This content is not included in your SAE MOBILUS subscription, or you are not logged in.
Spark Ignition Discharge Characteristics under Quiescent Conditions and with Convective Flows
ISSN: 0148-7191, e-ISSN: 2688-3627
Published September 21, 2021 by SAE International in United States
Annotation ability available
The arc characteristics and discharge behavior of a representative inductive spark ignition system were characterized with a spark plug calorimeter and a constant volume vessel used to create high-pressure crossflow velocities through the gap of the spark plug. A 14 mm diameter natural gas engine spark plug was used for the measurements. The discharges were into a non-combusting gas, primarily nitrogen.
The spark plug calorimeter was used to determine the electrical-to-thermal energy conversion in the spark gap under quiescent conditions, while the constant volume vessel was used to study ignition arc structure in convective crossflows and imaged with a high-speed camera. Topics included the effect of crossflow velocity, pressure (up to 20 bar at 300 K), and gap distance on breakdown voltage, arc duration and delivered electrical energy. Also of interest was the amount of remaining electrical energy on the coil versus spark duration in a cross flow. Resistance of the arc plasma during the discharge was correlated with arc length and the delivered electrical energy was compared with that dissipated in the internal resistance of the spark plug. The relationship between arc stretch and arc width was studied, as well. The post-breakdown arc voltage and current were correlated with images of the convected plasma arc to elucidate features associated with short-circuiting and restrikes. The relationships among spark duration, arc length and gap flow velocity were also considered. An interesting finding was that the shortened spark duration under high crossflow velocity was due to the more rapid depletion of the electrical energy stored in the secondary side of the inductive ignition circuit rather than to arc instabilities associated with the disturbance of the arc by the flow.
CitationTambasco, C., Li, D., Hall, M., and Matthews, R., "Spark Ignition Discharge Characteristics under Quiescent Conditions and with Convective Flows," SAE Technical Paper 2021-01-1157, 2021, https://doi.org/10.4271/2021-01-1157.
- Pashley , N. , Stone , R. , and Roberts , G. Ignition System Measurement Techniques and Correlations for Breakdown and Arc Voltages and Currents SAE Technical Paper 2000-01-0245 2000 https://doi.org/10.4271/2000-01-0245
- Shiraishi , T. , Teraji , A. , and Moriyoshi , Y. The Effects of Ignition Environment and Discharge Waveform Characteristics on Spark Channel Formation and Relationship between the Discharge Parameters and the EGR Combustion Limit SAE Int. J. Engines 9 1 2016 https://doi.org/10.4271/2015-01-1895
- Yang , Z. , Yu , X. , Yu , S. , Han , X. et al. Effects of Spark Discharge Energy Scheduling on Flame Kernel Formation under Quiescent and Flow Conditions SAE Technical Paper 2019-01-0727 2019 https://doi.org/10.4271/2019-01-0727
- Maly , R. and Vogel , M. Initiation and Propagation of Flame Fronts in Lean CH4-Air Mixtures by the Three Modes of the Ignition Spark 17th Symposium on Combustion, the Combustion Institute 1978 821 831
- Zadeh , P. Schmidt , H. , Atkinson , W. , and Naber , J. Spark Mechanism in High Speed Flow SAE Technical Paper 2019-01-0729 2019 https://doi.org/10.4271/2019-01-0729
- Huang , S. , Li , T. , Wang , N. , Wang , X. et al. Experimental Study on the Characteristics of Short Circuits and Restrikes of Spark Channels SAE Technical Paper 2020-01-1123 2020 https://doi.org/10.4271/2020-01-1123
- Abidin , Z. and Chadwell , C. Parametric Study and Secondary Circuit Model Calibration Using Spark Calorimeter Testing SAE Technical Paper 2015-01-0778 2015 https://doi.org/10.4271/2015-01-0778
- Lakshmipathi , S.M. and Deshpande , S. Evaluation of Spark Plug Energy and Efficiency for Two Wheeler Ignition System SAE Technical Paper 2019-26-0330 2019 https://doi.org/10.4271/2019-26-0330
- Kim , K. , Hall , M.J. , Wilson , P.S. , and Matthews , R.D. Arc-Phase Spark Plug Energy Deposition Characteristics Measured Using a Spark Plug Calorimeter Based on Differential Pressure Measurement Energies 13 2020 3550 10.3390/en13143550
- Kim , K. , Tambasco , C. , Hall , M. , Matthews , R. et al. Multi-Dimensional Spark Ignition Model with Distributed Energy Input and Integrated Circuit Model SAE Technical Paper 2021-01-0405 2021 https://doi.org/10.4271/2021-01-0405
- Kim , K. , Tambasco , C. , Hall , M. , and Matthews , R. Experimental and Modeling Study of Spark Plug Electrode Heat Transfer and Thermal Energy Deposition SAE Technical Paper 2021-01-0480 2021 https://doi.org/10.4271/2021-01-0480
- Breden , D.P. , Karpatne , A. , and Raja , L. Modelling of Electrode Erosion for Prediction of Spark Plug Lifetime SAE Technical Paper 2018-01-0175 2018 https://doi.org/10.4271/2018-01-0175
- Subramaniam , V. , Karpatne , A. , Breden , D. , and Raja , L. Simulation of Spark-Initiated Combustion SAE Technical Paper 2019-01-0226 2019 https://doi.org/10.4271/2019-01-0226
- Fridman , A. and Kennedy , L.A. Plasma Physics and Engineering Taylor and Francis Pub. New York 2004
- Meek , N.F. Electrical Breakdown of Gases London, UK Oxford at the Clarendon Press 1953