This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Discharge Coefficients for Multi-Hole Fuel Injection Nozzle for Alternate Fuels
Annotation ability available
Sector:
Language:
English
Abstract
The flow of diesel fuel through multi-hole injection nozzles is well understood. There are, however, no comprehensive experimental results for the design of injection nozzles for alternate fuels.
A steady state flow generator was designed and employed to analyze the effects of the physical fuel properties and the needle lift on the discharge coefficient for the nozzle orifice. Three fuels were tested: diesel reference fuel, a 50/50 mixture of diesel fuel and sunflower oil, and 100%. sunflower oil. The fuel viscosities range from 3.0 cS to 30.0 cS at 40°C. Five injection pressures ranging from 3.5 to 13.8 MPa, and eight increments of needle lift between 0.031 and 0.940 mm were used in this investigation.
A significant influence of needle lift, injection nozzle pressure, and physical properties of fuels on the flow coefficient in the normal operating range of a typical diesel engine was proven. Information necessary to establish the onset of turbulent motion for the flow through the injection nozzle can be determined, for the tested fuels, from the experimental results.
Recommended Content
Authors
Topic
Citation
Ziejewski, M. and Goettler, H., "Discharge Coefficients for Multi-Hole Fuel Injection Nozzle for Alternate Fuels," SAE Technical Paper 890448, 1989, https://doi.org/10.4271/890448.Also In
References
- Ziejewski M. Mehta S. “Numerical Optimization Approach to the Design of a Diesel Engine Fuel Injection Nozzle for Alternate Fuels” SAE Paper # 880492 1988
- Yamaoka K. Saito A. Abe N. Okazaki M. “Analysis of Bypass Control Fuel Injection Systems for Small Diesel Engines by Digital Computer” SAE Paper # 730664 1973
- Fukutani I. Watanabe Eiichi “Air Flow through Poppet Inlet Valves-Analysis of Static and Dynamic Flow Coefficients” SAE Paper # 820151 1982
- Matsuoka S. Yokota K. Kamimoto T. Igoshi M. “A Study of Fuel Injection Systems in Diesel Engines” SAE Paper # 760551 1976
- Lichtarowicz A. Duggins R. K. Markland E. “Discharge Coefficients for Incompressible Non-Caritating Flow Through Long Orifices” Journal of Mechanical Engineering Science 7 2 1965
- Ruiz F. Chigier N. “The Effects of Design and Operating Conditions of Fuel Injectors on Flow and Atomization” SAE Paper # 870100 1987
- Goettler H. J. Gessel G. “Program Calculates Valve Throttling Area” Machine Design 59 4 1987
- Hodgson J. L. “The Orifice as a Basis of Flow Measurements” Transactions Institution of Civil Engineers, Paper No. 31 1924
- Ziejewski M. Gill D. S. “Simultaneous Test Procedure Approach to Alternate Fuels Performance Evaluation” SAE paper # 880333 1988