EMISSION OF ALDEHYDES FROM LHR DIESEL ENGINE WITH CARBURETED BUTANOL AND JATROPHA OIL

Experiments were carried out to study emission of aldehydes from low heat rejection diesel engine, which consist of air gap insulated piston among 3-mm air gap with an alloy of nickel superni crown, air gap insulated liner with superni place in and ceramic coated cylinder head with normal temperature condition of crude jatropha oil - butanol mixture operation with varied injection timing and injection pressures and compared with diesel - butanol mixture operation and also clean diesel operation on conventional engine (CE). At maximum load operation by different percentages of butanol on a mass basis was introduced into the engine via a variable jet carburettor installed at the engine's inlet manifold. Comparative studies were made between LHR engine and conventional engine with diesel, crude jatropha oil and carbureted butanol at recommended injection timings and varied injection pressures. Aldehydes were measured by using the dinitrophenyl hydrazine (DNPH) method at maximum load engine operation of the engine.