Abrégé

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.

Classes IPC  ?

• F01B 17/02 - Machines motrices
• F01B 25/10 - Aménagements ou adaptations des soupapes d'admission ou d'échappement du fluide énergétique
• F01L 1/14 - PoussoirsTiges-poussoirs
• F01L 1/18 - Bras basculants ou leviers
• F01L 9/16 - Moyens pneumatiques

Abrégé

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.

Classes IPC  ?

• F01B 17/02 - Machines motrices

Abrégé

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.

Classes IPC  ?

• F01B 17/02 - Machines motrices
• F01B 25/10 - Aménagements ou adaptations des soupapes d'admission ou d'échappement du fluide énergétique
• F01L 9/16 - Moyens pneumatiques
• F04B 9/12 - "Machines" ou pompes à piston caractérisées par les moyens entraînants ou entraînés liés à leurs organes de travail les moyens étant à fluide le fluide étant compressible, p. ex. de la vapeur ou de l'air

Abrégé

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.

Classes IPC  ?

• F01L 9/02 - Systèmes de distribution à soupapes, à commande non mécanique à fluide, p.ex. hydraulique
• F01B 17/00 - "Machines" ou machines motrices à piston alternatif caractérisées par l'application du principe de l'écoulement à sens unique
• F01B 17/02 - Machines motrices
• F01L 3/00 - Soupapes de levage, c.-à-d. dispositifs obturateurs dont l'élément de fermeture possède au moins une composante de mouvement d'ouverture ou de fermeture perpendiculaire à la surface d'obturationÉléments ou accessoires de ces soupapes

Abrégé

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.

Classes IPC  ?

• F01L 9/02 - Systèmes de distribution à soupapes, à commande non mécanique à fluide, p.ex. hydraulique
• F01L 3/00 - Soupapes de levage, c.-à-d. dispositifs obturateurs dont l'élément de fermeture possède au moins une composante de mouvement d'ouverture ou de fermeture perpendiculaire à la surface d'obturationÉléments ou accessoires de ces soupapes
• F01B 17/00 - "Machines" ou machines motrices à piston alternatif caractérisées par l'application du principe de l'écoulement à sens unique

Abrégé

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).

Classes IPC  ?

• F02C 5/00 - Ensembles fonctionnels de turbines à gaz caractérisés par un fluide énergétique produit par une combustion intermittente
• F01K 13/00 - Dispositions générales ou processus généraux de fonctionnement des installations complètes d'ensembles fonctionnels de machines à vapeur
• B60K 16/00 - Dispositions relatives à l'alimentation des ensembles de propulsion sur les véhicules en énergie tirée des forces de la nature, p. ex. du soleil ou du vent
• F01B 29/10 - Machines motrices
• F01B 17/02 - Machines motrices
• F02B 21/00 - Moteurs caractérisés par des chambres d'accumulation de l'air
• F02M 31/04 - Appareils pour le traitement thermique de l'air comburant, du combustible ou du mélange air-combustible pour chauffer l'air comburant ou le mélange air-combustible
• F02M 31/16 - Autres appareils pour chauffer le combustible
• F24J 2/42 - Systèmes à chaleur solaire non prévus ailleurs

Abrégé

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).

Classes IPC  ?

• F01B 17/02 - Machines motrices
• F02G 1/02 - Ensembles fonctionnels de moteurs à gaz chauds à déplacement positif du type à cycle ouvert
• F24S 90/00 - Systèmes à chaleur solaire non prévus ailleurs

Abrégé

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.

Classes IPC  ?

• F02B 21/00 - Moteurs caractérisés par des chambres d'accumulation de l'air
• F02M 31/04 - Appareils pour le traitement thermique de l'air comburant, du combustible ou du mélange air-combustible pour chauffer l'air comburant ou le mélange air-combustible
• F02M 31/16 - Autres appareils pour chauffer le combustible
• F01B 17/02 - Machines motrices
• F01D 13/02 - Couplage à fluide énergétique commun entre "machines" ou machines motrices

Abrégé

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).

Classes IPC  ?

• B60K 3/00 - Agencement ou montage des ensembles de propulsion à vapeur ou à gaz sous pression
• B60K 6/12 - Les moteurs primaires comportant des moteurs à combustion et des moyens d'accumulation d'énergie mécanique ou fluide au moyen d'un accumulateur à fluide rechargeable
• B60K 7/00 - Disposition du moteur dans ou jouxtant une roue motrice

Produits et 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.