Patent ID: 8249785
Filing Date: 2012-08-21
Classification: F16H,Y10T

Abstract:
1. A control apparatus for a vehicular automatic transmission which has a plurality of coupling elements which are selectively released and engaged to perform shifting actions, said control apparatus comprising: a shift control portion configured to control at least one specially controlled coupling element which is included in said plurality of coupling elements provided to perform shift-up actions of said vehicular automatic transmission and which is placed in a fully released state prior and subsequent to a first shift-up action performed according to a presently generated shifting command, said shift control portion controlling each of said at least one specially controlled coupling element so as to enable said each specially controlled coupling element to have a torque capacity by temporarily placing said at least one specially controlled coupling element in a slipping state during the first shift-up action between two gear positions adjoining each other performed according to the presently generated shifting command, wherein each of said at least one specially controlled coupling element is a higher-gear-position coupling element which is engaged to perform a second shift-up action of the vehicular automatic transmission to a higher gear position than a gear position established after said first shift-up action, and said shift control portion enables said at least one specially controlled coupling element to have the torque capacity in synchronization with a moment of initiation of an inertia phase of said vehicular automatic transmission, the moment of initiation of the inertia phase being determined based on a rotating speed of an input shaft of the vehicular automatic transmission.