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

1986-11-10

1989-05-09

Braun, Leslie A.

Machine element or mechanism

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

Preselected indexed position

74867, B60K 4112

Patent

active

048278041

ABSTRACT:
A control system for a motor vehicle provided with a clutch and a continuously variable transmission. The 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. When the clutch is disengaged, the line pressure is set to a minimum value sufficient for tensing a belt of the pulley device for preventing the belt from slipping when the clutch is re-engaged.

REFERENCES:
patent: 4369675 (1983-01-01), van Deursen
patent: 4387608 (1983-06-01), Mohl et al.
patent: 4459878 (1984-07-01), Frank
patent: 4522086 (1985-06-01), Haley
patent: 4605112 (1986-08-01), Takano
patent: 4628773 (1986-12-01), Itoh et al.
patent: 4641553 (1987-02-01), Kobayashi
patent: 4644827 (1987-02-01), Takano et al.
patent: 4651595 (1987-03-01), Miyawaki
patent: 4653006 (1987-03-01), Osanai et al.
patent: 4665775 (1987-05-01), Nagamatsu
patent: 4669336 (1987-06-01), Okada et al.
patent: 4674363 (1987-06-01), Miyawaki
patent: 4680987 (1987-07-01), Morimoto
patent: 4680990 (1987-07-01), Ohgami

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