This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Effects of Injection Timing on Liquid-Phase Fuel Distributions in a Centrally-Injected Four-Valve Direct-Injection Spark-Ignition Engine
Annotation ability available
Sector:
Language:
English
Abstract
An experimental study was carried out to investigate the effects of fuel injection timing on the spatial and temporal development of injected fuel sprays within a firing direct-injection spark-ignition (DISI) engine. It was found that the structure of the injected fuel sprays varied significantly with the timing of the injection event. During the induction stroke and the early part of the compression stroke, the development of the injected fuel sprays was shown to be controlled by the state of the intake and intake-generated gas flows at the start of injection (SOI).The relative influence of these two flow regimes on the injected fuel sprays during this period was also observed to change with injection timing, directly affecting tip penetration, spray/wall impingement and air-fuel mixing. Later in the compression stroke, the results show the development of the injected fuel sprays to be dominated by the increased cylinder pressure at SOI.
Recommended Content
Authors
Citation
Davy, M., Williams, P., and Anderson, R., "Effects of Injection Timing on Liquid-Phase Fuel Distributions in a Centrally-Injected Four-Valve Direct-Injection Spark-Ignition Engine," SAE Technical Paper 982699, 1998, https://doi.org/10.4271/982699.Also In
References
- Jackson, N.S. Stokes, J. Whitaker, P.A. Lake, T.H. 1996 A Direct Injection Stratified Charge Gasoline Combustion System for Future European Passenger Cars Proc. IMechE Seminar on Lean Burn Combustion Engines 3-4 December 1996 London MEP
- Kume, T. Iwamoto, Y. Iida, K. Murakami, M. Akishino, K. Ando, H. 1996 Combustion Control Technologies for Direct Injection SI Engines SAE 960600
- Lake, T.H. Sapsford, S.M. Stokes, J. Jackson, N.S. 1996 Simulation and Development Experience of a Stratified Charge Gasoline Engine SAE 962014
- Anderson, R.W. Yang, J. Brehob, D.D. Vallance, J.K. Whiteaker, R.M. 1996 Understanding the Thermodynamics of Direct Injection Spark Ignition (DISI) Combustion Systems: An Analytical and Experimental Investigation SAE 962018
- Spiegel, L. Spicher, U. 1992 Mixture Formation and Combustion in a Spark Ingnition Engine with Direct Fuel Injection SAE 920521
- Jackson, N.S. Stokes, J. Whitaker, P.A. Lake, T.H. 1997 Stratified and Homogeneous Charge Operation for the Direct Injection Gasoline Engine - High Power with Low Fuel Consumption and Emissions SAE 970543
- Zhao, F-Q. Lai, M-C. Harrington, D.L. 1997 A Review of Mixture Preparation and Combustion Control Strategies for Spark-Ignited Direct-Injection Gasoline Engines SAE 970627
- Fraidl, G.K. Piock, W.F. Wirth, M. 1996 Gasoline Direct Injection: Actual Trends and Future Strategies for Injection and Combustion Systems SAE 960465
- Zhao, F-Q. Yoo, J-H. Liu, Y. Lai, M-C 1996 Spray Dynamics of High Pressure Fuel Injectors for DI Gasoline Engines SAE 961925
- Parrish, S.E. Farrell, P.V. 1997 Transient Spray Characteristics of a Direct-Injection Spark-Ignited Fuel Injector SAE 970629
- Salters, D. Williams, P. Greig., A. Brehob, D. 1996 Fuel Spray Characterisation Within an Optically Accessed Gasoline Direct -Injection Engine Using a CCD Imaging System SAE 961149
- Han, Z. Fan, L. Reitz, R.D. 1997 Multidimensional Modelling of Spray Atomization and Air-Fuel Mixing in a Direct-Injection Spark-Ignition Engine SAE 970884
- Han, Z. Reitz, R.D. Yang, J. Anderson, R.W. 1997 Effects of Injection Timing on Air-Fuel Mixing in a Direct-Injection Spark-Ignition Engine SAE 970625
- Stanglmaier, R.H. Hall, M.J. Matthews, R.D. 1996 Fuel-Spray/Charge-Motion Interaction within the Cylinder of a Direct-Injected, 4-Valve, SI engine SAE 980155
- Williams, P.A. Davy, M.H. Brehob, D.D. 1998 Effects of Injection Timing on the Exhaust Emissions of a Centrally-Injected Four-Valve Direct-Injection Spark-Ignition Engine SAE 98???
- Yang, J. Anderson, R.W. 1998 Fuel Injection Straegies to Increase Full-Load Torque Output of a Direct-Injection SI Engine SAE 980495
- Iwamoto, Y. Noma, K. Nakayama, O. Yamauchi, T. Ando, H. 1997 Development of Gasoline Direct Injection Engine SAE 970541
- Heywood, J.B. 1988 Internal Combustion Engine Fundamentals McGraw -Hill New York
- Benjamin, S.F. 1992 A Phenomenological Model for ‘Barrel’ Swirl in Reciprocating Engines Proc. IMechE Part D: Journal of Automotive Engineering 206 63 71 MEP 1992