CN215292719U

CN215292719U - Exhaust gas recirculation system based on internal combustion engine

Info

Publication number: CN215292719U
Application number: CN202121520579.6U
Authority: CN
Inventors: 陆君杰; 王彩珍; 梁杏
Original assignee: Shanghai Chunran Environmental Engineering Co ltd
Current assignee: Shanghai Chunran Environmental Engineering Co ltd
Priority date: 2021-07-06
Filing date: 2021-07-06
Publication date: 2021-12-24
Anticipated expiration: 2031-07-06

Abstract

The utility model discloses an exhaust gas recirculation system based on internal-combustion engine, the novel nipple rectifier comprises a cylindrical shel, selective catalytic reduction ware and oxidation type catalyst converter are installed respectively to the left and right sides of barrel, just the central fixed mounting of barrel has particulate filter. The utility model discloses an install selective catalytic reduction ware and oxidation type catalyst at the both ends of exhaust gas recirculation system's barrel and be favorable to improving the content of the inside harmful particle of entire body barrel, and then protection particle filter, increase of service life sets up inlet tube and outlet pipe through the both sides at the filter cylinder body, and the hydroenergy that the inside internal thread groove of barrel cooperation got into is enough effectual takes away the heat in the barrel, prevents the waste gas backward flow simultaneously.

Description

Exhaust gas recirculation system based on internal combustion engine

Technical Field

The utility model relates to a circulation system specifically is an exhaust gas recirculation system based on internal-combustion engine.

Background

An internal combustion engine is a power machine, and is a heat engine that directly converts heat energy released by burning fuel inside the machine into power. Exhaust Gas Recirculation (Exhaust Gas Recirculation) is a technique (method or means) for a small internal combustion engine for an automobile to introduce a part of Exhaust Gas into an intake side after combustion and to suck the Exhaust Gas again. The main objective is to reduce nitrogen oxides (NOx) in the exhaust gas and to improve fuel economy at part load. In recent years, exhaust gas recirculation systems have become more and more widely used in order to reduce emissions and fuel consumption of engines to a greater extent.

However, since the exhaust gas of the conventional circulation system is recirculated downstream through the particulate filter, the recirculated exhaust gas has a high content of harmful components such as CO, NOx hydrocarbons, etc., and excessive exhaust gas participates in recirculation, which may affect ignition and performance of the mixture gas, thereby affecting the dynamic performance of the engine, and the exhaust gas passing through the filter may enter the particulate filter again, which may affect the service life of the particulate filter. Therefore, the utility model provides an exhaust gas recirculation system based on internal-combustion engine to solve the problem that proposes in the above-mentioned background art.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an exhaust gas recirculation system based on internal-combustion engine to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

an exhaust gas recirculation system based on an internal combustion engine comprises a cylinder body, wherein a selective catalytic reduction device and an oxidation type catalytic converter are respectively arranged on the left side and the right side of the cylinder body, and a particle filter is fixedly arranged in the center of the cylinder body.

Preferably, a water outlet pipe is arranged between the particle filter and the selective catalytic reduction device, and the water outlet pipe is communicated with the interior of the cylinder body.

Preferably, a water inlet pipe is arranged between the particle filter and the oxidation type catalytic converter, and the water inlet pipe is communicated with the interior of the cylinder body.

Preferably, a supercharger fixedly arranged at one end of the cylinder is arranged on the outer side of the selective catalytic reduction device, and a connecting flange is arranged at the outer end of the supercharger.

Preferably, a supercharger fixedly arranged at the other end of the cylinder is arranged on the outer side of the oxidation type catalytic converter, and a connecting flange is arranged at the outer end of the supercharger.

Preferably, the inside of the cylinder is provided with internal thread grooves at both sides of the particulate filter.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses an install selective catalytic reduction ware and oxidation type catalyst at the both ends of exhaust gas recirculation system's barrel and be favorable to improving the content of the inside harmful particle of entire body barrel, and then protect particulate filter, increase of service life.

2. The utility model discloses a set up inlet tube and outlet pipe in the both sides of filter cylinder body, the hydroenergy that the internal thread groove cooperation of barrel inside got into is enough effectual takes away the heat in the barrel, prevents the waste gas backward flow simultaneously.

