Interrelated power delivery controls – including engine control – Transmission control – Engine controlled by transmission
Patent
1996-11-26
1998-07-07
Ta, Khoi Q.
Interrelated power delivery controls, including engine control
Transmission control
Engine controlled by transmission
477110, 477120, 477156, 477158, 477143, B60K 4104, F16H 6126
Patent
active
057760306
ABSTRACT:
A controller (100 in FIG. 1) for relieving a gear shift shock in a vehicle, comprising an input torque calculation portion (131) which calculates the input torque (T.sub.t) of the stepped automatic transmission mechanism of the vehicle from engine r.p.m. (N.sub.e) and turbine r.p.m. (N.sub.e), a shift start recognition portion (134) which recognizes the real mechanical shift start timing of the stepped automatic transmission mechanism in accordance with the change of the input torque (T.sub.t), a line-pressure correction magnitude calculation portion (142) which calculates a line-pressure correction magnitude (.DELTA.PL) during the gear shift operation of the stepped automatic transmission mechanism when the shift start has been recognized, a standard line pressure calculation portion (143) which calculates a standard line pressure (PL), and a command line pressure calculation portion (144) which adds the line-pressure correction magnitude (.DELTA.PL) to the standard line pressure (PL) and which delivers the resulting sum to a valve (52) for controlling the oil pressure of the hydraulic circuit of the stepped automatic transmission mechanism.
REFERENCES:
patent: 4350058 (1982-09-01), Miller
patent: 4353272 (1982-10-01), Schneider et al.
patent: 4724723 (1988-02-01), Lockhart et al.
patent: 4813307 (1989-03-01), Hiramatsu et al.
patent: 4933851 (1990-06-01), Ito et al.
patent: 5046383 (1991-09-01), Butts et al.
patent: 5060541 (1991-10-01), Shimanaka
patent: 5086670 (1992-02-01), Nitz et al.
patent: 5094125 (1992-03-01), Bota
patent: 5152192 (1992-10-01), Koenig et al.
patent: 5239895 (1993-08-01), Kroger
patent: 5292288 (1994-03-01), Kashiwabara et al.
patent: 5303614 (1994-04-01), Sasaki et al.
patent: 5335568 (1994-08-01), Kammerl et al.
Communication from European Patent Office dated Sep. 4, 1995.
Control Technology of Electronically-Controlled Automatic Transmissions with Feedback Control; Automotive Technology, vol. 42, No. 8, 1988, pp. 1004-1011 with attached statement in English.
U.S. Patent Application No. 07/859,987, filed Mar. 30, 1992.
Ishii Junich
Kimura Hiroshi
Minowa Toshimichi
Ozaki Naoyuki
Shiraishi Takashi
Hitachi , Ltd.
Ta Khoi Q.
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