Full Content is available to subscribers

Subscribe/Learn More  >

Evaluating the Influence of Charge Motion Control on In-Cylinder Flow Using MTV

[+] Author Affiliations
M. Mittal, H. J. Schock

Michigan State University, East Lansing, MI

R. Sadr

Texas A&M University - Qatar, Doha, Qatar

Paper No. IMECE2008-66490, pp. 819-827; 9 pages
  • ASME 2008 International Mechanical Engineering Congress and Exposition
  • Volume 10: Heat Transfer, Fluid Flows, and Thermal Systems, Parts A, B, and C
  • Boston, Massachusetts, USA, October 31–November 6, 2008
  • Conference Sponsors: ASME
  • ISBN: 978-0-7918-4871-5 | eISBN: 978-0-7918-3840-2
  • Copyright © 2008 by ASME


An experimental study is performed to investigate the effects of charge motion control on flow measurement inside an internal combustion (IC) engine assembly. Molecular Tagging Velocimetry (MTV) is used to obtain the multiple point measurement of the instantaneous velocity field. MTV is a molecular counterpart of PIV based techniques, and it eliminates the use of seed particles. A two-dimensional velocity field is obtained at various crank angle degrees (CADs) for tumble and swirl measurement planes inside an optical engine assembly [1500 and 2500 rpm engine speeds]. Effects of charge motion control are studied considering different cases of: (i) Charge motion control valve (CMCV) deactivated and (ii) CMCV activated. Both the measurement planes are used in each case to study the cycle-to-cycle variability inside an engine cylinder. Probability density functions (PDFs) of the normalized circulation (NC) are calculated from the instantaneous planar velocity to quantify the cycle-to-cycle variations of in-cylinder flows. Different geometries of CMCV produce different effects on the in-cylinder flow field. It is found that the CMCV used in this work has a profound effect on fuel-air mixing; however, its influence is not as significant during the late compression. Therefore, it can be assumed that CMCV has less contribution to enhance the flame speed during the combustion process.

Copyright © 2008 by ASME



Interactive Graphics


Country-Specific Mortality and Growth Failure in Infancy and Yound Children and Association With Material Stature

Use interactive graphics and maps to view and sort country-specific infant and early dhildhood mortality and growth failure data and their association with maternal

Citing articles are presented as examples only. In non-demo SCM6 implementation, integration with CrossRef’s "Cited By" API will populate this tab (http://www.crossref.org/citedby.html).

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In