Variable flow water pump

F - Mech Eng,Light,Heat,Weapons – 04 – D

Patent

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F04D 15/00 (2006.01)

Patent

CA 2405669

A variable-capacity water pump includes a housing having an impeller mounted on a rotatable shaft. The impeller includes a plurality of vanes pivotally coupled between upper and lower shroud and operatively coupled to a pitch plate. As the pump speed increases in response to increasing engine speed, the pitch plate controls the rotation of the impeller vanes about a fixed rivet from a maximum pitch position, toward a minimum pitch position, thereby lowering pump output according to engine cooling requirements.

L'invention concerne une pompe à eau à capacité variable comprenant un boîtier présentant une turbine montée sur un arbre rotatif. Cette turbine comprend plusieurs ailettes couplées de façon pivotante entre la chemise supérieure et la chemise inférieure et couplées de façon fonctionnelle à un plateau de tangage. A mesure que la vitesse de la pompe augmente en réponse à l'augmentation de la vitesse du moteur, le plateau de tangage commande la rotation des ailettes de la turbine autour d'un rivet fixe à partir d'une position de plateau de tangage maximale, vers une position de plateau de tangage minimale, abaissant ainsi la sortie de la pompe en fonction des normes de refroidissement du moteur.

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