GB/T 34496-2017Catalyst for heavy-duty gas engine vehicle exhaust purification (English PDF)

1 Scope

This standard specifies the requirements for exhaust gas purification catalyst for heavy gas vehicles, test methods, inspection rules, signs, packaging, transportation, storage and

Quality certificate.

This standard applies to ceramic honeycomb substrate as a carrier and load rare earth, precious metals or other metals and other active components of gas heavy vehicles

Exhaust gas purification catalyst products. The heavy gas vehicles in this standard include M2, M3, N1, N2 and N3 at design speeds greater than 25 km/h

Class and the total mass of more than 3500kg of M1 vehicles. The standard oxidation catalyst (GOC) for lean combustion gas hair

Motivation (CNG/LNG/LPG). The three-way catalyst (TWC) in this standard is suitable for engines with equivalent specific combustion (CNG/LNG /

LPG).

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/T 15089 motor vehicles and trailers classification

GB 17691 compression limit, gas-fired ignition engines and automotive exhaust pollutant emission limits and measurement methods (China III,

IV, V stage)

GB/T 17803 rare earth product grades that method

Durability requirements and test methods of GB 20890 exhaust emission control system for heavy vehicles

GB/T 23277 Methods for chemical analysis of precious metal catalysts Determination of platinum, palladium and rhodium in car exhaust gas purification catalysts Spectrophotometric

Degree method

GB/T 25994 honeycomb ceramics

HJ509 automotive ceramic catalytic converter platinum, palladium, rhodium Determination of inductively coupled plasma-atomic emission spectrometry and inductive coupling

Ion Mass Spectrometry

3 Terms and definitions

GB/T 5181, GB/T 15089 and GB 17691 as defined by the following terms and definitions apply to this document.