This content is not included in your SAE MOBILUS subscription, or you are not logged in.
Type Analysis of EGR-Strategies for Controlled Auto Ignition (CAI) by Using Numerical Simulations and Optical Measurements
ISSN: 0148-7191, e-ISSN: 2688-3627
Published April 03, 2006 by SAE International in United States
Annotation ability available
The main assignment of Controlled Auto Ignition (CAI) operation range expansion is to reduce the burn rate or combustion noise at high load and to minimize misfire at low load. The potential of two principal EGR strategies is well known to initiate CAI in a wide range of operation map by using a variable train system: the Exhaust Port Recirculation (EPR) for higher part load and the Combustion Chamber Recirculation (CCR - also called Negative Valve Overlap) for lower part load. However the detailed comparison of the ignition phenomena with each EGR strategy has not been fully studied yet. In this paper, EPR and CCR were compared with same operational condition (engine speed and load). For the analysis, flame luminescence and Raman scattering method for optical measurement and STAR-CD (CD-adapco) for numerical simulation are used. It becomes clear that the difference of the global EGR effect on combustion performance independent from its temperature is an important parameter and that the local EGR distribution is a key factor as well.
CitationMori, S., Lang, O., Salber, W., Pischinger, S. et al., "Type Analysis of EGR-Strategies for Controlled Auto Ignition (CAI) by Using Numerical Simulations and Optical Measurements," SAE Technical Paper 2006-01-0630, 2006, https://doi.org/10.4271/2006-01-0630.
Homogeneous Charge Compression Ignition (HCCI) Combustion 2006
Number: SP-2005 ; Published: 2006-04-03
Number: SP-2005 ; Published: 2006-04-03
- OnishiS., HongJ., ShodaK., DoP.J., and KatoS., “Active thermoatmosphere combustion ATAC - A new combustion process for internal combustion engines”, SAE paper 790507
- NoguchiM., TanakaY., TanakaT. and TakeuchiY., “A study on gasoline engine combustion by observation of intermediate reactive products during combustion”, SAE paper 790840
- PischingerS., LangO., SalberW., HahnJ., HortmannK. and BückerC., “Thermodynamical and Mechanical Approach towards a Variable Valve Train for the Controlled Auto Ignition Combustion Process”, SAE paper 2005-01-0762
- KaufmannM., BerckmüllerM., HartmannM., BrehmN., EderA. and SchwarzC., “Methods in the Development of the HCCI-DI Combustion Process in the Gasoline Engine”, 6th Internationales Symposium für Verbrennungsdiagonostik, 79-91(2004)
- Milovanovic N., ChenR. and TurnerJ., “Influence of the Variable Valve Timing Strategy on the Control of a Homogeneous Charge Compression (HCCI) Engine”, SAE paper 2004-01-1899
- CairnsA., BlaxillH., “The Effect of Combined Internal and External Gas Recirculation on Gasoline Controlled Auto-Ignition”, SAE paper 2005-01-0133
- Hyvoenen J.,HaraldssonG. and JohanssonB., “Operating Conditions Using Spark Assisted HCCI Combustion During Combustion Mode Transfer to SI in a Multi-Cylinder VCR-HCCI Engine”, SAE paper 2005-01-0109
- RyanT.W. III, CallahanT.J., MehtaD., “Hcci in a Variable Compression Ratio Engine - Effects of Engine Variables”, SAE paper 2004-01-1971
- OlssonJ.Ola., TunestalP. and JohanssonB., “Boosting for High Load HCCI”, SAE paper 2004-01-0940
- El TahryS.H., “K, -equation for compressible reciprocating engine flows”, AIAA J Energy, 345-353(1983)
- HinzeP.C. and MilesP.C., “Quantitative Measurements of Residual and Fresh Charge Mixing in a Modern SI Engine Using Spontaneous Raman Scattering”, SAE paper 1999-01-1106.
- SchütteM., FinkeH., GrünfeldG., KrügerS., AndresenP., StiebelsB., BlockB., MeyerH. and HentschelW.,“Spatially Resolved Air-Fuel Ratio and Residual Gas Measurements by Spontaneous Raman Scattering in a Firing Direct Injection Gasoline Engine”, SAE paper 2000-01-1795.
- RichterM., AxelssonB., NyholmK. and AldenM., “Real-time calibration of planar laser-induced fluorescence air-fuel ratio measurements in combustion environments using in situ Raman Scattering”, Twenty-seventh symposium on Combustion,pp. 51-57(1998).
- HasselE.P., RAMSES Spectral Synthesis Code, Universität Damstadt, 1996
- EckbrethA.C., “Laser Diagnostics for Combustion Temperature and Species”, Gordon and Breach, Amsterdam, 1996
- GrünefeldG., Beushausen,V., Andresen,P., and Hentschel,W., “A Major origin of cycle-by-cycle Variations oin SI Engines: Cycle-by-Cycle Variations of the Equivalence Ratio and residual Gas of the initial charge”, SAE paper 941880.
- KnappM., “UV Laser Spectroscopy applied to in-cylinder phenomena of Spark-Ignition Engines”, PhD thesis, university of Bielefeld(1996)
- EgermannJ., GöttlerA. and LeipertzA., “Application of Spontaneous Raman Scattering for Studying the Diesel Mixture Formation Process Under Near-Wall Conditions”, SAE paper 2001-01-3496.