请提供一篇5000字的英语论文，内容是关于“长输管道”方面的。

1. Spraying devices by the control classification 1) mechanical control of fuel injection system 2) The Electrical and Mechanical mixed-control fuel injection system 3) electronic control of fuel injection system. Jetta 1.6 L5V engine fuel injection system for electronic control of fuel injection system, the system through a variety of sensors to monitor the engine running parameters, engine ECU analysis, comparison, calculated after the issue of control fuel injection and ignition time, and other implementation Instructions, through the fuel injector fuel injection to control the length of fuel injection, air-fuel ratio to achieve the mixture of high-precision control.
2. Fuel injection position by Category
1) in-cylinder injection 2), spray tanks. Jetta 1.6 L5V engine fuel injection system for a spray tank, it refers to gasoline sprayed into the gas pipeline in the corresponding parts, tanks, jet spray used low-voltage devices, their low cost and effective work.