An oxygen sensor heat insulation protection device

A technology of thermal insulation protection and oxygen sensor, which is applied in the direction of exhaust device, muffler device, electric control of exhaust gas treatment device, etc. problems, to achieve the effect of improving the heat dissipation effect, reducing the heat radiation effect, and meeting the needs of use

Active Publication Date: 2020-12-25
DONGFENG MOTOR CORP HUBEI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The above-mentioned nitrogen and oxygen sensor cover adopts a hexahedron structure formed by bending and forming sheet metal parts, which is large in size and takes up space in the car body, and the above-mentioned nitrogen and oxygen sensor cover adopts a bending and forming structure of sheet metal parts, which has the effect of heat insulation and cooling of the sheet metal parts General, so it is necessary to improve it

Method used

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  • An oxygen sensor heat insulation protection device
  • An oxygen sensor heat insulation protection device
  • An oxygen sensor heat insulation protection device

Examples

Experimental program
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Effect test

Embodiment 1

[0036] see image 3 , Figure 4 with Figure 9 As shown, the embodiment of the present invention provides an oxygen sensor heat insulation protection device, including:

[0037] A heat shield 100, the heat shield 100 includes an outer layer 103 and an inner layer 107, a sealed cavity is formed between the outer layer 103 and the inner layer 107, and a first corrugated board 104 and The second wave plate 106; wherein the first wave plate 104 is fixedly connected with the inner wall of the outer layer 103, the second wave plate 106 is fixedly connected with the inner wall of the inner layer 107, and between the first wave plate 104 and the second wave plate 106 A heat insulating layer 105 is provided. The outer layer 103 forms a vacuum layer through the first corrugated board 104 and the heat insulation layer 105 , and the inner layer 107 forms a vacuum layer through the second corrugated board 106 and the heat insulation layer 105 .

[0038] working principle

[0039] An oxy...

Embodiment 2

[0041] see image 3 , Figure 4 with Figure 9 As shown, the embodiment of the present invention provides an oxygen sensor heat insulation protection device. The difference between this embodiment and Embodiment 1 is: the outer layer 103, the inner layer 107, the first wave plate 104 and the second wave plate of the heat shield 100 Plate 106 is a stainless steel plate material. Wherein the outer layer 103 and the inner layer 107 of the heat shield 100 are all 3 mm thick stainless steel plate materials, and the first wave plate 104 and the second wave plate 106 are all 1 mm thick stainless steel plate materials, so as to improve the structural strength of the heat shield 100 and corrosion resistance. The heat insulation layer 105 is glass fiber wool or glass wool, which has excellent characteristics such as high temperature resistance, non-combustibility, low thermal conductivity, and light weight. Filling the gap with a heat insulation layer can further enhance the heat in...

Embodiment 3

[0043] see figure 2 , Figure 5 , Image 6 with Figure 7 As shown, the embodiment of the present invention provides an oxygen sensor heat insulation protection device. The difference between this embodiment and Embodiment 1 is that this device also includes a mounting bracket 200, and the mounting bracket 200 includes a fixing part 201 connected to the heat shield 100 , a flange is provided on the outer wall of the heat shield 100, a first mounting hole 101 is opened on the flange, a second mounting hole 102 is opened in the groove of the heat shield 100, and the fixing part 201 of the mounting bracket 200 It is fixedly connected with the heat shield 100 through the first installation hole 101 and the second installation hole 102 . A mounting portion 202 extending to the outside of the heat shield 100 is also provided on the mounting bracket 200 , and the mounting bracket 200 is used for fixing the heat shield 100 .

[0044] The fixing portion 201 of the mounting bracket...

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Abstract

The invention discloses a heat insulation protection device for an oxygen sensor, and belongs to the technical field of automobile engine heat insulation. The heat insulation protection device comprises a heat shield; the heat shield comprises an outer layer and an inner layer; a sealed cavity is formed between the outer layer and the inner layer; a first waved plate and a second waved plate are arranged between the outer layer and the inner layer; the first waved plate is fixedly connected with the inner wall of the outer layer, the second waved plate is fixedly connected with the inner wallof the inner layer, a heat insulation layer is further arranged between the first waved plate and the second waved plate, a vacuum layer is formed between the outer layer and the heat insulation layerthrough the first waved plate, and a vacuum layer is formed between the inner layer and the heat insulation layer through the second waved plate. The heat shield is provided with the outer layer andthe inner layer, and the first waved plate and the second waved plate are arranged between the outer layer and the inner layer at intervals. The heat insulation layer is arranged between the first waved plate and the second waved plate for heat insulation, the heat radiation effect of an engine heat source is reduced, the oxygen sensor is protected and insulated from heat, and the heat insulationeffect is improved.

Description

technical field [0001] The invention relates to the technical field of automobile engine heat insulation, in particular to an oxygen sensor heat insulation protection device. Background technique [0002] Automobile oxygen sensor is the key feedback sensor in the EFI engine control system, and it is a key part to control automobile exhaust emissions, reduce automobile environmental pollution, and improve the fuel combustion quality of automobile engines. At present, the oxygen sensor is generally installed on the engine exhaust pipe in the car, so it is often affected by the heat radiation of the two heat sources of the engine exhaust manifold and the turbocharger. Working in a high temperature and harsh environment for a long time will cause Oxygen sensors have a high failure rate. Once the oxygen sensor fails, the computer of the electronic fuel injection system will not be able to obtain the information of the oxygen concentration in the exhaust pipe, so it will not be a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F01N13/14F01N11/00
CPCF01N11/007F01N13/14F01N13/146F01N2510/02F01N2560/025Y02T10/40
Inventor 张立李佳许国松刘爽夏璋
Owner DONGFENG MOTOR CORP HUBEI
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