Control device and method for automatic transmission

Details Control device and method for automatic transmission Control device and method for automatic transmission

2007-03-16

2009-12-22

Wright, Dirk (Department: 3655)

Interrelated power delivery controls, including engine control

Transmission control

Engine controlled by transmission

Reexamination Certificate

active

07635316

ABSTRACT:
A hydraulic pressure of each corresponding one of a plurality of friction elements of a gear shift mechanism of the automatic transmission is controlled to downshift the gear shift mechanism from a current gear stage to a next gear stage, at which an engine brake is operated, upon receiving a driver's demand for deceleration. An engine output of the engine is increased by increasing a throttle opening degree of the engine in at least two steps in an absence of a driver's operation on an accelerator of the vehicle at the time of the downshifting of the gear shift mechanism from the current gear stage to the next gear stage.

REFERENCES:
patent: 7503873 (2009-03-01), Nakajima et al.
patent: 2006/0046896 (2006-03-01), Nakajima et al.
patent: 03-229932 (1991-10-01), None
patent: 5-338469 (1993-12-01), None
patent: 08-118997 (1996-05-01), None
patent: 2006-069267 (2006-03-01), None
Japanese Office Action dated Sep. 14, 2009, issued in corresponding Japanese Application No. 2006-084997, with English translation.

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