Fault diagnosis and processing method and device of gear selection position sensor and storage medium

By diagnosing and addressing circuit connection faults in the AMT gear selector position sensor, the lack of diagnostic solutions in existing technologies has been resolved, resulting in higher shift success rates and improved vehicle safety.

CN122407779APending Publication Date: 2026-07-17FAW JIEFANG AUTOMOTIVE CO

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
FAW JIEFANG AUTOMOTIVE CO
Filing Date
2026-05-29
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

The existing technology lacks a diagnostic solution for loose connection faults in the AMT gear selection position sensor circuit, which leads to gear shifting failures and vehicle safety hazards.

Method used

A fault diagnosis and handling method for a gear selection position sensor is provided. By acquiring parameters such as the current and target gear, actuator position, oil temperature and speed difference, the voltage and position change rate of the sensor are determined, a loose connection fault is identified, and a fault handling process is used to ensure successful gear shifting.

Benefits of technology

Effectively identify and handle faulty gear selector position sensors, reduce gear slippage, improve shift success rate, and ensure normal vehicle operation under fault conditions.

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Abstract

本申请涉及变速器技术领域,公开了一种选挡位置传感器的故障诊断及处理方法、装置及存储介质。本申请至少提供了一套AMT选挡位置传感器的故障诊断流程;在换挡执行器执行换挡动作前记录当前选挡位置传感器的位置数值及供电电压数值,为后续诊断提供判断基准,保证了诊断的准确性;通过多次获取进挡过程中选挡位置传感器的位置数值及供电电压数值,可以将故障诊断覆盖整个进挡过程,解决了选挡位置传感器虚接故障的偶发性,提高了故障诊断的有效性。将选挡传感器位置变化率及供电电压变化率同时引入判断,使得故障诊断条件更加全面,故障诊断更加准确。本申请至少能够填补现有相关技术中缺乏对AMT选挡位置传感器电路虚接故障的诊断空白。
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