Patent ID: 7603941
Filing Date: 2009-10-20
Classification: F03C,G10L

Abstract:
1. A hydraulic mechanism comprising a cam and a cylinder block suitable for rotating relative to each other about an axis of rotation, wherein the cam has n cam lobes, n being a positive integer and an angular spacing between two communication orifices of the same cylinder is substantially equal to a multiple of 360°/n, the cylinder block having a plurality of cylinders connected via cylinder ducts to communication orifices disposed in a communication face of the cylinder block, pistons slidably mounted in the cylinders being suitable for co-operating with the cam, the mechanism further comprising a fluid distributor, constrained in rotation with the cam about the axis of rotation, and having a distribution face which is provided with distribution orifices comprising orifices suitable for being connected to a feed duct and orifices suitable for being connected to a discharge duct, said distribution face and said communication face facing each other so as to put the communication orifices into communication with the distribution orifices as the cylinder block and the distributor rotate relative to each other, at least certain cylinders being connected to at least two communication orifices spaced apart angularly so that, when a first communication orifice of such a cylinder communicates with a first distribution orifice connected to one of the feed duct and the discharge duct, a second communication orifice of the same cylinder communicates with a second distribution orifice connected to said one of the feed duct and the discharge duct.