Abstract:
An internal combustion engine (10) comprises an engine block (12) defining a cylinder (14) having a longitudinal axis A. A piston (16) is arranged slidably within the cylinder 14 and an impeller 18 is arranged at one end of the cylinder (14). The impeller (18) is rotatably mounted on a shaft (30), which extends out of the cylinder (14) and which is driven in rotation by rotation of the impeller (18). The engine further comprises an anti- rotation formation (20) to prevent the piston rotating about a longitudinal axis of the cylinder and a swirl-inducing vane (38) arranged on the face of the piston which faces the end of the cylinder at which the impeller is arranged. Combustion gas generated by combustion of a fuel in the cylinder between the piston and the impeller is caused to swirl by reaction with the swirl-inducing vane and the swirling combustion gases, in turn, cause the impeller to rotate.
Abstract:
Various embodiments of the present invention are directed toward a linear combustion engine, comprising: a cylinder having a cylinder wall and a pair of ends, the cylinder including a combustion section disposed in a center portion of the cylinder; a pair of opposed piston assemblies adapted to move linearly within the cylinder, each piston assembly disposed on one side of the combustion section opposite the other piston assembly, each piston assembly including a spring rod and a piston comprising a solid front section adjacent the combustion section and a gas section; and a pair of linear electromagnetic machines adapted to directly convert kinetic energy of the piston assembly into electrical energy, and adapted to directly convert electrical energy into kinetic energy of the piston assembly for providing compression work during the compression stroke.
Abstract:
Eine Stromgeneratoranlage (1) mit einem asynchronen Generator (2) und einem Antrieb über Freikolben-Boxermotoren (19) wird beschrieben. Die Freikolbenmotoren (5) besitzen eine besonders robuste und wirkungsvolle Bauart, insbesondere im Hinblick auf die Umwandlung der linearen Bewegung des Freikolbens (22) in ein Drehmoment zum Antrieb des 10 Generators (2), die in verschiedenen Varianten vorgestellt wird.
Abstract:
In a pneumatic engine provided with a piston (2), a piston rod (3) and a piston slide parallel and capable for example of driving piston pump used for atomizing or spraying paints, the slide (13) is actuated by the piston rod (3) towards the end of each stroke of the piston (2) by means of an inversion device. The inversion device comprises an actuating member which effects a reciprocating motion between two stops (18, 19) fixed on the slide. In order to accelerate the inversion of the slide as well as to simplify and reduce the required force for the inversion of the slide, the inversion device comprises only one lever (21) of which the free end is connected to the piston rod (3) by means of a traction spring (29). This freed end of the lever (21) is the actuating member which give pulses to the slide (13) upon running against the stop (18, 19) with individual adjustment. The lever may be a handle supported on both sides and of which the central part forms the actuating member.
Abstract:
A free piston device (100), comprising: a housing (110) with a cylindrical inner wall having a first wall opening (131) and a second wall opening (132); a cylindrical piston (150) movable in axial direction (L) and rotatable around its longitudinal axis (L); the piston (150) comprising a first skirt (151) forming a first chamber (171), said first skirt (151) having at least a first opening (153) in the form of a hole through the wall of the skirt for allowing passage of a fluid directly into or out of said chamber (171); control means (181, 182) for controlling axial and angular movement of said piston (150); sensing means for providing signals related to the axial position (p) and/or the angular position (ϕ) of the piston (150); a digital control unit for rotating the piston (150) around its longitudinal axis (L) in synchronism with its axial movement.
Abstract:
Moteur à air comprimé et pompe comprenant un tel moteur La présente invention concerne un moteur à air comprimé (10) comprenant un piston (20) et un boîtier (15), le piston (20) étant reçu dans le boîtier et divisant le boîtier en deux chambres primaires (165,170) de volume variable. Ce moteur comprend un premier clapet d'alimentation directe d'une première chambre primaire (165) parmi les deux chambres primaires et un deuxième clapet d'alimentation directe de l'autre chambre primaire (170), ces deux clapets étant chacun mobiles par rapport à au moins un siège respectif. Le premier clapet et le deuxième clapet sont montés sur une même tige (30) mobile par rapport au boîtier (15) selon une direction (A6) parallèle à la direction (Z) de déplacement du piston, et la tige est configurée pour être déplacée entre une première position et une deuxième position par des moyens de déplacement activés par le piston.
Abstract:
An internal combustion engine for providing a linear reciprocating movement of an output shaft along a longitudinal axis. The engine has a double sided cylinder that is bounded by an engine head at each side of the cylinder. An exhaust unit is positioned at each side of the cylinder. A piston is positioned within a cylinder inner space and freely slides with respect to the cylinder along the longitudinal axis. Two piston rods are aligned with the longitudinal axis. Each piston rod is connected at a different side of the piston. Each of the piston rods has exhaust openings.
Abstract:
A combustion management system for a combustion engine having at least one cylinder with an intake means comprising a sliding port valve and an intake solenoid poppet valve arranged in series and provided at a distance from the cylinder ends, and an exhaust solenoid poppet valve provided at each of the cylinder ends, the system comprising: a valve control means for controlling the intake solenoid poppet valve and the exhaust solenoid poppet valve independently of the position of the piston moving within the cylinder to control the compression and expansion ratios, wherein the piston moves over and past the intake means during each stroke.
Abstract:
A gas driven oscillator (10) comprising an engine (11) having a cylinder (12) and a pair of expansion chambers (13, 14) on either side of a floating piston (15) adapted to reciprocate within the cylinder (12). The piston (15) is mounted on a piston rod (16) extending through the cylinder (12) and into a compressor (17). Compressed air is delivered from a tank (20) to the engine (11) via a pair of valves (22, 23) mounted on an adjustment screw and slidably disposed on the piston rod (16). The spacing between the valves (22, 23) can be adjusted in order to vary the amplitude of the piston (15) within the cylinder (12). The piston rod (16) includes spaced slots (24, 25) which alternately align with passages inside the respective valves (22, 23) to deliver a pulse of compressed air to the respective chambers (13, 14) of the cylinder (12). Mercury is added to or discharged from a tank (42) which is rigidly secured to piston rod (16) to vary the inertia of the oscillator (10).
Abstract:
An internal combustion engine may include an engine block, a cylinder defining a combustion chamber, and a piston in the cylinder, The piston may travel in a first stroke from one end to an opposite end of the cylinder, and may be sized relative to the cylinder to enable an expansion stroke portion of the first stroke while the piston travels under gas expansion pressure, and a momentum stroke portion of the first stroke for the remainder of the first stroke following the expansion stroke portion. A piston rod portion may be connected to the piston and extend from a location within the combustion chamber to an area external to the cylinder, A recess in the piston rod portion may form a passageway to continuously communicate gas flow between the combustion chamber and the area external to the cylinder when the piston is in the momentum stroke portion.