主办：陕西省汽车工程学会
ISSN 1671-7988  CN 61-1394/TH
创刊：1976年
汽车实用技术

汽车实用技术 ›› 2022, Vol. 47 ›› Issue (14): 77-81.DOI: 10.16638/j.cnki.1671-7988.2022.014.018

• 测试试验 • 上一篇    

CNG 汽车压力提升与续驶里程的变化关系探讨

张德福 1，张 伟 1，邹博文 2，李静波 1，陈万应 1   

  1. 中国汽车工程研究院股份有限公司，2.西南大学 人工智能学院
  • 发布日期:2022-09-15
  • 通讯作者: 张德福
  • 作者简介:张德福（1964—），男，硕士，高级工程师，研究方向为燃气汽车技术及标准，E-mail: zhangdefu@caeri.com.cn。

Discussion on the Relationship between Pressure Rise and Driving Range of CNG Vehicles

ZHANG Defu1 , ZHANG Wei1 , ZOU Bowen2, LI Jingbo1 , CHEN Wanying1   

  1. 1.China Automotive Engineering Research Institute Company Limited,2.College of Artificial Intelligence, Southwest University
  • Published:2022-09-15
  • Contact: ZHANG Defu

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摘要： 通过 CNG 密度随压力和温度变化关系研究提升压力的理论依据和提高 CNG 汽车续驶 里程的有效措施，建立 CNG 气体压缩因子计算模型，计算得到 35 MPa 是 CNG 压力最佳综合 效能提升点；对比分析 20 MPa 和 35 MPa 压力下 CNG 密度随温度的变化关系，理论状态下 可提高充气效率约 45%，而实际快速充装条件下可提高约 50%～54%；并通过 WLTC 试验对 比续驶里程可增加达 70%，验证了加气方式和充气温度是影响充气效率的关键因素，压力提 升后分级降温充气是进一步提高 CNG 汽车续驶里程的有效措施。

关键词: CNG 汽车；压力提升；续驶里程；变化关系

Abstract: Through the relationship of CNG density changing with pressure and temperature, this paper studies the theoretical basis of increasing pressure and effective measures to improve the driving range of CNG vehicles.The calculation model of CNG gas compression factor is established, and it is calculated that 35 MPa is the best comprehensive efficiency improvement point of CNG pressure.The variation of CNG density with temperature under 20 MPa and 35 MPa pressure is compared and analyzed. The inflation efficiency can be increased by about 45% in theoretical state, and about 50%～54% in actual rapid filling condition.Compared with WLTC test, the driving range can be increased by 70%. It is verified that the filling mode and charging temperature are the key factors affecting the charging efficiency. Graded cooling and charging after pressure increase is an effective measure to further improve the driving range of CNG vehicles.

Key words: CNG vehicle; Pressure increase; Driving range; Change relationship