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公开(公告)号：US20220297668A1
公开(公告)日：2022-09-22
申请号：US17592788
申请日：2022-02-04
Applicant: Mazda Motor Corporation
Inventor： Yasuhiro Ogauchi , Shinya Kamada , Akihiro Uchida
Abstract: A power transmission system for a hybrid vehicle includes planetary gear mechanisms that couple an internal combustion engine, an electric motor, and a transmission, and has a brake that engages and disengages the internal combustion engine with and from a housing. The planetary gear mechanisms have a first rotary element, a second rotary element, a third rotary element, and a fourth rotary element. Any one of the internal combustion engine, the electric motor, and the transmission is connected to a respective one of the first rotary element, the second rotary element, and the third rotary element. The fourth rotary element is configured as an inertial member for suppressing transmission of a torque fluctuation of the internal combustion engine to the transmission side.
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公开(公告)号：US09964185B2
公开(公告)日：2018-05-08
申请号：US15033798
申请日：2014-11-05
Applicant: MAZDA MOTOR CORPORATION
Inventor： Yasuhiro Ogauchi , Shinya Kamada , Tatsuhiko Iwasaki
CPC classification number: F16H3/66 , F16H2003/442 , F16H2200/006 , F16H2200/2012 , F16H2200/2015 , F16H2200/2043
Abstract: Disclosed is an automatic transmission (10) in which, of four planetary gear sets (PG1, PG2, PG3, and PG4), two planetary gear sets (PG2, PG3) are arranged such that one of the two planetary gear sets (PG2, PG3) is disposed radially inward from the other to form a two-stage planetary gear set (PGt). One planetary gear set (PG1) of the other two planetary gear sets functions as a specified planetary gear set disposed adjacent to the two-stage planetary gear set in a transmission axial direction. A carrier (C3) of the radially outer planetary gear set (PG3) of the two-stage planetary gear set, a carrier (C1) of the specified planetary gear set, and an output section (an output gear (13)) are always engaged together.
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公开(公告)号：US09562590B2
公开(公告)日：2017-02-07
申请号：US14911924
申请日：2014-08-07
Applicant: Mazda Motor Corporation
Inventor： Yasuhiro Ogauchi , Masaru Nakagishi , Shinya Kamada , Tatsuhiko Iwasaki
IPC: F16H3/66
CPC classification number: F16H3/666 , F16H2200/006 , F16H2200/2012 , F16H2200/2043
Abstract: An automatic transmission includes: an input shaft connected to a driving source; an output shaft provided coaxially with the input shaft and connected to a differential mechanism; double pinion type first and second planetary gear sets; single pinion type third and fourth planetary gear sets; first to third clutches each configured to connect and disconnect predetermined rotational elements of the planetary gear sets to and from each other; and first and second brakes configured to connect and disconnect a predetermined rotational element of the planetary gear set to and from a transmission case. When the first to third clutches are engaged, and the first and second brakes are released, an eighth gear stage whose reduction ratio is 1 is formed.
Abstract translation: 一种自动变速器包括：连接到驱动源的输入轴; 输出轴与输入轴同轴地设置并连接到差速机构; 双小齿轮型第一和第二行星齿轮组; 单小齿轮型第三和第四行星齿轮组; 第一到第三离合器，每个离合器被构造成将行星齿轮组的预定旋转元件彼此连接和断开; 以及第一和第二制动器，其构造成将行星齿轮组的预定旋转元件连接和断开与变速器壳体和/或从变速器壳体分离。 当第一至第三离合器接合，并且第一和第二制动器被释放时，形成减速比为1的第八档位。
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公开(公告)号：US10385931B2
公开(公告)日：2019-08-20
申请号：US15119474
申请日：2015-02-20
Applicant: MAZDA MOTOR CORPORATION
Inventor： Tatsuhiko Iwasaki , Shinya Kamada , Yasuhiro Ogauchi
IPC: F16D25/0638 , F16D25/12 , F16D13/69 , B60T1/06 , F16D55/00 , F16D65/18 , F16H63/30 , F16H57/10 , F16D121/04 , F16H3/66
Abstract: A transmission brake device includes: a friction plate set configured such that a plurality of rotation-side friction plates; an engaging piston disposed on an axial side of the friction plate set; a clearance adjustment piston disposed on a side of the engaging piston opposite to the friction plate set; a clearance adjustment hydraulic chamber configured to move the clearance adjustment piston; and an engaging hydraulic chamber configured to move the engaging piston; a biasing member disposed between each adjacent pair of the fixed-side friction plates, the biasing member being configured to bias each adjacent pair of the fixed-side friction plates in directions away from each other. The biasing member distributes the clutch clearance in a gap between each adjacent pair of the fixed-side friction plates when a hydraulic pressure is supplied only to the clearance adjustment hydraulic chamber.
