Transactions of the Korean Society of Mechanical Engineers B (대한기계학회논문집B)

The Korean Society of Mechanical Engineers (대한기계학회)
권호 표지
DOI QR코드

DOI QR Code

A Study on the Combustion Characteristics of Spark Plug with Pre-ignition Chamber

예연소실을 갖는 점화플러그의 연소 특성에 관한 연구

  • 지명석 (아주자동차대학 자동차계열) ;
  • 김진혁 (충남대학교 BK21 메카트로닉스사업단) ;
  • 유성연 (충남대학교 BK21 메카트로닉스사업단)
  • Published : 2007.08.01
Download PDF
⟨ Previous Next ⟩

Abstract

The new concept spark plug was developed to study its influence on the combustion characteristics of SI engine. It has pre-ignition chamber in the lower end of spark plug and flame hole, in which fresh mixture gas can be introduced without any fuel supply system. This spark plug was tested with a commercial SI engine. Fuel consumption rate, emission gas and MBT timing were measured in the engine dynamometer for various flame hole numbers, hole positions, hole sizes of the pre-ignition chamber of the spark plug. And average flame propagation speed was measured by using the head gasket ionization probe in single cylinder engine. The new concept spark plug induces fast bum in combustion compared with the conventional spark plug, and MBT(Minimum advance for Best Torque) timing was retarded about $3{\sim}5^{\circ}$ crank angle. The flame hole number, hole direction and volume of pre-ignition chamber were found to influence the combustion characteristics.

Keywords

References

  1. Song, J. H., Sunwoo, M. H. and Kim, W. T., 1999, 'A Study on the Engine Performance Improvement of a Lean Burn Engine by High Energy Ignition,' Trans. of the KSAE, Vol. 7, No. 2, pp.31-40
  2. Song, J. H., Seo, Y. H. and Sunwoo, M. H., 2001, 'A Study on the Effects of Ignition Energy and System on the Flame propogation in a constant Volume Combustion Chamber,' Trans. of the KSAE, Vol. 9, No. 1, pp.45-56
  3. Jie, M. S., Kim, M. H. and Kim, W. T., 1993, 'The Effect of Tumble Flow on Engine Performance and Flame Propagation', SAE Technical Paper 931946
  4. Lee, J. S., Kim, J. Y., Lee, J. S., Chung, S. S. and Ha, J. Y., 1998, 'Effects of Ignition Energy Discharge Characteristics on the Lean Flammability Limit,' Trans. of the KSAE, Vol. 6, No. 4, pp.47-55
  5. Shen, H., Hinze, P. C., and Heywood, J. B., 1994, 'A Model for Flame Ignition and Early Development in SI Engine and its Application to Cycle to Cycle Variation,' Trans. of the SAE 942049