刍议GB 18047的修订（二）——兼论对新版ISO 15403的认识

Suggestions on revising national standard GB 18047 （2）——Concurrently discuss new edition of ISO 15403

关键词:  压缩天然气 燃烧性质 沃泊指数 燃烧势 甲烷值

Key words:  compressed natural gas, combustion properties, Wobbe index, combustion potential, methane number (MN), MON

摘要:

根据2006年发布的新版ISO 15403及其技术报告ISO/TR 15403有关内容，对强制性国家标准GB 18047-2000《车用压缩天然气》的修订提出如下建议：① 在第1章（范围）中增加阐明制定此标准的目标与目的的内容；② 将水露点指标修订为水含量指标；③ 取消高位发热量指泊指数的表述，重新编制附录B，并更名为“沃泊指数范围”；⑤ 重新编制附录A，增加抗爆性能、AVL法计算甲烷值和EN 589法计算LPG辛烷值等内容标；④ 修订5.6节对沃

Abstract:

According to new edition of ISO 15403 and ISO/TR 15403 published in 2006, a series of suggestions for revising enforced national standard Compressed natural gas as vehicle fuel(GB 18047) are put forward in this article: (1) the content about purpose and target of GB 18047 should simply be clarified in chapter 1 (scope); (2) the index of water dew point should be revised to that of water content; (3) the index of gross caloric value should be cancelled; (4) the expression of Wobbe index in paragraph 5.6 should be revised and renamed to Wobbe index limits,the content of Appendix B should be re writed; (5) Appendix A should be re writed, the antiknock properties, AVL method for calculating methane number (MN), EN 589 method for calculating octane number and so on should be added