Browse Publications Technical Papers 2001-24-0056
2001-09-23

Two-Stroke GDI: Improvement of Engine Behaviour at Light Loads 2001-24-0056

Direct fuel injection is becoming mandatory for two-stroke S.I. engines, since it allows using only air in the scavenging process, preventing fuel loss from the exhaust port.
However, also combustion irregularity at light loads is a problem of these engines, due to excessive presence of residual gas in the charge. For its solution, additional strategies must be adopted. The two most suitable ones are charge stratification and ATAC (Active Thermo Atmosphere Combustion), which makes use of residual gas energy to ignite fresh gas, turning the effect of residual gas from negative to positive.
In previous papers, the possibility of combining ATAC with different injection systems was proved.
This paper provides further insight on ATAC combined with liquid high-pressure direct injection and shows the studies and the first experimental results relative to charge stratification.

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 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

Further Insight on ATAC and GDI Combination in Two-Stroke Engines

2000-01-0897

View Details

TECHNICAL PAPER

Basic Understanding of Activated Radical Combustion and Its Two-Stroke Engine Application and Benefits

2000-01-1836

View Details

TECHNICAL PAPER

The Application of a Variable Swirl Device to a Two-Stroke Engine of 200 mm Bore

861306

View Details

X