Intake and exhaust device with multiple sections of specific geometry, for internal combustion engines
AssigneeCentro Richerche Tecnologiche S.r.l.
InventorStefano Dellarosa
Life of this patent
Estimating the term…
Abstract
A device for optimizing the efficiency of an internal combustion engine of the type having at least one cylinder within which a piston moves. The cylinder receives an air-fuel fresh gas mixture via an intake system or channel incorporating at least one intake valve. From the cylinder, spent gas emerges and is fed to an exhaust pipe via an exhaust system or channel. The channel incorporates at least one exhaust valve. Within one of the channels where the spent gas moves, the gas passage section is adjustable so as to modify the velocity and pressure of the gas flow directed toward the cylinder and exhaust pipe.
Claims16
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 comprising
- wherein 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.
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 comprising
- wherein 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 are 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 are 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 are structured and arranged to maintain a turbulence level of said gas flow substantially constant,
- said sectioning means are 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 the sectioning means modifying the section of the channel consist of at least one body having a cross-section whose dimensions vary in the direction of the gas flow passing through the relative channel.
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 comprising
- wherein 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 are 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 are 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 are structured and arranged to maintain a turbulence level of said gas flow substantially constant,
- said sectioning means are 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 are mounted by mounting means, within said system or channel, for permitting the movement of the sectioning means within the system or channel in which they are mounted, either along the longitudinal axis of the system or channel or about it, said mounting means being an annular ring or sleeve structured and arranged to conform to the perimeter of the channel on which said sectioning means is integrally formed with said ring.
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 comprising
- wherein 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 are 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 are 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 are structured and arranged to maintain a turbulence level of said gas flow substantially constant,
- said sectioning means are 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 half-cone frustum element.
Dependencies are inferred from the claim text.