Method for controlling an automatic vehicle transmission in...

Details Method for controlling an automatic vehicle transmission in... Method for controlling an automatic vehicle transmission in...

2006-02-01

2011-11-01

Estremsky, Sherry (Department: 3655)

Machine element or mechanism

Gearing

Interchangeably locked

C475S121000

Reexamination Certificate

active

08047091

ABSTRACT:
A method of controlling an automatic transmission of a motor vehicle having clutches controlled by an electronic control unit. A transmission rotational speed in an initial transmission stage is determined. If a first transmission shifting rotational speed is reached, the transmission is shifted from the initial transmission stage to a target transmission stage. A target transmission rotational speed of the target transmission stage is then ascertained. A difference is next ascertained between the target transmission rotational speed and a second shifting transmission rotational speed. An initial counter value, of a counter, is determined, which depends on the transmission rotational speed difference. The counter is next caused to carry out counting, from the initial counter value, as time progresses. If and when the counter value reaches zero, the transmission is shifted from the target transmission stage toward the initial transmission stage.

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patent: 4329908 (1995-03-01), None
patent: 0798496 (1997-10-01), None
patent: 2012892 (1979-08-01), None

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