Abstract
Depleting petroleum reserves on the earth and increasing concerns about the environment leads to the question for fuels which are eco-friendly safer for human beings. The objective of present study was to investigate the effect of coating on cylinder head of a Diesel engine on the performance and emission characteristics of exhaust gases using Bio Diesel and High Speed Diesel (HSD) as a fuel. In this study the effect of Tin and Hard Chrome coating on the performance and emission characteristics of diesel engine was investigated using Bio Diesel and High Speed Diesel as a fuel. For this purpose the cylinder head of the test engine were coated with a Tin and Hard Chrome of 100 μ thick by the Electroplating method. For comparing the performance of the engine with coated components with the base engine, readings were taken before and after coating. To make the diesel engine to work with Bio Diesel and High Speed Diesel a modification was done. The engine’s performance was studied for both Bio Diesel and High Speed Diesel with and without Tin, Hard Chrome coating. Also the emissions values are recorded to study the engine’s behavior on emissions. Satisfactory performance was obtained with Tin and Hard Chrome coating compared with a standard diesel engine. The brake thermal efficiency was increased up to 2.08% for High Speed Diesel with Tin coating and there was a significant reduction in the specific fuel consumption. The CO emission in the engine exhaust decreases with coating. Using Bio Diesel and High Speed Diesel fuel for a LHR diesel engine causes an improvement in the performance characteristics and significant reduction in exhaust emissions.
Highlights
The rapid depletion of petroleum fuels and their ever increasing costs have lead to an intensive search for alternate fuels
Substantial heat transfer from the exhausting gases to the valves and ports occurs during the exhaust process. This present study aims to investigate the effect of coating on cylinder head of a Diesel engine on the performance and emission characteristics of exhaust gases using Bio Diesel and High Speed Diesel (HSD) as a fuel
The brake thermal efficiency for tin with 50% HSD and 50% Biodiesel increases by 3.47% when compared with of Hard Chrome
Summary
The rapid depletion of petroleum fuels and their ever increasing costs have lead to an intensive search for alternate fuels. It is high time that scientists and technologists developed an alternate fuel that would run on the existing engines without many modifications and one that would cater to the ever increasing power needs of the countries and domestic market (Beele et al, 1999). Vehicles run on Biodiesel produce lower levels of toxic emissions and leakages are less harmful. It can carbon-neutral in that the growing plants absorb an equivalent amount of CO2 to that emitted by the vehicle in use and unlike diesel it is biodegradable. Bio Diesel is one of the possible fuel for diesel replacement in Compression Ignition (CI) engines.
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