Title:
CONTROL DEVICE OF AUTOMATIC TRANSMISSION
Document Type and Number:
Japanese Patent JP2018145994
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a control device of an automatic transmission which can suppress the stagnation of the progress of a gear change while suppressing a shock when the gear change passes through an intermediate gear change stage even if actual input shaft acceleration is varied with respect to target input shaft acceleration when performing a power-on downshift for making the gear change transit to a target gear change stage from a current gear change stage via the intermediate gear change stage.SOLUTION: When a power-on downshift for making a gear change transit to a target gear change stage from a current gear change stage via an intermediate gear change stage is performed, an ECU calculates a synchronization prediction time up to the arrival of an input shaft rotational speed at a synchronization rotational speed of the intermediate gear change stage, and when a synchronization prediction time reaches a prescribed value Th2 or shorter, increases a torque capacity of a release-side friction engagement element.SELECTED DRAWING: Figure 11
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Inventors:
OTA KEISUKE
TSUKAMOTO NORIHIRO
KONDO MASAMITSU
IYAMA YUJI
IMANISHI KAZUTAKA
FUKUDA DAIKI
TSUKAMOTO NORIHIRO
KONDO MASAMITSU
IYAMA YUJI
IMANISHI KAZUTAKA
FUKUDA DAIKI
Application Number:
JP2017039359A
Publication Date:
September 20, 2018
Filing Date:
March 02, 2017
Export Citation:
Assignee:
TOYOTA MOTOR CORP
AISIN AW CO
AISIN AW CO
International Classes:
F16H61/04
Domestic Patent References:
| JP2015140881A | 2015-08-03 | |||
| JP2000227158A | 2000-08-15 |
Attorney, Agent or Firm:
Patent Business Corporation Ark Patent Office