Browse Publications Technical Papers 2011-01-0368
2011-04-12

Piston and Valve Deactivation for Improved Part Load Performances of Internal Combustion Engines 2011-01-0368

Cylinder deactivation has been proposed so far for improved part load operation of large gasoline engines. In all this application, the cylinder deactivation has been achieved keeping the intake and exhaust valves closed for a particular cylinder, with pistons still following their strokes. The paper presents a new mechanism between the piston and the crankshaft to enable selective deactivation of pistons, therefore decoupling the motion of the piston from the rotation of the crankshaft. The reduced friction mean effective pressure of the new technology enables the use of piston deactivation in large engines not necessarily throttle controlled but also controlled by quantity of fuel injected. Results of performance simulations are proposed for a HSDI V8 engine, producing significant savings during light operation.

SAE MOBILUS

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

Access SAE MOBILUS »

Members save up to 18% 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

Exploring the Advantages of Variable Compression Ratio in Internal Combustion Engines by Using Engine Performance Simulations

2011-01-0364

View Details

TECHNICAL PAPER

The Effect of Valve Strategy on In-Cylinder Flow and Combustion

960582

View Details

JOURNAL ARTICLE

DigitalAir™ Camless FVVA System – Part 1, Valve Train Design, Capability and Performance

2017-01-0635

View Details

X