Abstract: A driving apparatus includes an output shaft, a driving motor, and a speed-reducer. The driving motor includes a stator having an annular shape, and a rotor having an annular shape. The rotor is disposed radially inward of the stator. The speed-reducer is disposed radially inward of the driving motor. The speed-reducer is configured to reduce the speed of rotation output from the rotor and transmit a rotary driving force of the rotor to the output shalt.

Abstract: A vehicle includes front-wheels each of which is driven by a front-wheel driving motor having a first motor characteristic and a speed reducer, and rear wheels each of which is driven by a rear-wheel driving motor having a second motor characteristic. An ECU calculates a total target wheel torque of all the wheels, and calculates target wheel torques for the respective front wheels and the respective rear wheels based on the total target wheel torque, the first motor characteristic, the second motor characteristic, and a characteristic of the speed reducer. The ECU calculates a target motor torque for the front-wheel driving motor based on a speed reduction ratio of the speed reducer and the target wheel torque for each front wheel, and calculates a target motor torque for the rear-wheel driving motor based on the target wheel torque for each rear wheel.

Abstract: A vehicular steering system includes a driving wheel, a wheel drive actuator that rotationally drives the driving wheel, a steering operation mechanism that steers the driving wheel, a steering operation actuator that applies a steering operation force that is used to steer the driving wheel to the steering operation mechanism, and a hydraulic circuit that transmits the rotational driving force of the wheel drive actuator to the steering operation mechanism via hydraulic oil as a steering operation force.

Abstract: A vehicular steering system includes a driving wheel, a wheel drive actuator that rotationally drives the driving wheel, a steering operation mechanism that steers the driving wheel, a steering operation actuator that applies a steering operation force that is used to steer the driving wheel to the steering operation mechanism, and a hydraulic circuit that transmits the rotational driving force of the wheel drive actuator to the steering operation mechanism via hydraulic oil as a steering operation force.

Abstract: A vehicle includes: a pair of front wheels; a pair of rear wheels; a front-wheel motor configured to drive the front wheels; a rear-wheel motor configured to drive the rear wheels; and a reducer configured to reduce a rotation speed of one of the front-wheel motor and the rear-wheel motor, and transmit drive power to the wheels driven by one of the motors. The one of the front-wheel motor and the rear-wheel motor is a motor with a rotation speed higher and torque lower than those of the other one of the motors.

Abstract: A vehicle includes: a pair of front wheels; a pair of rear wheels; a front-wheel motor configured to drive the front wheels; a rear-wheel motor configured to drive the rear wheels; and a reducer configured to reduce a rotation speed of one of the front-wheel motor and the rear-wheel motor, and transmit drive power to the wheels driven by one of the motors. The one of the front-wheel motor and the rear-wheel motor is a motor with a rotation speed higher and torque lower than those of the other one of the motors.

Abstract: A vehicle drive control device includes a continuously variable transmission mechanism (hereinafter referred to as CVT (6) of a torque control type capable of continuously varying a transmission gear ratio, and a controller (34) which controls operations of the CVT (6) and an engine (2). The controller (34) includes a first control section (43; 43A) which controls a torque of the CVT (6) based on a target transmission input torque (TTRN,T), and a second control section (44) which controls a torque of the engine (2) based on a target engine rotation speed (?e,T).

Abstract: A full-toroidal continuously variable transmission has a hydraulic actuator (20) for applying pressing force to a pair of disks (5, 15) through a roller (17). The hydraulic actuator (20) includes first and second oil chambers (23, 24). The pressing force of the hydraulic actuator (20) is produced by a pressure difference between the oil chambers (23, 24). A directional control valve (29; 29P; 29Q) connects a hydraulic pressure source (25; 25P; 25Q) to either of the oil chambers, and an oil tank (26) is connected to the other oil chamber. Each corresponding an intermediate section (27a; 27Pa, 27Qa) of a feeding path (27, 27P, 27Q) and intermediate section (28a; 28Pa; 28Qa) of a discharge path (28; 28P; 28Q) are connected by a communicational path (32; 32P; 32Q). A check valve (33; 33P; 33Q) for permitting a flow of operation oil only to the feeding path side (27, 27P, 27Q) is provided in the communication path (32; 32P; 32Q).

