Rapid Evaluation of Variable Valve Lift Strategies Using 3-D In-Cylinder Flow Measurements 960951
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.
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. Download Citation
Author(s):
Woong-Chul Choi, Yann G. Guezennec, II-Sub Jung
Affiliated:
The Ohio State Univ.
Pages: 14
Event:
International Congress & Exposition
ISSN:
0148-7191
e-ISSN:
2688-3627
Also in:
Variable Valve Actuation and Power Boost-SP-1171, SAE 1996 Transactions - Journal of Engines-V105-3
Related Topics:
Valves
Particulate matter (PM)
Water
Computer software and hardware
Simulation and modeling
SAE MOBILUS
Subscribers can view annotate, and download all of SAE's content.
Learn More »
