الفهرس 
Chapter 1 : IntroductionOnly 14 pages are availabe for public view
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Abstract
Investigating the operating conditions of Kirloskar diesel engine, the mostly used type of engine for irrigaain Egypt, introduced many useful facts. Quality of lub· used and outlet temperature of the cooling fluid call for considera tion to give better performance, life-time and
Engine wear, as represented by iron and copper content mulated in the lub oils under test, could be minimised by ing the engine around 60 °c as outlet cooling wa ter temmt~e. Thus, flowrate adjustment at the outlet side of
ling wa ter is a must for the benefit of users. Useful straightte relations and simple mathematical equations could be deduuto predict the iron and copper content variations with
ature limi ts was achieved by analysing other oil parameters
h as TAN, TBN”soot and asphaltene increase as well as change viscosity increase. Thus, optimisation of running conditions give best performance and better wear prevention could be
alised. Lower and higher values of coolant temperature impair ewear resistance, engine cleanliness, oil functions and runnng life of oil pumps.
Comparison between sOme available local lub oils was
rried out leading to selection of the appropriate oil in many spects for field applications. Change of lub oil performance
ing to different base oil and/or additives concentration The work led to prolongation of oil change periods a multiples, or even more, without any diverse effects on On the other hand, appreciable decrease in the
of new oil for each change could be realised.
Based on oil analysis, simulated and extended engine tests, uthor could provide numerous data, correlations and plots
1 for automotive and tractor engineers to master the
mic and safe running of their engines in Egyptian environn1 conditions.
The work does indicate that the effects of oil quality on ne wear and deposits can be quantified using the simulated ne test described. Better knowledge of these effects would it more realistic development off’ut-ure lubricants to counttt deteriorating oil quality.
The work does indicate also that substantial savings in
oil consumption can be achieved. This takes part in energy servation as well as minimising pollution. Anyhow, applicaan of obtained results on actual productive field engines may vide solid trial basis, rather than experimental results,for
aId applications may be recommended for the benefit of the ptian oil market.