Engine oil level monitoring systems and methods

摘要

An oil monitoring system includes a level module, a limit module and an remedial action module. The level module is configured to determine N oil levels of an engine of a vehicle, where N is an integer greater than 1. The limit module is configured to determine an oil level trend based on the N oil levels and estimate when a level of oil in the engine is to be outside the predetermined range based on the oil level trend. The remedial action module is configured to perform a remedial action based on the estimate of when the level of the oil is to be outside the predetermined range.

主权项

1. An oil monitoring system comprising:
a run time module configured to determine an amount of time an engine of a vehicle is off; a drain time module configured to determine an amount of time for oil in the engine to drain; a control module configured to determine whether the amount of time the engine is off is greater than the amount of time for the oil to drain; a level module configured to (i) determine N oil levels of the engine, where N is an integer greater than 1, and (ii) adjust, based on a tilt level of the vehicle or a temperature of the oil, one of the N oil levels if the amount of time the engine is off is greater than amount of time for the oil to drain; a limit module configured to (i) determine an oil level trend based on the N oil levels including the adjusted one of the N oil levels, and (ii) estimate when a level of the oil in the engine is to be outside a predetermined range based on the oil level trend, wherein the limit module is configured to, during respective stop-start cycles of the engine, determine a plurality of slopes of oil level versus cumulative engine run time curves based on pairs of the N oil levels and respective cumulative engine run times; and a remedial action module configured to (i) perform a remedial action based on when the level of the oil is estimated to be outside the predetermined range, and (ii) generate a warning message based collectively on the plurality of slopes.