Patent ID: 6269806
Filing Date: 2001-08-07
Classification: F02B,F02F,F02M,Y02T

Abstract:
An intake and exhaust device with multiple sections of specific geometry for an internal combustion engine, for the purpose of optimizing the efficiency of said engine, the engine being of the type comprising at least one cylinder within which a piston moves, said cylinder receiving an air-fuel fresh gas mixture via an intake system or channel incorporating at least one relative usual intake valve, from said cylinder there emerging spent gas fed to an exhaust pipe via an exhaust system or channel, said channel incorporating at least one relative usual exhaust valve, said device comprising sectioning means located within one of said channels where said air-fuel gas mixture moves the improvement comprisingwherein said sectioning means are structured and arranged for mounting either within the intake channel or the exhaust channel, the mounting being operated without any modification of said sectioning means, the sectioning means being fixed to the selected channel;said sectioning means structured and arranged to divide the channel where they are arranged into at least two ducts without modifying the length of the channel thereby allowing the retrofitting of said sectioning means to existing engines,said sectioning means structured and arranged to increase the transit velocity distribution of the gas flow through the channel by tending to make it uniform and speeding up the slowest gas thread by virtue of the dragging action generated on the slowest gas thread by the fastest gas threads,said sectioning means structured and arranged to maintain a turbulence level of said gas flow substantially constant,said sectioning means structured and arranged to modify the pressure and flow rate of the gas flow so as to improve cylinder filling and/or cylinder emptying, and wherein said sectioning means comprise at least an element through which the gas flows and which creates within said channel a first gas flow along said channel wall and at least a second gas flow which is directed substantially along the axis of said channel and wherein said element is at least one conical or frusto-conical element which is axially holed.