THERMAL LOADING AND WALL TEMPERATURE
as functions of performance of Turbocharged Compression-Ignition Engines
TURBOCHARGING and aftercooling are direct means of increasing the power output of diesels. Higher specific power outputs and lower thermal loads and wall temperatures result from turbocharging.
This paper describes a method by which internal surface temperatures of cylinder walls can be predicted from knowledge of cycle pressure and temperatures. The thermal load and wall temperature were found to be related to indicated power output and affected to a lesser degree by intake manifold conditions and the engine speed.
Test results also showed that the turbocharged engine performance was improved by increasing the air density and reducing its temperature in the intake manifold. The result was higher specific power outputs and lower thermal loads and wall temperatures. Aftercooling is one method to achieve this.