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Method and device for controlling failure of input shaft speed sensor of AMT

A technology of input shaft speed and control device, which is applied in the direction of transmission control, components with teeth, belt/chain/gear, etc., and can solve the problems affecting driving safety, shifting impact, and affecting the comfort of passengers in the car, etc. Problems, to achieve the effect of ensuring ride comfort and protecting safety

Active Publication Date: 2013-01-02
ZHEJIANG GEELY AUTOMOBILE RES INST CO LTD +1
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  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

The failure of the input shaft speed sensor is not dealt with in the prior art, so when the input shaft speed sensor fails, the obtained input shaft speed value is a random value, and the error with the actual input shaft speed value may be very large , so it is easy to cause the clutch slip error calculated based on the wrong input shaft speed value to be very large, which in turn leads to a very unreasonable clutch engagement speed
If the clutch is engaged too fast, it will greatly increase the dynamic load of the transmission system, causing shifting shocks and large fluctuations in engine speed. If the consequences are light, it will affect the comfort of the passengers in the car, and if it is serious, it will affect driving safety.

Method used

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  • Method and device for controlling failure of input shaft speed sensor of AMT
  • Method and device for controlling failure of input shaft speed sensor of AMT

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Embodiment Construction

[0026] The control method for the failure of the input shaft speed sensor of the AMT transmission provided by the present invention includes: judging whether the input shaft speed sensor fails; if no failure occurs, the input shaft speed value is obtained according to the input shaft speed sensor monitoring, otherwise the input shaft speed analog value is calculated The analog value is used as the input shaft speed value; the clutch slip is obtained through calculation according to the input shaft speed value, and the clutch engagement speed is obtained according to the clutch slip.

[0027] As a preferred embodiment, such as figure 1 As shown, the control method for the failure of the input shaft speed sensor of the AMT transmission specifically includes the following steps:

[0028] Step 101: judging whether the clutch is in the engagement process; if yes, proceed to step 102, if not, proceed to step 106;

[0029] Step 102: judging whether the input shaft rotational speed s...

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Abstract

The invention provides a method and a device for controlling failure of an input shaft speed sensor of an auto mechanical transmission (AMT). When the input shaft speed sensor is in failure, an analogue value very approximate to an actual input shaft speed is calculated, and then the slip of a clutch is calculated according to the analogue value so as to obtain a rational engagement speed for the clutch; therefore, the clutch can work under a rational working condition, and a potential safety hazard is avoided for a vehicle.

Description

technical field [0001] The invention relates to the field of automobiles, in particular to a method and device for controlling failure of an input shaft rotational speed sensor of an AMT transmission. Background technique [0002] The AMT transmission (Auto Mechanical Transmission, automatic mechanical transmission) is based on the ordinary manual transmission, changing the shift control part of the mechanical transmission, and realizing the shift by adding an automatic control system controlled by the TCU under the condition that the overall transmission structure remains unchanged. automation. The use of AMT transmission allows the driver to freely choose between manual shifting and automatic shifting, which improves driving pleasure. Since AMT can be modified on the basis of the existing mechanical gearbox, the production inheritance is good, and it also has the advantages of convenient operation, low cost, and good economy, so it is more and more widely used. [0003] ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H61/00F16H61/12F16H61/02
Inventor 高阳陈勇罗大国刘文忠赵福全
Owner ZHEJIANG GEELY AUTOMOBILE RES INST CO LTD
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