Abstract: A user input signal management method for a vehicle provided with a prime mover having an output that rotates and an input for a user input signal that controls the rotating speed of the output of the prime mover. The method including the reception of a signal representative of the position of a user input of a vehicle, the reception of data representative of at least one condition of the vehicle, the modification of the received signal representative of the position of the user input as a function of the data received and the supply of the modified signal to the accelerator input of the prime mover.
Abstract: A slip control method and arrangement for a drivetrain including a continuously variable transmission, forward-reverse clutch arrangement and an optional three-speed gearbox is described herein. The forward-reverse clutch arrangement includes a clutch that is so controlled as to slip when a torque higher than the usable torque attempts to pass through. Accordingly, the clutch prevents the prime mover from stalling.
Abstract: A compression-based speed limiting for a driveline including a transmission is described herein. The driveline controller detects over speeding and controls the ratio of the transmission to therefore increase compression of the prime mover and therefore limit speed.
Abstract: The control of the engagement rate of a clutch in a driveline is described herein. The clutch engagement rate is determined using at least one parameter of the driveline. An illustrative example where the parameters include the slipping level of the clutch and the rotational speed at the output of the clutch is described herein.
Type:
Grant
Filed:
May 17, 2019
Date of Patent:
August 2, 2022
Assignee:
TRANSMISSION CVTCORP INC.
Inventors:
Jonathan Guerin, Jean-Francois Dionne, Daniel Girard
Abstract: Clutch temperature management in a slip control method and arrangement for a drivetrain including a continuously variable transmission is described herein. The drivetrain includes a clutch that is so controlled as to slip when a torque higher than the usable torque attempts to pass through. The temperature data from the clutch is used to determine the usable torque. Accordingly, the clutch prevents the prime mover from stalling.
Type:
Application
Filed:
May 28, 2020
Publication date:
July 14, 2022
Applicant:
TRANSMISSION CVTCORP INC.
Inventors:
Jonathan Guérin, Jean-François Dionne, Daniel Girard, François Messier
Abstract: A calibration method for a slip control arrangement of a driveline including a continuously variable transmission is described herein. The driveline includes a clutch that is so controlled as to slip when a torque higher than the usable torque attempts to pass through. Accordingly, the clutch prevents the prime mover from stalling. A calibration method to link a valve command value and a torque allowed to pass through the clutch includes preventing the vehicle from moving and increasing the pressure applied in the clutch while noting the torque % value developed by the prime mover.
Abstract: A drivetrain control and a method for controlling a drivetrain where the actual engine torque of the prime mover is taken into account are described herein. Illustrative embodiments include control systems and methods where the ratio set point of the CVT and/or the rate of the CVT ratio change are modified according to the actual engine torque of the prime mover.
Abstract: A skew limiter for a toric-drive CVT is described herein. The skew limiter proposes a shaped piece that limits the skew angle to a known angle notwithstanding the tilt angle of the rollers.
Abstract: A calibration method for a slip control arrangement of a driveline including a continuously variable transmission is described herein. The driveline includes a clutch that is so controlled as to slip when a torque higher than the usable torque attempts to pass through. Accordingly, the clutch prevents the prime mover from stalling. A calibration method to link a valve command value and a torque allowed to pass through the clutch includes preventing the vehicle from moving and increasing the pressure applied in the clutch while noting the torque % value developed by the prime mover.
Abstract: A slip control method and arrangement for a driveline is described herein. The driveline includes a clutch that is so controlled as to slip when a torque higher than the usable torque attempts to pass through. Accordingly, the clutch prevents the prime mover from stalling.
Abstract: A calibration method for a slip control arrangement of a driveline including a continuously variable transmission is described herein. The driveline includes a clutch that is so controlled as to slip when a torque higher than the usable torque attempts to pass through. Accordingly, the clutch prevents the prime mover from stalling. A calibration method to link a valve command value and a torque allowed to pass through the clutch includes preventing the vehicle from moving and increasing the pressure applied in the clutch while noting the torque % value developed by the prime mover.
