Machine element or mechanism – Rotary member or shaft indexing – e.g. – tool or work turret – Preselected indexed position
Patent
1990-07-03
1991-08-27
Herrmann, Allan D.
Machine element or mechanism
Rotary member or shaft indexing, e.g., tool or work turret
Preselected indexed position
74851, 74858, 74859, 74872, 474 12, B60K 4114
Patent
active
050423258
ABSTRACT:
A control system for a steplessly variable transmission comprising a drive pulley and driven pulley formed with V-shaped grooves respectively, an endless belt engaged with the both grooves of the pulleys and tensioned between the pulleys to transmit engine torque therethrough, cylinders provided on the pulleys for being subjected to a hydraulic pressure to vary an effective diameter of the pulleys so that a speed ratio of the transmission is continuously changed, a hydraulic pressure supply device for introducing the hydraulic pressure into the cylinder means, a line pressure control device for controlling a line pressure of a hydraulic circuit which controls operation of the cylinders, a line pressure detecting device for detecting the line pressure, a torque detecting device for detecting the engine torque transmitted to the drive pulley, a torque allowance computing device for computing a maximum allowable belt transmitting torque which is effectively transmitted from the drive pulley to the driven pulley through the belt under the line pressure detected by the line pressure detecting device, and the torque control device for controlling a torque transmitted from the drive pulley to the driven pulley to a value smaller than the maximum torque when the engine torque detected by the torque detecting device is greater than the maximum torque. When a line pressure of a hydraulic control circuit therefor is unduly lowered, the slip between the drive and driven pulleys can be effectively suppressed.
REFERENCES:
patent: 4403527 (1983-09-01), Mohl et al.
patent: 4515040 (1985-05-01), Takeuchi et al.
patent: 4543077 (1985-09-01), Yamamuro et al.
patent: 4631043 (1986-12-01), Tokoro et al.
patent: 4716788 (1988-01-01), Kita
patent: 4736301 (1988-04-01), Osanai
patent: 4923433 (1990-05-01), Tanaka et al.
patent: 4945483 (1990-07-01), Tokoro
Nogami Takashi
Sawasaki Tomoo
Herrmann Allan D.
Levi Benjamin
Mazda Motor Corporation
LandOfFree
Control system for steplessly variable power transmission does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Control system for steplessly variable power transmission, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Control system for steplessly variable power transmission will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1406613