Abstract: A selection module selects a gear ratio for a transmission, a turbine speed for a torque converter, and a torque request for an engine. A fueling determination module determines a first fueling rate based on a first cylinder firing fraction, the torque request, and an engine speed and determines a second fueling rate based on a second cylinder firing fraction, the torque request, and the engine speed. A mapping module selects one of the first and second cylinder firing fractions based on a comparison of the first and second fueling rates and stores the selected one of the first and second cylinder firing fractions in an entry of a mapping corresponding to the gear ratio, the turbine speed, and the torque request.

Abstract: A wedge clutch, including: an inner hub; an outer race including an axially extending portion; and a plurality of wedge plates radially located between the inner hub and the axially extending portion. In a closed position for the clutch, the plurality of wedges is non-rotatably connected to the inner hub and the axially extending portion. In an open position for the clutch: the plurality of wedge plates is rotatable with respect to the outer race; each wedge plate is separated, in a radial direction, from the axially extending portion by a respective first radial distance; and the respective first radial distance for said each wedge plate is different from the respective first radial distance for each remaining wedge plate in the plurality of wedge plates.

Abstract: A flap type electronic automatic transmission lever control method may include a step of turning on a start-up of a vehicle by control unit, a step of detecting a touch by a transmission stage recognition sensor, a step of detecting a touch by forward or backward rotation recognition sensor, a step of detecting the touch by a transmission stage recognition sensor when the forward rotation recognition sensor detects the touch, or detecting the touch by a transmission stage recognition sensor when the backward rotation recognition sensor detects the touch, a step of rotating the transmission stage flap and the upper transmission stage flap forward or rotating the transmission stage flap and the lower transmission stage flap backward by a step motor, a step of outputting transmission signal of the transmission stage corresponding to upper or lower transmission stage flap by the control unit, and a step of turning OFF the start-up.

Abstract: A vehicle includes an engine, dual-clutch transmission (DCT), and controller. The controller executes a method to control a requested change-of-mind shift of the DCT to a second desired gear state. The requested shift is initiated after a prior-requested but not yet fully-executed shift of the DCT to a first desired gear state. The controller detects the requested shift, identifies the second desired gear state, and aborts the prior-requested shift immediately upon identifying the second desired gear state. The controller also shifts the DCT to the second desired gear state using a calibrated shift profile corresponding to the detected shift. The calibrated shift profile describes required oncoming and offgoing clutch torques needed for achieving the second desired gear state. Engine speed control may be used to synchronize engine and input shaft speeds.

Abstract: Systems and methods for improving gear shifting of a step-ratio automatic transmission in a hybrid vehicle are presented. The systems and methods may provide for adjusting torque capacity of one or more driveline clutches to reduce driveline torque disturbances that may be related to driveline inertia torque during transmission gear shifting.

Abstract: The torque assist system of the present invention includes a torque assist shaft having a first terminating part connected to the input shaft, an outer shaft and an inner shaft rotating independently from the outer shaft; a planetary gear set mounted on the inner shaft exposed to a second terminating part of the torque assist shaft; a clutch being disposed adjacent to the planetary gear set and operated by an external force; and an input gear mounted on the exposed inner shaft of the torque assist shaft and connected to the planetary gear set by the clutch to transmit power to an output gear mounted on the output shaft of the vehicle transmission.

Abstract: Examples are provided that describe a cycloid transmission with an adjustable ring. An example cycloid transmission includes a disc and a motor shaft attached to the disc. The motor shaft is capable of rotating the disc around an outer ring of rollers. The outer ring of rollers surrounds the disc. As the disc is rotated, contact is made between the disc and the outer ring of rollers. A cycloid transmission also comprises an adjustable ring that is interposed between the motor shaft and the disc. A circumference of the adjustable ring can be adjusted in order to cause expansion of a radius of the disc. This expansion will result in increased contact of the disc with the outer ring of rollers and thereby lower backlash during rotation of the disc.

