Abstract: A transmission control method of a hybrid vehicle provided with a transmission having no reverse gear, may include performing a speed control of a motor with a target RPM corresponding to an existing gear step when a shift lever is switched from a drive D to a neutral N; and performing a backward travel with the existing gear step by engaging a gear of the existing gear step with a clutch and applying a reverse torque of the motor to the transmission when the shift lever is switched from the neutral N to a reverse R.

Abstract: It is an object to provide an axle driving device that can change a deceleration ratio while obtaining a high deceleration ratio, and reduces noise during operation to have high ease of assembly and coolability. A carrier of a planet gear mechanism includes a first plate-like member, a second plate-like member, and a third plate-like member, and the third plate-like member includes the plate-like portion and the second plate-like member, a plurality of stays extended from the plate-like portion and connected to the first plate-like member, and a plurality of stays extended from the plate-like portion and connected to the second plate-like member.

Abstract: A shift-by-wire system includes an actuator, a detent plate, a detent spring, a control unit, and a display device. The control unit includes a first position learning unit, a second position learning unit, and a power-on determination unit. When the power-on determination unit determines that the power on is the post-instantaneous interruption on while the vehicle power is turned on, the first position learning unit learns the first reference position or the second position learning unit learns the second reference position, (i) in a case where the display device still displays the N-range after the target-range determination unit determines the target range to the R-range while the display device displays the N-range or (ii) in a case where the display device displays the N-range after the target-range determination unit determines the target range to the N-range while the display device displays the R-range.

Abstract: A method of operating a vehicle includes, responsive to a command to launch the vehicle and while the vehicle is in a first gear, determining, at a controller, a feedforward component including a target engine torque and a target bypass clutch torque, and a feedback component that is based on an error between the target converter slip and a measured converter slip and between the target wheel torque and a measured wheel torque. The method further includes changing a commanded engine torque and a commanded bypass clutch torque based on the feedforward component and the feedback component.

Abstract: A vehicle includes a step-ratio automatic transmission having clutches engageable to provide forward and reverse gears, an electric machine selectively coupled to the transmission, a main pump powered by the electric machine and supplying oil to actuate selected transmission clutches, a gear selector configured for selecting a transmission gear, and a controller configured to stop the electric machine when the gear selector selects park or neutral, to operate the electric machine in a speed control mode using a higher controller gain in response to the gear selector selecting forward or reverse while the electric machine is stopped until the electric machine and the main pump reach a first speed threshold to reduce engagement delay of at least one of the transmission clutches, and to operate the electric machine using a lower controller gain when the electric machine and the main pump exceed the first speed threshold.

Abstract: An oil pump control method for a DCT may include estimating line pressure, using a pressure-up model formed from a relationship between an oil pump driving current and a hydraulic pressure; stopping the oil pump when the line pressure estimated from the pressure-up model is equal to or higher than a predetermined upper limit hydraulic pressure; estimating a dropping line pressure from a first pressure-down model for a predetermined first reference time after stopping the oil pump on the basis of the line pressure estimated when the oil pump is stopped as an initial value; forming a second pressure-down model by opening a solenoid valve supplying hydraulic pressure to a non-drive side clutch, and estimating a line pressure from the second pressure-down model, and returning to the pressure-up step when the line pressure reaches predetermined lower limit hydraulic pressure or less.

Abstract: A control apparatus of a transmission includes the transmission that is configured to perform shifting operation with use of a control pressure derived from an actuating oil to be supplied to a hydraulic pressure unit. The control apparatus includes a hydraulic pressure supply source, a switcher, a control pressure adjusting valve, an abnormality detector, and a controller. The controller is configured to control the shifting operation of the transmission to keep a revolution speed of an engine, in an abnormal period in which an abnormality of the switcher is detected by the abnormality detector, at a value that is equal to or greater than an abnormal lower limit value. The abnormal lower limit value is higher than a normal lower limit value in a normal period. The normal period is prior to the detection of abnormality of the switcher by the abnormality detector.

