An intake manifold relief valve

F - Mech Eng,Light,Heat,Weapons – 02 – M

Patent

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Details

F02M 35/104 (2006.01) F02F 7/00 (2006.01) F16K 17/04 (2006.01) F02M 35/10 (2006.01)

Patent

CA 2125388

An intake manifold relief valve comprising a valve body (13) having at least two openings, one opening being an inlet (22) for gas and another opening being an outlet (23) for gas to relieve excess pressure, a piston (8) for opening and closing said gas inlet (22) and containing an orifice hole (21) to maintain a constant pressure on both sides of the piston (8) said valve body (13) also cooperating with said piston (8) to form an enclosed gas chamber the size of which is decreased as said piston (8) moves to open said valve, a piston spring (5) applying a force on said piston (8) in addition to that provided by the gas pressure within said chamber to maintain it in a closed postion under normal conditions, said piston (8) moving to open said gas inlet (22) when excess pressure with the manifold overcomes the force of said piston spring (5), thereby allowing gas to escape through said valve outlet (23); as the pressure is equalized within the valve through said orifice hole (21), said piston spring (5) will force said piston (8) back to closed position; the size of said orifice (21) being selected to determine the pressure at which the piston (8) useats and the valve opens. The spring (5) is used to return the piston (8) to a closed position and close the valve as soon as the pressure transient has passed through the outlet (23) and the oxygen in the atmosphere entering throught the exhaust opening cannot cause a secondary explosion in the valve.

Une soupape de décharge de tubulure d'admission comprenant un boîtier de soupape (13) muni d'au moins deux ouvertures, l'une étant une entrée (22) de gaz et l'autre une sortie (23) de gaz afin d'éliminer l'excès de pression, un piston (8) pour ouvrir et fermer ladite entrée de gaz (22) et contenant un trou d'orifice (21) pour maintenir la pression constante des deux côtés du piston (8), ledit boîtier de soupape (13) coopérant également avec ledit piston (8) pour former une chambre à gaz fermée dont la taille diminue à mesure que ledit piston (8) se déplace vers ladite soupape ouverte, un ressort de piston (5) appliquant une force sur ledit piston (8) en plus de celle exercée par la pression du gaz à l'intérieur de ladite chambre pour le maintenir en position fermée dans des conditions normales, ledit piston (8) se déplaçant vers ladite entrée de gaz ouverte (22) quand un excès de pression dans la tubulure surpasse la force dudit ressort de piston (5), permettant ainsi au gaz de s'échapper par ladite soupape de débit (23); à mesure que la pression s'égalise à l'intérieur de la soupape par le biais dudit trou d'orifice (21), ledit ressort de piston (5) forcera le piston (8) à revenir à la position fermée; la taille dudit orifice (21) étant choisie pour déterminer la pression à laquelle ledit piston (8) se repose et la soupape s'ouvre. Le ressort (5) est utilisé pour retourner le piston (8) à une position fermée et pour fermer la soupape dès que la pression transitoire a traversé le débit (23) et l'oxygène ambiant qui pénètre par l'ouverture de la soupape de décharge ne peut pas causer une explosion secondaire dans la soupape.

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