Two kinds of systems diagram of the system compared shown in Figure 4, the performance comparison and analysis as shown in table 2.
Electronically controlled high-pressure common-rail fuel injection system of high pressure pipeline, the pressure is always maintained at a constant comparison to the extent that this is because for the pulse of hydraulic pumps in the common rail of the volume increases, a resonant effect, so that the pressure fluctuations Reduce and weaken, when hydraulic changes, by the pressure regulator works, the fuel injector will adjust to the more constant pressure.

Electronically controlled high-pressure common-rail fuel injection system of the fuel injector is controlled by multiple factors, fuel injection control of the basic load factors (the throttle opening of that), speed, temperature, oil temperature and the temperature into and fuel oil "The oxygen content in exhaust gas and how much. Determine the volume of fuel injection at the same time, by the ECU control electromagnetic valve to open the length of time to determine the size of each injector.