Oil mist detectors are devices that are meant to protect large diesel engines of all applications against serious damage originating from crank-drive bearings or piston components overheating. In case of “Visatron” oil mist detector, the atmosphere of the crankcase compartment is continuously drawn out by means of header pipes sampling system from each…
When the engine is operating under normal conditions, the atmosphere in the crankcase typically has a significant quantity of relatively large oil droplets, of around 150 – 200 microns, floating around in the existing warm environment. The chance of the droplets being ignited by a heat source is extremely rare due to the small surface…
When the engine is running, the air in the crankcase has the same types and amounts of gases as the air around it. However, there is a heavy shower of coarse oil droplets that are thrown all over the crankcase when the engine is running. If there is too much friction between the surfaces that…