Hydraulic lubrication control system for an automatic...

F - Mech Eng,Light,Heat,Weapons – 16 – H

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F16H 61/14 (2006.01) F16H 57/04 (2010.01) F16H 61/00 (2006.01) F16H 59/72 (2006.01)

Patent

CA 2197817

A sharp-edged orifice, located in an hydraulic circuit between a lubrication system and a source of lubrication, is connected to a flow control valve, which balances the differential pressure across the orifice and throttles the source of fluid pressure to a lubrication feed line. A lube augmentation valve, responsive to pressure, present when operating in forward drive, alternately opens and closes lubrication fluid flow through a second sharp-edged orifice located in a line arranged in parallel with the first orifice and connected downstream from that orifice and upstream from the lubrication circuit.

Orifice à bord vif, situé dans un circuit hydraulique entre un système de graissage et une source de lubrification. Cet orifice est relié à une vanne de régulation de débit qui équilibre la pression différentielle s'exerçant au niveau de l'orifice et qui régule par étranglement la source de la pression du liquide destiné à un circuit d'alimentation de lubrification. Une vanne de régulation du lubrifiant, qui réagit à la pression et qui intervient lorsqu'on est en marche avant, interrompt et rétablit alternativement le courant du liquide de lubrification au niveau d'un deuxième orifice à bord vif qui se trouve dans un conduit disposé parallèlement au premier et relié à l'ensemble du circuit à un emplacement situé en aval de ce premier orifice et en amont du circuit de lubrification.

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