A continuously variable transmission includes a primary pulley, a secondary pulley, a metal belt wound around the primary pulley and the secondary pulley, and a controller. The metal belt includes a ring and a plurality of elements. The elements have respective receiving portions opening in a radial direction of the belt and receive the ring in the receiving portions. The controller executes a preliminary determined falling-off countermeasure control of the element when the end play larger than the predetermined length is detected to be generated or the continuously variable transmission is detected to be under the operation condition in which the end plays concentrate.

A method for controlling the engagement and/or disengagement of a parking lock of a transmission of a vehicle, in particular of a motor vehicle

The present invention relates to a dual-speed final drive control method and terminal device, and a storage medium. The method includes: S1: acquiring, according to electronic horizon data ahead, a gradient value of a road ahead, and when an absolute value of the gradient value is greater than a gradient threshold, proceeding to S2; and S2: determining, according to the gradient value, whether the road ahead is an uphill section or a downhill section, and if the road ahead is the uphill section, controlling all gears of a transmission to correspond to a higher final drive ratio in the dual-speed final drive when a vehicle travels into the uphill section; and if the road ahead is the downhill section, controlling all the gears of the transmission to correspond to a lower final drive ratio in the dual-speed final drive when the vehicle travels into the uphill section. According to the present invention, information of a road gradient predicted by electronic horizon is used in control of dynamic matching between a speed ratio of the dual-speed final drive and a speed ratio of the transmission, thereby making use of the dual-speed-ratio final drive to the greatest extent according to the terrain to improve the economy in energy consumption of the entire vehicle.

A method of operating a vehicle is provided. The vehicle includes: an engine; a throttle operator moveable by a driver; a throttle valve regulating airflow to the engine; a continuously variable transmission (CVT) operatively connected to the engine; at least one ground engaging member including at least one of: a wheel and a track; a piston operatively connected to a driving pulley of the CVT for applying a piston force to the driving pulley when actuated and thereby changing an effective diameter of the driving pulley; and a control unit for controlling actuation of the piston and the piston force. The method includes: determining a driven pulley speed of a driven pulley of the CVT; detecting an uphill stand condition indicative of the vehicle being stopped on an uphill; responsive to the detection of the uphill stand condition, controlling the piston force based on the driven pulley speed.

A human-powered vehicle control device controls the transmission that changes the transmission ratio of a human-powered vehicle. The control device includes an electronic controller that switches between a first control state for controlling the transmission to change the transmission ratio in accordance with a first prescribed set of conditions, and a second control state for controlling the transmission to suppress the change of the transmission ratio as compared with if the electronic controller is in the first control state, in accordance with at least one of a steering state of the human-powered vehicle, a surface condition of a travel path on which the human-powered vehicle travels, and a pedaling preparation state related to the pedals of the human-powered vehicle.

A vehicle travel control method and a vehicle travel control device carries out a downshift control of an automatic transmission when a vehicle speed increases from a set vehicle speed during a constant speed travel control by at least a first prescribed value. Subsequent downshift control of the automatic transmission is prohibited upon determining the vehicle speed has increased from the set vehicle speed by at least the first prescribed value due to an operation of an operating element by the driver during constant speed travel control. Downshift control of the automatic transmission is executed upon determining insufficient deceleration of the vehicle exists where the driver is not operating the accelerator pedal during prohibition of the downshift control.

The invention relates to a multifunctional, flameproofed transmission control module [10] adapted for automatically altering transmission performance based on an alert received from a Proximity Detection System (PDS) [12]. The transmission control module [10] comprises a Proximity Detection Interface (PDI) [14] which is electronically linked to a PDS [12] and which is adapted to reduce transmission performance and vehicle speed the moment an obstacle is detected within a detection zone, and to allow an increase in transmission performance and vehicle speed the moment an obstacle is no longer detected within a detection zone.

A transmission includes an input shaft coupled to a prime mover, a countershaft, main shaft, and an output shaft, with gears between the countershaft and the main shaft. A shift actuator selectively couples the input shaft to the main shaft by rotatably coupling gears between the countershaft and the main shaft. The shift actuator is mounted on an exterior wall of a housing including the countershaft and the main shaft. An integrated actuator housing includes a single external power access for the shift actuator. A controller interprets a shaft displacement angle, determines if the transmission is in an imminent zero or zero torque region, and performs a transmission operation in response to the transmission in the imminent zero or zero torque region.

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 vehicle includes a powerplant, at least one drive wheel, a transmission, and a controller. The powerplant is configured to generate power to propel the vehicle. The transmission is configured to deliver power from the powerplant to the at least one drive wheel. The controller is programmed to, in response to a scheduled upshift of the transmission and detection of a set of conditions that are indicative of the vehicle climbing while on loose terrain, override upshifting the transmission and maintain a current gear of the transmission. The controller is further programmed to, in response to the scheduled upshift of the transmission and non-detection of at least one condition of the set of conditions that are indicative of the vehicle climbing while on loose terrain, upshift the transmission.