Abstract: A vehicle includes a clutch to couple a motor and transmission, and a controller that, in response to a regenerative braking request and a temperature being within a first range, partially capacitizes the clutch for regenerative torque transfer therethrough with slip, and in response to another regenerative braking request and the temperature being within a second range less than the first, fully capacitizes the clutch prior to regenerative torque transfer therethough to preclude slip.

Abstract: Systems and methods for improving hybrid vehicle cooling are presented. In one example, an electric pump may supply transmission fluid to a transmission and a driveline integrated starter/generator to cool, operate, and lubricate driveline components. The electric pump may be selectively operated to conserve energy and to supply driveline cooling when driveline cooling may be desirable.

Abstract: A vehicle includes a connector for coupling a battery in the vehicle to a load external to the vehicle. An energy management system includes a controller that is programmed to operate the battery in a vehicle according to a target state of charge range that is defined by upper and lower state of charge limits. In response to receiving a request to prepare for power generation at a destination prior to arriving at the destination, the controller increases the lower state of charge limit as the distance to the destination decreases. In response to the request, the battery is operated during the drive cycle to the destination so that the battery state of charge at the destination allows the battery to provide power to the external load for a predetermined period of time before an engine is started.

Abstract: A controller and control strategies minimize shift shock in a hybrid electric vehicle during a downshift during regenerative braking by maintaining the transmission input speed substantially linear when the transmission input speed is slowing. The controller and the control strategies control the regenerative braking torque during a downshift occurring during regenerative braking in such a way that the transmission input speed is maintained substantially linear when the transmission input speed is slowing during a torque phase of the downshift.

Abstract: A vehicle may include a transmission having an electric machine, an engine, and a controller. The engine may be selectively coupled with the transmission via a disconnect clutch. The controller may be programmed to, in response to an anticipated engine start request, command a disconnect clutch pre-stroke to couple the engine to the transmission prior to an actual engine start request while operating the vehicle in electric mode.

Abstract: A vehicle includes an engine, a transmission, a clutch, and a controller. The clutch is configured to couple the engine and transmission during engine starts. The controller is programmed to alter an engine start torque apply schedule for the clutch such that the actual engine start time is less than the upper threshold time for a next engine start event. The controller may be further programmed to, in response to the actual engine start time being less than a lower threshold time for the engine start event, alter the engine start torque apply schedule for the clutch such the actual engine start time is greater than the lower threshold time for a next engine start event.

Abstract: A vehicle may include a transmission having an electric machine, an engine, and a controller. The engine may be selectively coupled with the transmission via a disconnect clutch. The controller may be programmed to, in response to an anticipated engine start request, command a disconnect clutch pre-stroke to couple the engine to the transmission prior to an actual engine start request while operating the vehicle in electric mode.

Abstract: Systems and methods for operating a transmission of a hybrid vehicle's driveline are presented. In one example, the systems and methods estimate a driveline disconnect clutch stroke pressure and gain via extending a line from a non-zero driveline disconnect clutch torque capacity to a zero driveline disconnect clutch torque capacity.

Abstract: Systems and methods for operating a transmission of a hybrid vehicle's driveline are presented. In one example, the systems and methods estimate a driveline disconnect clutch stroke pressure and gain via extending a line from a non-zero driveline disconnect clutch torque capacity to a zero driveline disconnect clutch torque capacity.

Abstract: A vehicle includes an electric machine, a torque converter and damper, and a controller. The controller is programmed to operate the electric machine to apply a regenerative torque according to a deflection of the damper and a difference between a speed of the electric machine and an output speed of the torque converter.

Abstract: Systems and methods for operating a hybrid vehicle driveline that includes an engine and a motor are presented. In one example, the systems and methods include one or more control modes where engine and/or motor speed or torque is adjusted responsive to different control parameters during a vehicle launch from zero speed or a creep speed.

Abstract: Systems and methods for operating a hybrid vehicle driveline that includes an engine and a motor are presented. In one example, the systems and methods include one or more control modes where engine and/or motor speed or torque is adjusted responsive to different control parameters during a vehicle launch from zero speed or a creep speed.

Abstract: A vehicle includes a motive power source, a transmission, and a clutch system. The vehicle further includes a controller that causes the clutch system to generate a generally constant clutch pressure to mechanically couple the motive power source and transmission as a line pressure associated with the transmission varies.

Abstract: A powertrain comprising an engine, a motor, a disconnect clutch connected between the engine and the motor, and a transmission. The transmission is connected to the motor by a torque converter and lock-up clutch and selectively and indirectly connected to the engine by the disconnect clutch. A controller receives an engine torque output signal and reduces the torque output of the engine to the clutch capacity limit value. A system and a method are also provided for controlling a powertrain for a hybrid vehicle.

Abstract: A vehicle includes a connector for coupling a battery in the vehicle to a load external to the vehicle. An energy management system includes a controller that is programmed to operate the battery in a vehicle according to a target state of charge range that is defined by upper and lower state of charge limits. In response to receiving a request to prepare for power generation at a destination prior to arriving at the destination, the controller increases the lower state of charge limit as the distance to the destination decreases. In response to the request, the battery is operated during the drive cycle to the destination so that the battery state of charge at the destination allows the battery to provide power to the external load for a predetermined period of time before an engine is started.

Abstract: A vehicle including a powertrain having an electric machine, an engine, a traction battery, and a controller are provided. The controller may be programmed to, in response to a state of charge of the traction battery being less than a threshold while the traction battery is powering a device external to the vehicle, operate the powertrain to charge the traction battery at a rate based on an ambient temperature irrespective of an electric load requested by the device.

Abstract: A vehicle includes an engine and electric machine connected to a planetary gear, a one-way clutch, and a controller. The one-way clutch transfers torque from the planetary gear to an overdrive gear. The controller, in response to a condition requiring disengagement of the one-way clutch, increases a torque of the electric machine based on a torque command for the electric machine and the torque transferred from the planetary gear to the overdrive gear.

Abstract: An exemplary clutch device of an electrified vehicle includes a first member having a plurality of lugs about an axis, and a second member including a plurality of apertures. The plurality of lugs are selectively moveable axially into corresponding apertures to couple together rotation of the first member and the second member. Interfaces between the first member and the second member when under positive torque are angled differently than interfaces between the first member and the second member when under negative torque.

Abstract: A vehicle includes a power source, such as an engine, an electric machine, or combination thereof. A torque converter is selectively coupled to the power source such that drive torque can be altered before being distributed into a transmission of the vehicle. A torque converter bypass clutch enables torque from the power source to selectively transmit directly to the transmission with little or no torque altering provided by the torque converter. At least one controller in the vehicle is in communication with a storage device. The controller sends road condition data to the storage device regarding a road segment. During a subsequent drive to or over the road segment, the controller receives the road condition data and enables the torque converter bypass clutch to slip to dampen driveline disturbances when the vehicle passes over the road segment.

Abstract: A hybrid vehicle powertrain includes an internal combustion engine, first and second electric machines, traction wheels, and an output shaft having meshing gears configured to establish a final drive ratio between the output shaft and the traction wheels. The powertrain additionally includes a first mechanical linkage and a second mechanical linkage. The first mechanical linkage is configured to selectively transmit engine torque to the fraction wheels and selectively transmit electric machine torque to the traction wheels. The second mechanical linkage is configured to selectively transmit engine torque to the traction wheels. When transmitting engine torque to the wheels, the second mechanical linkage defines a fixed overdrive speed relationship between the engine and the fraction wheels.