Drawings

Fig. 1 is a schematic diagram of an exhaust gas recirculation system based on an internal combustion engine.

Fig. 2 is a schematic front sectional view of an exhaust gas recirculation system based on an internal combustion engine.

In the figure: 1. a barrel; 2. a particulate filter; 3. a selective catalytic reducer; 4. an oxidation catalyst; 5. a water inlet pipe; 6. a water outlet pipe; 7. a supercharger; 8. an internal thread groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Please refer to fig. 1-2, in the embodiment of the present invention, an exhaust gas recirculation system based on an internal combustion engine, including a cylinder 1, a selective catalytic reduction device 3 and an oxidation catalyst 4 are installed respectively on the left and right sides of the cylinder 1, and a center fixed mounting of the cylinder 1 has a particle filter 2, the outside of the selective catalytic reduction device 3 is provided with a supercharger 7 fixedly installed on one end of the cylinder 1, and the outer end of the supercharger 7 is provided with a connecting flange, the outside of the oxidation catalyst 4 is provided with a supercharger 7 fixedly installed on the other end of the cylinder 1, and the outer end of the supercharger 7 is provided with a connecting flange.

The selective catalytic reduction device 3 and the oxidation type catalytic converter 4 are arranged at the two ends of the cylinder body 1, so that the content of harmful particles in the cylinder body 1 can be improved, the particle filter 2 is protected, and the service life is prolonged.

Further, a water outlet pipe 6 is arranged between the particle filter 2 and the selective catalytic reduction device 3, the water outlet pipe 6 is communicated with the interior of the cylinder 1, a water inlet pipe 5 is arranged between the particle filter 2 and the oxidation type catalytic reduction device 4, and the water inlet pipe 5 is communicated with the interior of the cylinder 1.

Set up inlet tube 5 and outlet pipe 6 in the both sides of filter cylinder 1, the water that the internal thread groove 8 cooperation inside cylinder 1 got into can be effectual takes away the heat in cylinder 1, prevents simultaneously that waste gas from backflowing.

The utility model discloses a theory of operation is:

this exhaust gas recirculation system is favorable to improving the content of the inside harmful particle of barrel 1 through installing selective catalytic reduction ware 3 and oxidation type catalyst converter 4 at the both ends of barrel 1, and then protects particulate filter 2, increase of service life sets up inlet tube 5 and outlet pipe 6 in the both sides of filter barrel 1, and the hydroenergy that the internal thread groove 8 inside of barrel 1 cooperation got into can effectually take away the heat in barrel 1, prevents the waste gas backward flow simultaneously.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. An exhaust gas recirculation system based on an internal combustion engine comprises a cylinder body (1), and is characterized in that a selective catalytic reduction device (3) and an oxidation type catalytic converter (4) are respectively installed on the left side and the right side of the cylinder body (1), and a particle filter (2) is fixedly installed in the center of the cylinder body (1).

2. An exhaust gas recirculation system based on an internal combustion engine according to claim 1, characterized in that an outlet pipe (6) is provided between the particulate filter (2) and the selective catalytic reduction device (3), and the outlet pipe (6) is communicated with the interior of the cylinder (1).

3. An exhaust gas recirculation system based on an internal combustion engine according to claim 1, characterized in that a water inlet pipe (5) is arranged between the particulate filter (2) and the oxidation catalyst (4), and the water inlet pipe (5) communicates with the interior of the cylinder (1).

4. An exhaust gas recirculation system based on an internal combustion engine according to claim 1, characterized in that the selective catalytic reduction device (3) is provided at its outer side with a supercharger (7) fixedly installed at one end of the cylinder (1), and the outer end of the supercharger (7) is installed with a connecting flange.

5. An exhaust gas recirculation system based on an internal combustion engine according to claim 1, characterized in that the outside of the oxidation catalyst (4) is provided with a supercharger (7) fixedly mounted at the other end of the cylinder (1), and the outer end of the supercharger (7) is provided with a connecting flange.

6. An exhaust gas recirculation system based on an internal combustion engine according to claim 1, characterized in that the interior of the cylinder (1) is provided with internally threaded grooves (8) on both sides of the particle filter (2).