Method for controlling invalidation of clutch position sensor of AMT (advanced manufacturing technology) vehicle

Abstract

The invention provides a method for controlling invalidation of a clutch position sensor of an AMT (advanced manufacturing technology) vehicle, belongs to the technical field of vehicle safety, and solves the problem that the security of the vehicle and personnel are endangered after the clutch position sensor in the prior art becomes invalid. The method for controlling invalidation of the clutch position sensor of the AMT vehicle comprises the steps of receiving a clutch state signal transmitted by the clutch position sensor through a controller, judging whether the clutch position sensor is in an invalid state; and shielding a shifting signal when judging that the clutch position sensor is in the invalid state, and simultaneously, and judging whether the vehicle is in a retarding parking state by the controller according to a brake signal transmitted by a brake sensor, so as to judge whether the control signal is output to a clutch executing mechanism according to an engine rotating speed signal transmitted by an engine rotating speed sensor, so that the clutch is in a slip state. By adopting the control method, the situation that the vehicle continues to safely run after the clutch position sensor becomes invalid is ensured, and the method is high in security and simple and convenient to control.

Description

technical field [0001] The invention belongs to the technical field of automobile safety and relates to a control method for failure of an AMT vehicle clutch position sensor. Background technique [0002] At present, the clutch in the automobile transmission uses its position sensor to detect its clutch status, and the transmission control unit judges the action of the clutch according to the position signal of the clutch obtained by the clutch position sensor and issues a corresponding action command to shift the transmission. . [0003] However, when the sensor cannot provide the change signal of the clutch opening and closing, such as some sensors are always in the "on" state signal, then obviously, after the gear shift is completed and the clutch is released, the ECU cannot know that the load mutation causes the speed to drop and its trend , it cannot automatically increase the fuel injection speed-up compensation. Without this kind of auxiliary function, the driving l...

AI Technical Summary

Problems solved by technology

Therefore, it is conceivable that when this sensor fails, dangerous accidents are likely to occur, and in severe cases, it will pose a threat to the safety of people in the car.

[0004] In view of the above existing problems, the existing Chinese patent literature discloses a clutch position sensor connection device for an automatic transmission of an automobile [application number: CN200610098363.9]. Improve its detection accuracy, and solve the dangerous accidents caused by most clutch position sensors due to low detection accuracy and inappropriate selection of detection parameters

However, this device does not solve the problem that when the clutch position sensor fails, that is, the clutch position sensor cannot correctly detect the clutch position signal. After the vehicle has completed gear shifting, the ECU cannot know whether the clutch has been engaged or disengaged due to the failure of the clutch sensor. The correct shifting operation cannot be completed, and the ECU cannot control the fuel injection in time. In severe cases, the vehicle may be in danger of stalling at high speed, endangering the safety of the vehicle and personnel

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