Interrelated power delivery controls – including engine control – Clutch control – With fluid drive
Patent
1996-07-18
1998-08-18
Ta, Khoi Q.
Interrelated power delivery controls, including engine control
Clutch control
With fluid drive
477175, 477176, 477905, F16H 614
Patent
active
057952663
ABSTRACT:
When the change rate d.theta..sub.TH of an accelerator opening degree exceeds a reference value at a time point t.sub.0 as a result of the depression of an accelerator pedal, a predetermined target speed ratio eECONOMY taking preference of a specific fuel consumption up to such time is switched to a during-acceleration target speed ratio ePOWER taking preference of an accelerating performance. For a period from the time point t.sub.0 to a time point t.sub.2 until the actual speed ratio e reaches a minimum value, a feed-forward control is carried out in order to equalize the actual speed ratio e to the during-acceleration target speed ratio ePOWER. For a period from the time point t.sub.2 to a time point t.sub.3, a return-time target speed ratio eTRN gradually increased toward the predetermined target speed ratio eECONOMY is set, and a feed-back control is carried out in order to equalize the actual speed ratio e to the return-time target speed ratio eTRN. Thus, it is possible to set the speed ratio of a torque converter at a high value during a normal cruising of a vehicle to enhance the specific fuel consumption, and to reduce the speed ratio during depression of the accelerator pedal to enhance the accelerating performance.
REFERENCES:
patent: 4577737 (1986-03-01), Niikura et al.
patent: 4872540 (1989-10-01), Sekine et al.
patent: 4881627 (1989-11-01), Ishii
patent: 5086889 (1992-02-01), Nobumoto et al.
patent: 5133232 (1992-07-01), Kikuchi et al.
patent: 5157608 (1992-10-01), Sankpal et al.
patent: 5267158 (1993-11-01), Sakaguchi et al.
patent: 5662552 (1997-09-01), Fukasawa et al.
Hasegawa Koichi
Iwahashi Toru
Yamamoto Yoshinori
Honda Giken Kogyo Kabushiki Kaisha
Ta Khoi Q.
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