Methods and system are described for changing a driveline gear range from a higher gear range to a lower gear range. The driveline may include two electric machines and four clutches in a four wheel drive configuration. The methods and systems permit a driveline to change from a higher gear range to a lower gear range without stopping a vehicle.

Methods and system are described for changing a driveline gear range from a lower gear range to a higher gear range. The driveline may include two electric machines and four clutches in a four wheel drive configuration. The methods and systems permit a driveline to change from a lower gear range to a higher gear range in a way that may reduce torque disturbances that may result from gear lash.

An apparatus and a method for controlling a transmission of a vehicle may include a determining device configured to determine whether to perform a front-vehicle-based deceleration following control based on information on the vehicle and information on the front vehicle when coasting of the vehicle is started, a calculating device configured to determine a target speed of the vehicle and a target distance based on a position, a speed, and a moving distance of the front vehicle, when the front-vehicle-based deceleration following control is determined to be performed, a gearshifting stage deciding device configured to decide a final gearshifting stage of the transmission based on the determined target speed and the target distance by configuring a deceleration profile for each gearshifting stage of the transmission, and a controller to control the transmission based on the final gearshifting stage.

An electronic module (1) includes a first electronic submodule (2) and at least one further electronic submodule (3, 4). The first electronic submodule (2) and the at least one further electronic submodule (3, 4) are electrically conductively connected to each other with an electrical conductor (5, 6), which is reversibly deformable, at least in sections. The first electronic submodule (2), the at least one further electronic submodule (3, 4), and the electrical conductor (5, 6) are encased in a fluid-tight manner with a casing (15), which is reversibly deformable, at least in sections. An actuator device includes at least one mechanical module and the electronic module (1). A method for manufacturing such an actuator device is also provided.

Provided is an automotive transmission control apparatus. The automotive transmission control apparatus includes: a housing; a main shaft provided in the housing; a driving unit coupled to the main shaft and configured to be driven based on a signal for controlling a gear position of a transmission; a reduction unit housed within the driving unit; and an output unit to receive a rotational force of the reduction unit and output the rotational force with a reduced rotational speed. The reduction unit includes: an inner gear member coupled to the main shaft and including a first gear portion and a second gear portion; and an outer gear member fixed to the housing and including a first receiving gear portion engaged with the first gear portion. Further, the output unit includes a second receiving gear portion engaged with the second gear portion.

An apparatus and a method for controlling a transmission of a vehicle may include a determining device configured to determine whether to perform a front-vehicle-based deceleration following control based on information on the vehicle and information on the front vehicle when coasting of the vehicle is started, a calculating device configured to determine a target speed of the vehicle and a target distance based on a position, a speed, and a moving distance of the front vehicle, when the front-vehicle-based deceleration following control is determined to be performed, a gearshifting stage deciding device configured to decide a final gearshifting stage of the transmission based on the determined target speed and the target distance by configuring a deceleration profile for each gearshifting stage of the transmission, and a controller to control the transmission based on the final gearshifting stage.

A CPU sets a gear ratio, which is an action, on the basis of an accelerator operation amount, a vehicle speed, a gradient, a curvature, and a current gear ratio, until a predetermined amount of time elapses. The CPU operates a transmission in accordance with the set gear ratio and obtains a rotation speed NE of a crankshaft at that time. When the predetermined amount of time has elapsed, the CPU updates an action value function by providing a reward in accordance with whether the number of times of switching the rotation speed NE or the gear ratio meets a standard.

A method of controlling a hybrid power train may include: driving a first input shaft connected to a second motor-generator by the second motor-generator to synchronize a speed of a driven gear of a target gear position with a speed of an output shaft; moving a sleeve to directly connect the second input shaft, the output shaft, and the driven gear of the target gear position; decreasing torque of the first motor-generator and increasing torque of the second motor-generator to converge torque transferred from the second motor-generator to the output shaft, to torque of the output shaft; moving the sleeve to release the second input shaft and maintain only the output shaft and the driven gear; and increasing torque of an engine and decreasing the torque of the second motor-generator to converge torque transferred from the engine to the output shaft, to the torque of the output shaft.

A system for conducting a rationality check of a transmission grade sensor includes a controller configured to calculate a change in elevation over time based on a change in barometric pressure. The controller calculates another change in elevation based on an average grade determined from a transmission grade sensor. The controller compares the second change in elevation to the first change in elevation and, if there is a significant discrepancy between them, calculates a grade correction factor. The controller then modifies the shift logic and/or shift schedule of the transmission based on the average grade from the transmission grade sensor and on the grade correction factor.

A method to control the execution of a shift to a lower gear with a released accelerator pedal in a drivetrain provided with a dual-clutch, servo-assisted transmission; the following steps are provided: opening, in a first instant, an outgoing clutch; closing, in the first instant, an incoming clutch; completing the opening of the outgoing clutch with a first linear ramp in a second instant; synchronizing, between the second instant and a third instant, a rotation speed of the internal combustion engine with a rotation speed of the incoming clutch; closing of the incoming clutch with a second linear ramp starting from a fourth instant, which is prior to or coincides with the second instant; completing the closing of the incoming clutch in a fifth instant, which coincides with or is subsequent to the second instant; and activating the internal combustion engine so as to generate a torque between the fourth instant and the third instant.