Interrelated power delivery controls – including engine control – Transmission control – Transmission controlled by engine
Patent
1997-09-11
1999-12-28
Marmor, Charles A.
Interrelated power delivery controls, including engine control
Transmission control
Transmission controlled by engine
477143, 477155, F16H 6106
Patent
active
060074582
ABSTRACT:
Upshifting is performed in a short time without giving rise to shocks. For that purpose, at the time of upshifting, a hydraulic pressure (QUPOFF) of a hydraulic engaging element on disengaging side is controlled such that the input and output speed ratio ("Gratio") of a transmission is decreased to, and held at, a predetermined slipping region (YG(N)S) that is lower than an engaging region (YG(N)L)-YG(N)H) to be set based on a gear ratio which is established by the engagement of the hydraulic engaging element on the disengaging side. The hydraulic pressure (QUPON) of a hydraulic engaging element on engaging side is gradually increased. When "Gratio" once falls below YG(N)L and then increases up again to YGCONOK, QUPOFF is lowered to a predetermined low pressure (QUPOFFB) at a lapse of a predetermined time (YTMUP8). Once "Gratio">YGCONOK, QUPON is increased to a predetermined high pressure QUPONB at a lapse of a second predetermined time YTMUP3. YTMUP8 is set so as to become shorter with an increase in a vehicle speed, and YTMUP3 is set so as to become longer with an increase in the vehicle speed.
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Ishibashi Hiromitsu
Ohashi Tatsuyuki
Okada Kazuo
Shibuya Kouji
Tanizawa Shoichi
Honda Giken Kogyo Kabushiki Kaisha
Luno Scott
Marmor Charles A.
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