Shift torque management

Details Shift torque management Shift torque management

1995-06-30

1996-10-08

Wright, Dirk

Interrelated power delivery controls, including engine control

Transmission control

Including fluid drive

477 61, 477109, B60K 4110

Patent

active

055625673

ABSTRACT:
A motor vehicle having an automatic transmission coupled to an internal combustion engine includes computer based control of powertrain functions including engine torque management and ratio change controls. Shift pressure is scheduled off of the total torque to be transferred to the on-coming friction element, estimated as a function of transmission input torque and powertrain inertia torque constituents. Engine torque during a shift is reduced in a manner which accounts for the relative contributions of transmission input torque and inertia torque constituents of shift torque in order to arrive at a predetermined target shift torque regardless of the proportion mix of the torque constituents.

REFERENCES:
patent: 5103692 (1992-04-01), Shimanaka et al.
patent: 5133227 (1992-07-01), Iwatsuki
patent: 5292288 (1994-03-01), Kashiwabara et al.
patent: 5295415 (1994-03-01), Abe et al.
patent: 5305213 (1994-04-01), Boardman et al.
patent: 5403245 (1995-04-01), Watanabe et al.
patent: 5476425 (1995-12-01), Shiraishi et al.

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