Car use of natural gas in addition to the compressed to high pressure, and there is no difference between civil and industrial gas.
压缩天然气（CNG）是指压缩到3000-3600psig（20.7-24.8MPa）的天然气。天然气通过售气机，按重量（以千克为单位）或当量汽油升（GLE，以与汽油所含能量相等为基础）计量后加到汽车中。天然气的辛烷值在122-130之间。
Compressed natural gas (CNG) refers to the compressed to 3000-3600 psig (20.7 24.8 MPa) of natural gas. Natural gas through the sale of qi activity, according to the weight (in kilograms) or equivalent gasoline rises (GLE, on the basis of energy and gasoline contains equal) added to the car after the measurement. The octane value of the gas between 122-130.
压缩天然气（CNG）汽车燃料系统通常包括：天然气气瓶、减压调压器、各类阀门和管件、混合器（或者天然气喷射装置）、各类电控装置等。
Compressed natural gas (CNG) automobile fuel system usually include: gas cylinders and pressure regulator, various types of valves and pipe fittings, mixer (or gas injection device), all kinds of electric control devices, etc.
CNG气瓶是压缩天然气汽车的主要设备之一。气瓶的设置和生产都由严格的标准控制。CNG车用气瓶可以分为四类：第一类气瓶是全金属气瓶，材料是钢或铝；第二类气瓶采用金属内衬，外面用纤维环状缠绕；第三类气瓶采用薄金属内衬，外面用纤维完全缠绕；第四类气瓶完全是由非金属材料制成，例如玻璃纤维和碳纤维。
CNG cylinders is one of the main equipment of compressed natural gas bus. The setting of cylinders and production are controlled by strict standards. CNG automobile cylinder can be divided into four categories: the first kind of cylinders is all metal cylinder, the material is steel or aluminum; The second category of a cylinder with metal liner, outside with fiber loop winding; The third type of cylinders with thin metal liner, outside with fibre winding completely; The fourth kind of cylinder is made of nonmetal materials, such as glass fiber and carbon fiber.
尽管一般认为由于天然气积碳少，机油更换的次数可以少一些，甚至例行的维护也可以少作一些，但我们认为汽车、发动机和改装系统的定期维护可以保障天然气汽车与汽油车和柴油车相比具有更好的性能。
Although it is generally believed because natural gas carbon deposition, less oil replaced the number of less, or even can make some less routine maintenance, but we think the regular maintenance of cars, engines and systems can protect natural gas vehicle better performance compared with gasoline and diesel.
济南汽车油改气主要部件：减压器，混合器或喷规；开环防真器1套或燃气电脑一只；转换开关总成 1套；动力调节阀 或天然气过滤器1只；高压钢管φ6×1：0.8KG；导气管1只；排气管1米；稳固件包1包；低压管φ19：1米；低压管φ16 0.3米；卡箍φ16-27 4只；卡箍φ22-φ32 1只；卡箍φ34 1只；充气阀1只 。气瓶及气瓶支架一组。
Jinan car oil to gas main components: the pressure reducer, jet mixer or rules; Open loop the bop is a 1 set or gas computer; 1 set of switch assembly; 1 only power regulator or gas filter; High pressure steel pipe phi 6 x 1-0. 8 kg; 1 only airway; 1 m exhaust pipe; Solid 1 package a package; Low pressure pipe phi 19:1 meters; Low pressure pipe phi 16 0.3 meters; Clamp from 16-27 only 4; Clamp 22 - phi phi 1 only 32; Clamp phi 1 only 34; Charging valve 1 only. Cylinders and cylinder bracket.
