192 clutches and power-stop control – Vortex-flow drive and clutch – With brake
Patent
1987-04-09
1989-04-11
Bonck, Rodney H
192 clutches and power-stop control
Vortex-flow drive and clutch
With brake
192 329, 74857, B60K 4128, F16H 4502
Patent
active
048197777
ABSTRACT:
Determination of the engagement of a lockup clutch is performed in a system for integrally controlling an automatic transmission and an engine, wherein gear stages can be automatically switched in accordance with a preset map, the lockup clutch of a torque converter is engageable during at least one gear stage, and engine torque is changed during shifting to maintain satisfactory shift characteristics. The engagement is determined not only in response to an engaging signal of the lockup clutch from the computer, but also in consideration of a time lag after the engaging signal is turned ON. Alternatively, engagement is determined by detecting the rotary speeds of the engine and the turbine of the torque converter when the engaging signal is ON. As a result, mistaken determinations of engagement of the lockup clutch are avoided.
REFERENCES:
patent: 4373619 (1983-02-01), Schritt et al.
patent: 4386687 (1983-06-01), Chevalier et al.
patent: 4403527 (1983-09-01), Mohl et al.
patent: 4422353 (1983-12-01), Suga et al.
patent: 4428467 (1984-01-01), Hiramatsu et al.
Fukumura Kagenori
Yasue Hideki
Bonck Rodney H
Lorence Richard M.
Toyota Jidosha & Kabushiki Kaisha
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