1976-02-01

Exhaust Port Heat Rejection in a Piston Engine a Preliminary Report 760766

While it is well known that engine exhaust temperature has an exponential effect on the thermal oxidation of carbon monoxide and unburned hydrocarbons and that the exhaust temperatures of seemingly similar engine designs vary markedly, little is known regarding the effect of exhaust port design on exhaust temperature. This paper describes an experimental program currently in progress that defines the magnitude of heat loss in exhaust ports and the effect of some geometric design variables and of several exhaust port liner designs on exhaust heat loss. The paper reveals that a port designed for minimum heat transfer may result in a 250°F increase in exhaust gas temperature. These results indicate a significant reduction in radiator requirements as well as for greatly improved thermal reactor performance.

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

Transient Performance Development on Dissociated Methanol Fueled Passenger Car

871169

View Details

TECHNICAL PAPER

Pulsair-a Method for Exhaust System Induction of Secondary Air for Emission Control

750172

View Details

TECHNICAL PAPER

An Experimental Investigation of a Multi-Cylinder Engine with Gasoline-Like Fuel towards a High Engine Efficiency

2016-01-0763

View Details

X