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公开(公告)号：US09845871B2
公开(公告)日：2017-12-19
申请号：US14677323
申请日：2015-04-02
Applicant: Mazda Motor Corporation
Inventor： Tatsuhiko Iwasaki , Shinya Kamada , Yasuhiro Ogauchi
IPC: F16H63/30 , F16H3/66 , F16H61/686 , F16H3/44
CPC classification number: F16H63/3026 , F16H3/66 , F16H61/686 , F16H2003/442 , F16H2200/006 , F16H2200/2012 , F16H2200/2043 , F16H2200/2082
Abstract: An automatic transmission is provided. The transmission includes clutches coaxially arranged in layers in a radial direction of the transmission. The transmission includes a piston provided to each clutch, the pistons being aligned in the radial direction on a same plane perpendicular to an axis of the transmission, without overlapping with each other in an axial view. The transmission includes a common rotational member having a wall, commonly used for the clutches, and disposed at a predetermined position of the transmission in an axial direction, wherein the wall is formed along the plane. The transmission includes operational hydraulic passages parallely arranged in the wall of the common rotational member in a circumferential direction of the transmission on the same plane perpendicular to the axis, each of the operational hydraulic passages communicating with one of operational hydraulic chambers of the respective clutches.
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Patent Agency Ranking
公开(公告)号：US20160108997A1
公开(公告)日：2016-04-21
申请号：US14880835
申请日：2015-10-12
Applicant: Mazda Motor Corporation
Inventor： Yasuhiro Ogauchi , Shinya Kamada , Tatsuhiko Iwasaki
IPC: F16H3/66
CPC classification number: F16H3/666 , F16H3/66 , F16H2003/442 , F16H2200/006 , F16H2200/2012 , F16H2200/2043
Abstract: To simplify the hydraulic pressure supply passage to each clutch, an multistage automatic transmission comprises an input part and output part, three clutches, two brakes, and four planetary gear sets, where the first and fourth sets are of a single pinion type and the second and third of a double pinion type. The input and output parts and the planetary gear sets connect to each other and the clutches and brakes decouple components in such a way that enlargement as a whole of the transmission and the deterioration of the responsiveness of the shift control are controlled.
Abstract translation: 为了简化到每个离合器的液压供给通道，多级自动变速器包括输入部分和输出部分，三个离合器，两个制动器和四个行星齿轮组，其中第一和第四组是单小齿轮类型，第二组是第二组 是双小齿轮类型的三分之一。 输入和输出部件和行星齿轮组彼此连接，并且离合器和制动器以这样的方式将部件分离，使得整个变速器的扩大和变速控制的响应性的恶化得到控制。
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公开(公告)号：US11697337B2
公开(公告)日：2023-07-11
申请号：US17592772
申请日：2022-02-04
Applicant: Mazda Motor Corporation
Inventor： Yasuhiro Ogauchi , Shinya Kamada , Akihiro Uchida
CPC classification number: B60K6/365 , B60K6/387 , B60K6/40 , B60K6/48 , B60K6/547 , B60K2006/381 , B60K2006/4816
Abstract: To provide a drive system for a hybrid vehicle capable of suppressing energy loss by slip control at a start of an internal combustion engine during electric vehicle (EV) travel, a power transmission system for the hybrid vehicle is configured to couple an internal combustion engine, an electric motor, and a transmission by planetary gear mechanisms, has a brake that engages and disengages the internal combustion engine with and from a case, engages the brake during EV travel in which only the electric motor is used as a drive source, and is configured to start the internal combustion engine by disengaging the brake at the time of switching from the EV travel to hybrid vehicle (HEV) travel in which the internal combustion engine and the electric motor are used as drive sources.
