Disclosed is an active chamber engine including a cylinder fed with compressed air, a piston, a cylinder head which includes an intake duct, an intake orifice, an intake valve, wherein the volume of the cylinder is divided into an included active chamber and an expansion chamber and the torque and the speed of the engine are controlled by the opening and closing of the intake valve characterized in that the intake valve moves in the direction opposite to the flow direction of the pressurized gas stream in its opening direction and is held closed on a seat by a return spring in its closing position, and that the axial forces acting on the intake valve resulting from the pressure in the intake duct and in the cylinder are permanently balanced.
COMPRESSED-AIR ENGINE COMPRISING AN INTEGRATED ACTIVE CHAMBER AND WITH ACTIVE DISTRIBUTION AND COMPRISING A BALANCED EXHAUST VALVE FOR CYLINDER DEACTIVATION
The invention relates to an engine comprising an active chamber (CA), the engine comprising: a cylinder (1) supplied with compressed air; a piston (2); a cylinder head (6) that comprises an exhaust pipe (8); an exhaust opening (7); and an exhaust valve (9), wherein the volume of the cylinder (1) is divided into an integrated active chamber (CA) and an expansion chamber (CD), and the torque and the speed of the engine are controlled by the opening and the closing of the exhaust valve (9), characterised in that, in its opening direction, the exhaust valve (9) moves in the opposite direction to that of the flow of the pressurised gas stream and, in its closed position, it is held closed on a seat (20) by a return spring (13), and in that the axial forces exerted on the exhaust valve (9) which result from the pressure prevailing in the exhaust pipe (8) and in the cylinder (1) are permanently balanced.
The invention relates to an engine with an active chamber (CA) comprising a cylinder (1) supplied with compressed air, a piston (2), a cylinder head (6) that comprises an intake pipe (8), an intake opening (7), an intake valve (9), in which the volume of the cylinder (1) is divided into an integrated active chamber (CA) and an expansion chamber (CD) and the torque and the speed of the engine are controlled by the opening and the closing of the intake valve (9), characterised in that, in its opening direction, the intake valve (9) moves in the opposite direction to the flow of the pressurised gas stream and, in its closed position, it is held closed on a seat (20) by a return spring (13), and in that the axial forces exerted on the intake valve (9) which result from the pressure prevailing in the intake pipe (8) and in the cylinder (1) are permanently balanced.
F04B 9/12 - Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being elastic, e.g. steam or air
4.
Compressed-air engine with an integrated active chamber and with active intake distribution
An active chamber engine, includes at least one piston (2) slidingly mounted in a cylinder (1) and operating according to a three-phase thermodynamic cycle including an isobaric and isothermal transfer, a polytropic expansion with work and an exhaust at ambient pressure, which is preferably supplied with compressed air contained in a high-pressure storage tank (12), in which the volume of the cylinder (1) swept by the piston is divided into an active chamber (CA) and an expansion chamber (CD), and in which the compressed air is used to move the intake valve (9) in order to open and then close the intake duct, making it possible to supply the active chamber of the engine, the compressed air having been used for the actions then being reused in the engine to produce additional work.
F01L 3/00 - Lift valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing facesParts or accessories thereof
5.
COMPRESSED-AIR ENGINE WITH AN INTEGRATED ACTIVE CHAMBER AND WITH ACTIVE INTAKE DISTRIBUTION
The invention proposes an active chamber engine, comprising at least one piston (2) slidingly mounted in a cylinder (1) and operating according to a three-phase thermodynamic cycle comprising an isobaric and isothermal transfer, a polytropic expansion with work and an exhaust at ambient pressure, which is preferably supplied with compressed air contained in a high-pressure storage tank (12), in which the volume of the cylinder (1) swept by the piston is divided into an active chamber (CA) and an expansion chamber (CD), and in which the compressed air is used to move the intake valve (9) in order to open and then close the intake duct, making it possible to supply the active chamber of the engine, the compressed air having been used for said actions then being reused in the engine to produce additional work.
