This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Combustion Analysis on a Variable Valve Actuation Spark Ignition Engine Operating With E22 and E100
Technical Paper
2017-01-1069
ISSN: 0148-7191, e-ISSN: 2688-3627
This content contains downloadable datasets
Annotation ability available
Sector:
Language:
English
Abstract
Variable Valve Actuation system (VVA) is a technology developed for improving fuel economy, reducing emissions, and enhancing engine performance mainly by reducing pumping losses. Many automakers have used VVA in their engine projects with excellent results. Usually, VVA systems are built to control the valve events in four different ways: changing the amplitude of the valve lift, the valve opening angle, the valve closing angle or a combination of those modes. A special attention at the calibration activity is needed to reach the optimum performance of this system, beyond this, it was necessary to develop a different way to calibrate, much more focused on the development of the combustion and the gas exchange process requiring an intense use of a pressure indicating system.
This work presents a comparison between different way of actuation in combustion analysis of a VVA system on a spark ignition engine. In this work a naturally aspirated spark ignition engine equipped with a variable valve actuation (FIAT MultiAir II) was used operating with gasoline (E22) and Ethanol (E100) in part-load condition. The cylinder filling was controlled by variation of the closing angle of the intake valve. Cylinder pressure, volumetric efficiency, temperatures and ignition angle were recorded by a pressure indicating system in the same break mean effective pressure conditions for each valve mode operation. The data was processed using Matlab scripts used to calculate the apparent heat release curves, energy conversion efficiency and generalized losses (pumping, friction and thermal).
Recommended Content
| Technical Paper | Testing of Friction Modified Crankcase Oils for Improved Fuel Economy |
| Technical Paper | Crevice Volume Effect on Spark Ignition Engine Efficiency |
Authors
Citation
Trevas, I., baeta, A., Pimenta, C., Fernandes, H. et al., "Combustion Analysis on a Variable Valve Actuation Spark Ignition Engine Operating With E22 and E100," SAE Technical Paper 2017-01-1069, 2017, https://doi.org/10.4271/2017-01-1069.Data Sets - Support Documents
| Title | Description | Download |
|---|---|---|
| Unnamed Dataset 1 |
Also In
References
- Cozzarini , C. and Lenz , H. Emissions and Air Quality Warrendale Society of Automotive Engineers, Inc. 1999 10.4271/R-237
- Mondt , J. Cleaner Cars: The History and Technology of Emission Control since the 1960s Warrendale Society of Automotive Engineers, Inc. 2000 10.4271/R-226
- Schaefer F , Basshuysen RV Reduced emissions and fuel consumption in automobile engines Springer-Verlag 1995
- Segerson , K. , Miceli , T.J. 1998 Voluntary environmental agreements: good or bad news for environmental protection? Journal of Environmental Economics and Management 36 109 130
- Flierl , R. , Gollasch , D. , Knecht , A. , and Hannibal , W. Improvements to a Four Cylinder Gasoline Engine Through the Fully Variable Valve Lift and Timing System UniValve® SAE Technical Paper 2006-01-0223 2006 10.4271/2006-01-0223
- Ma , T. Effect of Variable Engine Valve Timing on Fuel Economy SAE Technical Paper 880390 1988 10.4271/880390
- Mikulic , L. , Schommers , J. , Geringer , B. , Wolf , K. et al. Variable Gas Exchange Systems for S.I. Engines - Layout and Experimental Data SAE Technical Paper 920296 1992 10.4271/920296
- Nagumo S. , Hara S. Study of fuel economy improvement through control of intake valve closing timing: cause of combustion deterioration and improvement J Soc Atomot Eng Rev 1996 16
- Shiga , S. , Nakamura , H. , Karasawa , T. , Yagi , S. et al. Effect of Early-Closing of Intake-Valve on the Engine Performance in a Spark-Ignition Engine SAE Technical Paper 960585 1996 10.4271/960585
- Heywood , B. J. Internal Combustion Engine Fundamentals Ed. McGraw Hill, Inc 1988
- Miklanek , L. , Vitek , O. , Gotfryd , O. , and Klir , V. Study of Unconventional Cycles (Atkinson and Miller) with Mixture Heating as a Means for the Fuel Economy Improvement of a Throttled SI Engine at Part Load SAE Int. J. Engines 5 4 1624 1636 2012 10.4271/2012-01-1678
- Blakey , S. , Saunders , R. , Ma , T. , and Chopra , A. A Design and Experimental Study of an Otto Atkinson Cycle Engine Using Late Intake Valve Closing SAE Technical Paper 910451 1991 10.4271/910451
- Boggs , D. , Hilbert , H. , and Schechter , M. The Otto-Atkinson Cycle Engine-Fuel Economy and Emissions Results and Hardware Design SAE Technical Paper 950089 1995 10.4271/950089
- Goto , T. , Hatamura , K. , Takizawa , S. , Hayama , N. et al. Development of V6 Miller Cycle Gasoline Engine SAE Technical Paper 940198 1994 10.4271/940198
- Anderson , M. , Assanis , D. , and Filipi , Z. First and Second Law Analyses of a Naturally-Aspirated, Miller Cycle, SI Engine with Late Intake Valve Closure SAE Technical Paper 980889 1998 10.4271/980889
- Alvarenga , L. R. , Vianna , M. E. , Pierobom , M. C. , Andrade , R. V.G. Estimativa de Perdas por Atrito e Bombeamento em Motores de Combustão Interna Flex com Sistema de Atuação de Válvulas Variável Utilizando Medição de Pressão na Câmara de Combustão SAE Paper 2012-36-0363
- Bernard , L. , Ferrari A. , Rinolfi R. , Valfidis , C. Fuel Economy Improvement Potential of Uniair Throttleless Technology Venezia: Special 1, ata 56 1/2 Gennaio Febbraio 2003
- AVL product catalog Pressure sensors for combustion analysis Graz 2013
- Zbigniew Zmudka , Stefan Postrzednik , Grzegorz Przybyla Realization of the Atkinson-Miller cycle in spark-ignition engine by means of the fully variable inlet valve control system Archives of thermodynamics 35 2014 3 191 205