Affiliation:
1. Harbin Engineering University
Abstract
Diesel fuel pressure wave inside Combination Electronic Unit Pump (CEUP) pipeline has been investigated using a 1D viscous damped mathematical model considering the effect of four key fuel properties including density, viscosity, acoustic wave speed and bulk modulus. Wave equation (WE) based mathematical model has been developed in MATLAB using finite difference method. Mathematical model results at various operating conditions of diesel engine have been verified by comparing with those of AMESim numerical model of CEUP and quantified through Root Mean Square Errors (RMSE) and Index of Agreements (IA). Dynamic variations of these fuel properties during fuel injection cycles have also been incorporated in mathematical model by utilizing empirical formulas. Predicted results show that simulated results which consider fuel properties dynamic variations as a function of pressure are more coherent to AMESim numerical model results.
Publisher
Trans Tech Publications, Ltd.
Reference5 articles.
1. Liyun Fan, Bingqi Tian, Chong Yao, et. al . A Study on Cycle Fuel Injection Quantity Variation for a Diesel Engine Combination Electronic Unit Pump System. Journal of Power and Energy, Proceedings of the Institute of Mechanical Engineers Part A, Vol 226, Issue: 5 (2012).
2. Qaisar Hayat, Fan Liyun et al. Analysis of Diesel and Rapeseed Methyl Ester Properties in CEUP Fuel Pipeline using Frequency Dependent Damping Model. International Journal on Smart Sensing and Intelligent System, 2014, Vol. 7, No. 2, pp.498-518.
3. D. N. Moriasi, J. G. Arnold, et al. Model Evaluation Guidelines for Systematic Quantification of Accuracy in Watershed Simulations. Transactions of the ASABE. Vol 50, issue 3 pp.885-900, (2007).
4. Wang Jun-Xiao, Lu Jia-Xiang, et. al. Study on Several Experiential Formulas Used in Simulated Calculation of Fuel Injection Process in Diesel Engines. Vehicle Engine, 2001, Vol. 5(135) pp.6-11.
5. Kristina Ahlin. Modelling of Pressure Waves in the Common Rail Diesel Injection System. Dissertation 2000. www. fs. isy. liu. se/Publications/MSc/00_EX_3081_KA. pdf.