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燃气车主注意！新版强制国标发布：车用天然气甲烷值不得低于65_我的网站

一 |     (ECNS) -- China's exports of industrial metal 3D printers jumped 76% year-on-year in the first half of 2026, driven by demand from aerospace, medical and automotive sectors, industry data show.    The machines, which use lasers to fuse metal powder into high‑end components, sell for 5–6 million yuan ($744,000–$893,000) for mid‑sized models and up to 30 million yuan for large systems.    Orders at a Suzhou‑based manufacturer tripled, with overseas sales making up nearly 60% of total.    The global metal 3D printing market was estimated at about $5.4 billion in 2025, up 15.9% from a year earlier, with aerospace remaining the largest application segment and contributing 35% of global revenue, followed by medical and automotive sectors, according to industry estimates.    Chinese firms are shifting from standalone equipment to integrated packages including hardware, software and services. Exports have grown fastest in Asia and Europe, supported by China's complete supply chain and shorter delivery times.    Analysts expect annual growth above 10%, with new applications in consumer electronics and humanoid robotics.    (By Zhang Dongfang)                    。    8月25日消息，近日，市场监管总局（国家标准委）批准发布《车用压缩天然气》（GB 18047-2026）强制性国家标准，将自2027年8月1日起实施。     新标准替代现行GB 18047-2017版本，旨在提升产品质量、保障使用安全、促进贸易公平。    甲烷值是衡量天然气抗爆性能的指标，类似于汽油的辛烷值。甲烷值越低，发动机爆震的可能性越高，长期使用低甲烷值天然气会损害发动机寿命并影响动力输出。    新标准首次将甲烷值纳入强制性技术指标，明确车用压缩天然气的甲烷值应不小于65，与欧洲标准要求保持一致。     同时规定，当甲烷值小于70时，加气站须在经营场所显著位置向社会公示具体数值，让车主知情选择。     新标准还新增了互换性要求，同一地区的车用压缩天然气应能互换使用，确保不同气源的天然气在切换使用时不影响发动机性能和安全性。这意味着车主在不同加气站加气时，不必担心气源差异导致车辆运行异常。    试验方法方面，新标准新增或调整了高位发热量、总硫、硫化氢、二氧化碳、氧气、水露点、水含量等项目的检测方法。    其中甲烷值计算方法新增丙烷爆震指数法（PKI-MN法）作为仲裁试验方法，与国际标准接轨。

二 |     取样与判定规则也进一步完善，新增“取样”独立章节，取样点设在车用压缩天然气交接点，检验结果达到全部质量要求视为合格，不符合时应复测。    

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