Control valve for the working pressure of an automatic change-sp

Details Control valve for the working pressure of an automatic change-sp Control valve for the working pressure of an automatic change-sp

1973-02-12

1978-01-31

Scott, Samuel

Machine element or mechanism

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

Preselected indexed position

B60K 4118

Patent

active

040709280

ABSTRACT:
A control valve for the working pressure or for another pressure in an automatic transmission for vehicles, especially motor vehicles, in which a higher pressure fed in a throttled manner, possibly effective as pre-control pressure of a slide valve, is controlled in the manner of an excess pressure valve; the valve body of this control valve which is constructed as solenoid valve is acted upon by a control magnitude dependent on torque; the armature of the solenoid valve acts in the de-energized condition on the valve closure body with a predetermined force whereby this force is variable upon energization of the coil as a function of torque of the driving engine.

REFERENCES:
patent: 2631702 (1953-03-01), Prather
patent: 2938403 (1960-05-01), Harrison et al.
patent: 3621735 (1971-11-01), Lemieux
patent: 3688606 (1972-09-01), Lemieux et al.

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