0
TECHNICAL PAPERS

Control-Oriented Model for Camless Intake Process—Part I

[+] Author and Article Information
M.-S. S. Ashhab, A. G. Stefanopoulou

Mechanical and Environmental Engineering Department, University of California, Santa Barbara, CA 93106

J. A. Cook, M. B. Levin

Ford Motor Company, Scientific Research Laboratory, Dearborn, MI 48121

J. Dyn. Sys., Meas., Control 122(1), 122-130 (Jul 14, 1998) (9 pages) doi:10.1115/1.482447 History: Received July 14, 1998
Copyright © 2000 by ASME
Your Session has timed out. Please sign back in to continue.

References

Figures

Grahic Jump Location
Camless valvetrain controller (“inner loop”) and camless engine controller (“outer loop”)
Grahic Jump Location
Electro-hydraulic camless (dashed), simplified camless (solid), and conventional (dotted) intake valve profiles
Grahic Jump Location
Intake valve profiles for different speeds
Grahic Jump Location
Engine breathing characteristics of a 4-cylinder engine at an engine speed of 1500 rpm
Grahic Jump Location
Cylinder P-V diagrams that demonstrate the pumping loss in a throttled and a camless unthrottled engine (lift profiles are also shown)
Grahic Jump Location
Model (dashed line) versus experimental data (solid line) at 1500 rpm
Grahic Jump Location
Model (dashed line) versus experimental data (solid line) at 3000 rpm
Grahic Jump Location
Model (dashed line) versus experimental data (solid line) at 4000 rpm
Grahic Jump Location
Mean-value cylinder air charge
Grahic Jump Location
Mean-value pumping losses
Grahic Jump Location
Investigation of the effects of the higher order inertial and acoustic dynamics to the mean-value model at an engine speed of 1500 rpm
Grahic Jump Location
Investigation of the effects of the higher order inertial and acoustic dynamics to the mean-value model at an engine speed of 6000 rpm
Grahic Jump Location
P-V diagram with and without Helmholtz dynamics at an engine speed of 6000 rpm. The intake valve closing timings are early (IVC=80 deg), at the event (IVC=180 deg), and late (IVC=230 deg) in the top, middle, and bottom subplots, respectively.
Grahic Jump Location
The performance variables dependence on engine speed for the simplified and higher order intake valve motions: IVO=0 deg,IVL=7 mm, and IVC=180 deg

Tables

Errata

Discussions

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 Journal Articles
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