This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Combustion Analysis with Residual Gas as a Design Parameter for Two-Stroke Engines
Technical Paper
2018-32-0045
ISSN: 0148-7191, e-ISSN: 2688-3627
This content contains downloadable datasets
Annotation ability available
Sector:
Language:
English
Abstract
In a variety of applications, two-stroke engines assert their usage as a propulsion unit, for examples in off-road vehicles, scooters, hand-held power tools and others. The outstanding power to weight ratio is the key advantage for two-stroke engines. Furthermore, two-stroke engines convince with high durability and low maintenance demand. However, an increasing environmental awareness, the protection of health and the shortage of fossil resources are the driving factors to further enhance the internal combustion process of two-stroke engines. The reduction of emissions and fuel consumption with a constant power level is focused on.
Developments deal with the optimization of the combustion process itself or the enhancement of the exhaust gas aftertreatment. Especially in very small two-stroke engines an exhaust gas aftertreatment system is rarely applied, due to disadvantages regarding component temperatures and product costs. Beside different parameters, the exhaust gas back pressure mainly influences the residual gas content as well as the gas exchange in two stroke engines. Both are essential for the combustion process quality, which can be determined by values of 50% MFB, COV, glow ignition and knock behavior. Additionally, scavenging losses and the volumetric efficiency vary in dependency of exhaust gas back pressure. The emission level is significantly affected by these values. To gain deeper insights into these engine specific connections, a wide operation range concerning equivalence ratio (rich and lean) as well as ignition timing of a two-stroke engine is analyzed. The aim of research is to declare the limits of the combustion and gas exchange process with respect to the residual gas content. From this, possible optimizations can be derived. To gain knowledge about the combustion specific relations with the focus on residual gas, an approach is presented, which gives an opportunity to estimate the residual gas content inside the combustion chamber for two-stroke engines.
Recommended Content
| Technical Paper | Development of the Aprilia DITECH 50 engine. |
| Technical Paper | Improving the Exhaust Emissions of Two-Stroke Engines by Applying the Activated Radical Combustion |
Authors
Topic
Citation
Piecha, P., Jandl, S., Sturm, S., Schmidt, S. et al., "Combustion Analysis with Residual Gas as a Design Parameter for Two-Stroke Engines," SAE Technical Paper 2018-32-0045, 2018, https://doi.org/10.4271/2018-32-0045.Data Sets - Support Documents
| Title | Description | Download |
|---|---|---|
| Unnamed Dataset 1 |
Also In
References
- Dogahe , M.A. Estimation of Mass Fraction of Residual Gases from Cylinder Pressure Data and Its Application to Modeling for SI Engine Journal of Applied Mathematics , Islamic Azad University of Lahijan 8 4(31) 2012 2008-6083
- Mallikarjuna , J. , Addepalli , K. , Kumar , D. et al. Effect of Ports Configuration on Trapping Efficiency of a Two-Stroke Engine - A CFD Analysis SAE Technical Paper 2011-24-0153 2011 10.4271/2011-24-0153
- Manente , V. , Tunestål , P. , and Johansson , B. A Novel Model for Computing the Trapping Efficiency and Residual Gas Fraction Validated with an Innovative Technique for Measuring the Trapping Efficiency SAE Technical Paper 2008-32-0003 2008 10.4271/2008-32-0003
- Schwarz , F. and Spicher , U. Determination of Residual Gas Fraction in IC Engines SAE Technical Paper 2003-01-3148 2003 10.4271/2003-01-3148
- Heywood , J.B. Internal Combustion Engine Fundamentals McGraw-Hill Book Company 1989 978-0071004992
- Winkler , F. 2009
- Groth , K. 1959
- Neto , A.F.G. , Lopes , F.S. , Carvalho , E.V. et al. Thermodynamic Analysis of Fuels in Gas Phase: Ethanol, Gasoline and Ethanol - Gasoline Predicted by DFT Method Journal of Molecular Modeling 21 10 2015 10.1007/s00894-015-2815-x
- Acree, Jr. , W.E. , Chickos , J.S. NIST Chemistry WebBook Linstrom , P.J. and Mallard , W.G. National Institute of Standards and Technology Gaithersburg, MD 10.18434/T4D303
- Romani , L. , Balduzzi , F. , Vichi , G. , and Ferrara , G. An Experimental Methodology for the Evaluation of the Trapped Air-Fuel Ratio of a Small 2S LPDI Engine SAE Technical Paper 2015-32-0762 2015
- Ausserer , J. , Horn , K. , Polanka , M. , Litke , P. et al. Quantification of Short-Circuiting and Trapping Efficiency in a Small Internal Combustion Engine by GC-MS and GC-TCD SAE Technical Paper 2015-32-0716 2015
- Blair , G.P. 1996 10.4271/R-161
- Heywood , J. B. , Sher , E. The Two-Stroke Cycle Engine 1999 978-1560328315
- Schnuerle , A. 1933
- Kinnen , A. , Layher , W. , and Däschner , H. Electronically Controlled Batteryless Injection System for Small Two-Stroke SI Engines SAE Technical Paper 2012-32-0118 2012 10.4271/2012-32-0118
- Piecha , P. , Ninaus , C. , Schmidt , S. , Kirchberger , R. et al. Practicability and Influencing Factors of a Lean Burn Mode for Two-Stroke Engines in Hand-Held Powertools SAE Technical Paper 2017-32-0043 2017
- Trattner , A. , Grassberger , H. , Schoegl , O. , Schmidt , S. et al. Advantages and Challenges of Lean Operation of Two-Stroke Engines for Hand-Held Power Tools SAE Int. J. Engines 8 1 101 119 2015 10.4271/2014-32-0009
- EPA 2002 2002
- 2016
- Calik , A. , Sorusbay , C. , Ergeneman , M. , Cevirgen , S. et al. Investigation of the Effect of Boost Pressure and Exhaust Gas Recirculation Rate on Nitrogen Oxide and Particulate Matter Emissions in Diesel Engines SAE Technical Paper 2013-24-0017 2013 10.4271/2013-24-0017
- Pischinger , R. , Klell , M. , and Sams , T. Thermodynamik der Verbrennungskraftmaschine Wien, New York Springer 2009 978-3211992760