Rational Liquid Cooling Systems of Internal Combustion Engines

Abstract

The scheme of the cooling system is considered, which can be the basis for creating the most effi cient cooling systems for IC engines of any purpose. It is assumed that the use of any other scheme is devoid of a rational basis. The scheme consists of two connected circulation circuits, in one of which the coolant fl ow rate is an order of magnitude less than in the second. The engine is included in a circuit with increased coolant fl ow. All heat exchangers are in the second circuit. Rules for the formation of such systems are formulated. The basis of the method for calculating such systems is considered. It is indicated that the fl ow rate through each heat exchanger must be determined by calculation to ensure the maximum effi ciency of the cooling system. The considered scheme allows to provide the maximum possible depth of charge air cooling, if its temperature is not specifi ed, or to ensure the minimum cost and compactness of the cooling system, if this temperature is known. The scheme allows regulating the temperatures of the cooling fl uids of the system with all kinds of changes in the engine operating conditions and the ambient temperature.

Analysis of the Sum Minimization Possibilities of Heat Exchanger Core Masses in Internal Combustion Engine Cooling Systems

“…While acknowledging the potential for rationalizing cooling systems by regulating ICC flow through heat exchangers, these works lack clear recommendations on the choice of ICC expenditures. Similar observations apply to [10][11][12][13].…”

“…The results of minimizing M Σ are presented in Table 6. The operational efficiency of each heat exchanger in the cooling system is characterized by the dimensionless criterion I x [39].…”