An engine starting control system for hybrid vehicles is provided to prevent a temporal drop in drive force when starting an engine. The control system maintains an operating mode of a switching mechanism when starting the engine by the first motor, in a case that the vehicle is propelled in the forward direction by the first motor and that the switching mechanism is in a second mode, or in a case that the vehicle is propelled in the reverse direction by the first motor and that the switching mechanism is in the first mode. Thereafter, the control system increases a rotational speed of the engine to a self-sustaining speed, switches the operating mode of the switching mechanism, and increases torque of the engine.

A determination unit in an ECU of a rough terrain vehicle determines a reverse running state in a case that an engine rotational speed of an engine decreases when a traveling drive force is generated in the rough terrain vehicle. Further, if the determination unit determines occurrence of the reverse running state, the ECU refers to a clutch hydraulic pressure map, and sets a target hydraulic pressure so as to decrease gradually over time.

In some embodiments, techniques are provided for autonomously backing a vehicle (such as a Class 8 truck) to a trailer. In some embodiments, environment sensors such as image sensors and range sensors mounted to the vehicle detect a trailer and determine distances between the trailer and the vehicle as well as relative angles of the trailer and the vehicle. In some embodiments, the vehicle determines a path to the trailer based on this information, and autonomously controls braking, torque, and/or steering of the vehicle to autonomously back the vehicle along the determined path.

A strict reverse navigation method for optimal estimation of fine alignment is provided. The strict reverse navigation method including: establishing an adaptive control function; performing a forward navigation calculation process; performing a reverse navigation calculation process; and performing the adaptive control for a number of forward and reverse calculations. The strict reverse navigation method shortens an alignment time for the optimal estimation of fine alignment while ensuring an alignment accuracy. The strict reverse navigation method provided effectively solves a problem that an error of an initial value of filtering in an initial stage of the optimal estimation of fine alignment affects convergence speeds of subsequent stages. In the initial stage, a larger number of the forward and reverse navigation calculations are adopted to reduce an error of the initial value as much as possible and increase a convergence speed of the filtering.

A transmission device for a hybrid vehicle including: a plurality of shift dog clutches each arranged to selectively engage the movable side gear of one of the shift gear rows with the other of the main shaft and the counter shaft; a main clutch disposed between the internal combustion engine and the main shaft; a first motor gear disposed to be raced with respect to a motor output shaft connected to the motor, and constantly interlocked with the main shaft; a second motor gear disposed to be raced with respect to the motor output shaft, and constantly interlocked with the counter shaft; a motor dog clutch arranged to selectively engage one of the first and second motor gears with the motor output shaft; and a controller configured to control actuations of the shift dog clutch, the main clutch, and the motor dog clutch.

A control system for a vehicle includes a camera disposed at the vehicle and having a field of view rearward of the vehicle, and at least one non-imaging sensor disposed at the vehicle so as to sense a region at least rearward and partially sideward of the vehicle. During a reversing maneuver of the vehicle along a pathway, the control, responsive to processing of image data captured by the camera, determines edges of the pathway. During the reversing maneuver of the vehicle along the narrow pathway, the control, responsive to processing of data sensed by the non-imaging sensor, determines distances to objects present at or near the determined pathway and rearward and sideward of the vehicle. The control, responsive to determination of the pathway and determination of objects present along the pathway, is operable to steer the vehicle along the pathway to reverse the vehicle along the pathway.

A trailer backup assist system for a vehicle reversing a trailer includes a brake system and a throttle sensor module outputting a throttle application signal. The system further includes a control module estimating a road grade beneath the trailer and outputting a brake torque request to the brake system based on the estimated road grade and the throttle application signal.

A method of controlling a mobile work machine having a reversing gearbox. The driving direction reversal is initiated by detecting a driving direction reversal command. A change of the torque transmission from a current driving direction to a new driving direction is carried out as a powershift. Braking for the driving direction reversal occurs in a manner so as to recuperate energy. Furthermore, a device for controlling a mobile work machine, in particular for implementing the method, is also disclosed.

A maximum output line during HV backward running accompanying actuation of an engine is on a side of lower torque than a maximum output line in EV backward running in an engine stop state. Reverse drive torque during EV backward running is set in accordance with the sum of base torque suppressed within a range not higher than maximum output torque during HV backward running and correction torque added at the time when a reverse drive torque request from a driver is great in accordance with a running state.

A system for assisting in aligning a vehicle for hitching with a trailer includes a vehicle steering system, an imager mounted with and directed to a rear of the vehicle and outputting image data, and a controller. The controller receives the image data, applies a location identifier of a vehicle hitch ball to the image data, and identifies a coupler of the trailer within the image data. The controller also outputs a steering control signal to the steering system in reversing of the vehicle to align the location identifier of the vehicle hitch ball in the image data with the coupler of the trailer.