气体点燃式发动机LNG燃料供给系统研究

A Research on LNG Fuel Supply System of Gas Fuelled Positive Ignition Engines

通过介绍LNG理化特性,探讨LNG气瓶结构、LNG发动机供给系统原理,论述并完善了LNG技术在重卡汽车上的实践与应用。液化天然气在常温常压下,不能通过加压将其液化,而是经过预处理,脱除重烃、硫化物、二氧化碳和水等杂质后,深冷到-162℃,实现天然气的液化。

This paper introduced the physical and chemical properties,investigated the structure of LNG cylinders and the principle of LNG engine supply system,expounded and improved the practice and application of LNG technology to heavy trucks.It is impossible to Liquefy liquefied natural gas through increasing the pressure at normal temperature and pressure,but after pretreatment,removing impurities such as heavy hydrocarbon,sulfides,carbon dioxide and water,when the temperature was cryogenic to-162℃,it would be possible to liquefy natural gas.