Method of monitoring oil in a vehicle
AssigneeGM Global Technology Operations LLC
InventorsDaniel H. Blossfeld, Matthew J. Snider, James L. Linden
Life of this patent
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Abstract
A method of monitoring oil in a vehicle having an internal combustion engine is provided. The method includes setting an original oil life, which is measured by event units occurring in the engine, and measuring a lapse of the event units. The method calculates a remaining oil life as a function of the lapse of event units and the original oil life. The remaining oil life is expressed in terms of the event units. The method monitors for oil additions and calculates an addition credit from any monitored oil additions. The method also includes calculating a modified oil life as a function of the addition credit, wherein the modified oil life is expressed in terms of the event units.
Claims10
A method of monitoring oil in a vehicle having an internal combustion engine, the method comprising:
- setting an original oil life, wherein the original oil life is measured by event units occurring in the engine;
- measuring a lapse of the event units;
- calculating a remaining oil life as a function of the lapse of event units and the original oil life, wherein the remaining oil life is expressed in terms of the event units;
- monitoring an oil addition;
- calculating an addition credit from the monitored oil addition, wherein the addition credit is calculated by determining the proportion of the monitored oil addition relative to a sump volume of the engine;
- and
- calculating a modified oil life as a function of the addition credit, wherein the modified oil life is expressed in terms of the event units and is determined by adding event units to the remaining oil life as a function of the addition credit.
A method of monitoring oil in a vehicle having an internal combustion engine, the method comprising:
- setting an original oil life, wherein the original oil life is measured by event units occurring in the engine;
- measuring a lapse of the event units;
- calculating a remaining oil life as a function of the lapse of event units and the original oil life, wherein the remaining oil life is expressed in terms of the event units;
- monitoring an oil addition;
- calculating an addition credit from the monitored oil addition, wherein the addition credit is calculated by determining the proportion of the monitored oil addition relative to a sump volume of the engine;
- and
- calculating a modified oil life as a function of the addition credit, wherein the modified oil life is expressed in terms of the event units.
Dependencies are inferred from the claim text.