This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Effects of Cylinder Head Geometry on Mixture Stratification, Combustion and Emissions in a GDI Engine - A CFD Analysis
Technical Paper
2019-01-0009
ISSN: 0148-7191, e-ISSN: 2688-3627
This content contains downloadable datasets
Annotation ability available
Sector:
Language:
English
Abstract
Preparation of air-fuel mixture and its stratification, plays the key role to determine the combustion and emission characteristics in a gasoline direct injection (GDI) engine working in stratified conditions. The mixture stratification is mainly influenced by the in-cylinder flow structure, which mainly relies upon engine geometry i.e. cylinder head, intake port configuration, piston profile etc. Hence in the present analysis, authors have attempted to comprehend the effect of cylinder head geometry on the mixture stratification, combustion and emission characteristics of a GDI engine. The computational fluid dynamics (CFD) analysis is carried out on a single-cylinder, naturally-aspirated four-stroke GDI engine having a pentroof shaped cylinder head. The analysis is carried out at four pentroof angles (PA) viz., 80 (base case), 140, 200 and 250 with the axis of the cylinder. The entire CFD simulations are performed at the engine speed of 2000 rev/min., and the overall equivalence ratio (ER) of 0.75. Finally, it is observed that the PA of 140 produced a rise of about 10.5% in indicated thermal efficiency (ITE) and 3% rise in peak heat release rate (HRR) with a compromise of 10.7% higher NOx emissions than that of the base case.
Recommended Content
Authors
Topic
Citation
Saw, O., Addepalli, S., and Mallikarjuna, J., "Effects of Cylinder Head Geometry on Mixture Stratification, Combustion and Emissions in a GDI Engine - A CFD Analysis," SAE Technical Paper 2019-01-0009, 2019, https://doi.org/10.4271/2019-01-0009.Data Sets - Support Documents
| Title | Description | Download |
|---|---|---|
| Unnamed Dataset 1 | ||
| Unnamed Dataset 2 | ||
| Unnamed Dataset 3 | ||
| Unnamed Dataset 4 | ||
| Unnamed Dataset 5 | ||
| Unnamed Dataset 6 |
Also In
References
- Krishna , A.S. , Mallikarjuna , J.M. , and Kumar , D. Effect of Engine Parameters on In-Cylinder Flows in a Two-Stroke Gasoline Direct Injection Engine Applied Energy 176 282 294 2016
- Anderson , R.W. , Brehob , D.D. , Yang , J. , Vallance , J.K. et al. Understanding the Thermodynamics of Direct Injection Spark Ignition (DISI) Combustion Systems: An Analytical and Experimental Investigation SAE Technical Paper 962018 1996 10.4271/962018
- Kawajiri , K. , Yonozawa , T. , Ohuchi , H. , Sumida , M. et al. Study of Interaction between Spray and Air Motion, and Spray Wall Impingement SAE Technical Paper 2002-01-0836 2002 10.4271/2002-01-0836
- Krishna , A.S. and Mallikarjuna , J.M. Effect of Engine Parameters on Mixture Stratification in a Wall-Guided GDI Engine - A Quantitative CFD Analysis SAE Technical Paper 2017-01-0570 2017 10.4271/2017-01-0570
- Zhao , F. , Lai , M.C. , and Harrington , D.L. Automotive Spark-Ignited Direct-Injection Gasoline Engines Progress in Energy and Combustion Science 25 437 562 1999
- Cole , R.L. , Poola , R.B. , and Sekar , R. Exhaust Emissions of a Vehicle with Gasoline Direct Injection Engine SAE Technical Paper 982605 1998 10.4271/982605
- Stovel , C.H. , Mathews , R.D. , Johnson , B.E. , Ng , H. et al. Emission and Fuel Economy of a 1998 Toyota with a Direct Injection Spark Ignition Engine SAE Technical Paper 1999-01-1527 1999 10.4271/1999-01-1527
- Saw , O.P. and Mallikarjuna , J.M. Comparison of In-Cylinder Flows in a Gasoline Direct Injection Engine with and without Fuel Injection - A CFD Analysis International Conference on Development of Smart Cities: Interface, Governance and Technology Bangalore, India Sep 9-10, 2016
- Church , W. and Farell , P.V. Effects of Intake Port Geometry on Large Scale in Cylinder Flows SAE Technical Paper 98484 1998 10.4271/98484
- Patrie , M.P. , Martin , J.K. , and Engman , T.J. Inlet Port Geometry and Flame Position, Flame Stability and Emissions in an SI Homogeneous Charge Engine SAE Technical Paper 982056 1998 10.4271/982056
