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Automatic transmission gear shift fault control method and system

A technology of automatic transmission and fault control, applied in transmission control, components with teeth, belts/chains/gears, etc., can solve problems such as inaccurate fault diagnosis of shift handle position, fault false alarm, dangerous driving of vehicles, etc.

Active Publication Date: 2017-03-15
ANHUI JIANGHUAI AUTOMOBILE GRP CORP LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention provides a method and system for controlling shifting faults of an automatic transmission, which solves the problems of inaccurate fault diagnosis of the existing shift handle position, which easily causes dangerous driving of the vehicle and false alarms of faults, and improves the safety and practicability of the vehicle

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  • Automatic transmission gear shift fault control method and system

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Embodiment Construction

[0028] In order to enable those skilled in the art to better understand the solutions of the embodiments of the present invention, the embodiments of the present invention will be further described in detail below in conjunction with the drawings and implementations.

[0029] In view of the fact that the current shift handle may malfunction during use, the gearbox controller sometimes cannot accurately determine whether there is a malfunction, and when a malfunction occurs, the gearbox controller cannot accurately determine the driver's driving intention, and the vehicle will enter If the failure mode is not handled properly, power interruption may occur during high-speed driving, causing great safety hazards to drivers and passengers. The present invention provides a shift fault control method and system of an automatic transmission, which determines the position of the shift handle by collecting the position forward signal value and the position reverse signal value of the sh...

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Abstract

The invention relates to an automatic transmission gear shift fault control method and system. The method comprises the steps that the position of a gear shift handle is detected, and the position positive signal value F and the position reverse signal value R of the gear shift handle and the retention time T of the gear shift handle at the position are obtained; when the sum of the position positive signal value F and the position reverse signal value R is not equal to the first threshold value, whether the retention time T is larger than the set time threshold value or not is judged, and if yes, an automobile enters the fault running mode; the speed of the automobile in the fault running mode is obtained, if the speed of the automobile is larger than the set speed threshold value, the automobile limps with the gear before the fault, and otherwise, an automobile clutch is disengaged, and the automobile slides with the neutral gear. The problems that the position fault diagnosis of an existing gear shift handle is inaccurate and dangerous driving and fault false alarm of the automobile are caused easily are solved, and safety and practicability of the automobile are improved.

Description

technical field [0001] The invention relates to the technical field of automatic transmission control, in particular to a method and system for controlling a shift fault of an automatic transmission. Background technique [0002] As one of the core components of the vehicle transmission system, the transmission has a significant impact on the power, fuel economy and ride comfort of the vehicle. The gearbox controller controls various actuators in the gearbox based on the detection of the status information of the gearbox, which has an important impact on the safety of drivers and vehicles. As a signal received by the gearbox controller from the outside, the position signal of the shift handle is an important signal for the gearbox controller to judge the driver's driving intention. However, when the shift handle is used for a long time and its life reaches a certain limit, some failures will occur. At this time, the shift lever position signal received by the gearbox contro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H61/12
CPCF16H61/12F16H2061/1208F16H2061/1216F16H2061/1224F16H2061/1232
Inventor 周兵兵左波涛涂安全罗贤虎张金超
Owner ANHUI JIANGHUAI AUTOMOBILE GRP CORP LTD
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