Machine element or mechanism – Rotary member or shaft indexing – e.g. – tool or work turret – Preselected indexed position
Patent
1991-02-22
1991-10-15
Herrmann, Allan D.
Machine element or mechanism
Rotary member or shaft indexing, e.g., tool or work turret
Preselected indexed position
74867, B60K 4112
Patent
active
050563807
ABSTRACT:
A steplessly variable power transmission has a torque converter provided with an input member connected with an engine output member of an engine and an output member. A belt-pulley type of steplessly variable power transmitting mechanism is provided with primary pulley device, connected with the output member of the torque converter. A secondary pulley device, constituting an output member of the transmission, is also provided and a belt connects the primary pulley devices with the secondary pulley device for transmitting power between the primary and secondary pulley device with a predetermined pulley speed ratio. A hydraulic control system controls effetive diameters of the primary and secondary pulley devices to thereby change the speed ratio of the transmission steplessly. An output torque of the torque converter or a turbine torque of the torque converter, and the pulley speed ratio are calculated. A line pressure of the hydraulic control system is controlled in accordance with signals representing the output or turbine torque and pulley speed ratio to control the effective diameter so that a slippage of the belt can be effectively prevented.
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Morishige Chitoshi
Sawasaki Tomoo
Herrmann Allan D.
Levi Benjamin
Mazda Motor Corporation
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