Shift control system for automatic transmission

Interrelated power delivery controls – including engine control – Transmission control – Transmission controlled by engine

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477156, B60K 4106

Patent

active

055272363

ABSTRACT:
A shift control system for an automatic transmission including frictional engagement elements to be applied by actuating a piston by an oil pressure. The shift control system comprises: a pressure regulating valve for regulating the oil pressure to be fed to the frictional engagement elements and for controlling the regulated pressure level; a shift detector for detecting a shift to be executed by feeding the oil pressure to the frictional engagement elements; a low-pressure standby unit for setting the regulated pressure level of the pressure regulator valve to such a value during a predetermined time period after the shift has been detected that the oil pressure to be fed to the frictional engagement elements moves only the piston; and a booster for controlling the regulated pressure level so that the oil pressure to be fed to the frictional engagement elements may gradually increase after lapse of the predetermined time period.

REFERENCES:
patent: 3831465 (1974-08-01), Murakami
patent: 4282781 (1981-08-01), Iwanaga et al.
patent: 4836057 (1989-06-01), Asayama et al.
patent: 4845618 (1989-07-01), Narita
patent: 4846021 (1989-07-01), Hamano et al.
patent: 4882952 (1989-11-01), Kashihara et al.
patent: 4893527 (1990-01-01), Furusawa et al.
patent: 4930375 (1990-06-01), Yamamoto et al.
patent: 5179875 (1993-01-01), Brown
SAE 890529, pp. 45-53, Maurice B. Leising, et al., "The All-Adaptive Controls for the Chrysler Ultradrive Transaxle".
SAE 890528, pp. 167-183, Berthold Martin, et al., "The Chrysler A-604 Ultradrive 4-Speed Automatic Transaxle".

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