Method for providing an oil change indication to an operator...

Details Method for providing an oil change indication to an operator... Method for providing an oil change indication to an operator...

2007-03-13

2007-03-13

Williams, Hezron (Department: 2856)

Measuring and testing

Liquid analysis or analysis of the suspension of solids in a...

Lubricant testing

Reexamination Certificate

active

11157612

ABSTRACT:
A method for providing an oil change indication to an operator of an internal combustion engine having an exhaust-after-treatment system requiring regeneration, The method includes detecting regeneration events performed on the exhaust-after-treatment system; detecting oil temperature events each time unit an oil temperature is over a threshold value, and providing the oil change indication to the operator as a function of the detected regeneration events and the detected oil temperature events.

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“An Acoustic Automotive Engine Oil Quality Sensor”, Hammond et al., 1997 IEEE International Frequency Control Symposium, pp. 72-80.
SAE 2000-01-1235, “Fuel Transport to the Crankcase, Oil Dilution and HC Return with Breather Flow During the Cold Operation of a SI Engine”, Shayler et al., SAE 2000 World Congress, Detroit, MI, Mar. 6-9, 2000.
SAE 2001-01-2838, “The build-Up of Oil Dilution by Gasoline and the Influence of Vehicle Usage Pattern”, Shayler et al., International Fall Fuels and Lubricants Meeting and Exposition, Baltimore, MD, Oct. 16-19, 2000.
SAE 2002-01-1647, “Study of Fuel Dilution in Direct Injection and Multipoint Injection Gasoline Engines”, Sagawa et al., International Fall Fuels and Lubricants Meeting and Exhibition, Reno, NV, May 6-9, 2002.

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