1, Principle
Generally believed that diesel engine fuel injection technology experience of the traditional mechanical manipulation of the pure-injector and modern electronically controlled fuel injection two-manipulation
Development stage. Modern electronically controlled fuel injection technology rise, it is computer technology and the rapid development of sensor detection technology results.
At present, the electronically controlled fuel injection technology from the initial position to control the development of time-based control. Electronically controlled common rail fuel injection technology is based
Belong to the latter.
EFI common rail technology refers to the high-pressure pumps, pressure sensors and electronic control unit (ECU) of the closed-loop system
, Will be the injection pressure and injection process have completely separate from the mutual form of a fuel supply. It is high pressure will be high-pressure fuel pumps
Transported to the public for the pipeline, through public for the hydraulic tubing to achieve precise control, high-pressure tubing pressure and engine size
Speed has nothing to do, can be drastically reduced diesel engine oil pressure with engine speed changes in the extent, therefore, will reduce the traditional
Diesel flaws. ECU control the injector fuel injection quantity, and its size depends on fuel orbit (public for tubing), and pressure
Magnetic valves open the length of time. The technology is no longer the traditional piston pump pulse of the principle of supply, but by directly or indirectly for rail
To the formation of a constant high-pressure fuel delivered to each injector, and the help of integration in each injector on the high-speed electromagnetic switch
Valves open and close, regular quantitative control of the injector jet fuel to the engine combustion chamber, thus ensuring optimal combustion engine
Burning ratio and good atomization, and the best time to get angry, at least enough energy and pollution emissions.