Author(s): Dr. Ganapati Ramavat, Dr. B. Omprakash
Published in: International Journal of Engineering Research & Technology
License: This work is licensed under a Creative Commons Attribution 4.0 International License.
Volume/Issue: Volume. 6 - Issue. 03 , March - 2017
The prices of the petroleum fuels are rising frequently due to fast depletion of natural resources and particularly in Indian context it is beyond the common user. Therefore, alternate fuels for usage in C.I. Engines are gaining importance. Wide investigation is going on the enhancement of the thermal efficiency of C.I. Engine in the Hi-tech world. Even the most efficient Engine rejects two â€“ thirds of heat energy of the fuel, i.e., one-third to the coolant, other one- third to the exhaust and only about one-third is converted to useful work. The Engine performance can be improved if the energy lost is reduced. Numbers of methods are being recommended by several experts and investigators to enhance Engine performance characteristics. Among them, the Low Heat Rejection (LHR) Engine concept is at the forefront. In LHR Engine, the performance of the Engine can be improved by using thermally insulated components. Such components not only diminish heat transfer to the surroundings but also increase the thermal efficiency. Initially a conventional Diesel Engine is converted to LHR Engine by providing different levels of insulations like different piston crown materials with 2mm air gap insulation and ceramic coating on the inner surface of the cylinder head. The different levels of insulations are tried on the C.I. Engine to accomplish the best one in terms of performance, emissions and other combustion parameters.
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