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公开(公告)号：US09958065B2
公开(公告)日：2018-05-01
申请号：US14694928
申请日：2015-04-23
Applicant: Mazda Motor Corporation
Inventor： Tatsuhiko Iwasaki , Shinya Kamada , Yasuhiro Ogauchi
CPC classification number: F16H63/3026 , F16D13/69 , F16D25/0638 , F16D25/12 , F16D25/126 , F16H57/02 , F16H57/10
Abstract: A brake device of a transmission is provided. The brake device includes a friction plate set including fixed friction plates and rotatable friction plates alternately disposed with each other, an engaging piston, and a clearance adjusting piston. A clearance adjusting hydraulic chamber is formed on a side of the clearance adjusting piston opposite to the friction plate set, and a concave portion is formed in a surface of the clearance adjusting piston on a friction plate set side. A base part of the engaging piston on a side opposite to the friction plate set is slidably fitted into the concave portion of the clearance adjusting piston and an engaging hydraulic chamber is formed by the base part and the concave part.
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公开(公告)号：US09593749B2
公开(公告)日：2017-03-14
申请号：US15037124
申请日：2014-11-28
Applicant: MAZDA MOTOR CORPORATION
Inventor： Yasuhiro Ogauchi , Shinya Kamada , Tatsuhiko Iwasaki , Masaru Nakagishi
IPC: F16H3/66
CPC classification number: F16H3/666 , F16H2200/006 , F16H2200/2012 , F16H2200/2043
Abstract: An automatic transmission (1) includes a first planetary gear set (PL1) of a double pinion type, second to fourth planetary gear sets (PL2-PL4) of a single pinion type, first to third clutches (CL1-CL3), and first and second brakes (B1 and B2). A third carrier (C3) and a fourth sun gear (S4) are always coupled to an input (i.e., an input shaft (3)). An output (i.e., an output gear (7)) is always coupled to a fourth ring gear (R4). A first carrier (C1) is always coupled to a third sun gear (S3). A second sun gear (S2) is always coupled to a third ring gear (R3). A first ring gear (R1) is always coupled to a second ring gear (R2).
Abstract translation: 自动变速器（1）包括单小齿轮型，第一至第三离合器（CL1-CL3）和第一至第三离合器（CL1-CL3）的双小齿轮型，第二至第四行星齿轮组（PL2-PL4）的第一行星齿轮组（PL1） 和第二制动器（B1和B2）。 第三载体（C3）和第四太阳齿轮（S4）总是与输入（即，输入轴（3））耦合。 输出（即，输出齿轮（7））总是耦合到第四齿圈（R4）。 第一载体（C1）总是与第三太阳齿轮（S3）连接。 第二太阳齿轮（S2）总是连接到第三齿圈（R3）。 第一环形齿轮（R1）总是联接到第二齿圈（R2）。
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公开(公告)号：US12128873B2
公开(公告)日：2024-10-29
申请号：US17592788
申请日：2022-02-04
Applicant: Mazda Motor Corporation
Inventor： Yasuhiro Ogauchi , Shinya Kamada , Akihiro Uchida
CPC classification number: B60W20/40 , B60K6/365 , B60K6/38 , B60K6/54 , B60W10/02 , B60K2006/381 , B60Y2200/92 , F16H15/48 , F16H57/10 , F16H2200/2007 , F16H2200/2035 , F16H2200/2038
Abstract: A power transmission system for a hybrid vehicle includes planetary gear mechanisms that couple an internal combustion engine, an electric motor, and a transmission, and has a brake that engages and disengages the internal combustion engine with and from a housing. The planetary gear mechanisms have a first rotary element, a second rotary element, a third rotary element, and a fourth rotary element. Any one of the internal combustion engine, the electric motor, and the transmission is connected to a respective one of the first rotary element, the second rotary element, and the third rotary element. The fourth rotary element is configured as an inertial member for suppressing transmission of a torque fluctuation of the internal combustion engine to the transmission side.
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