1967-02-01

The Differential Compound Engine 670110

A differential compound engine is described which indicates it to be a significant advance over other traction prime movers. Its engine rating, as confirmed by both theoretical and experimental analysis, represents an increase of approximately 150% over the corresponding naturally aspirated engine. Furthermore, the compound mode of operation implies feedback of surplus power to the output shaft and therefore overall efficiencies in excess of engine efficiency, at least over part of the load range. Values of 40% in the neighborhood of the design point can be expected, experimental work having demonstrated engine brake thermal efficiencies in excess of 42-43%. Additional advantages include rising torque characteristics with decreasing output shaft speed, the incorporation of effective engine braking, and response characteristics superior to those of a turbocharged engine.

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

Testing of a Long Haul Demonstrator Vehicle with a Waste Heat Recovery System on Public Road

2016-01-8057

View Details

TECHNICAL PAPER

Development of A Control-Oriented Model of Engine, Transmission and Vehicle Systems for Motor Scooter HIL Testing

2009-01-1779

View Details

TECHNICAL PAPER

Experimental Demonstration of a Model-Based Control Design and Calibration Method for Cost Optimal Euro-VI Engine-Aftertreatment Operation

2013-01-1061

View Details

X