F01L 9/02 - Valve-gear or valve arrangements actuated non-mechanically by fluid means, e.g. hydraulic
F01L 3/00 - Lift valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing facesParts or accessories thereof
F01B 17/00 - Reciprocating-piston machines or engines characterised by use of uniflow principle
6.
Self-pressure-regulating compressed air engine comprising an integrated active chamber
An engine with an active chamber, having at least one piston (2) mounted in a cylinder (1) in a sliding manner and driving a crankshaft (5) via a slider-crank device (3, 4) and operating according to a four-phase thermodynamic cycle includes: an isothermal expansion without work; a transfer—slight so-called quasi-isothermal expansion with work; a polytropic expansion with work; and an exhaust at ambient pressure, preferentially supplied by compressed air contained in a high-pressure storage tank (12), through a buffer capacity, called a working capacity (11), which is expanded at an average pressure, called a working pressure, in a working capacity, preferentially through a dynamic pressure-reducing device (13), wherein the active chamber is included in the engine cylinder, the cylinder volume being swept by the piston and divided into two separate parts, a first part forming the active chamber (CA) and a second part forming the expansion chamber (CD).
The invention relates to an engine with an active chamber, comprising at least one piston (2) mounted in a cylinder (1) in a sliding manner and driving a crankshaft (5) by means of a slider-crank device (3, 4) and operating according to a four-phase thermodynamic cycle comprising: an isothermal expansion without work; a transfer - slight so-called quasi-isothermal expansion with work; a polytropic expansion with work; and an exhaust at ambient pressure, preferentially supplied by compressed air contained in a high-pressure storage tank (12), through a buffer capacity, called a working capacity (11), which is expanded at an average pressure, called a working pressure, in a working capacity (11), preferentially through a dynamic pressure-reducing device (13), characterised in that the active chamber (CA) is included in the engine cylinder, the cylinder volume (1) being swept by the piston and divided into two separate parts, a first part forming the active chamber (CA) and a second part forming the expansion chamber (CD).
The invention relates to a multimode engine comprising an included active chamber, having a cylinder (1) and a piston (2) that divides the cylinder into an active chamber (CA) and an expansion chamber (CD), and in which: compressed air contained in a tank (12) directly feeds the intake of the engine cylinder (1); the included active chamber (CA) is filled at a constant admission pressure at each engine revolution, said admission pressure decreasing as the pressure in the tank decreases; the volume of the included active chamber (CA) increases progressively as the pressure in the tank (12) decreases; means enable not only the admission opening and conduit (7) to be opened essentially at the top dead centre of the stroke of the piston, but also the modification of the duration and/or the angular sector of the admission, in addition to the opening passage section; and the volume of the included active chamber (CA) is dimensioned for maximum storage pressure, and is then progressively increased, resulting in a self-pressure regulating engine.
The invention relates to a powered ground vehicle (10), in particular for city use, that comprises: two side rear driving wheels (44) defining a rear axle (A1) of the powered vehicle, each being connected in rotation with a variable-speed pressurised-air engine and being steered by the driver (20) acting on a piloting member for varying the torque applied to each of the rear wheels by the associated engine; at least one additional non-guided device (52) for pressing the vehicle against the ground and located longitudinally at the front of the rear driving axle (A1); a pressurised air tank (48) defining the supply source of the two pressurised-air engines; a front seat (24) for the driver; and a rear loading space (16).
12 - Land, air and water vehicles; parts of land vehicles
39 - Transport, packaging, storage and travel services
Goods & Services
Agricultural machine; compressed air engines; compressed air machines; alternators; current generators; safety current generators; compressors (machines). Automobiles; motor coaches; motor buses; camping cars; boats; trucks; ships; tractors; vehicles for locomotion by land, by water or by rails; motor cars; engines for land vehicles; transmissions for land vehicles. Rental of automobiles, vehicles, motor cars, boats.