Abstract: A fail-safe method for a parallel hybrid electric vehicle, having a motor connected between an engine and a transmission, and an engine clutch connected between the engine and the motor, includes: operating the engine using a starter and engaging the engine clutch; switching a first gearing map, which determines a change in a gear ratio of the transmission depending on a throttle vale opening rate regulated by an accelerator pedal and a vehicle speed obtained, to a second gearing map, which allows the gear ratio to change at a higher vehicle speed than that before the motor system failure occurs; and assisting a driving power of a first battery consumed by a low voltage DC-DC converter (LDC) with a counter electromotive power of the motor generated during operating of the engine in an engaged state of the engine clutch.

Abstract: A regenerative differential includes torque members, and a gear assembly that includes a primary gear set and a plurality of secondary gear sets. The primary gear set is configured to transfer torque between the secondary gear sets and first and second torque members. The first secondary gear set transfers torque between the primary gear set and a third torque member. The second secondary gear set transfers torque between the primary gear set and a fourth torque member. The gear assembly is configured to maintain a fixed relationship between torque member rotation velocities ?1, ?2, ?3, and ?4, such that ?3=ML?2+?L?1, ?4=MR?2+AR?1, ML and ?L are functions of a ratio of the first secondary gear set, and MR and ?R are functions of kR of a ratio of the second secondary gear set.

Abstract: A motor vehicle transmission, the transmission having an input shaft rotationally fixed to a second element of a first planetary gear set and rotationally fixable to a first element of a second planetary gear set by a first shift element. A first element of the first planetary gear set is rotationally fixable to a housing of the transmission by a second shift element and to the first element of the second planetary gear set by a third shift element. An output shaft of the transmission is rotationally fixed to a third element of the first planetary gear set and to a second element of the second planetary gear set. A third element of the second planetary gear set is rotationally fixable to the housing by a fourth shift element. Additionally, two elements of the first planetary gear set are rotationally fixable to each other by a fifth shift element.

Abstract: A return-to-neutral mechanism for a hydrostatic transmission configured to return a control member of a pump to neutral after the control member has been moved toward a forward or reverse position. The return-to-neutral mechanism includes a stop member mountable to a housing, a control arm for moving the control member, and a spring for engaging the control arm and stop member to bias and return the control arm to neutral after being released from forward or reverse positions. The stop member may have an opening for receiving a fastener for mounting to the housing, and the opening may be configured to permit adjustment of the stop member along at least two transverse directions to preload the spring at the neutral position. The control arm may have abutments for moving legs of the spring, and the abutments may have recessed and protruding portions for receiving and containing the spring legs.

Abstract: A method for operating a motor vehicle having a drive unit (1), a transmission (2), and a driven end (3), where the transmission (2) is an automatic gearbox connected between the driven end (3) and the drive unit (1), and where the transmission (2) has a plurality of shift elements (4). The method includes implementing a downshift from an actual gear into a target gear in the transmission (2) originating from a coasting condition of the motor vehicle by disengaging at least one previously engaged shift element (4) and engaging at least one previously disengaged shift element (4). Additionally, the method includes applying a brake torque at the driven end (3) by a vehicle brake (5), the brake torque depending on the thrust torque present at the driven end (3) before implementing the downshift.

Abstract: A method for controlling a shift-by-wire (SBW) transmission may include detecting whether a shut-down condition is met in a state in which a parking gear stage of a vehicle is released, when it is detected that the shut-down condition is met, starting to drive a parking release device of maintaining release of a parking gear on the basis of an oil pressure of a parking piston or an RPM of an engine, and controlling an ON/OFF duty ratio of electric power of driving the parking release device on the basis of oil pressure of the parking piston, after starting to drive the parking release device.

Abstract: A drive system of a hybrid vehicle including an internal combustion engine, a first motor-generator, a power transmission path, a power division mechanism, a second motor-generator, a one-way clutch, a mode change mechanism, and an electronic control unit having a microprocessor and memory. The microprocessor is configured to control the first motor-generator so as to reduce a reaction force acting on the first motor-generator at a time at which a state of the one-way clutch changes from an unlocked state to a locked state, when a drive mode is changed from an EV mode to a HV mode through a start mode by the mode change mechanism.

