Transmission and control method for transmission

    公开(公告)号:US10400893B2

    公开(公告)日:2019-09-03

    申请号:US15738904

    申请日:2016-06-13

    摘要: In a transmission, a controller sets a target line pressure to an offset target value, which is a value obtained by adding a positive offset amount to one of a target PRI pressure and a target SEC pressure, in a speed ratio range in which the offset target value is higher than the other at least during an inertia phase in a sub-transmission mechanism when a coordinated shift is carried out. At that time, the one of the target PRI pressure and the target SEC pressure is the target SEC pressure when a variator is downshifted by the coordinated shift while being the target PRI pressure when the variator is upshifted by the coordinated shift.

    Transmission Control System
    93.
    发明申请

    公开(公告)号:US20190219156A1

    公开(公告)日:2019-07-18

    申请号:US16250108

    申请日:2019-01-17

    IPC分类号: F16H61/02 F16H61/686

    摘要: A method (200) for the open-loop control of a gearbox (100) that comprises an input shaft (105) and a first and a second proportionally controllable shift element (A-F) is provided. The method includes disengaging (215) the first shift element (A-F) according to a first control profile and engaging (220) the second shift element (A-F) according to a second control profile. The method also includes cyclically performing the following during the disengagement and the engagement: determining (230) a difference between the rotational speed of the input shaft (105) and a rotational speed which the input shaft (105) assumes when the second shift element (A-F) has been completely engaged; determining (230) a gradient of the difference; and adapting (230) the first control profile on the basis of the gradient.

    Control device of vehicle
    95.
    发明授权

    公开(公告)号:US10288131B2

    公开(公告)日:2019-05-14

    申请号:US15644154

    申请日:2017-07-07

    摘要: A vehicle control device including a multi-speed transmission switching gear shift positions in accordance with a combination of hydraulic friction engagement devices operations and pressure control solenoid valves, the control device shifting gears by providing a shift output signal including a quick-apply signal to the valves after a first time from a shift request, the control device has: a pulsation drive control portion to control selectively pulsating the pressure control solenoid valves in a cycle; and a quick-apply control prohibiting portion to prohibit a provision of a quick-apply control using the quick-apply signal for a second time from a time of termination of the pulsation drive control, and to permit the provision of the quick-apply control after the elapse of the second time, for a valve having undergone the control, the pulsation drive control portion to terminate the control for a valve when the shift request is made.

    Control device for vehicle and control method for vehicle

    公开(公告)号:US10221943B2

    公开(公告)日:2019-03-05

    申请号:US15648558

    申请日:2017-07-13

    摘要: When a power-on downshift via an intermediate shift stage accompanied by input switching control is required and a predetermined shift stage is a shift stage lower than the intermediate shift stage, an electronic control unit performs torque phase control in a torque phase control time shorter than the torque phase control time that is set when the predetermined shift stage is a shift stage higher than the intermediate shift stage. Accordingly, it is possible to complete disengagement of a disengagement-side element early and to suppress a rapid increase of an input shaft rotation speed due to a clutch torque remaining.

    Shifter apparatus
    99.
    发明授权

    公开(公告)号:US10072750B2

    公开(公告)日:2018-09-11

    申请号:US14058763

    申请日:2013-10-21

    申请人: Michael Grunbaum

    发明人: Michael Grunbaum

    摘要: A shifter apparatus for manually changing gear ratio in a planetary gear transmission, said planetary gear transmission being of the type which comprises a plurality of actuators, wherein the sequential actuation of said actuators progressively causes a change of gear ratio in said planetary gear transmission. The shifter apparatus advantageously provides a single lever which can be quickly and easily shifted by a user.

    Control device for automatic transmission

    公开(公告)号:US10006522B2

    公开(公告)日:2018-06-26

    申请号:US15193847

    申请日:2016-06-27

    摘要: A control device for an automatic transmission is provided. The automatic transmission is configured to realize a plurality of gear shift stages by combination of a plurality of engaging devices engaged or released among the plurality of engaging devices. The control device includes an electronic control unit. The electronic control unit is configured to select, as the setting pattern realizing an intermediate gear shift stage, the setting pattern with a smaller number of switching of the engagement or release of the engaging device than the number of switching of the setting pattern with the largest number of switching among the plurality of setting patterns when a shift is performed from a first gear shift stage to a second gear shift stage through the intermediate gear shift stage in a case where the electronic control unit determines that the shift is to be performed through the intermediate gear shift stage.