Control apparatus for automatic transmission and implementing method of its failure protection function

An automatic transmission and control device technology, applied in engine control, transmission control, electrical control, etc., to prevent torque vibration, improve driving performance, and improve driving performance.

Inactive Publication Date: 2006-11-01
JATCO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, for example, it cannot cope with the case where the range mismatch state continues due to failure of the suppression switch, etc.

Method used

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  • Control apparatus for automatic transmission and implementing method of its failure protection function
  • Control apparatus for automatic transmission and implementing method of its failure protection function
  • Control apparatus for automatic transmission and implementing method of its failure protection function

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0035] Embodiments of the present invention will be described below with reference to the drawings.

[0036] Figure 1 to Figure 5 shows a control device for an automatic transmission as an embodiment of the present invention, figure 1 It is an overall structural schematic diagram showing the overall structure of this device. figure 2 It is a graph showing the set amount of engine torque in this device, (a) a graph showing the relationship between the set engine torque and driving speed, (b) showing the relationship between the set engine torque and time Relationship graph. image 3 It is a control flowchart for explaining the control content of this device. Figure 4 It is a graph for explaining the control action in a vehicle equipped with this device, (a) is a graph showing fluctuations in the failure judgment of the suppression switch, (b) is a graph showing the turbine speed related to the line pressure control of the automatic transmission. (c) is a graph showing ch...

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PUM

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Abstract

The present invention relates to a control device for an automatic transmission and a method for implementing a failsafe function of the automatic transmission, which can properly protect the automatic transmission and ensure a certain degree of running performance even if the state of the shifting operation performed by the operator cannot be grasped. The control device has: an operating lever (1) for setting the shift range of the automatic transmission, a suppression switch (2) for outputting a range signal corresponding to the shift range as a control signal, and a vehicle speed sensor ( 3) At the same time, it also has an engine control device (10), which has a fault judging device (11) for judging the fault state of the suppression switch (2) based on the control signal, and suppresses the output of the engine according to the driving speed of the vehicle during the fault state. Torque engine torque suppression device (12).

Description

technical field [0001] The invention relates to a control device of an automatic transmission capable of controlling the running state of a vehicle and a method for implementing the fail-safe function of the automatic transmission. Background technique [0002] An automatic transmission mounted on a vehicle is provided with an inhibit switch as a sensor for detecting the operating position of a selector lever (operating lever) for setting a shift position. The inhibit switch detects the position of the selector lever (shift range, gear position) as an electric signal, and determines the shift range of the automatic transmission based on the detected electric signal (INH signal), and at the same time performs a Various transmission controls for shift ranges. [0003] In a typical automatic transmission, the gear selection lever is set as a lever that can rotate freely around the fulcrum, and the position of the lever is moved to the specified gear by the rotation operation, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60W10/04B60W10/06B60W10/10B60W10/101B60W10/107B60W10/11F02D29/00F16H59/10F16H59/14F16H61/12F16H61/21F16H61/66F16H61/662F16H63/50
CPCB60W10/06B60W10/107B60W50/038F02D41/0225F16H61/12F16H61/66F16H63/50F16H2061/124F16H2061/1284
Inventor 田中宽康井上拓市郎大堀刚
Owner JATCO LTD
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