This paper presents the findings about performance of the fuel system of a diesel engine at different diesel temperature
obtained through simulation and experiment. It can be seen from these findings that at the same rotational speed of fuel
pump, the initial pressure in the fuel pipe remain unchanged as the fuel temperature increases, the peak pressure at the
side of fuel pipe near the injector delays, and its largest value of pressure decreases. Meanwhile, at the same temperature,
as the rotational speed increases, the initial pressure of fuel pipe is also essentially the same, the arrival of its peaks
delays, and its largest value of pressure increases. The maximum fuel pressure at the side of fuel pipe near the injector
has an increase of 28.9 %, 22.3%, and 13.9% respectively than the previous ones according to its conditions. At the same
rotational speed, as the temperature increases, the injection quantity through the nozzle orifice decreases. At the same
temperature, as the rotational speed increases, the injection quantity through the nozzle orifice increases. These
experimental results are consistent with simulation results.
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