This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Experimental and Theoretical Analysis of a Diesel Fuel Injection System
Technical Paper
1999-01-0199
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
The paper presents experimental and theoretical results obtained for a mechanical Diesel fuel injection system, made up of a distributor-type pump, four delivery pipes and four four-hole injectors. Pressure in the pumping chamber, in two locations along the fuel line and within the injector is measured directly, as well as the injector needle lift. The flow rate is evaluated through the measure of pressure in the injection chamber.
Experimental results are sustained by theoretical results. The numerical model considers systems of ordinary differential equations representing the operation of injector, pump, delivery valve and line volume elements. Only a few model details are presented. Similar approaches are in use by many years, and the accuracy they provide is generally accepted to be fairly good. Theoretical and experimental results are presented vs. the time at different pump speeds, showing a very satisfactory accuracy.
The main objective of the paper is to describe the unsteady flow within the injector, and to show differences with reference to the steady flow. Despite the subject is not adequately covered in the open literature, several reasons suggest that steady and unsteady flow behaviors differ considerably. These differences may affect the prediction of both injection pressure and flow rate.
Recommended Content
Authors
Citation
Cantore, G., Mattarelli, E., and Boretti, A., "Experimental and Theoretical Analysis of a Diesel Fuel Injection System," SAE Technical Paper 1999-01-0199, 1999, https://doi.org/10.4271/1999-01-0199.Also In
References
- Morello, L. Rovera, G. “Global approach to the fuel economy improvement in passenger cars” International Symposium: Powertrain technologies for a 3-litre-car November 4-5 1996 Certosa di Pontignano. Italy
- Bernard, L. Occella, S. Vafidis, C. “Potential of the 4-cylinder small DI diesel engine concept” International Symposium: Powertrain technologies for a 3-litre-car November 4-5 1996 Certosa di Pontignano. Italy
- Foulkes, D. Tabaczynski, R. Boggs, D. Schulte, H. Hermann, H. O. Bartunek, B. “Small DI diesel engines for high fuel economy vehicles” International Symposium: Power-train technologies for a 3-litre-car November 4-5 1996 Certosa di Pontignano. Italy
- Cichocki, R. Ospelt, W. “Technologies for future HSDI passenger car diesel engines” International Symposium: Powertrain technologies for a 3-litre-car November 4-5 1996 Certosa di Pontignano. Italy
- Krieger, K. Hummel, K. Ricco, M. “Potential of CR system for DI passenger car engines” International Symposium: Powertrain technologies for a 3-litre-car November 4-5 1996 Certosa di Pontignano. Italy
- Ishida, S. Sato, K. “Japanese approach to small DI diesel engines” International Symposium: Powertrain technologies for a 3-litre-car November 4-5 1996 Certosa di Pontignano. Italy
- Becchi, G., A. “analytical simulation of fuel injection in Diesel engines” SAE paper No 710568 1971
- Wylie, E. B. Bolt, J. A. El-Erian, M. F. “Diesel fuel injection simulation and experimental correlation,” SAE Paper No. 760551 1976
- Goyal, M. “Modular approach to fuel injection system simulation,” SAE Paper No 780162 1978
- Gibson, D. H. “A flexible fuel injection simulation,” SAE
- Paper No 861567 1986
- Chen, S.K. Chen, S.X. Gebert, K. “Modelling of advanced electronic-hydraulic fuel injection systems:part I. Theory, assumptions and features” Proceedings of ASME 1995 Fall Technical Conference 2 1995
- Catania, A. E. Dongiovanni, C. et alii “Numerical analysis versus experimental investigation of a distributor-type Diesel fuel-injection system” Transactions of the ASME 116 814 828 October 1994
- Catania, A. E. Dongiovanni, C. et alii “Implicit numerical model of a high pressure injection system” ASME Journal of Engineering for Gas Turbine and Power 114 1992 534 543
- Xu, M. Nishida, K. Hiroyasu, H. “A pratical calculation method for injection pressure and spray penetration in Diesel engines” SAE Paper No. 920624 1992
- Diesel Fuel Injection 1st Robert Bosch GmbH 1994
- Bosch, W. “The fuel rate indicator: a new measuring instrument for display of the characteristics of individual injection,” SAE Paper No. 660749 1966
- Bower, G.R. Foster, D.E. “A comparison of the Bosch and Zeuch rate of injection meters,” Sae Paper No. 910724 1991
- Takamura, A. Ohta, T. Fukushima, S. Kamimoto, T. “A study on precise measurement of Diesel fuel injection rate,” SAE Paper No. 920630
- Arcoumanis, C. Baniasad, M.S. “Analysis of consecutive fuel injection rate signals obtained by the Zeuch and Bosch methods” SAE Paper No 930921 1993
- Incropera, F.P. De Witt, D.P. Fundamentals of heat and mass transfer John Wiley & Sons New York 1990