Title:
WEAR DETERMINATION DEVICE
Document Type and Number:
Japanese Patent JP2022108585
Kind Code:
A
Abstract:
To determine the wear of a throttle gear mechanism.SOLUTION: A vehicle comprises a rotation detection device. The rotation detection device comprises a gear mechanism for transmitting torque to a rotating shaft of a throttle valve from a drive source, a motor for imparting the torque to the gear mechanism, and a rotation sensor for detecting an angular position of the rotating shaft. The gear device has a first spring for energizing the rotating shaft in one of peripheral directions of the rotating shaft, and a second spring for energizing the rotating shaft to a side opposite to the first spring. Also, the vehicle comprises a control device as a wear determination device. The angular position of the rotating shaft when the torque is not imparted to the rotating shaft from the motor is set as a neutral position, and a preset angular position range including the neutral position is set as a determination range. The control device performs count processing for counting the number of times at which the angular position detected by the rotation sensor is changed by straddling the determination range, and determination processing for determining that wear occurs at the gear mechanism when the number of times exceeds a preset threshold.SELECTED DRAWING: Figure 4
Inventors:
TSUTSUJI SHUNICHI
Application Number:
JP2021003666A
Publication Date:
July 26, 2022
Filing Date:
January 13, 2021
Export Citation:
Assignee:
TOYOTA MOTOR CORP
International Classes:
F02D9/02
Attorney, Agent or Firm:
Makoto Onda
Hironobu Onda
Hironobu Onda