Torsional isolation of a convertless automatic transmission...

Details Torsional isolation of a convertless automatic transmission... Torsional isolation of a convertless automatic transmission...

2006-01-31

2006-01-31

Lewis, Tisha (Department: 3681)

Interrelated power delivery controls, including engine control

Clutch control

Condition responsive control

C477S176000, C701S067000

Reexamination Certificate

active

06991585

ABSTRACT:
An automotive vehicle driveline includes an internal combustion engine for transmitting input torque to a hydraulically-actuated input clutch, and having a throttle controlled by a displaceable accelerator pedal. A transmission produces multiple gear ratios between the clutch and an output. A method for controlling operation of the clutch includes determining a magnitude of clutch pressure that would produce a torque capacity of the input clutch equal to the current magnitude of input torque; if no transient condition occurs, pressurizing the clutch at a magnitude of pressure that produces a predetermined slip of the input clutch at the current magnitude of input torque; and if a transient condition occurs, holding and/or reducing the determined input clutch pressure such that slip occurs at the input clutch.

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