Alternative Thermal Barrier coatings for CI engines A Research review (original) (raw)
The depletion of supply of fossil fuels and their increased cost has driven the attention towards energy security. The energy security can be partially achieved by improving the efficiency of energy producing equipment’s. Diesel fuels can be used more efficiently in low heat rejection engines (LHR), in which the temperature of combustion chamber is increased by creating thin layer of ceramics, a thermal barrier. Also the use of thermal barrier coatings (TBCs) to increase the combustion temperature in diesel engines has been pursued for over 20 years. Increased combustion temperature can increase the efficiency of the engine, decrease the CO and unburnt Hydrocarbons (UBHC). TBCs have not yet met with wide success in diesel engine applications. To reach the desirable temperature of 850-900°C in the combustion chamber from the current temperature of 350-400°C, a coating with a thickness of order 1mm is required. This paper gives a complete review on the TBCs on CI engines.
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