Browse Publications Technical Papers 950454
1995-02-01

The Characteristics of Fuel Consumption and Exhaust Emissions of the Side Exhaust Port Rotary Engine 950454

Mazda has been pursuing the research of side exhaust porting for its rotary engine in an effort to improve the engine's fuel efficiency and exhaust emissions characteristics. The side exhaust porting configuration provides greater flexibility in setting port timing and shape, as compared to the peripheral exhaust porting configuration, which is in use in the current-generation rotary engines; the side exhaust porting configuration enables the selection of a port timing more favorable to reduced fuel consumption and exhaust emissions.
The side exhaust port rotary engine used in this research has its exhaust port closure timing around the top dead center (TDC) and has no intake-exhaust timing overlap. As a result, burnt gasses entering the next cycle of combustion are reduced, thus enhancing combustion stability; also, the air-fuel ratio can be set leaner for improved fuel consumption. In addition, since the trailing-side end of the combustion chamber does not open to the exhaust port, HC exhaust emissions are reduced.

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

The Rotary Engine of the NSU Spider

650722

View Details

TECHNICAL PAPER

Development of Sliding Surface Material for Combustion Chamber of High-Output Rotary Engine

852176

View Details

TECHNICAL PAPER

Ion Current Measurement of Diluted Combustion Using a Multi-Electrode Spark Plug

2018-01-1134

View Details

X