1972-02-01

Effect of Air Swirl on Smoke and Gaseous Emissions from Direct-Injection Diesel Engines 720102

This paper describes and discusses the results obtained from tests of the effect of air swirl variations on smoke and gaseous emissions from direct-injection-type diesel engines. Within the limits of the swirl variations used, an increase in swirl reduced emissions of smoke and carbon monoxide but increased nitric oxide emissions. An increase in swirl also makes it possible to retard appreciably the injection timing for optimum engine efficiency, and this more than compensates for the increase in nitric oxide emission due to the increase in swirl. It is also shown that the air swirl intervenes in the processes of smoke and gaseous pollutant formation by affecting the details of the fuel-air mixing processes.

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

Injection Rate Shaping Investigations on a Small – Bore DI Diesel Engine

2009-01-0850

View Details

JOURNAL ARTICLE

Engine Technologies for Clean and High Efficiency Heavy Duty Engines

2012-01-1976

View Details

TECHNICAL PAPER

Investigation of EGR and Miller Cycle for NOx Emissions and Exhaust Temperature Control of a Heavy-Duty Diesel Engine

2017-01-2227

View Details

X