This content is not included in your SAE MOBILUS subscription, or you are not logged in.
Development of a Pre-Chamber Ignition System for Light Duty Truck Engine
ISSN: 0148-7191, e-ISSN: 2688-3627
Published April 03, 2018 by SAE International in United States
This content contains downloadable datasetsAnnotation ability available
In this article the development of a combustion system with a fuel-scavenged pre-chamber is described. Such a system is commonly used in large-bore engines operated with extremely lean mixtures. The authors implemented the scavenged pre-chamber into a light duty truck-size engine with a bore of 102 mm. The lean burn strategy is intended to achieve very low nitrogen oxide (NOx) emissions at low load. At full load a stoichiometric mixture strategy is applied to achieve sufficient power density while simultaneously enabling the use of a relatively simple three-way catalytic converter for exhaust gas aftertreatment.
This work outlines the pre-chamber design features and introduces the results of an experimental investigation of the effect of pre-chamber ignition on a single cylinder testing engine. Simulation results from three operation regimes from both 1 dimensional (1-D) and computational fluid dynamics (CFD) models are presented to provide an understanding of the complicated processes during the entire working cycle of the engine. The CFD model was used to describe the scavenging of the pre-chamber. The combustion process in the pre-chamber and in the main combustion chamber is characterized by a simplified approach without detailed reaction kinetics.
Based on experiments, the pre-chamber engine is able to operate at low load with an air excess ratio (λ) above 2 and very low engine-out NOx emissions. The naturally aspirated pre-chamber engine is also able to operate with a stoichiometric mixture and fully open throttle. CFD results describe the quantities that are not accessible for direct measurement, namely the effectiveness of pre-chamber scavenging, mixture distribution before the start of combustion, and flame propagation after the start of combustion.
CitationVavra, J., Syrovatka, Z., Vitek, O., Macek, J. et al., "Development of a Pre-Chamber Ignition System for Light Duty Truck Engine," SAE Technical Paper 2018-01-1147, 2018, https://doi.org/10.4271/2018-01-1147.
Data Sets - Support Documents
|Unnamed Dataset 1|
|Unnamed Dataset 2|
- Lavoie , G.A. , Ortiz-Soto , E. , Babajimopoulos , A. , Martz , J.B. et al. Thermodynamic Sweet Spot for High Efficiency, Dilute, Boosted Gasoline Engines International Journal of Engine Research 14 3 260 278 2013
- Geiger , J. , Pischinger , S. , Böwing , R. , Koß , H. et al. Ignition Systems for Highly Diluted Mixtures in SI-Engines SAE Technical Paper 1999-01-0799 1999 10.4271/1999-01-0799
- Attard , W. and Blaxill , H. A Single Fuel Pre-Chamber Jet Ignition Powertrain Achieving High Load, High Efficiency and Near Zero NOx Emissions SAE Int. J. Engines 5 3 734 746 2012 10.4271/2011-01-2023
- Toulson , E. , Schock , H.J. , and Attard , W.P. A Review of Pre-Chamber Initiated Jet Ignition Combustion Systems SAE Technical Paper 2010-01-2263 2010 10.4271/2010-01-2263
- Beaty , K. , Egnell , R. , and Ekelung , M. Development of A Low Emission Volvo 9.6 Liter Natural Gas Fueled Bus Engine SAE Technical Paper 921554 1992 10.4271/921554
- Wallesten , J. and Chomiak , J. Investigation of Spark Position Effects in a Small Pre-Chamber on Ignition and Early Flame Propagation SAE Technical Paper 2000-01-2839 2000 10.4271/2000-01-2839
- Mastorakos , E. , Allison , P. , Giusti , A. , De Oliveira , P. et al. Fundamental Aspects of Jet Ignition for Natural Gas Engines SAE Int. J. Engines 10 5 2429 2438 2017 10.4271/2017-24-0097
- Souček , L. 1993
- Vítek , O. , Macek , J. , and Polášek , M. Simulation of Pre-Chambers in an Engine Combustion Chamber Using Available Software SAE Technical Paper 2003-01-0373 2003 10.4271/2003-01-0373
- Vávra , J. , Syrovátka , Z. , Takáts , M. , Barrientos , E. Scavenged Pre-Chamber on a Gas Engine for Light Duty Truck 2016 ASME 2016 Internal Combustion Engine Fall Technical Conference, ICEF 2016 10.1115/ICEF20169423
- Syrovatka , Z. , Takats , M. , and Vavra , J. Analysis of Scavenged Pre-Chamber for Light Duty Truck Gas Engine SAE Technical Paper 2017-24-0095 2017 10.4271/2017-24-0095
- Vavra , J. , Takats , M. , Klir , V. , and Skarohlid , M. Influence of Natural Gas Composition on Turbocharged Stoichiometric SI Engine Performance SAE Technical Paper 2012-01-1647 2012 10.4271/2012-01-1647
- Heywood , J. Internal Combustion Engine Fundamentals McGraw-Hill 1998 0-07-028637-X
- Beeckmann , J. , Hesse , R. , Bejot , F. , Xu , N. et al. Assessment of the Approximation Formula for the Calculation of Methane/Air Laminar Burning Velocities Used in Engine Combustion Models SAE Technical Paper 2017-24-0007 2017 10.4271/2017-24-0007
- Takáts , M. ; Vávra , J. 2014
- Gamma Technologies Inc. 2012
- Vitek , O. , Macek , J. , Tatschl , R. , Pavlovic , Z. et al. LES Simulation of Direct Injection SI-Engine In-Cylinder Flow SAE Technical Paper 2012-01-0138 2012 10.4271/2012-01-0138
- Tatschl , R. , Bogensperger , M. , Pavlovic , Z. , Priesching , P. et al. LES Simulation of Flame Propagation in a Direct-Injection SI-Engine to Identify the Causes of Cycle-To-Cycle Combustion Variations SAE Technical Paper 2013-01-1084 2013 10.4271/2013-01-1084
- R.I Issa Solution of the Implicitly Discretized Fluid Flow Equations by Operator-Splitting Journal of Computational Physics 62 1 1986 40 65 0021-9991 doi.org/10.1016/0021-9991(86)90099-9
- Lesieur , M. , Métais , O. , and Comte , P. Large-Eddy Simulations of Turbulence Cambridge Cambridge University Press 2005 10.1017/CBO9780511755507
- Kobayashi , H. The Subgrid-Scale Models Based on Coherent Structures for Rotating Homogeneous Turbulence and Turbulent Channel Flow Physics of Fluids 17 2005
- Kobayashi , H. , Hama , F. , and Wu , X. Application of a Local SGS Model Based on Coherent Structures to Complex Geometries International Journal of Heat and Fluid Flow 29 640 653 2008
- Richard , S. , Colin , O. , Vermorel , O. , Benkenida , A. et al. Towards Large Eddy Simulation of Combustion in Spark Ignition Engines Proceedings of the Combustion Institute 31 1 3059 3066 2007
- Zeldovich , Y. B. , Sadovnikov , P. Y. and Frank-Kamenetskii , D. A. Oxidation of Nitrogen in Combustion Academy of Sciences of USSR, Institute of Chemical Physics Moscow-Leningrad 1947