Systems and methods for operating a vehicle that includes a manual transmission are presented. In one example, a speed rate of change of a driveline torque source is adjusted during shifting gears of the manual transmission responsive to a rate of release of a clutch pedal. The driveline torque source rotational speed adjustment aligns rotational speeds of driveline components.

A method for allocating power between electric machines in a powertrain of an electric vehicle is described. The electric vehicle includes a gearbox having an input shaft and an output shaft configured to transmit a first torque to the wheels of the vehicle, a first electric machine having an output shaft coupled to the input shaft of the gearbox, and a second electric machine configured to supply a second torque to wheels of the vehicle. The method comprises: prior to a gear change of the first electric machine, allocating power to the first and second electric machines according to a first power ratio; in response of an intended gear change of the first electric machine, allocating power to the first and second electric machines according to a second power ratio.

A vehicle control apparatus includes: a transmission shifting control portion configured to implement a shifting action of a step-variable transmission, by controlling a releasing action of a releasing coupling device and an engaging action of an engaging coupling device; a torque control portion configured, during the shifting action of the step-variable transmission, to implement a feedback control to control an input torque inputted to the step-variable transmission, such that a value representing a state of a rotary motion of an input rotary member of the step-variable transmission coincides with a target value dependent on a degree of progress of the shifting action; and a backup control portion configured, when it is determined that the drive wheels are slipped, to inhibit the feedback control, and to compensate a transmitted torque to be transmitted through an initiative coupling device, such that the shifting action is facilitated by compensation of the transmitted torque.

A controller is provided so as to control, when an electric vehicle (EV) mode is selected, a belt clamping pressure on the basis of discharged oil from a main oil pump which is driven by a motor generator. The controller is provided for a hybrid vehicle and is configured to perform control such that when the vehicle is stopped in the EV mode and a creep cut condition which does not require creep torque from the motor generator is met, a first motor idling rotation speed is set as a motor rotation speed. When the vehicle is stopped in the EV mode and a standby learning control completes learning of a zero-point oil pressure command value, the controller reduces a rotation speed of the motor generator to a second motor idling rotation speed which is lower than the first motor idling rotation speed.

A control apparatus for a hybrid vehicle provided with an engine, a differential mechanism having a first rotary element to which the engine is operatively connected, a second rotary element to which a first motor/generator is operatively connected, and a third rotary element to which an intermediate power transmitting member is connected, a second motor/generator operatively connected to the intermediate power transmitting member, and an automatic transmission which constitutes a part of a power transmitting path between the intermediate power transmitting member and drive wheels and in which a shifting action is performed by selective engagement of a plurality of coupling devices, the control apparatus comprising: a hybrid control portion for controlling an output torque of the first motor/generator and an output torque of the second motor/generator during the shifting action of the automatic transmission on the basis of an output torque of the engine and a transmitted torque of the coupling devices, such that an angular acceleration value of the second motor/generator and an angular acceleration value of the engine coincide with respective target values; a limited state determining portion for determining whether the output torque of the first motor/generator is in a limited state of being limited lower than a predetermined load capable of ensuring a shift-progressing torque necessary for progress of a power-on shift-down action of the automatic transmission; and an output limiting portion for limiting the output torque of the engine to a predetermined torque or less if the output torque of the first motor/generator is in the limited state during the power-on shift-down action of the automatic transmission.

A vehicle control apparatus includes: a transmission shifting control portion configured to implement a shifting action of a step-variable transmission by controlling a releasing coupling device and an engaging coupling device; a hybrid control portion configured to control an output torque of a first motor/generator and an output torque of a second motor/generator, based on an output torque of an engine and a transmitted torque to be transmitted through an initiative coupling device, such that a rotational acceleration value of the second motor/generator and a rotational acceleration value of the engine are changed along respective target trajectories during the shifting action; and a target-trajectory setting portion configured to set the target trajectories, based on a maximum charging amount of an electric power that is chargeable to an electric power storage device and a maximum discharging amount of the electric power that is dischargeable from the electric power storage device.

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.

A vehicle regenerative speed control device is provided for suppressing undershooting, in which an actual transmission input rotational speed falls below a lower-limit rotational speed, when decreasing a transmission input rotational speed based on a request for a decrease in the regeneration amount during regenerative speed control. The vehicle regenerative speed control device includes a controller which performs a regenerative speed control for downshifting a continuously variable transmission to a low gear ratio side and increasing a rotational speed of a transmission input shaft to which a motor generator is connected when there is a request for an increase in the regeneration amount while decelerating.

The present invention relates to a method to control a hybrid powertrain, comprising a combustion engine, an electric machine, a gearbox with input shaft and output shaft, wherein the combustion engine and the electric machine are connected to the input shaft. The method comprises the following steps: a) disconnecting the combustion engine from the input shaft with a coupling device, b) engaging a starting gear in the gearbox, which starting gear is higher than the gear at which the combustion engine's torque at idling speed is able to operate the input shaft, c) generating a torque in the input shaft with the electric machine, d) accelerating the electric machine, and e) connecting the combustion engine to the input shaft with the coupling device when the electric machine has reached substantially the same rotational speed as the combustion engine. The invention also relates to a hybrid powertrain and a vehicle.

A vehicle regenerative speed control device is provided that includes a controller which performs a regenerative speed control for downshifting a belt-type continuously variable transmission to the low gear ratio side and increasing a rotational speed of a transmission input shaft to which a motor generator is connected when there is a request for an increase in the regeneration amount while decelerating. The controller also imposes the limitation of staying within a Pri end command rotational speed change rate for the Pri end command rotational speed when performing a regenerative speed control for increasing the Pri end command rotational speed based on a braking operation in a brake switching region for switching from regenerative braking to hydraulic braking due to a decrease in vehicle speed.