Disclosed is a method of controlling a hybrid electric vehicle having a transmission, an engine, and first and second drive motors. The method includes: performing charging through the first drive motor using the power of the engine by engaging an engine clutch disposed between the engine and the first drive motor while a vehicle is stopped with the gear stage shifted to the parking (P) range; turning off the engine and controlling the clutch of the transmission to enter an open state when the gear stage is shifted to the driving (D) range; and commencing movement of the vehicle using the second drive motor alone or using at least one of the first drive motor or the engine together with the second drive motor based on at least one of requested torque, available torque of the second drive motor, or the speed of the first drive motor.

The present disclosure relates to a hybrid vehicle control device, a system including the same, and a method thereof. The hybrid vehicle control device according to an embodiment of the present disclosure includes a processor and storage. The processor sets a target engine speed and determines presence or absence of a kick down shift based on the vehicle driving situation, and performs engine clutch engagement control according to a result of the kick down shift. The storage stores the vehicle driving situation and a result of the determination of the presence or absence of the kick down shift.

A method of controlling the engine of a vehicle having a stop-in-gear (SIG) stop-start system includes: a control module determining that a brake is being applied, based on an output from a brake sensor, and that a transmission is in an in-gear position, based on an output from a transmission sensor; and, while the brake is applied and the transmission is in an in-gear position, the control module causing the engine to start in response to detecting movement of a clutch pedal towards a released position based on an output from a clutch pedal sensor.

A transmission (2) of a motor vehicle includes a first input shaft (7) for a first prime mover (3), a second input shaft (8) for a second prime mover (4), and an output shaft (9). A first sub-transmission (5) includes the first input shaft (7) and a countershaft (11) coupled to the first input shaft (7) via a constant ratio. Gearwheels (16, 17, 18) are arranged on the countershaft (11), which mesh exclusively into gearwheels (12, 13, 15) arranged coaxially to the first input shaft (7). At least some of these gearwheels (14, 15) mesh into gearwheels (20, 21) arranged on the output shaft (9). Shift elements (A, B, C, D) are associated with the first input shaft (7) as well as with the countershaft (11), which provide either a gear with a first number of instances of gearwheel meshing or a winding-path gear with a second number of instances of gearwheel meshing. A second sub-transmission (6) includes the second input shaft (8) and is designed as a planetary transmission. A ring gear (22) forms the second input shaft (8) of the second sub-transmission (6). A carrier (23) is permanently coupled to the output shaft (9) and to a gearwheel (18) arranged on the countershaft (11). Shift elements (F, E) are associated with the planetary transmission, via which, a sun gear (24) is fixedly connectable to the housing or the planetary transmission is bringable into direct drive.

This vehicle transmission system includes a transmission (21) in which a gear is shifted by an operation of a driver of a vehicle (1), a clutch device (26) that is disposed in a motion transfer path between the transmission (21) and an engine (13) of the vehicle (1), and is disconnected and connected by an action of a clutch actuator (50), and a clutch control unit (61) that is configured to control disconnection and connection of the clutch device (26) by the clutch actuator (50). In a case where the vehicle (1) is started with a gear position of the transmission (21) located at or above a gear that is set in advance, and a vehicle speed (V) is less than or no higher than a set value (v2) that is set in advance, the clutch control unit (61) transitions to clutch capacity-limiting control in which a clutch capacity is reduced below that during normal clutch control.

An ECU executes processing including a step of counting up a duration Ntime when a Ready-On state is brought, and a shift position is an N position, a step of counting up a duration Not_Ntime when the duration Ntime is equal to or greater than a threshold value A, the duration Ntime is greater than a threshold value C, and the shift position is other than the N position, a step of resetting the duration Ntime and the duration Not_Ntime to initial values in a case where the duration Not_Ntime is greater than a threshold value D, and a step of executing warning processing when the duration Ntime is greater than the threshold value A.

System, methods, and other embodiments described herein relate to delaying a start of an internal combustion engine (“ICE”) in a hybrid vehicle. In one embodiment, a method includes identifying a stopping location, a regenerative braking event that assists in stopping the hybrid vehicle at the stopping location, and an actual energy value based on a regenerative braking energy generated during the regenerative braking event. The method includes determining an estimated energy value, based on a predicted regenerative braking energy from a predicted braking event, that causes the hybrid vehicle to stop at the stopping location. The method includes determining an energy savings value based, at least in part, on a difference between the actual energy value and the estimated energy value. The method includes, responsive to the ICE being off, delaying the start of the ICE based, at least in part, on the energy savings.

A method and a system for a vehicle comprising: one or more power sources including at least one electrical machine; and a drivetrain for transferring torque between the one or more power sources and at least one drive wheel of the vehicle. The method comprises: controlling, when no positive drive torque (T.sub.drive) is transferred from the drivetrain to the at least one drive wheel, the at least one electrical machine to provide a backlash torque (T.sub.backlash) to the drivetrain, the backlash torque (T.sub.backlash) having a controlled value for turning the drivetrain if there is a backlash present in the drivetrain.

A method for controlling an electric drive unit (EDU) having a motor-driven torque converter includes receiving a request signal indicative of a requested output torque of the EDU, and operating the motor at a target motor speed using the requested output torque. The target motor speed minimizes system losses while achieving the requested output torque. When the requested output torque remains below a calibrated threshold and a turbine speed is less than a corner speed of the motor, a torque converter clutch (TCC) transitions to or remains in a locked state. The controller commands the TCC to transition to an unlocked state to reach the target motor speed, thereby selectively enabling torque multiplication. A powertrain system includes a driven load and the EDU. A computer readable storage medium may include executable instructions for performing the method.

The disclosure generally pertains to systems and methods for providing a vehicle occupant preparation system for certain acceleration modes. In an example method, sensor data associated with one or more sensors of the vehicle may be generated when a vehicle is in an acceleration mode. Subsequently, an orientation of an occupant in the vehicle relative to a seat or other structure within an interior of the vehicle may be determined using the sensor data. The orientation of the occupant may comprise at least a position of a head of the occupant or a direction the head of the occupant is facing. It may be determined that the orientation of the occupant is not within a predetermined orientation threshold. A notification associated with the orientation of the occupant may then be presented. In some instances, a performance parameter of the vehicle may be adjusted.