System for controlling the pressure of oil in a system for a con

Details System for controlling the pressure of oil in a system for a con System for controlling the pressure of oil in a system for a con

1986-08-26

1988-03-15

Braun, Leslie

Machine element or mechanism

Rotary member or shaft indexing, e.g., tool or work turret

Preselected indexed position

74866, B60K 4116

Patent

active

047305223

ABSTRACT:
A control system for a continuously variable transmission has a line pressure control valve having ports and a spool for controlling the line pressure of oil supplied to a cylinder of a pulley device to change the transmission ratio. The line pressure control valve has chambers. When a motor vehicle is decelerated at coasting of the vehicle, the spool of the line pressure control valve is shifted by controlling the amount of oil supplied to the chambers of the valve, so that the line pressure increases in accordance with the magnitude of the deceleration.

REFERENCES:
patent: 4369675 (1983-01-01), Deursen
patent: 4458318 (1984-07-01), Smit et al.
patent: 4522086 (1985-06-01), Haley
patent: 4533340 (1985-08-01), Abo et al.
patent: 4579021 (1986-04-01), Yamamuro et al.
patent: 4619157 (1986-10-01), Sakai
patent: 4619629 (1986-10-01), Shigematsu et al.
patent: 4631043 (1986-12-01), Tokoro et al.
patent: 4638689 (1987-01-01), Sakai

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