Abstract:
A high efficiency steam engine or gas compressed motor with improved intake and exhaust flow provided by separate pairs of intake (13, 17) and exhaust (14, 16) ports or passages located at both ends of a steam drive cylinder (1) containing a piston (3).In a central section of the cylinder (1) is uniflow or central exhaust steam ports (15). A valve cylinder containing an improved slide valve (5) located adjacent to the drive cylinder provides for timed sealing of intake and exhaust ports during operation. Exhaust is facilitated by the provision of two paths of exhaust from the cylinder and the exhaust ports may be adjusted for a flow volume to meter exhaust steam flow to significantly reduce back pressure only at low speeds of engine.
Abstract:
A free piston internal combustion engine having improved valve timing. A pair of oppositely disposed combustion chamber passageways (34, 36) extending between the combustion chamber (20) and the earth's atmosphere, each have a combustion chamber valve (30, 32) for controlling the passage of gas through the passageways (34, 36). The combustion chamber valves (30, 32) are essentially simultaneously opened and closed to permit independent variation and control of the compression ratio, expansion ratio, and stroke of the engine. When the valves (30, 32) are opened, the combustion chamber (20) is purged or supercharged with combustion supporting air, and closed to initiate compression. Variable control of the piston (16, 18) positions at which the valves (30, 32) are opened and closed permits the engine to operate at a high efficiency over a broad range of power output loading conditions.
Abstract:
The present invention describes two systems (100, 300) for encapsulation of semiconductor dies. Both systems (100, 300) involve attaching an encapsulation spacer (102, 302,3 02a, 302b) having one or more apertures (104, 304) on an associated substrate (150) so that a group of chips is located within the aperture (104, 304). The first system (100) involves dispensing encapsulant (103) directly into an aperture. The second system (300) involves attaching an encapsulant delivery layer (350, 351) onto the encapsulation spacer and discharging encapsulant into an aperture via a recessed gate (308).
Abstract:
A free piston internal combustion engine having improved valve timing. A pair of oppositely disposed combustion chamber passageways (34, 36) extending between the combustion chamber (20) and the earth's atmosphere, each have a combustion chamber valve (30, 32) for controlling the passage of gas through the passageways (34, 36). The combustion chamber valves (30, 32) are essentially simultaneously opened and closed to permit independent variation and control of the compression ratio, expansion ratio, and stroke of the engine. When the valves are opened, the combustion chamber (20) is purged or supercharged with combustion supporting air, and closed to initiate compression. Variable control of the piston positions at which the valves are opened and closed permits the engine to operate at a high efficiency over a broad range of power output loading conditions.
Abstract:
An efficient free-piston internal-combustion engine (802, 811, 832, 14, 114, 314, 614) having an expansion ratio greater than the compression ratio. The engine has a gas bearing (804, 813, 831) and an exhaust temperature in excess of 600 DEG C which are used to operate as a topping cycle for gas turbines, Stirling engines, steam engines, etc. An improved valving system for flexible control of the engine may include the use of a valve actuator (28, 32, 132, 410, 616) in a piston. In one embodiment, a pair of oppositely disposed combustion chamber passageways each have a combustion-chamber valve (132, 410) for controlling the passage of gas through the passageways. Variable control of the piston positions at which the valves are opened and closed permits the engine to operate at a high efficiency over a broad range of power output loading conditions. In another embodiment the combustion chamber and a gas compressor are combined in the same cylinder.
Abstract:
An internal combustion engine includes an engine block, a cylinder defining at least one combustion chamber, and a piston in the cylinder. The piston travels in a first stroke from one end to an opposite end of the cylinder, and is 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 passageway is formed in the piston rod to communicate gas flow between a first combustion chamber and an area external to the cylinder when the piston is in a first position, and to communicate gas flow between a second combustion chamber and an area external to the cylinder when the piston is in a second position.
Abstract:
The present disclosure provides pump apparatuses and systems and methods for operating pump apparatuses for compression of a gas. The pump includes a frame portion, a first and second compression cylinder, a connecting shaft is coupled to a first piston head and the second piston head in the respective compression cylinders and a first compression spring pivotally coupled to the frame portion at a first fixed pivot point and pivotally coupled to the connecting shaft at a first translating pivot point. The pump apparatus includes a second compression spring pivotally coupled to the frame portion at a second fixed pivot point and pivotally coupled to the connecting shaft at a second translating pivot point. The first translating pivot point and the second translating pivot point are configured to translate reciprocally and contemporaneously with the connecting shaft.
Abstract:
A free piston internal combustion engine having improved valve timing. A pair of oppositely disposed combustion chamber passageways extending between the combustion chamber and the earth's atmosphere, each have a combustion chamber valve for controlling the passage of gas through the passageways. The combustion chamber valves are essentially simultaneously opened and closed to permit independent variation and control of the compression ratio, expansion ratio, and stroke of the engine. When the valves are opened, the combustion chamber is purged or supercharged with combustion supporting air, and closed to initiate compression. Variable control of the piston positions at which the valves are opened and closed permits the engine to operate at a high efficiency over a broad range of power output loading conditions.