Rotary engine and method for determining engagement surface...

Details Rotary engine and method for determining engagement surface... Rotary engine and method for determining engagement surface...

F - Mech Eng,Light,Heat,Weapons

01

C

F01C 3/08 (2006.01)

Patent

CA 2300420

An improved rotary engine and method for determining the contours of the sealing surfaces thereof. The improved engine provides for maintaining a predetermined, optimal gap between the sealing surfaces during rotation. The gap may be parallel or angled, and may be positive or negative so as to form an interference engagement. The rotors of the engine may be provided with mirror-image sealing surfaces so as to prevent development of excessive back-lash and clearance, and also to permit efficient reverse operation. The sealing surfaces may also be provided with recesses for interrupting the seal at predetermined points in the rotational cycle, for enhanced wear characteristics and/or to accommodate abrasive or shear-sensitive fluids.

Moteur rotatif (10) amélioré et procédé permettant de déterminer les contours de ses surfaces d'étanchéité (24, 34). Ce moteur permet de maintenir, durant la rotation, un espace optimal (IG) prédéterminé entre ses surfaces d'étanchéité. Cet espace peut être parallèle ou oblique, positif ou négatif, de façon à former un contact avec interférence. Les rotors (112, 114) du moteur peuvent présenter des surfaces d'étanchéité en miroir (160, 162, 166, 168), qui empêchent l'apparition d'un jeu et d'un espace mort excessifs et qui permettent un fonctionnement en sens inverse efficace. Les surfaces d'étanchéité (200, 212) peuvent également présenter des évidements (208), qui permettent d'interrompre le contact au niveau de certains points du cycle de rotation, d'améliorer les caractéristiques d'usure et/ou d'adapter le moteur à des fluides abrasifs ou sensibles au cisaillement.

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