US 2021/0340892 A1 · APPARATUS AND METHOD FOR DETECTING ENGINE OIL REPLACEMENT

Abstract

A method for detecting engine oil replacement may include determining a measured oil temperature change amount based on an engine oil temperature measurement value during an engine turned-off period determined based on turning-off/on signals, determining a modeled oil temperature change amount based on a temperature change model estimating the engine oil temperature without an engine oil replacement event according to the engine turned-off period, temperature information related to the engine at an engine turned-off time point, and temperature information related to the engine at a turned-on time point, comparing a difference value between the measured oil temperature change amount and the modeled oil temperature change amount with a reference temperature, determining whether the engine oil replacement event has occurred during the engine turned-off period based on a comparison result, and resetting an engine oil replacement timing and displaying the reset engine oil replacement timing in a user interface.

Claims17

Dependent claims

A method of detecting engine oil replacement, the method comprising:

determining, by a controller, a measured oil temperature change amount according to an engine oil temperature measurement value during an engine turned-off period determined according to turning-off/on signals of an engine;
determining, by the controller, a modeled oil temperature change amount according to a temperature change model that estimates an engine oil temperature without an engine oil replacement event according to the engine turned-off period, temperature information related to the engine at an engine turned-off time point, and temperature information related to the engine at a turned-on time point of the engine;
comparing, by the controller, a difference value between the measured oil temperature change amount and the modeled oil temperature change amount with a reference temperature;
determining, by the controller, whether the engine oil replacement event has occurred during the engine turned-off period according to a result of the comparing;
and
resetting, by the controller, an engine oil replacement timing and displaying the reset engine oil replacement timing in a user interface.

3 more elements

An apparatus of detecting engine oil replacement, the apparatus comprising:

a controller configured for determining an engine turned-off period and determining whether an engine oil replacement event has occurred during the engine turned-off period;
and
a temperature change model that estimates an engine oil temperature without the engine oil replacement event according to the engine turned-off period, temperature information related to an engine at an engine turned-off time point, and temperature information related to the engine at a turned-on time point of the engine,
wherein the controller is configured to determine whether the engine oil replacement event has occurred by comparing a reference temperature with a difference value between a measured oil temperature change amount determined according to an engine oil temperature measurement value and a modeled oil temperature change amount determined according to the temperature change model.

1 more element

Dependencies are inferred from the claim text.

Apparatus and method for detecting engine oil replacement

Life of this patent

Apparatus and method for detecting engine oil replacement

Life of this patent

Abstract

Claims17