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    • 1. 发明专利
    • DE69620308D1
    • 2002-05-08
    • DE69620308
    • 1996-07-11
    • AISIN AW CO
    • TABATA ATSUSHIFUKUMURA KAGENORIHOJO YASUOSHIMIZU TAKASHIKASUYA SATORU
    • F16H3/44F16H3/66
    • An automatic transmission for a vehicle, as provided a plurality of sets of planetary gear units in which the ratios of the tooth numbers of the sun gears to the tooth numbers of the ring gears are different from each other. In the two sets of planetary gear units in which the ratios of the tooth numbers of the sun gears to the tooth numbers of the ring gears are different from each other, the ring gears are identical to each other in the tooth number, the normal module, the normal pressure angle, the angle of torsion, the pitch radius, the base radius, the bottom diameter, the top diameter, the tooth height, the dedendum, the addendum, the lead, the coefficient of normal shift and the arcuate tooth thickness, and the pinions of those two sets of planetary gear units are identical to each other in at least the arcuate tooth thickness, the coefficient of normal shift, the dedendum, the addendum, the tooth height, the angle of torsion, the normal pressure angle and the normal module.
    • 5. 发明专利
    • DE69512352D1
    • 1999-10-28
    • DE69512352
    • 1995-12-01
    • AISIN AW COTOYOTA MOTOR CO LTD
    • TSUKAMOTO KAZUMASAANDO MASAHIKOFUKATSU AKIRAMAE TOSHIYUKISAKAI MOTOYUKIHAMAJIMA TETSUOKAIGAWA MASATOFUKUMURA KAGENORIOBA HIDEHIROHOJO YASUOTABATA ATSUSHITAKAHASHI NOBUAKI
    • F16H61/02F16H61/06
    • A hydraulic control system for an automatic transmission comprising: a frictional engagement element (B-3); a hydraulic servo (28) for controlling the application/release of the frictional engagement element (B-3); an oil passage (201) connected to the hydraulic servo (28) for feeding/releasing an oil pressure to the hydraulic servo (28); a pressure regulator valve (25) disposed in the oil passage; and signal pressure generating means (SLU;...) for applying a signal pressure to the pressure regulator valve (25). The oil passage (201) includes: a first oil passage (201d) for feeding the oil pressure to the pressure regulator valve (25); and a second oil passage (201e) for feeding the oil pressure from the pressure regulator valve (25) to the hydraulic servo (28). The pressure regulator valve (25) includes: a valve member (250); an input port (254) connected to the first oil passage (201d); an output port (255) connected to the second oil passage (201e); and a drain port (257) connected to a drain oil passage (EX). The valve member (250) has: a first pressure receiving area (A₁) to be fed with the feedback pressure of the second oil passage (201e) in a direction to provide the communication between the output port (255) and the drain port (257); a second pressure receiving area (A₂) to be fed with the signal pressure (P SLU ) in a direction to provide the communication the output port (255) and the drain port (257); and a third pressure receiving area (A₃) having an area different from that of the second pressure receiving area (A₂). The signal pressure generating means (SLU;...) feeds the signal pressure to the third pressure receiving area (A₃) at all times and the signal pressure (P SLU ) selectively to the second pressure receiving area (A₂).
    • 8. 发明专利
    • DE69620308T2
    • 2002-08-08
    • DE69620308
    • 1996-07-11
    • AISIN AW CO
    • TABATA ATSUSHIFUKUMURA KAGENORIHOJO YASUOSHIMIZU TAKASHIKASUYA SATORU
    • F16H3/44F16H3/66
    • An automatic transmission for a vehicle, as provided a plurality of sets of planetary gear units in which the ratios of the tooth numbers of the sun gears to the tooth numbers of the ring gears are different from each other. In the two sets of planetary gear units in which the ratios of the tooth numbers of the sun gears to the tooth numbers of the ring gears are different from each other, the ring gears are identical to each other in the tooth number, the normal module, the normal pressure angle, the angle of torsion, the pitch radius, the base radius, the bottom diameter, the top diameter, the tooth height, the dedendum, the addendum, the lead, the coefficient of normal shift and the arcuate tooth thickness, and the pinions of those two sets of planetary gear units are identical to each other in at least the arcuate tooth thickness, the coefficient of normal shift, the dedendum, the addendum, the tooth height, the angle of torsion, the normal pressure angle and the normal module.