192 clutches and power-stop control – Clutches – Operators
Patent
1997-02-14
1999-04-06
Marmor, Charles A.
192 clutches and power-stop control
Clutches
Operators
477143, 477156, 192109F, F16H 6106
Patent
active
058905758
ABSTRACT:
A changeover valve (13) connected to a shift valve unit (12) via four oil passages L3-L6, and two pressure regulating valves (14.sub.1, 14.sub.2) are provided. At speed changing when the changeover valve (13) is in a first (right) position, an off-going hydraulic clutch is connected to oil passage L3 to control its pressure drop by the pressure regulating valve (14.sub.1) and an on-coming hydraulic clutch is connected to L5 to control its pressure rise by the pressure regulating valve (14.sub.2). After completion of the speed changing, the changeover valve (13) is switched to a second (left) position. At speed changing when the changeover valve (13) is in the second position, an on-coming hydraulic clutch is connected to L4 to control its pressure rise by the pressure regulating valve (14.sub.1) and an off-going hydraulic clutch is connected to the L6 to control its pressure drop by the pressure regulating valve (14). After completion of the speed changing, the changeover valve (13) is switched to the first position. After completion of the speed changing, oil at line pressure is supplied to the on-coming hydraulic clutch from the line pressure oil passage L2 without passing through the pressure regulating valves, and oil is discharged from the off-going hydraulic clutch without passing through the pressure regulating valves.
REFERENCES:
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patent: 4932282 (1990-06-01), Arisumi
patent: 5397284 (1995-03-01), Matsumoto et al.
patent: 5547437 (1996-08-01), Kamada et al.
patent: 5653660 (1997-08-01), Tsukamoto et al.
patent: 5707316 (1998-01-01), Tanahashi et al.
Asatsuke Shoji
Mochizuki Tetsuya
Obinata Jiro
Ohashi Tatsuyuki
Honda Giken Kogyo Kabushiki Kaisha
Joyce William C.
Marmor Charles A.
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