Browse Publications Technical Papers 2006-01-1373
2006-04-03

GT Model for Passive Flapper Exhaust Valve 2006-01-1373

Passive valves are common acoustic tuning devices for auto exhaust systems. A new mathematical algorithm based on fundamental physics is presented for simulating an exhaust flapper valve. It is programmed into the popular GT Power simulation software as a model component. Algorithm performance is evaluated for predicting pressure drop of an exhaust flapper valve.
The model and software predict pressure and flow for steady state flow through the valve at elevated temperatures. Flow bench simulations and experiments are done. Hot flow results are compared to determine performance. The algorithm model is also compared to a reed valve component available in the standard GT library. A comparison of predictions and measurements show,
  1. 1.
    The error of an “Off the shelf” software component is on the order of 10%.
  2. 2.
    The new algorithm's error is on the order of 2%.

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

Rapid Evaluation of Variable Valve Lift Strategies Using 3-D In-Cylinder Flow Measurements

960951

View Details

TECHNICAL PAPER

Implementation of Fuel Film Compensation Algorithm on the Lamborghini Diablo 6.0 Engine

2001-01-0609

View Details

TECHNICAL PAPER

Numerical Simulation of Intake Port Flow by Using VECTIS CFD Code

2003-32-0072

View Details

X