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After treatment device of exhaust system for vehicle

An exhaust system and post-processing technology, which is applied in the field of post-processing equipment for activation time, can solve the problems of activation time delay, excessive, and increased costs

Inactive Publication Date: 2017-07-11
HYUNDAI MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, the conventional method has a problem in that the fuel consumption of the vehicle deteriorates
[0008] In addition, we found that in the conventional method, since the high-temperature exhaust gas combusted in the engine is discharged to the outside when passing through the exhaust port, the exhaust manifold, and the after-treatment device, the excessive discharge due to the delay in the activation time of the catalyst contains a large amount of Exhaust of harmful components
[0009] Furthermore, conventional methods use thermal energy to heat the canning (commonly referred to in the art as "cover") surrounding the catalyst of the aftertreatment device and thus cause energy loss (heat loss) unrelated to catalyst activation
[0010] Conventional methods also require the durability of the reprocessing equipment tank equipment to withstand high temperature environments and may increase costs because the tank equipment is made of relatively expensive materials

Method used

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  • After treatment device of exhaust system for vehicle
  • After treatment device of exhaust system for vehicle
  • After treatment device of exhaust system for vehicle

Examples

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preparation example Construction

[0093] Preparation of Thermally Insulating Coating Composition - Potassium silicate and silanol as silicates, (BASF Corporation, NJ) as a surfactant, and aminopropyltrimethoxysilane as a crosslinker were placed in a 5 liter vessel including a stirrer and subjected to a sol-gel reaction for 24 hours.

[0094] Next, the porous silica airgel (about 500cm 3 / g specific surface area) and iron oxide and zirconia are added to a container and then mixed to prepare a thermal insulation coating composition. The contents of the ingredients included in the thermal insulation coating composition are described in Table 1 below.

[0095] Table 1 - Composition of thermal insulation coating composition (unit: wt.%)

[0096] project Example 1 Example 2 Example 3 Example 4 Silica airgel 3 5 10 15 Silicate 10 10 10 10 Silanol 40 37 32 27 Iron Oxide and Zirconia 6 6 6 6 Surfactant 2 2 2 2 crosslinking agent 2 2 2 2 w...

example 5

[0098] Example 5: Measurement of Physical Properties of Thermally Insulating Coatings Obtained in Examples

[0099] The physical properties of the heat insulating coatings obtained in Examples 1 to 4 were measured by the following methods and the measured results are shown in Tables 2 and 3 .

[0100] Thermal conductivity (W / mK) - For the thermal insulating coating obtained by the above Example 1, the thermal conductivity was measured according to ASTM E1461 by the thermal diffusion measurement method using the laser flash method under room temperature and normal pressure conditions.

[0101] Furthermore, while the throttle valve was fully opened at 6,300 rpm in the combustion chamber formed using the thermal insulating coating obtained in Example 1 above and combustion was then performed, the thermal conductivity of the thermal insulating coating was measured over a combustion progress time.

[0102] Volume heat capacity (KJ / m 3 K) - For the heat insulating coating obtai...

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Abstract

Disclosed herein is an after treatment device of an exhaust system for a vehicle. The after treatment device of an exhaust system for a vehicle is connected to an exhaust pipe and includes a canning main body in which a catalyst is received and may include a heat insulation coating layer formed on an inner wall surface of the canning main body.

Description

[0001] Citations to related applications [0002] This application claims priority and benefit from Korean Patent Application No. 10-2015-0150346 filed on October 28, 2015, the entire contents of which are hereby incorporated by reference. technical field [0003] The present disclosure relates to an exhaust system for a vehicle, and more particularly, to an aftertreatment device capable of shortening the activation time of a catalyst for the exhaust system of a vehicle. Background technique [0004] In recent years, environmental concerns regarding exhaust emissions from vehicles have attracted worldwide attention. In response to this problem, regulations on the exhaust of vehicles have been tightened. The vehicle industry has invested huge sums of money in developing an exhaust system for removing harmful components contained in exhaust gas and has conducted many studies on methods for reducing harmful gases and improving fuel consumption. [0005] As one of the methods ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01N3/28
CPCF01N3/28F01N2510/02F01N2610/1406B01D53/9431B01D2255/30B01D2258/012F01N3/2839F01N13/14F01N13/16Y02A50/20B01D53/94F01N3/2803
Inventor 李昇祐白洪吉金甫炅吕寅雄洪雄杓
Owner HYUNDAI MOTOR CO LTD