Browse Publications Technical Papers 2012-01-0163
2012-04-16

Development of Continuously Variable Valve Lift Mechanism for Improved Fuel Economy 2012-01-0163

Delphi has developed a Continuously Variable Valve Lift [CVVL] mechanism to improve spark ignition engine part throttle fuel economy through the minimization of pumping losses and reduction of cam drive torque.
The latest CVVL design is focused on meeting valve lift duration targets derived from combustion analysis at key speed and load points, reducing packaging envelope, and reducing part count for low cost. Delphi's CVVL design process, simulation used to predict performance, and hardware confirmation testing will be presented and discussed in this paper.

SAE MOBILUS

Subscribers can view annotate, and download all of SAE's content. Learn More »

Access SAE MOBILUS »

Preview Document Add to Cart
Members save up to 16% off list price.
Login to see discount.
Special Offer: Download multiple Technical Papers each year? TechSelect is a cost-effective subscription option to select and download 12-100 full-text Technical Papers per year. Find more information here.
We also recommend:
TECHNICAL PAPER

A Compact Dual CAM Variable Valve Operation System to Improve Volumetric Efficiency of Small Engines

2012-01-0161

View Details

JOURNAL ARTICLE

Cylinder Deactivation with Mechanically Fully Variable Valve Train

2012-01-0160

View Details

JOURNAL ARTICLE

Iterative Learning Control for a Fully Flexible Valve Actuation in a Test Cell

2012-01-0162

View Details

X