摘要:
The transmission comprises a hydraulic power transmission device, a V-belt stepless shifter and a planetary gear train. At restart time when the vehicle is at rest with the V-belt stepless shifter in high gear, the hydraulic power transmission device is operated to shift for providing a relatively high torque ratio, rather than the V-belt stepless shifter. A smooth restart is thus made possible. In addition, the planetary gear train permits the shifter smoothly to switch between forward and reverse. Both features meet the transmission needs of all vehicles.
摘要:
A V-belt type stepless transmission, basically including an input pulley and an output pulley mounted on parallel input and output shafts, respectively, each of the input and output pulleys having a stationary flange and a movable flange axially displaceable relative to the stationary flange and rotatable integrally therewith; an endless V-belt lapped around the input and output pulleys to transmit power therebetween; a servo mechanism for the movable flange, constituted by a drive member having a first screw or a second screw, the first screw formed on the movable flange or on a structure integrally connected to the movable flange, the second screw threadedly engaged with the first screw for axially displacing the movable flange by rotation of the second screw relative to the first screw, and a drive mechanism for the drive member; and a cam mechanism provided at least on one of the input and output shafts to vary compressive belt gripping force of the stationary and movable flanges in proportion to the torque transmitted by the belt.
摘要:
An overdrive unit in an automatic transmission having a planetary gear set including a helical gear and a thrust bearing interposed between the sun gear and revolving carrier for supporting any thrust loads produced between the sun gear and the carrier, thereby reducing the amount of any external force to be exerted on the outer race of the one-way clutch and thus improving the durability of the one-way clutch.
摘要:
In an hydraulic control system for an automatic transmission of a vehicle, when a low range frictional engagement mechanism is engaged in response to shift-down operation of the transmission, a flow regulator valve serves to steplessly regulate flow of fluid from a source of line pressure to the low range frictional engagement mechanism in accordance with changes of travel speed of the vehicle.