IMPACT OF VARIABLE INTAKE-VALVE-TIMING ON HOMOGENEOUS CHARGE COMPRESSION IGNITION (HCCI) ENGINE PARAMETERS
M., M., A., P., L., W., M., X., A., T., P., L. (2008). IMPACT OF VARIABLE INTAKE-VALVE-TIMING ON HOMOGENEOUS CHARGE COMPRESSION IGNITION (HCCI) ENGINE PARAMETERS. EKB Journal Management System, 13(13th International Conference on Applied Mechanics and Mechanical Engineering.), 246-256. doi: 10.21608/amme.2008.39314
MAHROUS A-F. M.; POTRZEBOWSKI A.; WYSZYNSKI M. L.; XU H. M.; TSOLAKIS A.; LUSZCZ P.. "IMPACT OF VARIABLE INTAKE-VALVE-TIMING ON HOMOGENEOUS CHARGE COMPRESSION IGNITION (HCCI) ENGINE PARAMETERS". EKB Journal Management System, 13, 13th International Conference on Applied Mechanics and Mechanical Engineering., 2008, 246-256. doi: 10.21608/amme.2008.39314
M., M., A., P., L., W., M., X., A., T., P., L. (2008). 'IMPACT OF VARIABLE INTAKE-VALVE-TIMING ON HOMOGENEOUS CHARGE COMPRESSION IGNITION (HCCI) ENGINE PARAMETERS', EKB Journal Management System, 13(13th International Conference on Applied Mechanics and Mechanical Engineering.), pp. 246-256. doi: 10.21608/amme.2008.39314
M., M., A., P., L., W., M., X., A., T., P., L. IMPACT OF VARIABLE INTAKE-VALVE-TIMING ON HOMOGENEOUS CHARGE COMPRESSION IGNITION (HCCI) ENGINE PARAMETERS. EKB Journal Management System, 2008; 13(13th International Conference on Applied Mechanics and Mechanical Engineering.): 246-256. doi: 10.21608/amme.2008.39314

IMPACT OF VARIABLE INTAKE-VALVE-TIMING ON HOMOGENEOUS CHARGE COMPRESSION IGNITION (HCCI) ENGINE PARAMETERS

The International Conference on Applied Mechanics and Mechanical Engineering
Article 61, Volume 13, 13th International Conference on Applied Mechanics and Mechanical Engineering., May 2008, Pages 246-256
Document Type: Original Article
DOI: 10.21608/amme.2008.39314
Authors
MAHROUS A-F. M.1; POTRZEBOWSKI A.2; WYSZYNSKI M. L.3; XU H. M.4; TSOLAKIS A.5; LUSZCZ P.2
1Ass. Lecturer, Mechanical Power Engineering Dept., Menoufiya University, Shebin El-Kom, Egypt (On leave), PhD student, Mechanical Engineering Dept, University of Birmingham, UK.
2PhD student, Mechanical Engineering Dept, University of Birmingham, UK.
3Professor of Novel Vehicle Technology and Applied Thermodynamics, Mechanical Engineering Dept, University of Birmingham, UK.
4Reader in Automotive Engineering, Mechanical Engineering Dept, University of Birmingham, UK.
5Lecturer in Automotive Engineering, Mechanical Engineering Dept, University of Birmingham, UK.
Abstract
ABSTRACT
The effects of variable intake-valve-timing on the gas exchange process and
performance of a 4-valve direct injection HCCI engine were computationally
investigated using a 1D fluid-dynamic engine cycle simulation code. A non-typical
intake valve strategy was examined; whereby the intake valves were assumed to be
independently actuated with the same valve-lift profile but at different timings. Using
such an intake valves strategy, the obtained results showed a significant improvement
of the engine parameters such as load and volumetric efficiency when compared with
those of the typical intake-valve-timing case. Additionally, minimizing the pumping work
penalty, and consequently improving the fuel economy, was shown as an advantage of
using the non-typical intake-valve-timing with the timing of the early intake valve
coupled with a symmetric degree of exhaust-valve-closing timing.
Keywords
HCCI engine; Variable valve timing; gas exchange process
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