CRANKCASE EXPLOSION
CRANKCASE EXPLOSION In the crankcase of the main engine all the three elements required for fire are available. Lubricating oil as the fuel source is sufficiently present, the air as one of the three things necessary is also present and the heat or energy is produced from a hot spot. Thus a crankcase is the most vulnerable spot for explosions as all the three factors required are available in abundance. What are the causes of crankcase explosion ? The normal content of crankcase is air. In this air there are oil globules (droplets) formed by the mechanical atomization of the oil as it s sprayed from the edge of the bearing and other places and as it is thrown about and churned by the quickly moving parts. If a hot spot occurs the oil particles in the neighborhood will evaporate. This evaporation may cause the formation of a quantity of white condense oil mist in the cooler regions. The continual generation of heat at hot spot vaporization may proceed a space until the ratio of vapour t
