Method for controlling a rate of changing an RPM ratio in a continuously variable transmission

Patent · Tue Apr 29 00:00:00 EDT 1986

OSTI ID:5730712

Niwa, T; Gono, T; Osanai, A

A method is described for controlling a rate of changing an RPM ratio in a continuously variable transmission connected to an engine in a vehicle, the transmission having a driving pulley mounted on an input shaft, the driving pulley comprising a fixed member and a movable member, the movable member being actuated by an hydraulic cylinder to form a V-shaped opening between the movable member and the fixed member, a driven pulley mounted on an output shaft, the driven pulley comprising another fixed member and another movable member. The another movable member is similarly actuated by another hydraulic cylinder supplied with a line pressure to form another V-shaped opening between the another movable member and the another fixed member and an endless belt member spanning the pulleys so that an effective diameter of the pulleys can be varied at different rates with regard to each other so that different speed ratios can be obtained.

• Assignee: Toyota Jidosha Kabushiki Kaisha, Aichi
• Patent Number(s): US 4584907
• OSTI ID: 5730712
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330602* -- Vehicle Design Factors-- Engine-Transmission Matching
COMPUTER CALCULATIONS
COMPUTERIZED CONTROL SYSTEMS
CONTROL EQUIPMENT
CONTROL SYSTEMS
ENGINES
EQUIPMENT
HYDRAULIC CONTROL DEVICES
MACHINE PARTS
MECHANICAL TRANSMISSIONS
MOTION
OPERATION
PRESSURE EFFECTS
ROTATION
SHAFTS
SPEED REGULATORS
VEHICLES
VELOCITY