Novel automatic transmission gear shift switch fault detection device and detection method thereof

Abstract

The invention relates to a novel automatic transmission gear shift switch fault detection device, including a gear shift lever driving device, a gear shift switch, a gear shift lever and a controller.The gear shift lever driving device is connected with a motor shaft core, the bottom of the gear shift lever driving device is provided with a gear shift lever meshing groove, the gear shift lever onthe gear shift switch meshes with the gear shift lever meshing groove, the gear shift switch is electrically connected with the controller through a wiring terminal plug. The design of the inventionadopts the gear shift lever driving device which is simple in structure and low in cost to replace a vehicle-mounted gear shift operating mechanism, a gear driving device is mounted on the motor shaftcore, the gear shift lever connected with a gear switch is driven according to a gear shift angle requirement to realize gear switching, at the same time, a PLC is utilized to collect gear switch status signals and perform detection and judgment, and the novel automatic transmission gear shift switch fault detection device has the characteristics of accurate and visual fault judgment, high detection efficiency, and good transplantability which facilitates synchronization with other test items.

Description

Technical field: [0001] The invention belongs to a fault detection device of an automatic transmission for vehicles, and in particular relates to a novel automatic transmission shift switch fault detection device and a detection method thereof. Background technique: [0002] The automatic transmission has 4 gears, P / R / N / D, and the gear switch is a mechanical structure with 7 contacts. Due to differences in manufacturing levels, in the actual assembly process, the gear switch with phase-to-phase short-circuit fault is assembled to the transmission, flows out of the manufacturing factory, and fails when it is loaded on the vehicle, which is likely to cause off-factory repairs and car accidents. At present, the domestic transmission shift switch short-circuit detection process mostly adopts offline manual detection with electrical instruments, which wastes manpower and time. Invention content: [0003] In order to overcome the above defects, the present invention provides a ...

AI Technical Summary

Problems solved by technology

Due to differences in manufacturing levels, in the actual assembly process, the gear switch with phase-to-phase short circuit faults will be assembled to the transmission, flow out of the manufacturing plant, and fail when the vehicle is loaded, which may easily cause repairs outside the factory and car accidents.

At present, the short-circuit detection process of the transmission shift switch in China mostly uses offline manual detection with electrical instruments, which wastes manpower and time

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