联合国欧洲经济委员会（联合国/欧洲经委会）关于批准以下事项的统一规定的第115号法规:I.安装在机动车中用于在其推进系统中使用液化石油气的特定液化石油气（液化石油气）改装系统二、将安装在机动车上的特定CNG（压缩天然气）改装系统，用于在其推进系统中使用CNG

Regulation No 115 of the Economic Commission for Europe of the United Nations (UN/ECE) Uniform provisions concerning the approval of: I. specific LPG (liquefied petroleum gases) retrofit systems to be installed in motor vehicles for the use of LPG in their propulsion system; — II. specific CNG (compressed natural gas) retrofit systems to be installed in motor vehicles for the use of CNG in their propulsion system