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Control apparatus and control method for automatic transmission

A technology of automatic transmission and control equipment, which is applied in the directions of transmission control, mechanical equipment, elements with teeth, etc., and can solve the problems of non-disclosure and the like

Active Publication Date: 2014-06-04
TOYOTA JIDOSHA KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Measures to be taken when the target gear is changed during direct shift control without intermediate gears are therefore not disclosed

Method used

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  • Control apparatus and control method for automatic transmission
  • Control apparatus and control method for automatic transmission
  • Control apparatus and control method for automatic transmission

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Embodiment Construction

[0022] Embodiments of the present invention will be described below with reference to the drawings. In the following description, the same reference numerals have been assigned to the same components, where the names and functions of these components are also the same. Therefore, detailed descriptions of these components will not be repeated.

[0023] refer to figure 1 , a vehicle mounted with a control device according to an embodiment of the present invention will be described. The vehicle is a front-engine front-wheel drive (FF) type vehicle. Note that vehicles other than FF vehicles may be used.

[0024] The vehicle includes an engine 1000, an automatic transmission 2000, a planetary gear unit 3000 constituting a part of the automatic transmission 2000, a hydraulic circuit 4000 constituting a part of the automatic transmission 2000, a differential gear 5000, a drive shaft 6000, drive wheels 7000 and an electronic control unit ( ECU) 8000. The control device of the aut...

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Abstract

When a post-direct shift gear position does not match a target gear position during a direct shift but before engagement of an input clutch for the post-direct shift gear position begins, an ECU executes engagement control on a reaction brake for the new target gear position instead of executing engagement control on a reaction brake for the post-direct shift gear position, and executes engagement control on an input clutch for the new target gear position instead of executing engagement control on an input clutch for the post-direct shift gear position.

Description

technical field [0001] The present invention relates to a control device and a control method of an automatic transmission, and more particularly to direct shift control that engages two or more frictional engagement elements while disengaging them. Background technique [0002] Constituent components of an automatic transmission for a vehicle include a planetary gear composed of rotating elements such as a sun gear, a ring gear, and a carrier, and frictional engagement elements. In such an automatic transmission, a torque transmission path from an engine is switched according to a combination of engaged frictional engagement elements, thereby realizing a plurality of gear positions. In particular, an automatic transmission having a large number of gears (for example, a 6-speed automatic transmission) is provided with both a plurality of clutch elements serving as input elements and a plurality of braking elements serving as reaction force elements. [0003] In such an auto...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16H61/06
CPCF16H61/061F16H2306/24F16H2061/0455F16H2061/0451
Inventor 大岛康嗣
Owner TOYOTA JIDOSHA KK