الفهرس 
CHAPTER 1 : INTRODUCTIONOnly 14 pages are availabe for public view
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Abstract
Although the cooling system of diesel engines has been subjected to many sophisticated improvements, some developed countries still using diesel engines equipped with a basic open cooling system. In these engines the only function of the cooling system is to preserve the engine temperature acceptable for a wide range of operations and operating conditions.
In this research, the effect of overcooling on the performance of a single cylinder diesel engine has been experimentally investigated. The study showed that the increase of warm up period, low steady state temperature of both cooling water and lube oil, increase of pollutants concentrations, increase of fuel consumption and increase of blow by gases flow rate. Experimental results showed an improvement in specific fuel consumption, reduction of blow-by gases flow rate and reduction in warm up period. The observed results were taken after the amendment process where the temperature of the cooling water has been raised.
Spectrometric analysis of lube oil showed an improvement in the operating life and properties of lube oil as a result of heating of the inlet cooling water.