Lock-up apparatus in torque converter

Details Lock-up apparatus in torque converter Lock-up apparatus in torque converter

1991-07-18

1992-12-29

Braun, Leslie A.

192 clutches and power-stop control

Vortex-flow drive and clutch

Including drive-lockup clutch

192 33, F16D 3300

Patent

active

051744236

ABSTRACT:
A lock-up apparatus in a torque converter includes a first oil chamber (25) and a second oil chamber (26) delimited by a lock-up piston (21), a first oil line system (A) communicating with the first oil chamber (25), and a second oil line system (B) communicating with the second oil chamber (26). An orifice (36) and an oil line (37) for directly communicating the first oil line system (A) and the second oil chamber (26) are provided in an output shaft (20) and a turbine hub (19), respectively. Accordingly, the first oil chamber (25) and the second oil chamber (26) are not directly communicated. As a result, not only is shock produced at release from the locked up state mitigated by the orifice (36) and oil line (37), but it is also possible to reliably prevent a decline in transmission torque capacity in the lock-up ON state.

REFERENCES:
patent: 3497043 (1970-02-01), Leonard
patent: 3730315 (1973-05-01), Annis et al.
patent: 3734251 (1973-05-01), Annis et al.
patent: 4049093 (1977-09-01), Vukovich et al.
patent: 4271939 (1981-06-01), Iwanaga et al.
patent: 4301900 (1981-11-01), Sunohara et al.
patent: 4377226 (1983-03-01), Chevalier et al.
patent: 4406355 (1983-09-01), Bionaz
patent: 4735297 (1988-04-01), Koshimo
patent: 4785923 (1988-11-01), Ushijima

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