Provided herein is a method for calibrating a clutch by searching for the minimum of a multi-dimensional surface including determining the error between a spline function and recorded data relating to clutch characteristics, creating a multi-dimensional surface corresponding to the error values, determining the minimum of the multi-dimensional surface using the steps of performing a Steepest Gradient & Direction determination step and conducting a Golden Section Search and Switch Direction Step to find a minimum that meets a predetermined closing condition. Additionally, provided herein is a computer-implemented system for calibrating the clutch.

A control device for a power transmission mechanism is provided, performing control so that a driving wheel reliably obtains torque when a vehicle is started. In a vehicle having a power transmission mechanism that includes a power transmission path transmitting power from a power source to a first driving wheel and a second driving wheel, and a power transmission element arranged in the power transmission path between the power source and the second driving wheel, a control device for a power transmission mechanism includes a control section controlling a fastening force of the power transmission element so as to control power transmission capacity of the power transmission mechanism from the power source to the second driving wheel, wherein when the control section acquires that the vehicle transitions from a traveling state to a stop state, the acquisition triggers the control section to increase the power transmission capacity.

A method and system are provided for operating a lockup clutch of a torque converter of a motor vehicle. The torque converter includes a pump rotatably driven by a drive unit, a rotatable turbine fluidly coupled to the pump and configured to drive an input shaft of a transmission, and a lockup clutch selectively engageable to non-fluidically couple the pump to the turbine to transmit torque from the drive unit to the transmission. The operation of the lockup clutch is controlled by the system in response to detecting that the motor vehicle is coasting.

A brake torque distribution system for a vehicle can include a braking system and a controller. The controller can be configured to signal a clutch of the vehicle powertrain to move to the engaged position such that the front wheels are rotationally coupled to the rear wheels and the brake torque applied to the front wheels by the braking system is transmitted to the rear wheels. The controller can be configured to signal the clutch to move to the engaged position based on an inclination angle signal received by the controller and indicative of an angle of inclination of the vehicle, a selected gear signal received by the controller that is indicative of the reverse gear ratio being selected in the powertrain, and a load signal received by the controller and indicative of a load applied to a portion of the vehicle adjacent to the rear wheels.

An apparatus (a controller), and systems and methods for management of inputs, determination of a calculated clutch temperature, and control of action related to the clutch of a transmission system, and notification improvements to a user associated therewith are disclosed. In particular, a clutch calculator circuit is augmented by a machine learning component that employs a machine learning technique and provides a projected clutch temperature as a basis for actions to be taken.

A clutch control method for a hybrid vehicle with a DCT is provided. The method includes determining an energy-saving possible period based on a selection state of shifting ranges, operation states of an accelerator pedal and a brake pedal, and the gradient of a road on which the vehicle is driven. An operation current is set for maintaining a clutch, which is configured to engage the first gear, engaged as 0 A in response to determining that a current state of the vehicle is in the energy-saving possible period.

Disclosed is a method for controlling engagement of an engine clutch in a hybrid electric vehicle in which an engagement control method of the engine clutch is accurately determined so as to minimize a determination error and a sense of discontinuity caused by conversion of the engagement control method resulting therefrom.

The mobile body includes: a stepped transmission; a clutch; a control device; a drive source; an output detection means that acquires an output of the drive source; and an acceleration detection means that acquires acceleration; in which the control device includes: a travel resistance calculation means that calculates a travel resistance based on the acceleration; and a clutch capacity setting means that performs clutch capacity setting based on the output and the travel resistance.

The disclosure relates to a method for controlling a driveline (10) of a vehicle (1), wherein the driveline (10) at least comprises a transmission (13) and a clutch (12), wherein the clutch (12) is adapted to be provided between the transmission (13) and a propulsion unit (11) of the driveline (10), wherein the method comprises the steps of; predicting an imminent drive route, identifying if the imminent drive route comprises any clutch severity classification (CSC), and if the imminent drive route comprises a clutch severity classification (CSC)—estimating (103) an expected clutch temperature (Tic) dependent on at least the clutch severity classification (CSC) and one vehicle parameter (Vp), wherein, the clutch severity classification (CSC) is at least dependent on an inclination of the imminent drive route, and if (105) the expected clutch temperature (Tic) is above a clutch temperature threshold value (Tt); controlling (106) the driveline (10) in a critical heat mode, wherein in the critical heat mode the transmission (13) is controlled such that a clutch temperature increase is lower in comparison to a normal driveline control mode.

The disclosure relates to a method for controlling a driveline (10) of a vehicle (1), wherein the driveline (10) at least comprises a transmission (13) and a clutch (12), wherein the clutch (12) is adapted to be provided between the transmission (13) and a propulsion unit (11) of the driveline (10), wherein the method comprises the steps of; predicting an imminent drive route, identifying if the imminent drive route comprises any clutch severity classification (CSC), and if the imminent drive route comprises a clutch severity classification (CSC)—estimating (103) an expected clutch temperature (Tic) dependent on at least the clutch severity classification (CSC) and one vehicle parameter (Vp), wherein, the clutch severity classification (CSC) is at least dependent on an inclination of the imminent drive route, and if (105) the expected clutch temperature (Tic) is above a clutch temperature threshold value (Tt); controlling (106) the driveline (10) in a critical heat mode, wherein in the critical heat mode the transmission (13) is controlled such that a clutch temperature increase is lower in comparison to a normal driveline control mode.