Abstract:
Culasse de moteur alternatif à combustion interne fonctionnant selon le cycle à 4 temps et componant une soupape d'admission et une soupape d'échappement par cylindre. Ces deux soupapes, de forme annulaire, sont concentriques entre elles et avec le cylindre. La soupape d'échappement est située à l'intérieur de la soupape d'admission et s'appuie sur celle-çi. L'ouverture et la fermeture des deux soupapes sont commandées par une seule came par cylindre par l'intermédiaire d'une interface hydraulique alimentée sous pression et assurant le rattrapage automatique de l'usure.
Abstract:
A two piece intake or exhaust valve for internal combustion engines comprising an inner and an outer valve which can be designed with orbicular heads. The inner valve including a stem of a smaller outside diameter than the outer valve. The outer valve including a hollow stem large enough to accept the inner valve, and also including a valve seat in the center of its bottom face to seat the inner valve. The head, or base, being equipped with one or more vents which communicate between the intake port and the combustion chamber and being releasably opened and sealed off by the inner valve. The vented valve unit incorporating an independent actuation means by way of pressure differentials created by the induction cycle, and/or directional inertia factors of the mechanically controlled valve element.
Abstract:
An intake and exhaust valve system deployed in an internal combustion engine that improves available charge flow through the engine, provides improved charge turbulence and swirl of charge during each intake stroke for better mixture, provides for multiple independent fuel mixing at the cylinder (12), allows the use of concentric intake and exhaust valves (22, 24) also providing for balanced charge entry exit symmetry. The intake and exhaust valve system includes using a plurality of two or more concentric valve assemblies per cylinder, each intake valve (22) being mounted within a hollow exhaust valve (24), the multiple intake and exhaust valve (22, 24) providing optimum, flow area entering and exiting the cylinder (12). Two or more charge passage openings (14) per cylinder strategically disposed enhances the uniform distribution of charge per unit time. Utilization of the present invention greatly increases the fuel efficiency of the engine, reduces emission pollution without sacrificing engine horsepower.
Abstract:
Methods and systems are provided for reducing exhaust energy delivered to a turbine of a turbine-generator coupled to a split exhaust engine system in order to reduce turbine over-speed conditions and/or to reduce a generator output. In one example, a method may include deactivating a blowdown exhaust valve utilized to deliver a blowdown portion of exhaust energy to the turbine.
Abstract:
This invention relates to an internal combustion engine combusting hydrocarbon fuel having a lithium conditioned combustion chamber for reduced carbon oxide engine emissions. The condition chamber is formed by combusting therein a hydrocarbon fuel containing a lithium salt.
Abstract:
An intake and exhaust valve system (10) for an internal combustion engine having a combustion chamber (19) within a cylinder (13) closed at one end by a cylinder head (17). A cavity (25) is provided in the cylinder head opening onto the combustion chamber through a first port (27). The valve system (10) has first and second valves one of which is an intake valve (31) movable between open and closed conditions for controlling intake fluid flow into the combustion chamber (19) and the other of which is an exhaust valve (33) movable between open and closed conditions for controlling exhaust gas flow from the combustion chamber. The first valve (31) comprises a valve head (35) sealingly engagable with the first port (27) and a skirt structure (31). The skirt structure (37) is in sliding and sealing engagement with a tubular wall structure (49) within the cavity (25) whereby the skirt structure and wall structures cooperate to divide the cavity (25) into an inner cavity section (51) and an outer cavity section (53) surrounding the inner cavity section. A first flow passage (26) communicates with the outer cavity section (53) and a second flow passage (28) communicating with the inner cavity section (51). The second valve (33) is disposed in the first valve (31) for opening and closing a second port (61) in the first valve (31) for controlling fluid flow between the combustion chamber (19) and inner cavity section (51) wherein the skirt structure (37) has a first axial length and the tubular wall structure (49) has a second axial length with the first axial length being less than the second axial length. This arrangement provides a concentric intake and exhaust valve system with reduced reciprocating mass.
Abstract:
A valve assembly for an internal combustion engine coupled to a cylinder and a crankshaft and having a valve and an electrical magnetic actuator, wherein the electrical magnetic actuator is interconnected to the valve. A command mechanism is coupled to the valve assembly and the crankshaft. The command mechanism receives signals from the crankshaft to produce an electrical signal, wherein the electrical signal is intermittently sent to the valve assembly. The valve assembly utilizes the electrical signals to intermittently move the valve between an open and closed position of the cylinder.
Abstract:
A concentric valve includes a first cylindrical housing and a concentric second cylindrical housing, with the second cylindrical housing defining an internal combustion intake valve mounted within an associated overhead valve assembly. An exhaust valve is mounted concentrically of the second housing, wherein the first housing directs intake flow through the intake valve and the exhaust valve directing flow coaxially of the first and second cylindrical housing through an annular array of windows in the first cylindrical housing to direct exhaust flow exteriorly thereof.
Abstract:
An intake and exhaust valve system deployed in an internal combustion engine that improves available charge flow through the engine, provides improved charge turbulence and swirl of charge during each intake stroke for better mixture, provides for multiple independent fuel mixing at the cylinder, allows the use of concentric intake and exhaust valves also providing for balanced charge entry exit symmetry. The intake and exhaust valve system includes using a plurality of three or more concentric valve assemblies per cylinder, each intake valve being mounted within a hollow exhaust valve, the multiple intake and exhaust valves providing optimum flow area entering and exiting the cylinder. Three or more charge passage openings per cylinder strategically disposed enhances the uniform distribution of charge per unit time. Utilization of the present invention greatly increases the fuel efficiency of the engine, reduces emission pollution without sacrificing engine horsepower.
Abstract:
A four-stroke piston engine in which air is drawn into a cylinder while rotary motion about the cylinder axis is imparted to the air. Fuel may be blown/injected into the air during its rotation in the cylinder while the fuel supply is located on the axis of the cylinder and supplies at least one jet of fuel initially directed radially outwardly and which jet of fuel in cooperation with the rotating air forms at least one helical stream of mixture within the cylinder, preferably during the compression stroke, which is transformed into a coherent mixture zone enclosed by a ring of air upon completion of compression. The piston may have a recess so that when the piston approaches top dead center an enriched zone is formed in the lower region of the compression space which can be ignited by electrodes disposed in said lower region of the compression space. The stratified charge in the cylinder of the stratified-charge engine comprises a mixture zone of comparatively small volume and a mixture zone of comparatively large volume which may have different fuel concentrations plus a thermally insulating zone of air.