GB11122-2025

Diesel engine oils

柴油机油

GB 11122-2025 é uma norma nacional chinesa obrigatória que entrará em vigor: Diesel engine oils. Setor: Automotivo. Foco: Segurança de produtos. Entrada em vigor: 1 de jul. de 2026.

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 applies to diesel engine oils formulated from base oils and various additives, specifically designed for use in compression-ignition four-stroke diesel engines. It covers product classification, technical requirements, testing methods, and labeling. It is not applicable to oils intended for two-stroke or spark-ignition gasoline engines, which are covered by GB 11121.

Requisitos técnicos

The standard classifies diesel engine oils into six quality grades: CD, CF, CF-4, CH-4, CI-4, and the newly introduced D1. It specifies strict viscosity-temperature performance criteria, separating requirements for 'W' (winter) grades and high-temperature grades, which can be combined as needed. Manufacturers must ensure their multi-grade oils meet both the cold-start and high-temperature viscosity limits. For physicochemical and simulated properties, the standard mandates limits on foam characteristics, evaporation loss, flash point, and mechanical impurities. The new D1 grade introduces strict limits on sulfated ash, sulfur content, and phosphorus content to meet modern emission system protection requirements. Compliance with these chemical limits is mandatory for all new D1 formulations. Regarding engine performance, the standard outlines rigorous bench and engine test requirements for piston cleanliness, wear protection, oxidation control, and soot handling. It incorporates internationally recognized tests such as Mack T-10, Caterpillar 1K/1N, and Cummins ISM, alongside domestic evaluation methods like the CA6DM3 and DCI11 for the D1 grade. Oils must pass these sequence tests to be certified for their respective quality tiers.

Métodos de ensaio

The standard employs a comprehensive suite of bench and engine tests. Viscosity and cold-flow properties are measured using methods like GB/T 265 for kinematic viscosity and GB/T 6538 for apparent viscosity at low temperatures. Chemical analysis includes NB/SH/T 0824 for additive elements and GB/T 2433 for sulfated ash. Engine performance is validated through standardized single and multi-cylinder engine tests, such as the Caterpillar 1M-PC and Mack T-12 procedures, to evaluate high-temperature cleanliness, wear, and oxidation stability.

Perguntas frequentes

What products are regulated under GB 11122-2025?

GB 11122-2025 applies to diesel engine oils used in compression-ignition four-stroke diesel engines. It covers six quality grades: CD, CF, CF-4, CH-4, CI-4, and the newly introduced D1. It does not cover two-stroke or spark-ignition engines.

Are there any significant updates from the previous GB 11122-2006 version?

The 2025 revision deletes the obsolete CC quality grade and introduces the new D1 quality grade. It also updates various engine testing methods (such as Mack T-10, Caterpillar 1P, and Sequence IIIH) and modifies the technical requirements for viscosity-temperature performance, separating requirements for 'W' (winter) and high-temperature viscosity grades. Manufacturers transitioning to the D1 grade must comply within a 3-year transition period.

How does GB 11122-2025 differ from international standards like API or SAE?

GB 11122-2025 aligns closely with international classifications and testing methods from API 1509, ASTM D4485, and SAE J183. However, the new D1 grade introduces specific Chinese comprehensive performance evaluation methods (such as the CA6DM3, DCI11, WP13, and 2.0CTI engine tests) tailored to domestic engine technologies. International manufacturers must verify compliance with these unique D1 test protocols.

The summary above provides a high-level overview of GB 11122-2025. 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 11122-2025 today to access all detailed parameters, tables, and testing procedures.

Indicações de aplicabilidade

Tipo: Segurança
CCS: E34
ICS: 75.100
Órgão competente: National Energy Administration
Comitê técnico: National Energy Administration

Relações

Substitui:GB 11122-2006 (Vigente)