B - Operations – Transporting – 60 – T
Patent
B - Operations, Transporting
60
T
B60T 8/34 (2006.01) B60T 8/58 (2006.01)
Patent
CA 2619322
A pneumatic emergency brake assurance module comprises a high capacity transfer valve connected in a first position to the output of the variable load relay valve and in a second position connected to a source of emergency braking air pressure. A timing reservoir is in communication with the pilot port of the high capacity transfer valve. A check valve/choke circuit provides parallel connections between a double check valve and the output of the variable load relay valve such that flow from the variable load relay valve passes through a charging choke and opposite flow to the variable load relay valves passes through a dissipation choke.
La présente invention concerne un module de commande de frein de secours pneumatique comprenant une soupape de transfert de grande capacité reliée dans une première position à la sortie de la valve-relais à charge variable et dans une seconde position à une source de pression d'air de freinage de secours. Un réservoir de temporisation communique avec la soupape de transfert de grande capacité. Un circuit clapet de non retour/volet de départ permet des connexions parallèles entre un double clapet de non retour et la sortie de la valve-relais à charge variable, de telle sorte que l'écoulement provenant de la valve-relais à charge variable traverse un volet de départ de remplissage et un écoulement opposé qui se déplace en direction des valve-relais à charge variable traverse un volet de départ de dissipation.
Scharpf Robert N.
Schweikert David E.
Wood James A.
Piasetzki Nenniger Kvas Llp
Wabtec Holding Corporation
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