Abstract: A Feed Mixer Drivetrain provided with a transmission and control method therefor, wherein a controller is so configured as control a sequence of operation phases of the feed mixer; each operation phase defining a predetermined speed of the input shaft of the feed mixer via the transmission and a predetermined duration.
Type:
Application
Filed:
January 30, 2018
Publication date:
April 30, 2020
Applicant:
TRANSMISSION CVTCORP INC.
Inventors:
Michel-Xavier DUMAIS, Jonathan GUÉRIN, Jeremy SHIFLETT, Jean-Francois DIONNE, Daniel GIRARD
Abstract: A drivetrain for connection between the output of a prime mover and the input of a final drive is described herein. The drivetrain comprises a CVT including an input connected to the output of the prime mover and an output; a power mixer having a first input connected to the output of the prime mover, a second input coupled to the output disk of the CVT and an output; a three-speed transmission having an input connected to the output of the power mixer and an output connected to the input of the final drive.
Abstract: A slip control method and arrangement for a driveline including a continuously variable transmission is described herein. The driveline includes a hydraulic slip arrangement that is so controlled as to slip when a torque higher than the usable torque attempts to pass through. Accordingly, the hydraulic slip arrangement prevents the prime mover from stalling.
Abstract: A calibration method for a slip control arrangement of a driveline including a continuously variable transmission is described herein. The driveline includes a clutch that is so controlled as to slip when a torque higher than the usable torque attempts to pass through. Accordingly, the clutch prevents the prime mover from stalling. A calibration method to link a valve command value and a torque allowed to pass through the clutch includes preventing the vehicle from moving and increasing the pressure applied in the clutch while noting the torque % value developed by the prime mover.
Abstract: A slip control method and arrangement for a driveline including a continuously variable transmission is described herein. The driveline includes a clutch that is so controlled as to slip when a torque higher than the usable torque attempts to pass through. Accordingly, the clutch prevents the prime mover from stalling.
Type:
Grant
Filed:
January 12, 2015
Date of Patent:
June 4, 2019
Assignee:
TRANSMISSION CVTCORP INC.
Inventors:
Jean-François Dionne, Jean-Robert Desmeules, Jonathan Guérin, Daniel Girard
Abstract: A cooling arrangement to cool the rollers of a toroidal CVT is described herein. The cooling arrangement includes nozzles so configured and sized as to project cooling fluid onto the edge and onto the opposite top and bottom surfaces of the roller.
Type:
Application
Filed:
December 8, 2016
Publication date:
December 6, 2018
Applicant:
Transmission CVTCORP Inc.
Inventors:
Kenneth Huston, Mathieu Guertin, François Messier, Rémi Tremblay
Abstract: A drive assembly including a CVT and a direction reversing mechanism is described herein. The direction reversing mechanism is such that the output of the drive assembly may rotate at variable speed in a first direction and at a fixed speed in a second direction.
Abstract: A continuously variable transmission (CVT) provided with an integrated gerotor pump that also acts as a rotation blocker is described herein. In one illustrated embodiment, the gerotor pump is used to pump lubrication and cooling fluid through a radiator and into the hollow shaft of the CVT.
Abstract: A method where the spin factor is looked up in a table; the slip factor is measured and the clamping pressure is adjusted to achieve a slip/spin ratio provided in a desired range is described herein. According to another aspect, an active mechanical clamping mechanism using a longitudinally movable contact point is also described.
Type:
Grant
Filed:
August 3, 2012
Date of Patent:
June 26, 2018
Assignee:
Transmission CVTCORP Inc.
Inventors:
Samuel Beaudoin, Paul Okulov, Alexandre Blouin, Christian McMahon, David Gauthier Roy, Francois Messier, Jean-Robert Desmeules, Kenneth Huston, Mathieu Guertin, Patrick Cyr Gagné, Patrick Raymond