Method for avoiding measurement error of air flow sensor
AssigneesHyundai Motor Company, Kia Motors Corporation
InventorMin-Kyu WON
Life of this patent
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Abstract
A method for avoiding a measurement error of an air flow sensor for a vehicle includes an engine control unit (ECU) which predicts, in advance, occurrence of the contamination by foreign materials included in the air or condensation of moisture on a sensor measurement plate of the air flow sensor, and performs an operation for preventing the contamination by foreign materials or the condensation of moisture when the occurrence is predicted, to avoid the measurement error of the air flow sensor due to the contamination by foreign materials or the condensation of moisture on the sensor measurement plate.
Claims20
A method for avoiding a measurement error of an air flow sensor, wherein an engine control unit (ECU) of a vehicle predicts, in advance, occurrence of contamination by foreign materials included in air or condensation of moisture on a sensor measurement plate of the air flow sensor, and performs an operation for preventing the contamination by foreign materials or the condensation of moisture when the occurrence is predicted, to avoid the measurement error of the air flow sensor due to the contamination by foreign materials or the condensation of moisture on the sensor measurement plate.
A method for avoiding a measurement error of an air flow sensor, the method performed by an electronic control unit (ECU) which is configured to perform:
- an air flow sensor flow rate measurement step of measuring an intake air flow rate by the air flow sensor;
- a foreign material contamination or moisture condensation occurrence prediction step of predicting occurrence of contamination by foreign materials or condensation of moisture on a sensor measurement plate of the air flow sensor;
- a foreign material contamination or moisture condensation preventing operation performance step of preventing the occurrence of the contamination by foreign materials or condensation of moisture on the sensor measurement plate when the occurrence of the contamination by foreign materials or condensation of moisture on the sensor measurement plate is predicted in the foreign material contamination or moisture condensation occurrence prediction step;
- and
- a foreign material contamination or moisture condensation preventing operation termination step of returning to the air flow sensor flow rate measurement step again after performing the foreign material contamination or moisture condensation preventing operation performance step for a predetermined time.
Dependencies are inferred from the claim text.