Boosted HCCI operation on multi cylinder V6 engine

• Autorzy: Misztal J. , Wyszyński M. , Xu H. , Tsolakis A. , Qiao J. , Wyszyński M. , Xu H. , Tsolakis A. , Qiao J. , Wilson T.
• Języki publikacji: EN

Abstrakty

EN

This paper is an extension of work done with boosted 1-cyl Homogenous Charge Compression Ignition (HCCI) engine. As has been proven in the authors’ laboratory on a single cylinder research engine, applying boosting can enable an increased load range with a decreased NOx emission. During the tests which are covered in this paper, a Jaguar V6 research engine with a negative valve overlap facility has been used. The engine is equipped with a mechanically coupled supercharger, which supplies the required amount of air. The introduction of a higher amount of air allows the cylinder mixture to be kept on a highly diluted level; this enables autoignition to be controlled and improves NOx emission. Finally, more air introduced into the cylinder enables more fuel to be injected, which in turn provides for a higher load. This fact is useful as one method to increase the upper load limit for HCCI. Boosted HCCI operation is very sensitive to exhaust gas residuals. It has been proven that valve operation, whether advancing or retarding away from the optimum point will affect NOx emission. Th6is paper will demonstrate that the optimisation of valve timing in connection with lambda value and boost pressure can produce lower NOx emission for the same or even a higher load.

Słowa kluczowe

EN

road transport; combustion engines; HCCI; NOx emissions

• Wydawca: Łukasiewicz Research Network - Institute of Aviation ; European Science Society of Powertrain and Transport KONES Poland ; Wydawnictwo Instytutu Technicznego Wojsk Lotniczych
• Czasopismo: Journal of KONES
• Rocznik: 2006
• Tom: Vol. 13, No. 2
• Strony: 315--321
• Opis fizyczny: Bibliogr. 7 poz., rys.

Twórcy

autor

Misztal J.

autor

Wyszyński M.

autor

Xu H.

autor

Tsolakis A.

autor

Qiao J.

autor

Wyszyński M.

autor

Xu H.

autor

Tsolakis A.

autor

Qiao J.

autor

Wilson T.

• The University of Birmingham, Department of Mechanical Engineering Edgbaston, Birmingham B15 2TT, United Kingdom,

Bibliografia

• [1] Gharahbaghi S., Wilson T., Xu H., Cryan S., Richardson S., Wyszynski M.L., Misztal J., Modelling And Experimental Investigations Of Supercharged HCCI Engines, 2006 SAE World Congress, Detroit, Michigan, April 3-6, 2006. (SAE 2006-01-0634)
• [2] Yap D., Wyszynski M.L., Megaritis A., Xu H., Applying Boosting to Gasoline HCCI -Operation With Residual Gas Trapping, SAE Fuels and Lubricants Meeting, May 2005, Rio de Janeiro, Brasil (SAE 2005-01-2121)
• [3] Yap, D.; Megaritis, A.; M.L. Wyszynski; Xu, H. Effect of inlet valve timing on boosted gasoline HCCI with residual gas trapping, SAE Fuels and Lubricants Meeting, Rio de Janeiro, May 2005, SAE 2005-01-2136
• [4] Christensen M., Johansson B., Supercharged Homogeneous Charge Compression Ignition (HCCI) With Exhaust Gas Recirculation And Pilot Fuel, 2000 International Spring Fuels And Lubricants Meeting & Exposition, Paris, France (SAE 2000-01-1835)
• [5] Cairns A., Blaxill H., Lean Boost And External Exhaust Gas recirculation For High Load Controlled Auto-Ignition, Powertrain & Fluid Systems Conference and Exhibition, San Antonio, Texas USA, October 24-27, 2005 (SAE 2005-01-3744)
• [6] Olsson J., Tunestal P., Ulfvik J., Johansson B., The Effect Of Cooled EGR On Emissions And Performance Of Turbocharged HCCI Engine, 2003 SAE World Congress, Detroit, Michigan March 3-6, 2003 (SAE 2003-01-0743)
• [7] Olsson J., Tunestal P., Johansson B., Boosting For High Load HCCI, 2004 SAE World Congress, Detroit, Michigan, March 8-11, 2004 (SAE 2004-01-0940)