刍议GB18047的修订(二)——兼论对新版ISO15403的认识

Suggestions on revising national standard GB18047(2)——Concurrently discuss new edition of ISO15403

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取消高位发热量指标;④修订5.6节对沃泊指数的表述,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。

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(GB18047) are put forward in this article:(1) the content about purpose and target of GB18047 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.