Title:
【発明の名称】クラッチの制御装置
Document Type and Number:
Japanese Patent JP2749045
Kind Code:
B2
Abstract:
A continuously variable belt-driven transmission includes a hydraulic torque converter (10), a variable diameter displaceable input pulley (14), a variable diameter displaceable output pulley (16), forward and reverse planetary gearing, a differential mechanism (20) and half shafts driven from the differential mechanism. A slipping lockup clutch (42) is hydraulically actuated to connect and disconnect selectively the impeller (26) and turbine (28) of the torque converter. The radial position of the drive belt that engages the input and output pulleys (14,16) is determined by selectively pressurizing and venting a cylinder (58) to move displaceable sheaves (52) of a pulley. Hydraulically actuated clutches are selectively engageable to produce forward drive or reverse drive from the output pulley (16) to the differential mechanism. Various sensors produce electric signals as input to a microprocessor (172) indicate the position of the engine throttle, the magnitude of engine speed, primary pulley speed, secondary pulley speed, converter lockup clutch pressure, belt load pressure, line pressure and the position of a PRNDL gear selector (182). A valve body (174) hydraulically actuates, in accordance with the output produced by the computer, the forward clutch (118), the reverse clutch (120), the torque converter lockup clutch (42) and the displaceable sheaves (52) of the input pulley (14) and output pulley (16). An electronic feedback system controls the slip, engagement and disengagement of the torque converter lockup clutch (42).
Inventors:
RARII TOOMASU BURAUN
MAABIN HOORU KURASUKII
MAABIN HOORU KURASUKII
Application Number:
JP820588A
Publication Date:
May 13, 1998
Filing Date:
January 18, 1988
Export Citation:
Assignee:
FUOODO MOOTAA CO
International Classes:
B60W30/18; F16D7/02; F16H45/02; F16H61/14; F16H61/66; F16H61/662; F16H59/68; (IPC1-7): F16H61/14
Attorney, Agent or Firm:
Akira Asamura (2 outside)