Abstract: A full-toroidal continuously variable transmission has a hydraulic actuator (20) for applying pressing force to a pair of disks (5, 15) through a roller (17). The hydraulic actuator (20) includes first and second oil chambers (23, 24). The pressing force of the hydraulic actuator (20) is produced by a pressure difference between the oil chambers (23, 24). A directional control valve (29; 29P; 29Q) connects a hydraulic pressure source (25; 25P; 25Q) to either of the oil chambers, and an oil tank (26) is connected to the other oil chamber. Each corresponding an intermediate section (27a; 27Pa, 27Qa) of a feeding path (27, 27P, 27Q) and intermediate section (28a; 28Pa; 28Qa) of a discharge path (28; 28P; 28Q) are connected by a communicational path (32; 32P; 32Q). A check valve (33; 33P; 33Q) for permitting a flow of operation oil only to the feeding path side (27, 27P, 27Q) is provided in the communication path (32; 32P; 32Q).

Abstract: A vehicle drive control device includes a continuously variable transmission mechanism (hereinafter referred to as CVT (6) of a torque control type capable of continuously varying a transmission gear ratio, and a controller (34) which controls operations of the CVT (6) and an engine (2). The controller (34) includes a first control section (43; 43A) which controls a torque of the CVT (6) based on a target transmission input torque (TTRN,T), and a second control section (44) which controls a torque of the engine (2) based on a target engine rotation speed (?e,T).

Abstract: In a method of fabricating a variator disc, an outer periphery (5) of the input disc (D1), with a spline hole (4) thereof meshed with an input shaft (6), is finished using the input shaft (6) as a working reference. Subsequently, a race (2) is finished with high precisions using the outer periphery (5) as a working reference. There is an alternative method wherein a spline hole (4) with a machining allowance is precisely formed by means of a broach (X) prior to the heat treatment of a blank (B); after hardening the blank (B) by the heat treatment, tooth flanks (4a) of the spline hole (4) are precisely finished by means of a finishing broach (Y); and then, a race (2) of an input disc (D1) is precisely finished using the tooth flanks (4a) as a working reference.

Abstract: In a method of fabricating a variator disc, an outer periphery (5) of the input disc (D1), with a spline hole (4) thereof meshed with an input shaft (6), is finished using the input shaft (6) as a working reference. Subsequently, a race (2) is finished with high precisions using the outer periphery (5) as a working reference. There is an alternative method wherein a spline hole (4) with a machining allowance is precisely formed by means of a broach (X) prior to the heat treatment of a blank (B); after hardening the blank (B) by the heat treatment, tooth flanks (4a) of the spline hole (4) are precisely finished by means of a finishing broach (Y); and then, a race (2) of an input disc (D1) is precisely finished using the tooth flanks (4a) as a working reference.

Abstract: In a belt type continuously variable speed system, when a hydraulic cylinder (110) operates, the hydraulic cylinder (110) and an elastic member (134) in a tensioner (104) draw a belt (102) against an elastic member contained in a variable radius pulley (107). Consequently, a power transmission ring contained in the variable radius pulley (107) is made eccentric from the axis of the variable radius pulley. The power transmission ring is displaced to the position where a force produced by the hydraulic cylinder (110) and the elastic member (134) in the tensioner (104) to make the power transmission ring eccentric and a force produced by an elastic member contained in the variable radius pulley (107) to urge the power transmission ring toward a position which is concentric with the axis of the variable radius pulley (107) are balanced with each other, thereby achieving speed variation.

Abstract: A variable diameter pulley comprises a pair of pulley main bodies (18, 19) connected to a rotating shaft (15), and a power transmission ring (20) interposed between the pulley main bodies. A belt (2) is passed around an outer periphery of the power transmission ring (20). The power transmission ring (20) is made eccentric relative to an axis (15a) of the rotating shaft (15) so as to be varied in its contact diameter (D). Both pulley main bodies (18, 19) are threadedly connected to the rotating shaft (15) by a torque cam mechanism (T) composed of a pair of thread connection mechanisms, which are inversely threaded to each other. Torque for effecting rotation of the respective pulley main bodies (18, 19) relative to the rotating shaft (15) is converted into a force, which causes both pulley main bodies (18, 19) to approach each other in equal amounts of stroke.