Interrelated power delivery controls – including engine control – Transmission control – Transmission controlled by engine
Patent
1996-05-10
1998-09-29
Marmor, Charles A.
Interrelated power delivery controls, including engine control
Transmission control
Transmission controlled by engine
477 70, 477115, 477155, F16H 6106
Patent
active
058139435
ABSTRACT:
A control system for an automatic transmission includes: a clutch adapted to be applied when a forward running range is selected, to transmit the rotation of an engine to the transmission mechanism of a speed change unit and a hydraulic servo for applying/releasing the clutch. A control unit controls oil pressure fed to the hydraulic servo and includes: an application starting pressure detector for detecting application starting pressure at the instant when the application of the clutch is started; an initial application pressure setter for setting an initial application pressure on the basis of the detected application starting pressure; and an oil pressure regulator for adjusting the oil pressure fed to the hydraulic servo, when a change is made to a forward running range, and then gradually raising that oil pressure. The application starting pressure detected by the application starting pressure detector is the value at which the application of the clutch is actually started, so that the initial application pressure can be properly set even if the actual oil pressure fed to the hydraulic servo regardless of the urging force of a return spring or variation in manufacture of the hydraulic control system.
REFERENCES:
patent: 4718525 (1988-01-01), Yamaguchi et al.
patent: 5078028 (1992-01-01), Ishikawa et al.
patent: 5125293 (1992-06-01), Takizawa
patent: 5133230 (1992-07-01), Ito et al.
patent: 5188005 (1993-02-01), Sankpal et al.
patent: 5267491 (1993-12-01), Sumimoto et al.
patent: 5272630 (1993-12-01), Brown et al.
patent: 5343782 (1994-09-01), Jamzadeh
patent: 5363724 (1994-11-01), Asahara
patent: 5368531 (1994-11-01), Ando et al.
patent: 5382201 (1995-01-01), Iizuka
patent: 5393275 (1995-02-01), Okada et al.
patent: 5429561 (1995-07-01), Wakahara et al.
patent: 5462501 (1995-10-01), Bullmer et al.
patent: 5522779 (1996-06-01), Tabata et al.
patent: 5547436 (1996-08-01), Hayabuchi et al.
patent: 5583768 (1996-12-01), Hamajima et al.
patent: 5586954 (1996-12-01), Iwata et al.
patent: 5649880 (1997-07-01), Tsutsui et al.
Fujita Yasuhiro
Hayabuchi Masahiro
Kousaka Yuuki
Tsutsui Hiroshi
Yamamoto Yoshihisa
Aisin Aw Co. Ltd.
Kwon Peter T.
Marmor Charles A.
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