Abstract: Systems and methods for improving hybrid vehicle torque control are presented. The system and methods included may estimate driveline torque via springs of a dual mass flywheel. The estimated driveline torque may provide feedback for adjusting operation of a driveline disconnect clutch and/or engine torque.

Abstract: A dynamic damper disposed between a piston of a lock-up device and a turbine hub of a fluid type power transmission device includes a pair of plates into which a torque is inputted and that is allowed to be coupled to the turbine hub, a hub flange, an inertia member fixed to the hub flange, a torsion spring, and a hysteresis torque generating mechanism. The hub flange is disposed between the pair of plates while being rotatable relative to the pair of plates. The torsion spring elastically couples the pair of plates and the hub flange. The hysteresis torque generating mechanism is disposed on an inner peripheral side of the hub flange while being disposed between the pair of plates, and is configured to generate a variable hysteresis torque between both plates and the hub flange.

Abstract: A driving device for hybrid vehicle provided with an engine, first and second electrical machines, a first and second differential mechanisms, and a switching device in which the first and second differential mechanisms are connected to each other through output rotational elements. The engine and the first and second rotating electrical machines are connected to different rotational elements out of rotational elements of the first and second differential mechanisms. The switching device switches between an independent mode and a four-element mode. In the four element mode, rotational elements connected to the engine, first and second rotating electrical machines, and the output rotational elements differentially rotate, and in an alignment chart in the four-element mode, any one of rotational elements connected to the first and second rotating electrical machines is located between a rotational element connected to the engine and the output rotational elements.

Abstract: A control device of a vehicle including an engine, an electric motor, and a clutch configured to achieve a mechanically directly-coupled state of a power transmission path between the engine/the electric motor and drive wheels, the control device causing the clutch to be slip-engaged or released when the engine is started during motor running in which only the electric motor is used as a drive force source for running with the clutch engaged, the control device being configured such that when the clutch is engaged during the motor running, an engagement pressure is made lower than an engagement pressure when the clutch is engaged during engine running in which at least the engine is used as a drive force source for running, and in the case of running with the clutch engaged, the engagement pressure of the clutch is constantly adjusted based on output torque of the electric motor during the motor running, while the engagement pressure of the clutch is not adjusted during the engine running.

Abstract: A vehicle control device for controlling a vehicle including a first power transmission mechanism arranged between a drive source and a drive wheel, and a second power transmission mechanism which is arranged in series with the first power transmission mechanism and which changes a speed ratio between an input shaft and an output shaft, includes slip detection means configured to detect whether or not a slip occurs in the first power transmission mechanism, and shift means configured to reduce the slip by shifting the second power transmission mechanism in a case where occurrence of the slip is detected by the slip detection means.

Abstract: A hydraulic hybrid system for implementation in a machine. The system includes a hydraulic system, an energy source, an output, and a transmission. The hydraulic system includes a primary hydraulic pump/motor (primary motor) that is hydraulically coupled to a reservoir and a variable-volume accumulator assembly. The primary motor is configured to charge an accumulator of the variable-volume accumulator assembly with a working fluid when mechanically driven. The storage volume of variable-volume accumulator assembly varies based on a kinetic output condition of the machine. The energy source is configured to produce primary kinetic energy. The output is configured to receive at least a first portion of the primary kinetic energy. The transmission is coupled between the energy source and the output and selectively coupled to the primary motor. The transmission is configured to mechanically drive the primary motor using a second portion of the primary kinetic energy.

Abstract: Methods and systems are provided for slowly rotating an engine, unfueled, via a motor prior to an imminent engine restart to heat the engine. By rotating the engine so that heat generated in the compression stroke of a cylinder can be transferred to cylinder walls, thereby expediting engine warm-up. By warming the engine before a restart, particulate emissions generated during an engine cold-start due to direct injection of fuel can be reduced.

