Torque converter and clutch control with piezoelectric devices

Details Torque converter and clutch control with piezoelectric devices Torque converter and clutch control with piezoelectric devices

1989-05-08

1990-06-05

Braun, Leslie A.

192 clutches and power-stop control

Vortex-flow drive and clutch

Including drive-lockup clutch

192 33, 192 56F, 192 83, 192 84R, 192101, F16D 4702, F16D 4300

Patent

active

049306081

ABSTRACT:
A torque converter and clutch assembly has a piezoelectric control portion. One piezoelectric device is subjected to the transient torques transmitted to the clutch, and generates a signal in response to the transient torque. Another piezoelectric device is electrically connected with the first piezoelectric device and is expandable in response to the electric signal to initiate clutch disengagement and provide clutch slip to thereby reduce the transmission of transient torque spikes.

REFERENCES:
patent: 3734251 (1973-05-01), Annis et al.
patent: 4167993 (1979-09-01), Vukovich et al.
patent: 4334602 (1982-06-01), Armour et al.
patent: 4360090 (1982-11-01), Wonn
patent: 4636679 (1987-01-01), Glett et al.

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