Gm Global Technolgoy Operations, Inc.

Matthew J Snider

Eric W Schneider

Robert M Olree

Daniel Hicks Blossfeld

David R Staley

Eric R Johnson

James L Linden

Steven J Andrasko

Robert Lionel Jacques

David P Quigley

Andrew E Buczynsky

Donald J Smolenski

Steven P Kemp

Spyros Tseregounis

Michael Seemann

Richard A Barkman

Robert T Stockwell

A system, for use in accounting for an effect of a long-trip cycle on remaining life of engine oil, being used in a vehicle, using a long-trip rebate value. The system includes a computer processor and a non-transitory computer-readable medium that is in operative communication with the processor and has instructions that, when executed by the processor, cause the processor to perform various operations. The operations include determining a long-trip time indicating an amount of time that the vehicle was operated recently in the long-trip cycle. The operations further include determining the long-trip rebate according to a rebate function using the determined long-trip time.

Systems and methods for accurately compensating for a change in amount of unwanted fluid diluted in engine oil resulting from a recent long trip

Systems and methods for automatically evaluating the useful life of an engine oil based on data corresponding to a plurality of preselected key oil properties. The evaluation includes determining, in connection with each of the pre-selected key oil properties, a first current measured oil property value, a first reference oil property value, a first deterioration-limit value, and a first weighting factor. The evaluation also includes determining a single index value, indicating a state of deterioration of the engine oil, in a calculation using each of the values and factors.

Systems and methods for determining a state of deterioration of engine oil using multiple preselected oil properties

A method is provided for determining remaining oil life prior to an oil change in an internal combustion engine that uses a body of oil. The method includes transferring the body of oil to the engine and determining a volume of the transferred body of oil. The method also includes determining quality of the transferred body of oil and determining the remaining oil life based on the determined quality and volume of the body of oil. The method additionally includes activating an oil change indicator when the remaining oil life reaches a predetermined level. A system for determining a number of engine revolutions permitted on a volume of oil is also disclosed.

Automatic engine oil life determination with a factor for oil quality

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.

Method of monitoring oil in a vehicle

A method and system of determining a maximum oil change limit for an engine considering the engine operating environment and location is provided. An engine location indicator is generated in response to a trigger, using a locating device in communication with a controller. The locating device may include a global positioning system (GPS) receiver. The engine may be an internal combustion engine on a vehicle configured as one of a hybrid vehicle and an extended range electric vehicle. The trigger may be one of a calendar time, a key-on event, an oil change event, and a signal provided by the controller. The controller may generate the maximum oil change limit of the engine using one or more oil change indices, each defined by the engine location and/or time in location. The maximum oil change limit and/or an oil change limit alert may be provided as an output of the controller.

Method and system for oil life monitoring

A method of monitoring oil in a vehicle having an internal combustion engine is provided. The method includes measuring a sump temperature of the engine and measuring a power output of the engine. Oil consumption is calculated as a function of the measured sump temperature and the measured power output. Remaining oil life is calculated as a function of the calculated consumption. The method may include alerting a receiver of the calculated remaining oil life.

An engine system includes a concentration determination module and an additive dispensing module. The concentration determination module determines an amount of an additive in at least one of an oil system of an engine and a fuel system of the engine. The additive dispensing module dispenses a supplemental additive into at least one of the oil system and the fuel system when the amount of the additive is less than or equal to a predetermined amount.

Systems and methods for dispensing oil and fuel additives

A method is provided for determining remaining oil life prior to an oil change in an internal combustion engine that uses a body of oil. The method includes transferring the body of oil to the engine and determining a volume of the transferred body of oil. The method also includes determining a factor representative of a volume of oil from the transferred body of oil that is exposed to a combustion event in the engine. Additionally, the method includes determining the remaining oil life based on the determined volume of the body of oil and the determined factor representative of a volume of oil that is exposed to a combustion event. Moreover, the method includes activating an oil change indicator when the remaining oil life reaches a predetermined level. A system for determining a number of engine revolutions permitted on a volume of oil is also disclosed.

Automatic engine oil life determination adjusted for volume of oil exposed to a combustion event

A method is provided for determining remaining oil life prior to an oil change in an internal combustion engine that uses a body of oil. The method includes transferring the body of oil to the engine and determining a volume of the transferred body of oil. The method also includes determining a volume of oil consumed by the engine from the transferred body of oil and determining the remaining oil life based on the determined volume of the body of oil and the determined volume of oil consumed. The method additionally includes activating an oil change indicator when the remaining oil life reaches a predetermined level. A system for determining a number of engine revolutions permitted on a volume of oil is also disclosed.

Automatic engine oil life determination adjusted for consumed volume of oil

A method is provided for determining remaining oil life prior to an oil change in an internal combustion engine that uses a body of oil. The method includes transferring the body of oil to the engine and determining a volume of the transferred body of oil. The method also includes determining whether an oil squirter is present in the engine. Additionally, the method includes determining the remaining oil life based on the determined volume of the body of oil and whether an oil squirter is present in the engine. Moreover, the method includes activating an oil change indicator when the remaining oil life reaches a predetermined level. A system for determining a number of engine revolutions permitted on a volume of oil is also disclosed.

Automatic engine oil life determination adjusted for presence of oil squirters

A method is provided for determining remaining oil life prior to an oil change in an internal combustion engine that has a sump and uses a body of oil. The method includes transferring the body of oil to the engine and determining a volume of the transferred body of oil. The method also includes determining degradation of the determined volume of oil in response to oxidation and/or decomposition. The method additionally includes determining the remaining oil life based on the determined volume and degradation of the transferred body of oil. Furthermore, the method includes activating an oil change indicator when the remaining oil life reaches a predetermined level. A system for determining a number of engine revolutions permitted on a volume of oil is also disclosed.

Automatic engine oil life determination with a factor for degradation based on an initial volume of oil

An oil life monitoring system for a diesel engine system includes a viscosity loss module, a viscosity gain module, and a remaining oil life module. The viscosity loss module determines a percentage of viscosity loss of engine oil based on fuel accumulation in the engine oil. The viscosity gain module determines a percentage of viscosity gain of engine oil based on fuel evaporation and/or soot accumulation in the engine oil. The remaining oil life module communicates with the viscosity loss module and the viscosity gain module and determines a percentage of oil life remaining based on the percentage of viscosity loss and/or the percentage of viscosity gain.

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Howell, MI, United States of America

Matthew J Snider