Abstract: A system and computer program product are provided for utilizing target of opportunity to perform at least one special operation while a removable storage medium is mounted within a data storage drive for another purpose. The system comprises a tape library and a tape drive coupled to the tape library. The tape library receives a command to mount a tape cartridge in the tape drive. If it is determined by the tape library that at least one special operation may be performed, then tape library has recognized that a target of opportunity exists. In response to determining that at least one special operation may be performed, the tape library sends a first notification that the tape drive is to remain in a not ready state. The tape library mounts the tape cartridge in the tape drive after determining that at least one special operation may be performed.

Abstract: Under a specified condition where a torque converter is kept in a lockup state to prolong the fuel-cutoff time, because of vehicle coasting with an accelerator opening APO=0, a downshift command is generated and then an automatic transmission causes a reengagement downshift by a drop in a release-side clutch hydraulic pressure Poff and a rise in an engagement-side clutch hydraulic pressure Pon. During the reengagement downshift, the engagement-side clutch hydraulic pressure Pon is reduced from a high lockup-ON hydraulic pressure to a low lockup-OFF hydraulic pressure after the time when the lockup is predicted to be released, thus preventing a torque drawing-in tendency of transmission output torque, which may occur at the time of the beginning of the inertia phase, from increasing, and also reducing in the width of a subsequent change in vehicle deceleration G, and consequently enhancing the shift quality.

Abstract: A diagnostic device for a shift control actuator of a CVT includes: a variator; a chamber that is filled with and discharges hydraulic fluid for an upshift and a downshift, respectively; an upshift control valve for filling hydraulic fluid into the chamber; a downshift control valve for discharging hydraulic fluid from the chamber; a fail-safe valve for suspending the discharge of hydraulic fluid from the chamber when the upshift control valve is in a filling state; actuators for driving the upshift and downshift control valves; and a shift controller for controlling the actuators so that an actual shift ratio approaches a target ratio. The shift controller determines the state of the actuators with the information on the actual shift ratio when the controller instructs a downshift or an upshift.

Abstract: A power split transmission (LG) of vehicle a traction drive (F) includes a continuously variable transmission (G) and a summing transmission (SG). The continuously variable transmission (G) has a primary unit (P) and a secondary unit (S) driven by the primary unit (P). The primary unit (P) has a driveshaft (TW1) connected, directly and without the interposition of a clutch device, with the sun gear (SR) of the summing transmission (SG). The secondary unit (S) has a driveshaft (TW2) connected, without the interposition of a clutch device, with a ring gear (HR) or a planetary carrier (PT) of the summing transmission (SG). The planetary carrier (PT) or the ring gear (HR) of the summing transmission (SG) form an output element of the summing transmission (SG), which is in a driving connection with the wheel drive.

Abstract: A multi-positional dog clutch selectively engageable with a transmission is disclosed. The dog clutch includes a shift fork, a dog clutch carrier, a common member, and first and second dog clutch sliding members. The transmission includes first and second fixed members. The first dog clutch sliding member is configured to engage with and disengage from the first fixed member. The second dog clutch sliding member is configured to engage with and disengage from the second fixed member. The dog clutch carrier is movable to (i) a first position in which the first dog clutch sliding member is engaged with the first fixed member, (ii) a second position in which the second dog clutch sliding member is engaged with the second fixed member, and (iii) a third position in which the first dog clutch sliding member is engaged with the first fixed member and the second dog clutch sliding member is engaged with the second fixed member.

Abstract: A two-way clutch includes an outer race having a cam section in an inner periphery, an inner race that is separated in an inside diameter direction with respect to the outer race, and is disposed concentrically to be relatively rotatable, a torque transmission member that is disposed between the outer race and the inner race, and transmits torque, a cage that is capable of engaging with the torque transmission member and is movable in a circumferential direction, a drag strip that is supported by the cage, and a switching mechanism that can cause the two-way clutch to take at least a state locked in two directions by causing the drag strip to slide onto the inner race.