- Adomeit , P. , Jakob , M. , Pischinger , S. , Brunn , A. et al. Effect of Intake Port Design on the Flow Field Stability of a Gasoline DI Engine SAE Technical Paper 2011-01-1284 2011 10.4271/2011-01-1284
- Schogl , O. , Edtmayer , H. , Schmidt , S. , Leiber , S. et al. Design of a Tumble-Orientated Intake Port Layout for a Gasoline Combustion Process Used in Power Sport Application SAE Technical Paper 2011-32-0589 2011 10.4271/2011-32-0589
- Changming , H. and Sichuan , X. The Investigation and Application of Variable Tumble Intake System on a DISI Engine SAE Technical Paper 2014-01-2885 2014 10.4271/2014-01-2885
- Corgard , D.D. and Reitz , R.D. Effects of Alternative Fuels and Intake Port Geometry on HSDI Diesel Engine Performance and Emissions SAE Technical Paper 2001-01-0647 2001 10.4271/2001-01-0647
- Uzkan , T. , Borgnakke , C. , and Morel , T. Characterization of Flow Produced by a High-Swirl Inlet Port SAE Technical Paper 830266 1983 10.4271/830266
- Saw , O.P. , Yashas , K. , and Mallikarjuna , J.M. Effect of Fuel Injection Pressure on Mixture Stratification in a GDI Engine - A CFD Analysis SAE Technical Paper 2017-01-2317 2017 10.4271/2017-01-2317
- Haworth , D.C. A Review of Turbulent Combustion Modeling for Multi-Dimensional in-Cylinder CFD SAE Technical Paper 2005-01-0993 2005 10.4271/2005-01-0993
- Holger , L. and Shrimpton , J.S. In-Cylinder Tumble Flow Characteristics and Implications for Fuel-Air Mixing in Direct Injection Gasoline Engines SAE Technical Paper 2003-01-3104 2003 10.4271/2003-01-3104
- Costa , M. , Marchitto , L. , Merola , S.S. , and Sorge , U. Study of Mixture Formation and Early Flame Development in a Research GDI Engine through Numerical Simulation and UV-Digital Imaging Energy 77 88 96 2014
- Su , J. , Xu , M. , Li , T. , Gao , Y. et al. Combined Effects of Cooled EGR and a Higher Geometric Compression Ratio on Thermal Efficiency Improvement of a Downsized Boosted Spark-Ignition Direct Injection Engine Energy Conversion and Management 78 65 73 2014
- Kim , M. and Ohm , I. The Effect of Intake Valve Angle on In-Cylinder Flow during Intake and Compression Process SAE Technical Paper 2007-01-4045 2007 10.4271/2007-01-4045
- Krishna , A.S. , Saw , O.P. , and Mallikarjuna , J.M. Effect of Mixture Distribution on Combustion and Emission Characteristics in a GDI Engine- A CFD Analysis SAE Technical Paper 2017-24-0036 2017 10.4271/2017-24-0036
- Krishna , A.S. , Mallikarjuna , J.M. , Kumar , D. , and Babu , Y.R. In-Cylinder Flow Analysis in a Two-Stroke Engine-A Comparison of Different Turbulence Models Using CFD SAE Technical Paper 2013-01-1085 2013 10.4271/2013-01-1085
- Krishna , A.S. and Mallikarjuna , J.M. Parametric Analysis of a 4-Stroke GDI Engine Using CFD Alexandria Engineering Journal 57 23 34 2018
- Krishna , A.S. and Mallikarjuna , J.M. Quantitative Parametrization of Mixture Distribution in GDI Engines: A CFD Analysis Archives of Computational Methods in Engineering 10.1007/s11831-018-9262-7
- O’Rourke , P.J. and Amsden , A.A. The TAB Method for Numerical Calculation of Spray Droplet Breakup SAE Technical Paper 872089 1987 10.4271/872089
- Amsden , A.A. , O’Rourke , P.J. , and Butler , T.D. 1989
- Givler , S.D. , Raju , M. , Pomraning , E. , Senecal , P.K. et al. Gasoline Combustion Modeling of Direct and Port Fuel Injected Engines Using a Reduced Chemical Mechanism SAE Technical Paper 2013-01-1098 2013 10.4271/2013-01-1098
- Sagayaraj , A.R.G. , Mallikarjuna , J.M. , and Ganesan , V. Energy Efficient Piston Configuration for Effective Air Motion - A CFD Study Applied Energy 102 347 354 2013
- Imaoka , Y. , Shouji , K. , Inoue , T. , and Noda , T. A Study of a Multistage Injection Mechanism for Improving the Combustion of Direct-Injection Gasoline Engines SAE Technical Paper 2015-01-0883 2015 10.4271/2015-01-0883
- 2015
- Freudenhammer , D. , Peterson , B. , Ding , C. , and Boehm , B. The Influence of Cylinder Head Geometry Variations on the Volumetric Intake Flow Captured by Magnetic Resonance Velocimetry SAE Int. J. Engines 8 4 1826 1836 2015 10.4271/2015-01-1697
- Mehl , M. , Chen , J.Y. , Pitz , W.J. , Sarathy , S.M. et al. An Approach for Formulating Surrogates for Gasoline with Application toward a Reduced Surrogate Mechanism for CFD Engine Modeling Energy & Fuels 25 11 5215 5223 2011 10.1021/ef201099y