This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Characterization of a Multi-Cylinder Torch Ignition System Operating with Homogenous Charge and Lean Mixture
Technical Paper
2014-36-0333
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
The present work aims to analyze a torch ignition system running on lean homogeneous charge, adapted to an Otto cycle multi-cylinder engine. The main objective is to maximize engine efficiency by means of redesigning the ignition system adapting a pre-chamber to the main combustion chamber. This new ignition system allows reducing its IMEP covariance for leaner mixture operation due to the increase of ignition energy availability during the kernel formation. The engine used in this research is a commercial sixteen valve, four cylinders in line with cubic capacity of 1600 cm3. The performance date of baseline engine operating stoichiometrically were used as a reference for the comparison with torch ignition engine output running from stoichiometric mixture to its leaner operational limit. The brake mean effective pressure was maintained constant in all test configurations in order to make possible to compare engines thermal efficiency. The torch ignition system allows faster flame propagation demanding and consequently less ignition advance for the very same operational condition. This phenomenon is a result of much higher turbulence reducing the probability to face knock. Then, the use of leaner mixture in this system became a powerful tool to allow increasing brake efficiency and making possible to recover its power density by means of turbocharger and the increase of the compression ratio for instance. In this way, the torch ignition system becomes an interesting option for highly efficient and less pollutant SI engine.
Authors
- T. A. A. MOREIRA - Instituto Federal de Minas Gerais /Universidade Federal de M
- J. G.C. BAETA - Instituto Federal de Minas Gerais /Universidade Federal de M
- F. A. RODRIGUES FILHO - Universidade Federal de Minas Gerais
- J. E. M BARROS - Universidade Federal de Minas Gerais
- F. J. P. PUJATTI - Universidade Federal de Minas Gerais
- R. MALLE - Universidade Federal de Minas Gerais
Topic
Citation
MOREIRA, T., BAETA, J., FILHO, F., BARROS, J. et al., "Characterization of a Multi-Cylinder Torch Ignition System Operating with Homogenous Charge and Lean Mixture," SAE Technical Paper 2014-36-0333, 2014, https://doi.org/10.4271/2014-36-0333.Also In
References
- MAHLE POWERTRAIN http://www.mahlepowertrain.com/C1257126002DFC22/vwContentByKey/W28MC9UR841STULEN Acesso em: Mai 2014
- MOREIRA , T. A. A Projeto e Construção de um Sistema de Ignição por Lança Chamas com carga estratificada para Motor do Ciclo Otto . Belo Horizonte Dissertação de Mestrado Escola de Engenharia, Universidade Federal de Minas Gerais 2009
- RYU , H. , Chtsu , A. e Asanuma , T. Effect of torch jet direction on combustion and performance of a prechamber spark-ignition engine Paper SAE 870167 1987
- HEYWOOD , J. B. Internal combustion engine fundamentals 1 New York McGraw-Hill, Inc. 1988 930
- DATE , T. Yagi , S. , Ishizuya , A. e Fujii , I. Research and development of the Honda CVCC engine Paper SAE 740605 18 1974
- WOLFF , D. ; TAMURA , M. ; TAI , H. ; SAKURAI , T. Looking into the prechamber of a lean-burn gas engine JSME International Journal 40 1997
- ADAMS , T. G. Theory and evaluation of auxiliary combustion (torch) chambers Paper SAE 780631 19 1978
- MAVINAHALLY , N. S. , Assanis , D. N. , Govinda Mallan , K. R. e Gopalakrishnan , K. V. Torch ignition: Ideal for lean burn premixed-charge engines Journal of Engineering for Gas Turbines and Power 116 793 798 Out. 1994
- MOREIRA , T. A. A Analise e Caracterização de um Sistema de Ignição por Lança Chamas com carga estratificada para Motor do Ciclo Otto . Belo Horizonte Qualificação de Doutorado Escola de Engenharia, Universidade Federal de Minas Gerais 2013
- MOREIRA , T. A. A ; PUJATTI , F. J. P. et al Design and construction methodology of a multi fuel stratified Jet ignition Engine Paper SAE 2013-36-0562 2013