Engine Cooling System Design and Development

Abstract

Engine cooling is a complex multi-stage process of which only the latter stages, that of heat exchange between water and air, are considered. Cooling system performance targets as air temperature to boil values are indicated. The relationship between engine heat rejection to the coolant, radiator matrix specific dissipation and air temperature to boil is established in a form suitable for simple calculations. Measurement of cooling system quantities and performances of individual components requires suitable test rigs and a full size vehicle wind tunnel. Data acquired from such measurements provides the basis for the application of an analytical approach to the design and development of cooling systems to achieve given cooling performance targets in the most economical manner. A computer programme, capable of embracing the wide range of cooling system parameters, is seen as the most effective way of fully examining both new and alternative designs.