Method of correcting shift position sensor of vehicle
AssigneeHyundai Motor Company
InventorChang-Hyun Kim
Life of this patent
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Abstract
A method of correcting shift position sensors of a vehicle, the sensors including an inhibitor switch and two or more analog sensors that detect angle displacement between a shift lever and a lever housing as a voltage change. The method includes determining a current condition of a transmission as a range P, when the inhibitor switch outputs signals corresponding to the range P; and inputting signals from the inhibitor switch and from the analog sensors, and determining the current condition of the transmission as a shift range that is indicated by a majority of the signals, when the inhibitor switch outputs signals corresponding to a range other than the range P.
Claims10
A method of correcting shift position sensors of a vehicle, the sensors comprising an inhibitor switch detecting a current condition of a transmission and two or more analog sensors that detect angle displacement between a shift lever and a lever housing as a voltage change, comprising the steps of:
- determining the current condition of the transmission as a range P, when the inhibitor switch outputs signals corresponding to the range P;
- and
- inputting signals from the inhibitor switch and from the analog sensors, and determining the current condition of the transmission as a shift range that is indicated by a majority of the signals, when the inhibitor switch outputs signals corresponding to a range other than the range P,
- wherein the two or more analog sensors are exactly two analog sensors, and
- wherein the step of determining the condition as a shift range that is indicated by the majority of the signals comprises:
- determining whether two of the signals agree with each other or not, if the two analog sensors are both normal;
- and
- determining the condition of the transmission as an N range, if two or more of the signals agree with each other and signals of the two analog sensors are both in P range, otherwise determining the condition as a shift range that is indicated by the agreed two or more signals;
- when the two analog sensors are both normal, if two or more of the signals are determined not to agree with each other,
- if a normal state before determining the current condition existed over a preset time, determining the condition of the transmission as a shift range that was determined in the normal state before determining the current condition, and
- if the normal state before determining the current condition did not exist over the preset time, determining the condition of the transmission as the N range.
A method of correcting shift position sensors of a vehicle, the sensors comprising an inhibitor switch detecting a current condition of a transmission and two or more analog sensors that detect angle displacement between a shift lever and a lever housing as a voltage change, comprising the steps of:
- determining the current condition of the transmission as a range P, when the inhibitor switch outputs signals corresponding to the range P;
- and
- inputting signals from the inhibitor switch and from the analog sensors, and determining the current condition of the transmission as a shift range that is indicated by a majority of the signals, when the inhibitor switch outputs signals corresponding to a range other than the range P,
- wherein the two or more analog sensors are exactly two analog sensors, and
- wherein the step of determining the condition as a shift range that is indicated by the majority of the signals comprises:
- determining whether two of the signals agree with each other or not, if the two analog sensors are both normal;
- and
- determining the condition of the transmission as an N range, if two or more of the signals agree with each other and signals of the two analog sensors are both in P range, otherwise determining the condition as a shift range that is indicated by the agreed two or more signals;
- wherein if only one of the two analog sensors is normal,
- when a signal of the inhibitor switch agrees with a signal of the normal analog sensor, the condition of the transmission is determined as a shift range of the agreed signals,
- when the signal of the inhibitor switch does not agree with the signal of the normal analog sensor,
- if a normal state before determining the current condition existed over a preset time, the condition of the transmission is determined as a shift range that was determined in the normal state before determining the current condition, and 20% or more of a driver's desired torque is subtracted before storage, and
- if the normal state before determining the current condition did not exist over a preset time, the condition of the transmission is determined as the N range.
Dependencies are inferred from the claim text.