Abstract:
An oil change sensing system (10) for an internal combustion engine (30), having an oil pressure sensor (14) adapted to provide an oil pressure signal to an engine control module (12); an oil temperature sensor (16) adapted to provide an oil temperature signal to the engine control module; wherein the engine control module comprises an algorithm (70, 170) which determines the oil's viscosity by using the measured oil temperature and oil pressure and the determined oil viscosity and a fresh oil viscosity are used to determine whether the oil is in a preferred operating range.
Abstract:
An oil change sensing system (10) for an internal combustion engine (30), having an oil pressure sensor (14) adapted to provide an oil pressure signal to an engine control module (12); an oil temperature sensor (16) adapted to provide an oil temperature signal to the engine control module; wherein the engine control module comprises an algorithm (70, 170) which determines the oil's viscosity by using the measured oil temperature and oil pressure and the determined oil viscosity and a fresh oil viscosity are used to determine whether the oil is in a preferred operating range.
Abstract:
A method for detecting fuel leaking into an oil pan (16) containing oil which is used to lubricate an internal combustion engine (12) utilizes a plurality of sensors (18). The method includes the step of measuring a plurality of parameters of the oil using each of the plurality of sensors (18) to create measured values. A fuel leakage value is calculated incorporating each of the measured values. The method then determines when the fuel leakage value exceeds a predetermined value.