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Electromagnetic valve fault handling method based on automatic transmission control software

A fault handling method, technology of automatic transmission, applied in the direction of transmission control, elements with teeth, belt/chain/gear, etc., to the effect of avoiding the danger of unavailability

Active Publication Date: 2020-03-27
SHENGRUI TRANSMISSION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Due to the change of the mechanical design structure, this strategy is not applicable to the electronic shift mechanism, and the solenoid valve fault handling measures of the electronic shift control software are basically in a blank state

Method used

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  • Electromagnetic valve fault handling method based on automatic transmission control software
  • Electromagnetic valve fault handling method based on automatic transmission control software

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Embodiment Construction

[0025] In order to have a clearer understanding of the technical features, objectives and effects of the present invention, the specific embodiments of the present invention will now be described with reference to the accompanying drawings. In this example, the 8at gear is taken as an example for description. Those skilled in the art should understand that, The following does not constitute a limitation to the protection scope of the present invention.

[0026] Examples such as figure 1 , figure 2 As shown, a solenoid valve fault processing method based on automatic transmission control software includes the steps of judging solenoid valve faults: TCU monitors the gearbox operating conditions at all times, and when the gearbox has solenoid valve faults, TCU also reports the solenoid valve fault code; When the solenoid valve power supply terminal fails, the solenoid valve under the power supply terminal also fails. In short, when the solenoid valve fails or the solenoid valve pow...

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Abstract

The invention discloses an electromagnetic valve fault handling method based on automatic transmission control software. The method includes the step of judging the fault of an electromagnetic valve,the step of judging the fault B1 and the fault Cx, the step of judging the fault gear _B1 and the fault gear _Cx, the step of judging the fault gear, the step of judging the available gear and the step of judging the gear priority. The operating state of a clutch is judged by monitoring the state of the electromagnetic valve of the clutch, the unavailable gear caused by the fault of the clutch isset as the fault gear standardization amount, then the available gear during the fault of the electromagnetic valve is calculated, and finally in combination with the gear priority, the optimal driving gear is calculated. Compared with fault handling through fixed gears, the method of fault handling for the state of the electromagnetic valve can avoid the risk that combination gears of a fault clutch are not available.

Description

Technical field [0001] The invention belongs to the technical field of automatic transmission control, and specifically relates to a solenoid valve fault processing method based on automatic transmission control software. Background technique [0002] The shift process of the automatic transmission is determined by the shift between different gears. The different gears are composed of a combination of clutches, which are controlled by solenoid valves. In the development process of AT automatic transmission control software, when the solenoid valve fails, it affects the coupling of the clutch, and then affects whether its forward gear, static gear and reverse gear are available. [0003] When the vehicle is running, the transmission needs to be used as a transmission device to transmit the power of the engine to the wheels, and the transmission needs to select a suitable gear according to the current working conditions to match the engine. There are 5 shift elements in the AT trans...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H61/12F16H61/00
CPCF16H61/0009F16H61/12F16H2061/128
Inventor 邱兵杨涛
Owner SHENGRUI TRANSMISSION
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