Driveaway lockup strategy for an infinitely variable tranmission

Details Driveaway lockup strategy for an infinitely variable tranmission Driveaway lockup strategy for an infinitely variable tranmission

1993-12-22

1995-05-23

Marmor, Charles A.

Interrelated power delivery controls, including engine control

Transmission control

Continuously variable friction transmission

477 49, B60K 4114, F16D 43286

Patent

active

054176212

ABSTRACT:
A control system for a friction bypass clutch for a torque converter that forms a part of an infinitely variable transmission in a vehicle driveline having an internal combustion engine including closed loop electronic controllers for coordinated control of the speed ratio of the transmission and the rate of engagement of the torque converter bypass clutch so that the resulting turbine speed will cause the vehicle engine to operate at an ideal speed and throttle setting that will achieve maximum brake specific fuel consumption wherein the time required for reaching the ideal speed is longer than the time required to complete engagement of the bypass clutch, thus effecting smooth clutch engagement with reduced energy absorption.

REFERENCES:
patent: 4583423 (1986-04-01), Hahne
patent: 4665773 (1987-05-01), Hiramatsu et al.
patent: 4823925 (1989-04-01), Okhumo et al.
patent: 4876920 (1989-10-01), Eichenberger
patent: 5160003 (1992-11-01), Suzuki
patent: 5170868 (1992-12-01), Yamashita et al.

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