forth in claim 1, wherein the gas sampling device is composed of two gas taking pipes which are perpendicular to each other and are communicated with each other and provided with holes.

Description

Ternary catalytic muffler structure of Guohu gas engine Technical Field The utility model belongs to the technical field of tail gas emission purification technology and energy conservation and consumption reduction of automobile engines, and particularly relates to a three-way catalytic muffler structure of a national six-gas engine. Background The existing box-type national six-natural gas three-way catalytic muffler has the following problems of weak noise reduction capability, large exhaust noise, poor customer experience, high cylinder surface temperature, risk of baking and thawing surrounding parts, inaccurate concentration value detection by an oxygen sensor, emission exceeding standard alarm, and low assembly efficiency when the three-way catalytic muffler is installed by a whole vehicle factory. In order to solve the problems, a ternary catalytic muffler for a national six-gas engine is developed. Disclosure of Invention The utility model provides a ternary catalytic muffler structure of a national six-gas engine, which aims to solve the defects in the prior art, improve the noise reduction capability of the ternary catalytic muffler, reduce the surface temperature of the ternary catalytic muffler and improve the installation efficiency of the whole vehicle. The utility model adopts the technical scheme that: a three-way catalytic muffler structure of a national six-gas engine is characterized in that: The two side surfaces of the three-way catalytic muffler body are respectively provided with a side surface shield, the top surface is provided with a whole vehicle connecting bracket and a top surface shield, and the end surface is provided with an end surface shield; The three-way catalytic muffler body comprises an outer layer cylinder body, a first end cover and a second end cover, and the outer layer cylinder body, the first end cover and the second end cover are welded to form a cavity; The air inlet core pipe is placed in the cavity through a round hole on the outer layer cylinder body, and meshes serving as damping holes on the air inlet core pipe face the first end cover; a three-way catalytic unit assembly is arranged in the three-way catalytic muffler body, the three-way catalytic unit assembly is welded to the outer layer cylinder body through a first baffle plate and a second baffle plate, a plurality of meshes and a flanging hole are formed in the first baffle plate, and a flanging hole is formed in the second baffle plate; the inner end cover is welded to the first end cover to form a heat insulation interlayer, and end cover heat insulation cotton is arranged in the interlayer; the mesh partition plate is provided with meshes, welded to the outer layer cylinder body and the end cover II to form a silencing cavity, and silencing cotton is arranged in the silencing cavity; the inner layer cylinder body is welded to the end cover I and the partition board I, a heat insulation cavity is formed between the inner layer cylinder body and the outer layer cylinder body, and two layers of cylinder body heat insulation cotton are arranged in the cavity; The gas outlet core pipe penetrates into the flanging hole of the first partition plate and is welded together, a row of meshes which are uniformly distributed are arranged in the axial direction of the gas outlet core pipe, and the gas outlet pipe penetrates into the flanging hole of the second partition plate and is welded together with the gas outlet core pipe; the wire mesh and the air outlet pipe are brazed together; The air outlet pipe penetrates through the end cover and is connected with the air outlet pipe positioned outside the outer layer cylinder; the gas sampling device is welded in the pipe body of the exhaust pipe; The sensor fixing support is fixedly arranged on the three-way catalytic muffler body, and the temperature sensor arranged on the three-way catalytic muffler body and the oxygen sensor arranged on the exhaust pipe are respectively connected with the sensor data unit positioned on the sensor fixing support. And a shield fixing bracket is arranged among the side shield, the top shield, the end shield and the three-way catalytic muffler body. And damping rubber pads are arranged among the side surface protective cover, the top surface protective cover, the end surface protective cover and the three-way catalytic muffler body. The temperature sensor wire harness fixing support is fixedly provided with a temperature sensor wire harness fixing line clamp, the wire harness of the temperature sensor is arranged on the temperature sensor wire harness fixing line clamp, and the wire harness of the temperature sensor is connected with the sensor data unit on the sensor fixing support. The air inlet core tube reinforcing component is connected with the air inlet core tube and the outer layer cylinder body. The wire mesh is woven into wave crest and wave trough shapes by cylindrical stainless steel wires and then wound layer by laye