Lock-up control system for lock-up type automatic transmission

Details Lock-up control system for lock-up type automatic transmission Lock-up control system for lock-up type automatic transmission

1981-03-26

1984-05-22

Krizmanich, George H.

192 clutches and power-stop control

Vortex-flow drive and clutch

Including drive-lockup clutch

192 358, 192 82T, 192103R, 74866, 74732, B60K 4122

Patent

active

044496184

ABSTRACT:
A look-up control system for a lock-up type automatic transmission wherein a torque converter locks up in a pattern when the engine temperature is higher than a predetermined temperature value, but is prevented from locking up in the pattern when the engine temperature is lower than the predetermined temperature value. During engine operation when the engine temperature is lower than the predetermined temperature value, the torque converter is allowed to lock up in a second pattern or prevented from locking up.

REFERENCES:
patent: 3693478 (1972-09-01), Malloy
patent: 3805640 (1974-04-01), Schneider et al.
patent: 3857302 (1974-12-01), Morris
patent: 3949847 (1976-04-01), Hoehn
patent: 3985046 (1976-10-01), Morris et al.
patent: 4208929 (1980-06-01), Heino et al.
patent: 4262335 (1981-04-01), Ahlen
patent: 4349088 (1982-09-01), Ito et al.

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