OIL PRESSURE SUPPLY SYSTEM OF AUTOMATIC TRANSMISSION

    公开(公告)号:US20190120371A1

    公开(公告)日:2019-04-25

    申请号:US15828975

    申请日:2017-12-01

    Inventor: Yong Uk SHIN

    Abstract: The present disclosure provides an oil pressure supply system of an automatic transmission for a vehicle. The system may include: a mechanical oil pump; a line regulator valve configured to stably control the oil pressure supplied through the line pressure path and to supply the oil pressure to a first path; a torque converter control valve configured to control the oil pressure supplied through the first path and to supply the oil pressure to a second path and a third path; a torque converter lockup clutch control valve; an electric oil pump; a switch valve disposed on the seventh path and configured to open and close the oil pressure supplied to an eighth path; and a flow control valve configured to control a portion of the oil pressure supplied to the eighth path and to supply the portion of the oil pressure to the cooling/lubricating unit through a ninth path.

    POWER TRANSMISSION APPARATUS FOR VEHICLE
    13.
    发明申请

    公开(公告)号:US20200378486A1

    公开(公告)日:2020-12-03

    申请号:US16576385

    申请日:2019-09-19

    Abstract: A power transmission apparatus may include a first input shaft, a second input shaft external and selectively connectable to the first input shaft, a third input shaft external to the second input shaft and selectively connectable to the first input shaft, an intermediate shaft, first and second output shafts, first and second idle shafts, a planetary gear set mounted on the intermediate shaft and having first to elements and where two elements are selectively connectable to the intermediate shaft, a plurality of gear sets allowing torque flows between the various shafts and the planetary gear set, first and second synchronizers respectively mounted on the first and second output shafts, selectively receiving a torque from the second and third input shafts through two paths, and transmitting the received torque to the first and second output shaft, and four clutches.

    POWERTRAIN FOR VEHICLE
    14.
    发明申请

    公开(公告)号:US20200116237A1

    公开(公告)日:2020-04-16

    申请号:US16255243

    申请日:2019-01-23

    Abstract: A powertrain for a vehicle may include a compound planetary gear set configured such that, of four rotation elements, a first rotation element is connected to an input shaft and a second rotation element is connected to an output element; a brake provided to connect a rotating body to a transmission housing to be locked thereto; a first clutch device provided to switch a connection state of the rotating body between a third rotation element and a fourth rotation element of the compound planetary gear set; and a second clutch device provided to switch a connection state of the second rotation element of the compound planetary gear set to the input shaft.

    CLUTCHING DEVICE OF AN AUTOMATIC TRANSMISSION

    公开(公告)号:US20190178305A1

    公开(公告)日:2019-06-13

    申请号:US16151608

    申请日:2018-10-04

    Abstract: A clutching device of an automatic transmission may include a clutch drum connected to a first rotation element, a clutch connected to the clutch drum and a second rotation element, and a piston device to operate the clutch, wherein the piston device may include a first piston forming a first sealed space with the first rotation element and the clutch drum and moving toward the clutch by a hydraulic pressure supplied to the first sealed space, a second piston forming a second sealed space with the first piston and moving toward the clutch to directly press the clutch by a hydraulic pressure supplied to the second sealed space, a spring retainer disposed on the first rotation element and forming a third space with the second piston and the first rotation element, and a return spring stored in the third space and abutted by the spring retainer and the second piston.

    METHOD FOR CONTROLLING ELECTRONIC OIL PUMP OF TRANSMISSION

    公开(公告)号:US20170108112A1

    公开(公告)日:2017-04-20

    申请号:US15089088

    申请日:2016-04-01

    CPC classification number: F16H57/0435 F16H57/0412 F16H57/0473

    Abstract: A method for controlling an Electronic Oil Pump (EOP) of a transmission includes performing a clutch temperature determination by determining whether a temperature of a clutch is equal to or greater than a predetermined reference value (A) previously input to a control unit, performing a vehicle speed check by, if it is determined that the clutch temperature is less than the predetermined reference value (A) previously input to the control unit, checking whether a vehicle speed is equal to or greater than a predetermined reference value (C) previously input to the control unit, and performing oil supply by the control unit supplying oil to the transmission by operating the EOP, wherein the oil supplied from the EOP is selectively supplied to a clutch or a gear of the transmission by controlling a solenoid valve.

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