Method for determining the condition of engine oil based on soot

Details Method for determining the condition of engine oil based on soot Method for determining the condition of engine oil based on soot

1997-10-30

1999-06-22

Font, Frank G.

Boots, shoes, and leggings

731173, G01D 2100

Patent

active

059148900

ABSTRACT:
A method for monitoring the condition of oil in an engine is disclosed which includes the steps of determining a plurality of parameters, determining a fuel injection model, determining the area of the cylinder walls that is coated with soot, and responsively determining a soot model. The method may include the additional steps of calculating a value of residual soot, and calculating a value of soot dispersed by dispersants. The accumulation of soot determined from the model may be trended over time to predict the useful life of the oil.

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SAE Technical Paper Series 1987; 870403; Development of an Automatic Engine Oil-Change Indicator System.

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