Additionally, compared with diesel fuel, D40 has a lower line pressure, higher pressure fluctuations and has a pump side residual pressure.
与柴油机相比较，D 40最高油管压力下降，油管压力波动幅值较大，具有较高的泵端残余压力。
2
Fuel-pumppressure and capacity can be checked with special gauges. Low pumppressure will cause fuel starvation and poor engine performance.
燃油泵的压力和流通能力可以用专门的仪器进行检查。泵油压力下降可引起供油不足，并降低发动机的性能。
3
The quality of fuel spray is decided by the structure of nozzle and high-pressurefuel pipe in the pump-tube-nozzle fuel injection system, and it influences the whole diesel combustion.