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A rapid aging method for catalytic gasoline particulate filter

A particle trap, rapid aging technology, used in the testing of instruments, machinery/structural components, and vehicle testing, etc., can solve the problems of different exhaust atmospheres, different working principles, and long cycles, and achieves short cycle times. Operation and practicability

Active Publication Date: 2021-05-11
昆明贵研催化剂有限责任公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The actual vehicle durability test studies the durability performance of cGPF, which requires a long cycle and high cost. Although the burner test can quickly realize the rapid accumulation of catalyst ash, there are also problems such as temperature, different exhaust atmosphere, and different working principles, which cannot be truly simulated. Insufficient vehicle durability

Method used

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  • A rapid aging method for catalytic gasoline particulate filter
  • A rapid aging method for catalytic gasoline particulate filter
  • A rapid aging method for catalytic gasoline particulate filter

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The carrier specification of the catalytic gasoline particulate filter used in this example is Φ118.4*152.4 (mm), the mesh number is 300cpsi, the wall thickness is 8mil, the volume is 1.68L, and its load is 75g / L catalyst coating, and the precious metal content is 8g / ft 3 . The example target ash load M t It is 42g, simulating the 200,000 endurance mileage of a real car.

[0025] The present invention comprises the following steps:

[0026] (1) According to the SRC test data of the 1.5L TGDI vehicle and the engine universal characteristics and emission test data obtained on the 2.0L TGDI engine bench; design three steady-state working conditions (denoted as working condition 1#, working condition 2 #, Working condition 3#) rapid aging, which is characterized by working condition 1# having high fuel consumption rate, working condition 2# having high fuel consumption rate and high exhaust temperature, working condition 3# having high particulate matter and smoke emiss...

Embodiment 2

[0035] The carrier specification of the catalytic gasoline particle filter used in this example is Φ118.4*152.4 (mm), the mesh number is 300cpsi, the wall thickness is 8mil, the volume is 1.68L, and its load is 100g / L catalyst coating, and the precious metal content is 8g / ft 3 . The example target ash load M t It is 33.6g, and the endurance mileage of a simulated real car is 160,000.

[0036] Include the following steps:

[0037] (1) The catalytic gasoline particulate filter is tested on a 1.5LTGDI vehicle, and the vehicle emission test results are used as the test comparison after aging;

[0038] (2) Aging the catalytic gasoline particulate filter after the vehicle test on the 2.0LTGDI engine bench, weighing the catalyst at 200°C before starting the aging, and determining the weight M before aging 0 . Then perform aging according to the selected rapid aging conditions. Rapid aging working condition is made up of three steady-state working conditions (i.e. working condi...

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Abstract

The invention discloses a rapid aging method for a catalytic type gasoline particle trap, comprising: performing rapid aging on the catalytic type gasoline particle trap according to selected rapid aging conditions on the engine stand, wherein the rapid aging condition is determined by Composed of three steady-state working conditions; after 1 to 6 aging cycles, decarbonize and weigh the catalytic converter under the decarbonizing condition to determine the soot and ash loading; if the ash loading M i Less than the target ash loading M t , then continue aging; otherwise, M i Greater than or equal to M t then the test is stopped; the catalytic gasoline particulate filter is periodically tested for performance throughout the test. The method of the present invention is easy to operate and has strong practicability, and can quickly and accurately realize the loading of the ash content of the catalytic gasoline particle filter, the accumulation and regeneration of soot and the investigation of the durability performance of the catalyst, and simulate the aging condition and ash accumulation of the catalyst during the durability of a real vehicle In this case, shorten the catalyst aging performance evaluation time.

Description

technical field [0001] The invention relates to the field of after-treatment of automobile exhaust gas, in particular to a rapid aging method for a catalytic gasoline particle trap. Background technique [0002] In recent years, air pollution has become an important restrictive factor for urban development and improvement of people's living standards. Strengthening the prevention and control of urban motor vehicle pollution and improving the level of emission control are important measures to improve air quality. In 2016, my country issued the latest emission standards of "Light Vehicle Pollutant Emission Limits and Measurement Methods (China's Sixth Phase)", which tightened the emission limits of gaseous pollutants in the exhaust gas, and carried out the quality and quantity of particulate matter emissions from the engine. After 2020, the limits are 3.0mg / km and 6.0*10 11 # / km. Faced with strict particulate matter emission limits, gasoline particulate filter (GPF) is cons...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M17/007
CPCG01M17/007
Inventor 夏文正杨冬霞袁新波贺小昆郑毅颜燕冯丰付铁强赵德鹏景晓军
Owner 昆明贵研催化剂有限责任公司