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GB/T 29914-2025: Oxidation catalyst for diesel vehicle exhaust purification
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Std ID	Version	USD	Buy	Deliver [PDF] in	Title (Description)
GB/T 29914-2025	English	359	Add to Cart	4 days [Need to translate]	Oxidation catalyst for diesel vehicle exhaust purification
GB/T 29914-2013	English	299	Add to Cart	3 days [Need to translate]	Oxidation catalyst for diesel vehicle exhaust purification

GB/T 29914-2025: Oxidation catalyst for diesel vehicle exhaust purification

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ICS 77.120.99 CCSH65 National Standards of the People's Republic of China Replaces GB/T 29914-2013 Diesel vehicle exhaust purification oxidation catalyst Published on 2025-10-31 Implemented on May 1, 2026 State Administration for Market Regulation The State Administration for Standardization issued a statement.

Foreword

This document complies with the provisions of GB/T 1.1-2020 "Standardization Work Guidelines Part 1.Structure and Drafting Rules of Standardization Documents". Drafting. This document replaces GB/T 29914-2013 "Oxidation Catalysts for Exhaust Gas Purification in Diesel Vehicles". Compared with GB/T 29914-2013, it includes the following improvements. Aside from structural adjustments and editorial changes, the main technical changes are as follows. a) Added product labeling (see Chapter 4); b) The catalytic performance requirements have been changed (see 5.3, 4.2 of the.2013 version); c) An increased requirement for the plugging rate has been added (see 5.5); d) Added requirements for coating peeling rate (see 5.6); e) Increased coating load requirements (see 5.8); f) The methods for testing appearance requirements (see 6.2, 5.1 and 5.5 of the.2013 edition) and the methods for testing catalytic performance (see 6.3,.2013 edition) have been changed. (See section 5.2 of the.2013 edition), exhaust back pressure testing method (see section 6.4, section 5.7 of the.2013 edition), precious metal content testing method (see section 6.7, section 5.7 of the.2013 edition). Version 5.6); g) Added methods for detecting pore blockage rate (see 6.5), coating peeling rate (see 6.6), and coating load (see 6.8); h) The test methods for emission performance of whole vehicles (engines) (see 5.3 in the.2013 edition) and the test methods for physical performance (see.2013 edition) have been deleted. 5.4); i) The inspection rules have been changed (see Chapter 7, Chapter 6 in the.2013 edition); j) The method for determining the back pressure of diesel vehicle exhaust purification oxidation catalyst at room temperature has been removed (see Appendix A of the.2013 edition); k) A test method for the ignition temperature of liquid hydrocarbon fuel in diesel vehicle exhaust purification oxidation catalyst has been added (see Appendix A). Please note that some content in this document may involve patents. The issuing organization of this document assumes no responsibility for identifying patents. This document was proposed and is under the jurisdiction of the National Rare Earth Standardization Technical Committee (SAC/TC229). This document was drafted by. Kunming Guizhou Research Catalyst Co., Ltd., Guangxi Yuchai Machinery Co., Ltd., and Weichai Power Co., Ltd. The company, Kunming Yunnei Power Co., Ltd., Wuxi Henghe Environmental Protection Technology Co., Ltd., GRINM Rare Earth High Technology Co., Ltd., Kunming University of Science and Technology Baotou Rare Earth Research Institute. The main drafters of this document are. Zhu Jingfang, Ren Dezhi, Yuan Xintao, Yu Fei, Wang Jiaxing, Feng Feng, Mo Rui, Tan Bingqian, Yang Dongxia, and Zhang Yongqi. Chang Shiying, Huang Fenlian, and Wang Yan. This document was first published in.2013, and this is its first revision. Diesel vehicle exhaust purification oxidation catalyst

1 Scope

This document specifies the product marking, technical requirements, and inspection rules for diesel vehicle exhaust purification oxidation catalysts, and describes the corresponding requirements. Experimental methods. This document applies to diesel fuels that use cordierite honeycomb ceramic materials as a carrier and load active components such as rare earth elements, precious metals, or other metals. Vehicle exhaust purification oxidation catalyst.

2 Normative references

The contents of the following documents, through normative references within the text, constitute essential provisions of this document. Dated citations are listed below. For references to documents, only the version corresponding to that date applies to this document; for undated references, the latest version (including all amendments) applies. This document. GB/T 5181 Automobile Emissions Terms and Definitions GB/T 8170 Rules for rounding off numerical values and the representation and determination of limiting values GB 17691 Emission Limits and Measurement Methods for Pollutants from Heavy-Duty Diesel Vehicles (China VI Stage) GB/T 18881-2017 Catalysts for Exhaust Purification in Light-Duty Gasoline Vehicles GB/T 25994-2010 Cellular ceramics HJ451-2008 Technical Requirements for Environmental Protection Products. Diesel Vehicle Exhaust Aftertreatment Devices Determination of Platinum, Palladium, and Rhodium in HJ509 Automotive Ceramic Catalytic Converters. Inductively Coupled Plasma Atomic Emission Spectrometry and Inductively Coupled Plasma Spectrometry, etc. Inductively coupled plasma mass spectrometry QC/T 829-2019 Technical Requirements for Exhaust Aftertreatment Systems of Diesel Vehicles

3 Terms and Definitions

The terms and definitions defined in GB/T 5181 and QC/T 829-2019, as well as the following terms and definitions, apply to this document. 3.1 light-duty diesel vehicle Diesel vehicles with a maximum gross vehicle weight not exceeding 3500 kg. 3.2 Heavy-duty diesel vehicle Diesel vehicles with a maximum gross vehicle weight exceeding 3500 kg. 3.3 DOC Installed in the exhaust system of diesel vehicle engines, it reduces carbon monoxide (CO) and hydrocarbons in the exhaust through a catalytic oxidation reaction. It reduces emissions of pollutants such as HC, and also has the ability to oxidize nitric oxide (NO) to nitrogen dioxide (NO2) and oxidize liquid hydrocarbons from fuel oil. Catalysts that increase catalyst temperature. ...