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Automobile-tail-gas recirculation device

A vehicle exhaust gas recirculation technology, which is applied in the direction of exhaust gas recirculation, charging system, engine components, etc., can solve the problems of blocked pipelines, lack of catalytic and filtering devices, etc., and achieve good corrosion resistance, reasonable structural design, The effect of long service life

Inactive Publication Date: 2017-10-24
WUHU EVERSHINE AUTOMOTIVE COMPONENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Exhaust Gas Recirculation (EGR) technology is one of the most effective devices to reduce the emission of nitrogen oxides (NOx) in automobile exhaust. The existing exhaust gas recirculation system lacks catalytic and filtering devices, and HC emissions It is easy for the dust to accumulate with the particulate matter in the exhaust gas to form a gel and block the pipeline

Method used

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  • Automobile-tail-gas recirculation device
  • Automobile-tail-gas recirculation device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] see figure 1 and figure 2 , the present invention provides an automobile exhaust gas recirculation device, comprising: an engine 1, an intake pipe 2 connected to the engine 1 and an exhaust pipe 3, a circulation pipe 4 connected to the intake pipe 2 and the exhaust pipe 3, connected to The catalytic converter 5 between the exhaust pipe 3 and the circulation pipe 4, the intercooler 6 and the EGR valve 8 connected in series on the circulation pipe 4 in sequence along the flow direction of the gas, are connected to the EGR valve 8 A differential pressure sensor 9 on the air inlet and an air outlet, a controller 10 connected to the differential pressure sensor 9, and a bypass valve 11 connected in parallel to both ends of the intercooler 6;

[0027] The catalytic converter 5 includes: a housing 51, an air inlet 52 and an air outlet 53 arranged at both ends of the housing 51, and a spiral gas delivery channel 54 arranged in the housing 51, the The inner surface of the gas...

Embodiment 2

[0032] A kind of manufacturing process of the catalytic converter of automobile exhaust gas recirculation device, the steps are as follows:

[0033] ①, structure and molding

[0034] The catalytic converter includes a housing, an air inlet and an air outlet arranged at both ends of the housing, a spiral gas delivery channel inside the housing, and an oxidation catalyst coated on the inner surface of the gas delivery channel;

[0035] The shell is forged with carbon steel, the gas transmission channel is welded with Q235 steel, and the oxidation catalyst is fastened to the inner surface of the gas transmission channel by adhesive;

[0036] ② Shell pretreatment

[0037] Spray the pretreatment liquid on the inner wall of the shell, and dry it directly after spraying;

[0038] The pretreatment solution is composed of 25 parts of dodecyl alcohol ester, 4 parts of methyl methacrylate, 7 parts of silicon carbide, 9 parts of dispersant, 15 parts of benzophenone, 10 parts of ether, 4...

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Abstract

The invention relates to the technical field of automobile-tail-gas treatment, in particular to an automobile-tail-gas recirculation device. The automobile-tail-gas recirculation device comprises an engine, an intake pipe, an exhaust pipe, a circulating pipe connected with the intake pipe and the exhaust pipe, a catalyzing device connected between the exhaust pipe and the circulating pipe, an intercooler, an EGR valve, a pressure difference transducer connected on a gas inlet and a gas outlet of the EGR valve, a controller connected with the pressure difference transducer and bypass valves connected at the two ends of the intercooler in parallel, wherein the intake pipe and the exhaust pipe are connected with the engine, and the intercooler and the EGR valve are sequentially connected on the circulating pipe in series in the flow direction of gas. Tail gas can be pretreated through the catalyzing device, it can be prevented that a pipe of the automobile-tail-gas recirculation device is blocked, the temperature of circulating tail gas is controlled through the bypass valves, the EGR effect is improved, the working state of the EGR valve is judged through the pressure difference transducer, and the defect of the EGR valve is overcome in time.

Description

technical field [0001] The invention relates to the technical field of automobile exhaust gas treatment, in particular to an automobile exhaust gas recirculation device. Background technique [0002] Exhaust Gas Recirculation (EGR) technology is one of the most effective devices to reduce the emission of nitrogen oxides (NOx) in automobile exhaust. The existing exhaust gas recirculation system lacks catalytic and filtering devices, and HC emissions The dust is easy to accumulate with the particulate matter in the exhaust gas to form a gel, which blocks the pipeline. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a vehicle exhaust gas recirculation device, which can prevent the pipeline blockage of the vehicle exhaust gas recirculation device, and can control the temperature of the circulating gas as required to improve the EGR effect. At the same time, the invention also provides a catalytic converter of an aut...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02M26/22F02M26/35F02M26/44F02M26/47F02M26/53
CPCF02M26/22F02M26/35F02M26/44F02M26/47F02M26/53
Inventor 刘华
Owner WUHU EVERSHINE AUTOMOTIVE COMPONENT