Overview
Euro 4 is part of a series of European emission standards established to curb vehicle pollution. Implemented in January 2005, it succeeded Euro 3 and introduced stricter limits for nitrogen oxides (NOx), carbon monoxide (CO), hydrocarbons (HC), and particulate matter (PM). The standard applies to all new passenger cars and light commercial vehicles registered in the European Union, mandating technological upgrades such as advanced catalytic converters and diesel particulate filters. Euro 4 also influenced fuel quality, requiring lower sulfur content in gasoline and diesel to ensure compatibility with emission control systems. Beyond Europe, many countries adopted Euro 4 equivalency standards to align with global environmental goals, making it a benchmark for cleaner mobility.
Key Features
The Euro 4 standard is notable for its dramatic reduction in permissible emissions compared to earlier iterations. For diesel vehicles, NOx emissions were capped at 0.25 g/km, while gasoline vehicles faced a limit of 0.08 g/km. Particulate matter (PM) standards were tightened to 0.025 g/km for diesel engines, driving the adoption of diesel particulate filters (DPFs). Additionally, Euro 4 mandated onboard diagnostics (OBD) systems to monitor emission-related components, ensuring long-term compliance. These requirements pushed automakers to innovate in fuel injection, exhaust gas recirculation (EGR), and selective catalytic reduction (SCR) technologies, setting the stage for future standards like Euro 5 and 6.
Application Areas
Euro 4 primarily targets passenger cars and light commercial vehicles, but its principles extend to heavy-duty vehicles and motorcycles in adapted forms. The standard has been adopted or adapted by non-EU countries, including India (Bharat Stage IV), China (China 4), and parts of South America and Africa, facilitating global harmonization of emission norms. In the EU, Euro 4 compliance was a prerequisite for vehicle registration, influencing fleet renewal programs and urban low-emission zones. The standard also indirectly impacted the aftermarket industry, as retrofitting older vehicles with Euro 4-compliant technologies became a niche market.
Precautions
Compliance with Euro 4 requires meticulous attention to vehicle maintenance and fuel quality. Using low-sulfur fuel is critical to prevent damage to catalytic converters and DPFs. Fleet operators should ensure regular servicing of emission control systems, as malfunctioning components can lead to non-compliance and fines. For manufacturers, achieving Euro 4 certification involves rigorous testing under the New European Driving Cycle (NEDC). Non-compliance risks market exclusion, making pre-certification validation essential. In regions with lax enforcement, counterfeit emission control components pose risks to air quality and public health.
B2B Procurement Guide
When procuring Euro 4-compliant vehicles or components, buyers should request type approval certificates and conformity of production (CoP) documents. For used vehicles, emission test reports from accredited labs are advisable. Bulk purchasers, such as fleet managers, may negotiate warranties for emission-related parts. Suppliers should be vetted for adherence to Euro 4 technical specifications, particularly for after-treatment systems. In emerging markets, verify local equivalency standards to avoid compatibility issues. Price comparisons should account for lifecycle costs, including fuel efficiency and maintenance expenses influenced by emission technologies.
Related Manufacturers
- 主营：康拉德、执行器、传感器、湿度探头、询价速回、同步马达
- 主营：缓冲垫、齿轮泵、取样泵、66870-983、vr103l-02、采样片、混合器、压线钳、分析仪、显示纸、变压器、风速计、气动泵、扭力扳、应力纸、减速箱、99e029600、隔膜泵、中继器、sbb-s0m12、气动阀、开发板、排污阀、光栅尺、砂刀管
- 主营：仪器仪表、传感器、编码器
- 主营：标准品、中药对照品、槲皮万寿菊素、Oleuroside、新绿原酸
- 主营：Oleuroside、桉脂素、化学试剂、β-香树脂酮
- 主营：减速箱、电位计、温度计、刹车钳、电焊枪、定位器、减速机、电磁阀、检测仪、edi模块、变压器、变速箱、编码器、测压仪、继电器、控制器、加油枪、介子机、贴片槽、电池组、接触器、气弹簧、过滤器、整流器、传感器
- 主营：标准品、细辛脂素、百两金素、Dehydroxyeurotinone、延胡索乙素、桃叶珊瑚苷、脱氢紫堇碱
- 主营：酒渣碱、异常山乙素、芦丁标准品、Oleuroside、对照品标准品
- 主营：标准品、中药对照品、试剂、精油、技术服务、提取定制、化合物合成、分析检测、色谱柱、天然产物
- 主营：木脂素、黄酮、查尔酮、Oleuroside、蒽醌
- 主营：高纯度科研试剂
- 主营：压线钳、分析仪、e10uw24r5、气动泵、缝纫机、消音器、腐蚀片、灯模块、减速机、电动泵、真空阀、高度计、双座阀、砂纸片、卡箍钳、差压表、旋转泵、拧紧头、分析筛、溶气泵、热电偶、扫描仪、打标针、测力环、堆叠灯
- 主营：齿轮油、防锈剂、润滑油、euro15w、切削液、液压油、防锈油、冷冻机油、高温油脂、机床导轨油、通用润滑脂、涡轮机油、柴油机油、特种润滑脂、针织机油、主轴油、工业润滑油、合成齿轮油、压缩机油、空压机油、黄油、船用机油、冷却液、切削油