F16H2061/6614

CONTROL DEVICE OF VEHICLE

In a control device of a vehicle including a first power transmission path transmitting a power through a belt-type continuously variable transmission and a second power transmission path transmitting a power through a reduction gear mechanism in parallel between an input shaft and an output shaft and including a dog clutch in series with the reduction gear mechanism in the second power transmission path, when the dog clutch is in an engagement transition state and a rotational speed change of the output shaft is equal to or greater than a predetermined value, the engagement transition state of the dog clutch is canceled to release the dog clutch.

Transmission and control method for transmission

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.

CONTROL APPARATUS FOR VEHICLE DRIVE-FORCE TRANSMITTING APPARATUS
20190241172 · 2019-08-08 · ·

A control apparatus for a vehicle drive-force transmitting apparatus that defines first and second drive-force transmitting paths between input and output rotary members. The second drive-force transmitting path is established by engagement of a second engagement device. The control apparatus includes an operation-state determining portion configured to determine which one of a plurality of states is established as an operation state of the second engagement device, by determining whether a plurality of transition-completion conditions, each of which is required to determine that a transition of the operation state of the second engagement device to a corresponding one of the plurality of states from another of the plurality of states has been completed, are satisfied or not, based on () a state of a hydraulic control executed to control a hydraulic pressure supplied to the second engagement device and () a rotational speed difference of the second engagement device.

Transmission control device and transmission control method

In a transmission control device, a controller determines failure of a rotation sensor. A hydraulic control circuit and the controller variably control a speed ratio of a variator, and in a case where the failure is determined, execute first control of restricting a shift range of the variator. The hydraulic control circuit and the controller variably control a gear position of a sub-transmission mechanism, and in a case where the failure is determined, execute second control of fixing the gear position of the sub-transmission mechanism to first speed. The hydraulic control circuit and the controller execute the second control at a different timing from the first control in a case where the gear position of the sub-transmission mechanism upon a determination of the failure is second speed.

CONTROL METHOD FOR PREDICTION, DETECTION, AND COMPENSATION OF TORQUE REVERSAL DURING SYNCHRONOUS SHIFTING OF A BALL-TYPE CONTINUOUSLY VARIABLE PLANETARY
20190136969 · 2019-05-09 ·

A control system for a multiple-mode continuously variable transmission is described as having a ball planetary variator operably coupled to multiple-mode gearing. The control system has a transmission control module configured to receive a plurality of electronic input signals, and to determine a mode of operation from a plurality of control ranges based at least in part on the plurality of electronic input signals. In some embodiments, the system is configured to predict, detect, and compensate for a torque reversal module through the ball planetary variator.

HYDRAULIC CONTROL SYSTEM OF SHIFT CONTROL UNIT FOR DUAL CLUTCH TRANSMISSION

A hydraulic control system may include control valve to selectively supply line pressure to first and second ejection flow channels, first shift valve converting flow channel, second shift valve converting path to selectively supply hydraulic pressure of the first ejection path to first chambers of first and second actuators and to selectively supply hydraulic pressure of the second ejection path to second chambers of the first and second actuators, third shift valve converting path to selectively supply hydraulic pressure of the first ejection path to first chamber of third actuator and to selectively supply hydraulic pressure of the second ejection path to second chamber of third actuator, and fourth shift valve converting path to selectively supply hydraulic pressure of the first ejection path to first chambers of fourth and fifth actuators and to selectively supply hydraulic pressure of the second ejection path to second chambers of fourth and fifth actuators.

CONTROL DEVICE FOR AUTOMATIC TRANSMISSION AND CONTROL METHOD FOR AUTOMATIC TRANSMISSION

A control device that controls an automatic transmission is provided, in which device the automatic transmission includes a variator disposed in a power transmission path between a driving source and a driving wheel of a vehicle, and a friction engaging element disposed between the variator and the driving wheel, in a manner capable of transmitting a power disconnectably via the power transmission path. The control device increases a speed ratio of the variator toward a predetermined target speed ratio with disengaging the friction engaging element during a vehicle stop of the vehicle, and executes a learning regarding a hydraulic control of the friction engaging element when the friction engaging element is disengaged during the vehicle stop. The control device decreases the target speed ratio at a time of learning when the learning is executed during the vehicle stop, compared to a time of vehicle stop other than the time of learning.

VEHICLE CONTROL DEVICE AND VEHICLE CONTROL METHOD

A vehicle control device for controlling a vehicle including a variator provided in a power transmission path between a driving source and a driving wheel of a vehicle and a friction engaging element provided between the variator and the driving wheel, engaged when a running range is selected, while disengaged when a non-running range is selected and shutting off transmission of power through the power transmission path is provided. In this embodiment, an operating state of the vehicle is detected, a target speed ratio of the variator according to the operating state of the vehicle is set, if an actual speed ratio of the variator is smaller than the target speed ratio, shifting control of lowering a supply hydraulic pressure to a primary pulley of the variator and increasing the speed ratio of the variator is executed, and when the selection is switched from the non-running range to the running range during execution of the shifting control, lowering of the supply hydraulic pressure to the primary pulley after the switching is regulated.

HYDRAULIC CONTROL DEVICE FOR AUTOMATIC TRANSMISSION

A hydraulic control device that includes a second solenoid valve that is capable of supplying a resisting pressure that maintains the switching valve in the non-reverse state against the reverse range pressure, wherein the switching valve is maintained in the non-reverse state by supplying the resisting pressure from the second solenoid valve while a travel range is switched to at least a reverse range during forward travel.

Control device for continuously variable transmission equipped with auxiliary transmission

A control device for a continuously variable transmission with an auxiliary transmission includes: a cooperative control section; and a depression shift control section, wherein when an actual transmission gear ratio of the variator at the judgment of the depression shift control is higher than a first transmission gear ratio set as a lowest value of a control of the transmission gear ratio, the depression shift control section configured to downshift the variator, and to set a target transmission gear ratio at the shift of the variator to a second transmission gear ratio which is a restriction value that is higher than the first transmission gear ratio.