Research Article Open Access

Numerical Analysis of Pressure Pulses in the Jerk Fuel Injection Systems

R. A. Baker1 and T. Firoz1
  • 1 Automotive Focus Group, Faculty of Mechanical Engineering University College of Engineering and Technology Malaysia, Locked Bag 12 MEC City, 2500 Kuantan, Pahang Darul Makmur, Malaysia


Computer software has been developed and described in the present study of thorough parametric analysis and design of a mechanical diesel fuel injection system. The method is based on the numerical solution of one dimensional, unsteady, incompressible flow equations through the fuel pipe along with appropriate initial condition, pump end boundary condition and nozzle end boundary condition. Method of characteristics was used to solve the mathematical model by using a finite difference technique. The computer program has been written in Visual Fortran, which is capable of calculating pressure, velocity and other related parameters at different cam angles at any location of the fuel pipe, including pump and nozzle ends. First of all the numerical scheme was optimized and then its authenticity was verified by comparing its results with calculated and measured results available in the literature. The calculations of the present software were found to have improved agreement and acceptability. It was then used to make a thorough parametric analysis of a typical fuel injection system. The results have been presented in the form of graphs.

American Journal of Applied Sciences
Volume 2 No. 5, 2005, 1003-1007


Submitted On: 10 March 2005 Published On: 31 May 2005

How to Cite: Baker, R. A. & Firoz, T. (2005). Numerical Analysis of Pressure Pulses in the Jerk Fuel Injection Systems. American Journal of Applied Sciences, 2(5), 1003-1007.

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  • Characteristic Method
  • Finite Difference
  • Fuel Injection System
  • Software Development