Patent
A method and apparatus for controlling an infinitely variable transmission of a motor vehicle
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TLDR
In this article, the transmission ratio of an infinitely variable V-belt transmission with variable pitch input and output pulleys operable by hydraulic cylinders is controlled by a regulating device connected to the intermediate connecting assembly, the regulating device being responsive to an operating variable of transmission.Abstract:
In apparatus for controlling the transmission ratio of an infinitely variable V-belt transmission having variable pitch input and output pulleys operable by hydraulic cylinders, each pulley being formed of a pair of conical discs, at least one of which is axially movable relative to the other disc of that pair and the input pulley being driven by a power source: a hydraulic control valve for operating the cylinders, the valve having an internal axially movable spool; a device responsive to the speed of the input pulley for urging the spool in one direction; a compression spring urging the spool in an opposite direction, the spring being loaded through an intermediate connecting assembly by an external loading device; and a regulating device connected to the intermediate connecting assembly, the regulating device being responsive to an operating variable of the transmission.read more
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Patent
Hydraulic control system for continuously variable v-belt transmission
TL;DR: In this article, a hydraulic control system consisting of a line pressure regulator valve which regulates the fluid supplied from a pump to provide a variable line pressure variable at least depending upon output torque of the engine is described.
Patent
Control system for an infinitely variable transmission
TL;DR: In this article, a control system for an infinitely variable transmission has a transmission ratio control valve (50) having a spool for controlling oil supplied to a cylinder (9) of a drive pulley (7) to change the transmission ratio.
Patent
Control system for a continuously variable transmission
TL;DR: In this article, a continuous variable transmission for transmission power of an internal combustion engine to driving wheels of a motor vehicle is described, which includes a drive pulley (7) including a hydraulically shiftable disc (7a) and a first hydraulic cylinder (9a) for shifting the disc.
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TL;DR: In this paper, a continuously variable transmission of the expansible frusto-conical pulley type with fluid expansion chambers controlling expansion and contraction of the V-groove is described.
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System for controlling the pressure of oil in a system for a continuously variable transmission
Kazunari Tezuka,Yasuhito Sakai +1 more
TL;DR: In this article, a control system for a motor vehicle provided with a clutch and a continuously variable transmission is described, where the transmission has a line pressure control valve having ports and a spool for controlling the line pressure of oil supplied to a cylinder of a pulley device to change the transmission ratio.
References
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Patent
Infinitely variable cone-pulley transmission
TL;DR: In this paper, a cone pulley transmission with infinitely actuatable and adjustable transmission is described, where the tensioning is provided by different sized pressure chargeable surfaces and throttled to different degrees with respect to the associated outlet of the sliding control valve.
Patent
Control device for a motor and an infinitely variable cone-pulley gear
Joerg Dantlgraber,Rudolf Schrodt +1 more
TL;DR: In this article, a control slide is provided for adjustment of the pressure of the fluid, which is controlled by an accelerator pedal and a centrifugal governor rotating proportionally with a part of the drive.
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Automatic transmission device, with belt transmission ratio variator, particularly for motor vehicles
TL;DR: In this article, an automatic transmission ratio variator is used to control the distance between two half-pulleys forming each pulley under control of a valve subjected on two opposed faces to the vacuum in the engine induction manifold and to a fluid pressure dependent upon the speed of the driving pulley respectively.
Patent
Hydraulically operated transmission system for automotive vehicles
TL;DR: In this article, an automatic transmission system for use in automotive vehicles is described, where the engine shaft drives an output shaft through a medium of a reversing gear and the output shaft carries a disk-shaped clutch element which can drive one flange of a variable-pitch sheave.
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