Browse Publications Technical Papers 830151
1983-02-01

Exhaust Valve Geometry and Its Effect on Gas Velocity and Turbulence in an Exhaust Port 830151

The influence of fluid flow phenomenon in the exhaust valve and port region on available energy at the turbine of a turbocharged diesel engine is discussed. Zones of high fluid shear, recirculation and vortex shedding all increase fluid entropy and heat transfer and reduce turbine available energy.
Detailed measurement of fluid velocity and turbulence intensity downstream of the exhaust valve have been made for six valve designs. The fluid flow characteristics are discussed and the influence of geometric design changes presented. Overall discharge coefficients are included.
The data will also be useful for validation of detailed fluid dynamic models of flow through valves.

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

Optimization of a Four Stroke Engine by Means of Experimental and 1-D Numerical Analysis

2000-01-0566

View Details

TECHNICAL PAPER

Temperature Controlled Engine Valves

820501

View Details

TECHNICAL PAPER

Turbulence Length Scale Measurements by Two-Point Laser Doppler Anemometry in a Steady Flow

910474

View Details

X