This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Rapid Evaluation of Variable Valve Lift Strategies Using 3-D In-Cylinder Flow Measurements
Annotation ability available
Sector:
Language:
English
Abstract
Variable valve lift strategies were evaluated using a Water Analog Engine Simulation Rig with 3-D Particle Tracking Velocimetry (3-D PTV) to measure the 3-D flow field at the end of the intake stroke. The measurements were carried out with a 4-valve, pent-roof type head. The intake valves were actuated by independently controlled servo systems to allow various valve lift profiles to be implemented in software. For each configuration, a minimum of 100 cycles were acquired and processed. Ensemble averaged 3-D mean and fluctuating flow fields were extracted. In addition, a number of integrated parameters (total and fluctuating kinetic energy; swirl, tumble and cross-tumble ratios) were calculated for each case.
Recommended Content
Citation
Choi, W., Guezennec, Y., and Jung, I., "Rapid Evaluation of Variable Valve Lift Strategies Using 3-D In-Cylinder Flow Measurements," SAE Technical Paper 960951, 1996, https://doi.org/10.4271/960951.Also In
References
- Stone, R. Kwan, E. “Variable Valve Actuation mechanisms and the Potential for their Application” SAE Congress paper 890673 1989
- Ahmad, T. Theobald, M. A. “A Survey of Variable Valve Actuation Technology” SAE Congress paper 891674 1989
- Maekawa, K. et al. “Development of a Valve Timing Control System” SAE Congress paper 890680 1989
- Inoue, K. et al. “A High Power, Wide Power Range, Efficient Engine with a Newly Developed Variable Valve Lift and Timing Mechanism” SAE Congress paper 890675 1989
- Hatano, K. et al “The Development of a New Multimode Variable Valve Timing Engine” SAE Congress paper 930878 1993
- Lee Jong-Cheol et al. “The Application of a Lost Motion VVT System to a DOHC SI Engine” SAE Congress paper 950816 1995
- Stein, R. A. “Dual Equal VCT - A Variable Camshaft Timing Strategy for Improved Fuel Economy and Emissions” SAE Congress paper 950975 1995
- Li, Jian-Hong et al. “A Study on Microcomputer-Controlled Variable Valve Timing System” SAE Congress paper 950976 1995
- Guezennec, Y. G. Brodkey, R. S. Trigui, N. Kent, J. C. “Algorithm for Fully Automated Three-Dimensional Particle Image Velocimetry” Experiments in Fluids 14 1994
- Kent, J. C. Trigui, N. Choi, W.-C Guezennec, Y. G. Brodkey, R. S. “Photogrammetric Calibration for Improved Three-Dimensional Particle Tracking Velocimetry (3-D PTV)” Proc. SPIE 1993 2005 400 412 1993
- Kent, J. C. Trigui, N. Choi, W.-C. Guezennec, Y. G. “Characterization of Intake-Generated Flow Fields in an IC engine using 3-D Particle Tracking Velocimetry (3-D PTV)” SAE Congress paper 940279 1994
- Choi, W.-C. “Characterization of Intake Generated Flow Field in an IC Engine” Dept. of Mechanical Engineering, The Ohio State University 1995
- Stivender, D. L. “Intake Valve Throttling (IVT) - A Sonic Throttling Intake Valve Engine” SAE Congress paper 680399