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Digital Twin Spark Ignition for Improved Fuel Economy and Emissions on Four Stroke Engines
Technical Paper
2005-26-008
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Event:
SIAT 2005
Language:
English
Abstract
The Digital Twin Spark Ignition (DTS-i) is a concept developed specifically for small bore four stroke engines with two valves. Two spark plugs placed diametrically opposite to each other in the combustion chamber fire simultaneously igniting the charge. The benefit of this concept is improved fuel economy, better drivability, and reduced engine on a emissions. The concept has been successfully launched on two products namely 150 DTS-i and 180 DTS-i engine. The DTS-i concept helps the products meet the India 2005-emission standard without the use of secondary air injection and exhaust after treatment.
The DTS-i concept allows the compression ratio of the engine to be increased from 9.65 to 9.85. At part load conditions (Indian Driving cycle) the DTS-i technology allows the engine to run leaner at a lambda of 1.2 with excellent stability. On a bore size of 57 mm (150 DTS-i) the maximum flame travel length was reduced by 18 %. The power, torque and specific output per liter were increased, while the fuel consumption and emissions were reduced due to the rapid combustion brought about by the twin spark plugs.
This paper discusses the test results of the 150 DTS-i engine. The cylinder pressure was measured at full load and part load to see the effects of the DTS-i on burn duration, cyclic variation of IMEP, and peak pressure. The engine was run on a dynamometer to simulate road load at 30, 40 and 50 km/h constant speed. The emission and fuel consumption values for the Indian Driving Cycle (IDC) of the DTS-i engine are discussed.
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Authors
Topic
Citation
Ramtilak, A., Joseph, A., Sivakumar, G., and Bhat, S., "Digital Twin Spark Ignition for Improved Fuel Economy and Emissions on Four Stroke Engines," SAE Technical Paper 2005-26-008, 2005, https://doi.org/10.4271/2005-26-008.Also In
References
- Heywood, J. B. “Internal Combustion Engines Fundamentals” McGraw-Hill New York 1988
- Aleiferis, P.G. et al. “Cyclic Variations of Initial Flame Growth in a Honda VTEC-E Lean-Burn Spark Ignition Engine” SAE paper 2000-01-1207
- Brown, A. G. Stone, C. R. Beckwith, P. “Cycle-by-Cycle Variations in Spark Ignition Engine Combustion -Part I: Flame Speed and Combustion Measurements and a Simplified Turbulent Combustion Model” SAE paper 960612
- Ozdor, N. Dulger, M. Sher E. “Cyclic Variability in Spark Ignition Engines A Literature Survey” SAE paper 940987
- Amann, C. A. “Cylinder Pressure Measurement and its Use in Engine Research” SAE paper 852067
- Matekunas, F. A. “Modes and Measures of Cyclic Combustion Variability SAE paper 830337
- Watson, H. C. Goldsworthy, L. C. Milkins, E. E. “Cycle by Cycle Variations of HC, CO and NOx” SAE paper 760753
- Kuroda, H. et al. “The Fast Burn with Heavy EGR, New Approach for Low NOx and Improved Fuel Economy” SAE paper 780006
- Chandra, H. “A Critical Study of the Dual Versus Single Plug Systems in S.I. Engines” SAE paper 940452
- Mattavi, J. N. “The Attribute of Fast Burning Rates in Engines” SAE paper 800920
- Witze, P. O. “The effect of Spark location on Combustion in a Variable Swirl Engine” SAE paper 820044
- Lancaster, D. R. Krieger, R. B. Lienesch, J. H. “Measurement and Analysis of Engine Pressure Data” SAE paper 750026
- Brunt, M. F. Pond, C. R. “Evaluation of Techniques for Absolute Cylinder Pressure Correction” SAE paper 970036