Control device of automatic transmission

Details Control device of automatic transmission Control device of automatic transmission

2006-09-05

2006-09-05

Camby, Richard M. (Department: 3661)

Data processing: vehicles, navigation, and relative location

Vehicle control, guidance, operation, or indication

Transmission control

C701S055000, C701S056000

Reexamination Certificate

active

07103462

ABSTRACT:
When a request to switch to a shift to a new third shift step is made during performing a shift from a first shift step to a second shift step, a method of performing the shift to the third shift step is changed according to an engagement pattern of respective friction engaging components in a steady state of the third shift step. When there are the friction engaging components that are continuously being engaged or disengaged at the time of a shift from the second shift step to the third shift step, the friction engaging components are continuously engaged or disengaged whereas the control of engaging or disengaging the other friction engaging components that are to be changed in the state of engagement or disengagement is started so as to make the other friction engaging components respond to the engagement pattern of the third shift step.

REFERENCES:
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patent: 6950736 (2005-09-01), Cho
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patent: 6961647 (2005-11-01), Matsumura et al.
patent: 6996861 (2006-02-01), Clark, Jr.
patent: 6997837 (2006-02-01), Oshima et al.
patent: 7001299 (2006-02-01), Takagi et al.
patent: 3291970 (2002-03-01), None

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