Pneumatic valve with an enhanced exhaust flow control feature

Details Pneumatic valve with an enhanced exhaust flow control feature Pneumatic valve with an enhanced exhaust flow control feature

B - Operations, Transporting

60

T

B60T 15/02 (2006.01)

Patent

CA 2508745

A valve for use in a pneumatic fluid system, such as an air brake system, is disclosed. The valve provides for fast release of pneumatic fluid from the delivery cavity (26) through the exhaust port (46) upon cessation of flow from the pneumatic fluid reservoir through the supply cavity (24). The valve includes a flow diverter (20) that restricts fluid flow from the delivery cavity (26) to the supply cavity (24) when pneumatic fluid pressure in the supply cavity (24) is less than that in the delivery cavity (26) with minimal restriction of flow from the supply cavity (24) to the delivery cavity (26) when pressure in the supply cavity (24) is greater than in the delivery cavity (26).

L'invention concerne une valve à utiliser dans un système fluidique pneumatique, notamment un système de freinage aérodynamique. Cette valve permet une libération rapide de fluide pneumatique à partir de la cavité distributrice (26) par le port de sortie (46), lors de l'arrêt du flux provenant du réservoir fluidique pneumatique et traversant la cavité de réserve (24). La valve comprend une soupape distributrice (20) permettant de restreindre l'écoulement du fluide de la cavité distributrice (26) à la cavité de réserve (24), lorsque la pression fluidique pneumatique de la cavité de réserve (34) est inférieure à celle de la cavité distributrice (26) ; et permettant une restriction minimale d'écoulement de la cavité de réserve (24) à la cavité distributrice (26), lorsque la pression dans la cavité de réserve (24) est supérieure à celle de la cavité distributrice (26).

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