Interrelated power delivery controls – including engine control – Transmission control – Transmission controlled by engine
Patent
1996-12-20
1998-11-17
Ta, Khoi Q.
Interrelated power delivery controls, including engine control
Transmission control
Transmission controlled by engine
477143, 477144, 477156, F16H 6104
Patent
active
058368523
ABSTRACT:
Uncomfortable travel of a vehicle due to engine brake actions during the travel of the vehicle in traffic is prevented without using an one-way clutch within a transmission mechanism. An automatic transmission is composed of rotational elements that are braked at the time of establishing low stages, a brake that brakes the rotational elements, and control systems which control the oil pressure of the hydraulic servo in the brake. A band brake that creates differences in application forces, using self-energizing and deenergizing actions, serves as the brake, which is set to have an area in which the oil pressure during the drive is lower than the oil pressure during the non-drive, by setting the self-energizing direction as a direction of rotation of the rotational element during the drive and the deenergizing direction as an opposite direction of rotation of the rotational element during the non-drive. The control systems have a supplying mechanism which supplies oil to the hydraulic servo of the band brake at an oil pressure that is lower than the oil pressure during the non-drive and is equal to or higher than the oil pressure during the drive.
REFERENCES:
patent: 3650160 (1972-03-01), Higuchi et al.
patent: 3714836 (1973-02-01), Pierce, Jr. et al.
patent: 3896685 (1975-07-01), Shellman
patent: 5027676 (1991-07-01), Fujiwara et al.
Hayabuchi Masahiro
Hisano Takayuki
Sugiura Nobutada
Tsukamoto Kazumasa
Tsutsui Hiroshi
Aisin Aw Co. Ltd.
Ta Khoi Q.
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