Planetary gear transmission systems or components – Nonplanetary variable speed or direction transmission... – Nonplanetary transmission is belt or chain gearing
Patent
1997-01-29
1999-04-06
Wright, Dirk
Planetary gear transmission systems or components
Nonplanetary variable speed or direction transmission...
Nonplanetary transmission is belt or chain gearing
475127, 474 28, F16H 4706
Patent
active
058909877
ABSTRACT:
Continuously variable transmission, for a motor vehicle, provided with a primary pulley with an input pulley shaft, a secondary pulley with an output pulley shaft, a drive belt positioned around the primary and secondary pulleys and a transmission mechanism which is constructed in combination with a direct
eutral/reverse group and is positioned after the secondary pulley and has at least two adjustable transmission ratios for forward drive. The primary pulley with input pulley shaft and the secondary pulley with output pulley shaft are each coupled via a gear group to, respectively, an input transmission shaft and an output transmission shaft. The two transmission shafts essentially lie in the extension of one another and the two pulleys are located on either side of the axis line of the two transmission shafts. A hydraulic control circuit is installed which has at least a primary and a secondary control valve for controlling the pressures for the primary and the secondary pulley respectively. The transmission mechanism has at least two clutches for the forward drive and a clutch for the reverse drive. The hydraulic control circuit furthermore has two control valves for adjusting the said forward clutches.
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Kwon Peter T.
VAN Doorne's Transmissie B.V.
Wright Dirk
LandOfFree
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