Abstract: A vehicle includes a transmission; a shift operation member configured to be operated by a rider; a manual shift driving force transmission mechanism which transmits an operation force generated by the rider's operation of the shift operation member, to the transmission, as a shift driving force; a transmission actuator; an automatic shift driving force transmission mechanism which transmits a driving force generated by the transmission actuator to the manual shift driving force transmission mechanism, as the shift driving force, and the automatic shift driving force transmission mechanism includes a one-direction transmission section which prevents transmission of an operation of the manual shift driving force transmission mechanism to the transmission actuator, the operation being caused by the rider's operation of the shift operation member, the one-direction transmission section being configured to transmit the driving force generated by the transmission actuator to the manual shift driving force transmis

Abstract: A control method of a continuously variable transmission includes supplying oil pressure to a secondary pulley oil chamber by a source pressure oil pump, and controlling a flow of oil into and from a primary pulley oil chamber by an electric oil pump arranged in an oil passage between the primary pulley oil chamber and the secondary pulley oil chamber. After start-up of the source pressure oil pump, an operation of the electric oil pump is restricted until the oil is filled in the oil passage on the secondary pulley oil chamber side of the electric oil pump. The operation of the electric oil pump is permitted when rotation speed of the electric oil pump reaches a predetermined rotation speed.

Abstract: A magnetic cycloid gear assembly includes an outer magnet drum comprising a plurality of outer drum magnets having a first number of magnetic pole pairs. The assembly also includes a first inner magnet drum comprising a first plurality of inner drum magnets having a second number of magnetic pole pairs. The assembly also includes a second inner magnet drum comprising a second plurality of inner drum magnets having a third number of magnetic pole pairs. Each of the first and second inner drums has an inner magnet drum axis that is offset from an outer magnet drum axis. The assembly further includes a plurality of drive mechanisms, each mechanism being operatively coupled to each of the first and second inner drums. The plurality of drive mechanisms is configured to drive each of the first and second inner magnet drums to revolve in an eccentric manner about the outer drum axis.

Abstract: A driving device includes a first one-way clutch OWC1 provided on a power transmission path between a driving source and a driven portion which becomes in an engaged state when rotational power in one direction of the driving source side is input to the driven portion side and becomes in a disengaged state when rotational power in the other direction of the driving source side is input to the driven portion side and which becomes in a disengaged state when rotational power in one direction of the driven portion side is input to the driving source side and becomes in an engaged state when rotational power in the other direction of the driven portion side is input to the driving source side, a connection/disconnection unit which is provided in parallel with the first one-way clutch OWC1 on the power transmission path, and a second one-way clutch OWC2 provided in parallel with the first one-way clutch OWC1 and in series with the connection/disconnection unit on the power transmission path which performs an opera

Abstract: An engine starting system for starting an engine promptly during propulsion without reducing a drive force. When a condition to crank the engine is satisfied during propulsion in a neutral stage, torque is applied to an input rotary element to crank the engine by reducing a rotational speed of a control rotary element by increasing a torque capacity of a first engagement device to utilize an inertial force of the free rotary element as a reaction force.

Abstract: A gearbox assembly for a gas turbine engine used in an aircraft having passive lubrication capabilities during wind milling includes a gearbox housing, a gear train assembly housed within the gearbox housing, a lubricant in the gearbox housing for lubricating the gear train assembly, and a first scavenge port formed in the gearbox housing. The first scavenge port is changeable between an open position and a closed position. Further, the first scavenge port remains in the open position during normal operation of the gas turbine engine to allow the lubricant to drain from the gearbox housing. Upon occurrence of a loss of lubricant pressure in the gearbox assembly, the first scavenge port is changed to the closed position to trap at least a portion of the lubricant in the gearbox housing. Thus, the trapped lubricant provides passive lubrication to the gear train assembly during the loss of lubricant pressure.