GB29743.1-2022

Motor vehicle coolant—Part 1: Fuel vehicle engine coolant

机动车冷却液第1部分：燃油汽车发动机冷却液

GB 29743.1-2022 é uma norma nacional chinesa obrigatória vigente: Motor vehicle coolant—Part 1: Fuel vehicle engine coolant. Setor: Automotivo. Foco: Segurança de produtos. Entrada em vigor: 1 de jul. de 2023.

A aplicabilidade depende do escopo do produto, da via de certificação, dos avisos da autoridade competente e das regras de transição. Solicite uma tradução ou verifique a fonte antes de usar este registro em uma decisão de conformidade.

Visão geral de conformidade

Esta visão geral está disponível por enquanto apenas em inglês.

Escopo e aplicabilidade

This standard specifies the product classification, technical requirements, testing methods, inspection rules, and marking/packaging for fuel vehicle engine coolants. It applies to coolants used in both light-duty and heavy-duty fuel vehicle engines. It is mandatory for manufacturers producing engine coolants for the Chinese fuel vehicle market. The standard covers ethylene glycol, 1,2-propylene glycol, 1,3-propylene glycol, and other types of coolants.

Requisitos técnicos

The standard outlines comprehensive technical requirements for fuel vehicle engine coolants, categorized by base fluid and engine load. Key requirements include physical and chemical properties such as density, freezing point, boiling point, pH, ash content, and chloride/sulfate content limits. Manufacturers must ensure their products meet the specific parameter limits for each coolant type and model. It also defines performance requirements including glassware corrosion, simulated use corrosion, foam tendency, and cast aluminum alloy heat transfer corrosion. For heavy-duty engine coolants, the standard introduces special chemical component requirements, such as specific thresholds for nitrite and molybdate content, or passing the *ASTM D7583* cavitation test. Heavy-duty coolants must satisfy these additional criteria to ensure cylinder liner protection.

Métodos de ensaio

The standard references various SH/T and JT/T testing methods to evaluate coolant properties. Key tests include *SH/T 0089* for boiling point, *SH/T 0090* for freezing point, and *SH/T 0085* for glassware corrosion. It also details specific procedures in normative appendices, such as Appendix B for metal test piece specifications and Appendix D for coolant stability and precipitation testing. Compliance verification requires strict adherence to these specified testing protocols.

Perguntas frequentes

What products are regulated under GB 29743.1-2022?

It regulates engine coolants used in light-duty and heavy-duty fuel vehicles, including ethylene glycol and propylene glycol-based types.

Are there any updates from the previous version of GB 29743?

Yes, it replaces GB 29743-2013, adding 1,3-propylene glycol types, updating ash and chloride requirements, and introducing specific requirements for heavy-duty coolants.

How does GB 29743.1-2022 differ from international standards?

It aligns with some international methods like *ASTM D7583* for cavitation testing but establishes specific Chinese national classifications and parameter limits for the local market.

The summary above provides a high-level overview of GB 29743.1-2022. To ensure complete compliance for your products entering the Chinese market, a precise and professional translation of the full technical specifications is essential. Purchase our high-quality English translation of GB 29743.1-2022 today to access all detailed parameters, tables, and testing procedures.

Indicações de aplicabilidade

Tipo: Produto
CCS: R16
ICS: 03.220.20
Órgão competente: Ministry of Transport
Comitê técnico: National Technical Committee on Automobile Maintenance and Repair of Standardization Administration of China

Relações

Substitui:GB 29743-2013