GB/T 23592-2017 English PDF

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GB/T 23592-2017: Catalysts for motorcycle exhaust purification
Status: Valid

GB/T 23592: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 23592-2017	199	Add to Cart	3 days	Catalysts for motorcycle exhaust purification	Valid
GB/T 23592-2009	319	Add to Cart	3 days	Catalyst for motorcycle exhaust purification	Obsolete

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Basic data

Standard ID: GB/T 23592-2017 (GB/T23592-2017)
Description (Translated English): Catalysts for motorcycle exhaust purification
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: G75
Classification of International Standard: 71.100.40
Word Count Estimation: 10,19
Date of Issue: 2017-09-29
Date of Implementation: 2018-04-01
Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China

GB/T 23592-2017: Catalysts for motorcycle exhaust purification

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Catalysts for motorcycle exhaust purification ICS 71.100.40 G75 National Standards of People's Republic of China Replacing GB/T 23592-2009 Motorcycle exhaust gas purification catalyst 2017-09-29 Posted 2018-04-01 implementation General Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China China National Standardization Administration released

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard replaces GB/T 23592-2009 "motorcycle exhaust gas purification catalyst." This standard compared with GB/T 23592-2009, in addition to editorial changes outside the main technical changes are as follows. --- Modify the definition of coating shedding rate (see 3.5); --- Modify the numerical value of the hole density in Product Classification Table 1 (see Chapter 4); --- Increasing the appearance of quality defects (see 5.1); --- Modify the value of product coating off rate (see 5.3); --- Modify the fresh catalyst gas distribution conversion rate, light-off temperature requirements, to improve the requirements of airspeed conditions (see 5.4); --- Increasing the requirements of the catalyst thermal vibration test (see 5.6,6.6); --- Modify the sampling provisions (see 7.4). This standard by the National Rare Earth Standardization Technical Committee (SAC/TC229) and focal point. This standard was drafted unit. Kunming your research catalyst limited liability company, since the Environmental Science and Technology Co., Ltd., non-ferrous metal technology economy Institute. The main drafters of this standard. Liu Qin Xi, Huan source peak, Zheng Tingting, Yuan Xinbo, Liu Zhu Dong, Wang Qinghua, Gao Lan, Wang Jinfeng. This standard replaces the standards previously issued as. --- GB/T 23592-2009. Motorcycle exhaust gas purification catalyst

1 Scope

This standard specifies the motorcycle exhaust gas purification catalyst requirements, test methods, inspection rules, signs, packaging, transportation, storage and quality certificate Ming book. This standard applies to the metal honeycomb substrate as a carrier and load rare earth, precious metals or other metals and other active components of motorcycle exhaust Purification catalyst products.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version applies to this article Pieces. For undated references, the latest edition (including all amendments) applies to this document. GB/T 2828.1 Sampling procedures for sampling inspection - Part 1. Batch inspection sampling plan retrieved by acceptance quality limit (AQL) GB/T 5181 Automotive emission terminology and definitions GB/T 8170 rounded repair rules and limit values of the representation and judgment GB 14622 Motorcycle exhaust emission limits and measurement methods (working conditions, China Ⅲ, Ⅳ stage) GB/T 17803 rare earth product grades that method QC/T 752 Motorcycles and mopeds catalytic converter General technical requirements XB/T 505 gasoline vehicle exhaust gas purification catalyst carrier

3 Terms and definitions

GB/T 5181 defined and the following terms and definitions apply to this document. 3.1 Motorcycle exhaust purification catalyst catalystformotorcycleexhaustpurification The catalytic conversion unit, which is installed in the motorcycle exhaust system to reduce the emission of pollutants, is mainly used to catalyze the oxidation reduction The reaction reduces the emissions of pollutants (carbon monoxide (CO), hydrocarbons (HC) and nitrogen oxides (NOx)) emitted by motorcycles. 3.2 Catalyst conversion efficiency catalystconversionefficiency Under the specified conditions, the rate of change of catalyst inlet and outlet pollutant concentration, according to equation (1) calculation. η = i1-i2 i1 × 100% (1) In the formula. η --- conversion efficiency,%; i1 --- converter inlet pollutant concentration value, on behalf of pollutants CO, CH4, NOX; i2 --- converter outlet pollutant concentration value, on behalf of pollutants CO, CH4, NOX. 3.3 Light-off temperature The catalyst inlet gas temperature corresponding to 50% catalyst conversion efficiency for a given pollutant at a given space velocity. The symbol T50 (i), "T" Celsius (° C), "i" represent the pollutants CO, CH4, NOX, respectively. ......

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