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压缩天然气（CNG）汽车大多采用现有的汽油车改装，保留汽车原供油系统，增加一套压缩天然气储备、供给和控制系统，将只用汽油为燃料的汽车改装成既可用汽油也可用压缩天然气为燃料的汽车。用EQ140汽车改装的CNG汽车较好地解决了用汽油或天然气为燃料的功率损失问题，整车性能指标达到国外同类产品水平，只需10～20个月就能收回全部改装投资，获得了较好的经济效益。建议有关部门组织制定完善的CNG汽车改装、操作和保养技术标准，加速CNG汽车的推广应用。
Most compressed natural gas (CNG) vehicles are retrofitted with existing gasoline vehicles, retaining the original fuel supply system of the vehicle, adding a CNG reserve, supply and control system, converting gasoline-only vehicles into gasoline and compression Natural gas-fueled cars. EQ140 modified car CNG car solved the problem of power loss with gasoline or natural gas as fuel, the vehicle performance index reached the level of similar products in foreign countries, only 10 to 20 months can recover all the refit investment, and get more Good economic benefits. It is suggested that the relevant departments organize and formulate sound technical standards for modification, operation and maintenance of CNG vehicles so as to speed up the promotion and application of CNG vehicles.