Height control valve for vehicle axle/suspension system

B - Operations – Transporting – 60 – G

Patent

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Details

B60G 9/00 (2006.01) B60G 17/052 (2006.01)

Patent

CA 2614847

A height control valve for an air spring of an air-ride axle/suspension system of a heavy- duty vehicle includes a body. The valve body is pneumatically connected to an air leservoir of the vehicle, an air spring, and to atmosphere. A control arm actuates the valve to direct air from the reservoir into the air spring, when air is to be added to the air spring When air is to be exhausted from the air spring, the valve, actuated by the control arm, directs air from the air spring to atmosphere. The valve includes a throttle assembly that can regulate the rate of pneumatic flow from the air spring to atmosphere when the vehicle is loaded and the air spring is in an extended condition A throttle assembly can also be used to regulate the rate of pneumatic flow from the air reservoir to the air spring.

L'invention concerne une valve de commande de hauteur pour le ressort pneumatique du système de suspension d'essieu à suspension pneumatique d'un véhicule utilitaire lourd qui comprend un corps. Le corps de valve est relié pneumatiquement à un réservoir d'air du véhicule, au ressort pneumatique et à l'atmosphère. Un bras de commande actionne la valve pour faire passer de l'air du réservoir dans le ressort pneumatique quand il faut ajouter de l'air au ressort pneumatique. Quand il faut évacuer de l'air du ressort pneumatique, la valve, actionnée par le bras de commande, fait passer de l'air du ressort pneumatique à l'atmosphère. La valve comprend un ensemble d'étranglement qui peut réguler le débit de l'écoulement pneumatique du ressort pneumatique vers l'atmosphère quand le véhicule est chargé et le ressort pneumatique est en état de dilatation. On peut aussi utiliser un ensemble d'étranglement pour réguler le débit de l'écoulement pneumatique du réservoir d'air vers le ressort pneumatique.

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