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A gear fault diagnosis and processing method

A processing method and fault diagnosis technology, applied to components with teeth, transmission control, belt/chain/gear, etc., can solve problems affecting drivability, comfort and safety, and achieve the effect of ensuring safety

Active Publication Date: 2020-03-17
南京奥吉智能汽车技术研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the shifting fails due to mechanical reasons or sensor failure during driving, the fault judgment method and treatment method will directly affect the drivability, comfort and safety

Method used

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  • A gear fault diagnosis and processing method
  • A gear fault diagnosis and processing method
  • A gear fault diagnosis and processing method

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Embodiment Construction

[0035] In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following will describe in detail with reference to the drawings and specific embodiments.

[0036] In the embodiment of the present invention, the gear fault diagnosis and processing method provided is used to judge the gear fault of the dual clutch automatic transmission. The transmission is composed of 7 forward gears and 1 reverse gear. In addition, it also includes 2 An input shaft speed sensor, an output shaft speed sensor, and 4 shift fork position sensors, but not limited thereto.

[0037] figure 1 It is a schematic flowchart of the gear fault diagnosis and processing method provided by the embodiment of the present invention; figure 2 It is a schematic flow chart of the gear fault diagnosis and processing method provided by the embodiment of the present invention; image 3 The flow chart of the fault handling of the shift fork positi...

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Abstract

The invention provides a gear fault diagnosing and processing method. The method comprises the steps that when preset judgement conditions are met, estimated meshing gear judgement of shafts of odd numbers and shafts of even numbers of a speed changer is conducted; the state of a sensor at a shifting fork position is monitored, when it is detected that the sensor at the shifting fork position doesnot work, a gear meshing condition under the current working condition is judged by adopting an estimated meshing gear, and fault processing is conducted; the gear engaging and shifting motions of the speed changer are judged, when gear engaging fault exists in the speed changer, the estimated meshing gear is adopted for judging whether or not a synchronizer is damaged, and fault processing is conducted. According to the method, in the gear fault processing process, the safety and reliability of vehicle driving are ensured.

Description

technical field [0001] The invention belongs to the field of dual-clutch automatic transmission control, and relates to a gear fault diagnosis and processing method of the automatic transmission. Background technique [0002] The transmission is an important part of the car transmission system. It directly affects the important performances of modern cars such as the car's power, fuel economy, comfort, handling, and reliability. It is one of the important factors that determine the quality of the car. The wet dual-clutch automatic transmission control system is based on external input signals such as the driver's accelerator, brake and vehicle speed, and performs comprehensive judgment to realize the automatic shift process. If the shifting fails due to mechanical reasons or sensor failure during driving, the fault judgment method and processing method will directly affect the drivability, comfort and safety. [0003] Therefore, transmission fault diagnosis and treatment is...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16H61/12
CPCF16H61/12F16H2061/1272
Inventor 张广辉
Owner 南京奥吉智能汽车技术研究院有限公司