Disclosed is a configurable seamless shift gearbox (100, 506). Configurable seamless shift gearbox comprises input shaft (102, 508) and output shaft (104, 510); gear arrangement (106) engaged between input and output shafts, configured to drive torque from input to output shaft. Gear arrangement comprises first gear member (202), second gear member (108), third gear member (118), and fourth gear member (110A, 110B) that rotationally arranges third gear member thereon; first clutch (112) configured to variably engage and disengage with fourth gear member to transfer input torque from input shaft to gear arrangement; and second clutch (114) configured to variably engage and disengage with second gear member to transfer input torque from gear arrangement to output shaft, wherein first and second clutch selectively engage and disengage with fourth and second gear member, respectively, at same time to enable variable gear ratios for providing a seamless torque from input to output shaft.

Disclosed is a configurable seamless shift gearbox (100, 506). Configurable seamless shift gearbox comprises input shaft (102, 508) and output shaft (104, 510); gear arrangement (106) engaged between input and output shafts, configured to drive torque from input to output shaft. Gear arrangement comprises first gear member (202), second gear member (108), third gear member (118), and fourth gear member (110A, 110B) that rotationally arranges third gear member thereon; first clutch (112) configured to variably engage and disengage with fourth gear member to transfer input torque from input shaft to gear arrangement; and second clutch (114) configured to variably engage and disengage with second gear member to transfer input torque from gear arrangement to output shaft, wherein first and second clutch selectively engage and disengage with fourth and second gear member, respectively, at same time to enable variable gear ratios for providing a seamless torque from input to output shaft.

The present invention provides a shift control method implemented in a vehicle equipped with an automatic transmission for controlling an input shaft rotation speed to a target input shaft rotation speed during a shift. The method includes setting of a basic target synchronization rotation speed that is a basic target value of the input shaft rotation speed during the shift, and setting of a corrected target input shaft rotation speed as the target input shaft rotation speed when the shift is a downshift without a requirement for a driving force of the vehicle, The corrected target input shaft rotation speed is obtained by decreasingly correcting the basic target synchronization rotation speed. Further, a decreasing correction amount of the basic target synchronization rotation speed is set so as to become larger as a deceleration of the vehicle becomes larger.

The present invention provides a shift control method implemented in a vehicle equipped with an automatic transmission for controlling an input shaft rotation speed to a target input shaft rotation speed during a shift. The method includes setting of a basic target synchronization rotation speed that is a basic target value of the input shaft rotation speed during the shift, and setting of a corrected target input shaft rotation speed as the target input shaft rotation speed when the shift is a downshift without a requirement for a driving force of the vehicle, The corrected target input shaft rotation speed is obtained by decreasingly correcting the basic target synchronization rotation speed. Further, a decreasing correction amount of the basic target synchronization rotation speed is set so as to become larger as a deceleration of the vehicle becomes larger.

The power supply device includes a low voltage battery, a high voltage battery, a starter generator, a DC-DC converter, a changeover switch, and a controller. When an abnormality or a failure has occurred in the DC-DC converter, the controller controls the changeover switch to connect the starter generator to the other battery without via the DC-DC converter and controls the output of the starter generator corresponding to the connected other battery.

An apparatus and a method for controlling operation of a vehicle includes a controller having a processor and a tangible, non-transitory memory. The vehicle includes a park assembly with a park actuator motor having an actuator shaft. The vehicle has a park mode and an out-of-park mode. The controller is configured to determine if the park actuator motor has reached an out-of-park position when a shift command to the out-of-park mode is received. The controller is configured to obtain and store at least one dynamic parameter associated with the park actuator motor prior to the detent member reaching the out-of-park position. The method includes determining a load factor based on the dynamic parameter over time when at least one of a predefined time threshold and a predefined motor position threshold is reached. Operation of the vehicle is controlled based at least partially on the load factor.

An apparatus and a method for controlling operation of a vehicle includes a controller having a processor and a tangible, non-transitory memory. The vehicle includes a park assembly with a park actuator motor having an actuator shaft. The vehicle has a park mode and an out-of-park mode. The controller is configured to determine if the park actuator motor has reached an out-of-park position when a shift command to the out-of-park mode is received. The controller is configured to obtain and store at least one dynamic parameter associated with the park actuator motor prior to the detent member reaching the out-of-park position. The method includes determining a load factor based on the dynamic parameter over time when at least one of a predefined time threshold and a predefined motor position threshold is reached. Operation of the vehicle is controlled based at least partially on the load factor.

A system and method for controlling a hybrid vehicle having an engine, a traction motor, and an automatic step-ratio transmission having a plurality of selectable discrete gear ratios, a torque converter, and sharing a common cooling fluid or oil with the traction motor, include a controller configured to shift the automatic step-ratio transmission to neutral in response to vehicle speed being below a threshold with the engine idling while temperatures of at least two of: the traction battery, the electric machine, and the transmission are above associated thresholds to reduce heat generation by the torque converter due to oil shear with the torque converter stalled. The controller may shift the transmission to drive in response to release of a brake pedal. A neutral shift may also be performed in response to high-voltage accessory loads or on-board generator loads exceeding a threshold.

A driver is enabled to, even if a range selected by the driver and an actual range of the vehicle are different from each other, correctly recognize the actual range of the vehicle without occurrence of disagreement between an indicated range and the actual range of the vehicle. A display means is capable of indicating a range irrespective of a rotation operation of a shift member, and a range of the vehicle is capable of being switched to the range irrespective of the rotation operation of the shift member; and an instruction to the display means and an instruction to switch the range of the vehicle are provided from either one of first control means for indication control or second control means for vehicle range switching control.

A driver is enabled to, even if a range selected by the driver and an actual range of the vehicle are different from each other, correctly recognize the actual range of the vehicle without occurrence of disagreement between an indicated range and the actual range of the vehicle. A display means is capable of indicating a range irrespective of a rotation operation of a shift member, and a range of the vehicle is capable of being switched to the range irrespective of the rotation operation of the shift member; and an instruction to the display means and an instruction to switch the range of the vehicle are provided from either one of first control means for indication control or second control means for vehicle range switching control.