Patent ID: 8833332
Filing Date: 2014-09-16
Classification: B01J,C10M,F01M,F02B

Abstract:
1. A method of removing contaminants from lubricating oil as it is circulated in a reciprocating piston, multi-cylinder, internal combustion engine in a vehicle; the engine comprising a crank case and an oil pan, the oil pan providing a reservoir for the lubricating oil in which the lubricating oil is covered with an atmosphere comprising air, the lubricating oil and the atmosphere sometimes being mixed with water and fuel contaminants flowing past the pistons; means for withdrawing oil from the lubricating oil reservoir in an oil circulation path incorporating an oil filter, the oil circulation path comprising oil flow from the reservoir through the oil filter and through the engine and back into the oil reservoir, the lubricating oil returning to the reservoir often having water and fuel contaminants; the vehicle and engine further comprising a crank case ventilation system that during engine operation moves air through the crank case and above the lubricating oil reservoir removing the crank case atmosphere and its contents for introduction into the cylinders of the engine; the method comprising: contacting the lubricating oil with a macroporous structure comprising a plurality of micro-porous particles of at least one alumino-silicate composition for selective, reversible adsorption of condensed blow-by contaminants from the lubricating oil; the body being sized and composed to adsorb water and fuel contaminants at times when the engine is not operating, or, when the engine is operating but has not heated the oil to its operating engine temperature; the body releasing adsorbed water and fuel contaminants at higher oil temperatures.