Automatic transmission bypass clutch slip control using nonlinea

Details Automatic transmission bypass clutch slip control using nonlinea Automatic transmission bypass clutch slip control using nonlinea

1995-04-10

1996-06-18

Marmor, Charles A.

Interrelated power delivery controls, including engine control

Clutch control

477 62, 477169, 477181, B60K 4102

Patent

active

055272380

ABSTRACT:
In a powertrain including an engine controlled by engine manifold conditions, a hydrodynamic torque converter having a bypass clutch, multiple ratio automatic transmission connected to the drive wheels of the vehicle, a solenoid-operated hydraulic valve, supplying pressurized fluid to engage and release the bypass clutch, is controlled by operation of a feedforward control system. An engine math model produces a signal representing predicted torque output by the engine, which signal is applied as input to an inverse mathematical model of the solenoid-operated valve that supplies hydraulic fluid to the bypass clutch.

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patent: 5121802 (1992-06-01), Brown et al.
patent: 5123302 (1992-06-01), Brown et al.
patent: 5323320 (1994-06-01), Hathaway et al.

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