11-10-2014, 02:07 PM
Abstracts: Engine is the heart of the vehicle. An attempt is made to identify the reason of white smoke emission from three wheeler's diesel engine. White smoke is caused by raw, unburned fuel passing into the exhaust stream. Common causes include, Incorrect fuel injection timing,Defective fuel injectors,Low cylinder compression. Low cylinder compression may be caused by leaking valves, sticking piston rings, ring wear, cylinder wear, or cylinder glaze. When white smoke occurs at cold start and then disappears as the engine warms up, the most common causes for white smoke are fouling deposits around piston ring. Continuous evidence of white smoke indicates a mechanical defect, or incorrect fuel timing. In this study there are two major problems. First one is piston ring stuck in the groove and the second one is the crack on the piston crown. So by changing the diameter of inlet valve pocket and changing the thickness of the top land of the piston ring reduce the white smoke emission problem.