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1. 发明专利

JP2002031219A HYDRAULIC CONTROLLER FOR AUTOMATIC TRANSMISSION 失效
公开(公告)号：JP2002031219A
公开(公告)日：2002-01-31
申请号：JP2000217149
申请日：2000-07-18
申请人： AISIN AW CO , TOYOTA MOTOR CORP
发明人： OZAKI KAZUHISA , HOSOKAWA NAOJI , NEGI TOYOJI , OKADA ATSUO , YAMAGUCHI TETSUYA , FUKAI MASAYUKI
IPC分类号： F16H61/02
摘要： PROBLEM TO BE SOLVED: To make an engine brake effective by enhancing responsiveness of a friction engaging element without generating a shock with the engagement of the friction engaging element. SOLUTION: This hydraulic controller for an automatic transmission is constituted of a friction engaging element for making an engine brake effective; a hydraulic servo B-1; an adjusting valve for adjusting original pressure on the basis of signal oil pressure supplied to a signal oil pressure chamber (c), generating engine brake pressure, and supplying it to the hydraulic servo B-1; and a signal oil pressure generating means for generating signal oil pressure. The signal oil pressure is composed of a first range set in accordance with line pressure PL, and a second range set in order to generate specified engaging force in the friction engaging element. When a vehicle travels at high speed, engine brake pressure is sufficient low. When the vehicle travels at low speed, engine brake pressure is sufficiently high. When throttle opening is large, signal oil pressure in the second range is generated, and the friction engaging element can be engaged.

2. 发明专利

JPH111722A ROTARY STRUCTURE AND METHOD FOR MODIFYING ITS SURFACE 失效
公开(公告)号：JPH111722A
公开(公告)日：1999-01-06
申请号：JP33096497
申请日：1997-11-13
申请人： AISIN AW CO
发明人： MARUKI MICHIO , TANIGUCHI TAKAO , OBAYASHI KOJI , YOKOYAMA TAKESHI , YASUDA TAKAHIRO , NEGI TOYOJI , MURATA AKIRA
IPC分类号： C21D1/09 , C21D9/00
摘要： PROBLEM TO BE SOLVED: To provide a rotary structure having a seal groove excellent in wear resistance and also to provide a surface modifying method capable of easily improving the wear resistance of the seal groove. SOLUTION: In this method, the side-wall sealing surface in a seal groove in which a sealing is to be fitted by loose fit, provided to the outside peripheral surface of a cylindrical supporting member, is modified. In this case, the side- wall sealing surface 311 is irradiated with a high density energy beam while relatively moving the high density energy beam along the shape of the side-wall sealing surface 311. The surface layer alone of the irradiated part is heated to a melting point or above and formed into melting zone, and then the melting zone is rapidly solidified. By this method, a surface hardened layer 72 is formed on the side-wall sealing surface 311.

3. 发明专利

JPH02278044A AUTOMATIC TRANSMISSION 失效
公开(公告)号：JPH02278044A
公开(公告)日：1990-11-14
申请号：JP9927789
申请日：1989-04-19
申请人： AISIN AW CO , TOYOTA MOTOR CORP
发明人： YAMAGUCHI KOZO , NEGI TOYOJI , KONDO TEI , IWATSUKI KUNIHIRO
IPC分类号： F16H1/28 , F16H3/44 , F16H57/08
摘要： PURPOSE:To relieve a load on the inside part of the front of the bearing of a pinion gear by a method wherein a part on the front side of a planetary pinion gear is eliminated, and the shape in cross section in an axial direction of the pinion gear is formed longitudinally asymmetrically. CONSTITUTION:In a overdrive planetary gear unit 13, a part (a) on the front side of a planetary gear 17 is eliminated, and the shape in cross section in an axial direction of the gear 17 is formed longitudinally (laterally in a Fig) asymmetrically. Therefore, the weight of the gear 17 is decreased, and a centrifugal force exerted on the gear is reduced. Since the center of gravity of the gear 17 is moved to the rear side, a centrifugal force thereon is strongly exerted on a bearing 103 on the rear side. Thus, a load on an inner part 102a of a bearing 102 on the front side is relieved. Further, since a working point (b) of loads f4 and f5 exerted on the gear 17 of a ring gear 21 and a sun gear 19 is moved to be rear side, a load on an inside part 102a of the bearing 102 is further relieved.

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