Air-cooled engine flywheel fan rotational debris inlet...

F - Mech Eng,Light,Heat,Weapons – 01 – P

Patent

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F01P 11/12 (2006.01)

Patent

CA 2051042

An air-cooled internal combustion engine having a rotating screen and a blower housing surrounding the screen. A ring is attached to the housing and positioned circumjacent the screen to define a precisely gauged radial clearance gap between the ring and the rotating screen. The ring provides a tortuous entry path for foreign matter entering through the air intake port between the ring and the screen. en. The ring includes a downwardly extending groove into which extends an upwardly turned lip of the rotating screen to form the tortuous path for foreign matter entering through the clearance gap between the inner periphery of the ring and the outer periphery of the main portion of the screen. Large debris and foreign matter entering through the tortuous path is chopped up into small pieces, which may then pass through the cooling fins.

Moteur à combustion interne refroidi à l'air muni d'une grille rotative et d'un boîtier de ventilateur qui entoure la grille. Un anneau est fixé au boîtier et est positionné tout autour de la grille pour définir un écartement radial calibré avec précision entre l'anneau et la grille rotative. L'anneau assure un passage d'entrée d'air tortueux pour les corps étrangers qui pénètrent dans l'orifice d'entrée d'air entre l'anneau et la grille. L'anneau comprend une rainure qui se prolonge vers le bas et dans laquelle s'insère une lèvre de la grille rotative retournée vers le haut formant ainsi le passage tortueux pour les corps étrangers qui pénètrent par l'écartement entre le pourtour intérieur de l'anneau et le pourtour extérieur de la partie principale de la grille. Les gros débris et les corps étrangers qui pénètrent dans le passage tortueux sont déchiquetés en petits morceaux qui peuvent alors passer au travers des ailettes de refroidissement.

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