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Automatic transmission controls

A technology of automatic transmission and automatic shifting, which is applied in transmission control, components with teeth, belts/chains/gears, etc. It can solve the problems of low drivability and inability to realize automatic shifting, and achieve the effect of drivability

Active Publication Date: 2015-11-25
JATCO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At this time, the downshift command and the upshift command are generated at the same time, and the commands cancel each other out. Therefore, automatic shifting cannot be realized.
Here, the actual situation is that the manual shifting operation in the opposite direction to the automatic shifting is often the wrong operation of the driver, and since the automatic shifting cannot be performed due to such a mistaken operation, there is a problem such as poor drivability as a result.

Method used

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  • Automatic transmission controls
  • Automatic transmission controls
  • Automatic transmission controls

Examples

Experimental program
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Embodiment Construction

[0013] figure 1 It is a system diagram showing the outline of the control device of the automatic transmission of the embodiment. Such as figure 1 As shown, the engine 10 and the automatic transmission 11 are controlled by the electronic control device 12 for the engine and the electronic control device 15 for the transmission. The engine electronic control unit 12 controls the engine 10 based on the throttle opening input from the throttle opening sensor 13 and the vehicle speed input from the vehicle speed sensor 14 . Specifically, control of a fuel injection valve and an ignition device (not shown) is performed in accordance with a traveling state.

[0014] The electronic control unit 15 for speed change has the following inputs: the throttle opening input from the throttle opening sensor 13, the vehicle speed input from the vehicle speed sensor 14, the position of the gear lever 17 detected by the operating position sensor 16, the position of the shift lever 17 from the ...

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Abstract

An automatic transmission has an automatic shift mode and a manual shift mode. When an opposite manual operation is performed, during an automatic shift based on a shift map in the automatic shift mode, in an opposite direction opposite to the automatic shift or when the opposite manual operation is performed, during a forced shift performed regardless of the manual operation in the manual shift mode, in the opposite direction opposite to the forced shift, a control apparatus forbids a shift based on a first manual operation and permits a shift based on a second or subsequent manual operation in the opposite direction opposite to the automatic shift or the forced shift.

Description

technical field [0001] The present invention relates to a control device for an automatic transmission capable of manually operating a shift command. Background technique [0002] Many automatic transmissions for automobiles have a manual transmission mode in addition to the automatic transmission mode. Patent Document 1 discloses a technique for automatically shifting such an automatic transmission in a manual shift mode. [0003] Here, as described in Patent Document 1, the case of automatic shifting in a manual shifting mode has been studied. For example, it is assumed that an upshift operation is performed by manual shifting when a so-called sudden downshift command for downshifting is generated when the driver suddenly depresses the accelerator pedal. At this time, the downshift command and the upshift command are generated at the same time, and the commands cancel each other out, so automatic shifting cannot be realized. Here, the actual situation is that the manual...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16H61/16
CPCF16H61/68F16H59/0204F16H61/16F16H2059/006F16H2059/0239F16H2061/0244Y10T74/1926F16H61/04
Inventor 松尾克宏石田景三
Owner JATCO LTD