摘要:
A high efficiency combined cycle internal combustion and steam engine includes a cylinder with a combustion chamber outward of a piston, a cylinder cap slideably mounted within the piston and a steam expansion chamber inside the piston. The cap can be heated to reduce condensation of steam. Steam remaining when a steam exhaust valve closes can be recompressed prior to admitting the next charge of steam. One valve or a pair of steam inlet valves connected in series act in cooperation to help maximize efficiency. The amount of steam admitted each stroke is regulated by shifting the phase of one steam admission valve of a pair to vary their overlap for determining the steam mass admitted each cycle. Other valves balance steam displacement with the steam generator output to use steam more efficiently.
摘要:
A high efficiency combined cycle internal combustion and steam engine includes a cylinder having a piston mounted for reciprocation therein with an internal combustion chamber outward of the piston, a fixed cylinder cap sealingly and slideably mounted within the piston and a steam expansion/recompression chamber inside the piston adjacent the cylinder cap. The cylinder cap can be unheated or heated externally to reduce condensation of steam entering the steam chamber from a steam generator fired by waste combustion heat. Steam remaining in the cylinder when a steam exhaust valve closes at the top center position is recompressed during an inward stroke of the piston up to admission pressure prior to admitting the next charge of steam. One valve or a pair of retractable steam inlet valves connected in series within the cylinder cap act in cooperation with steam recompression and clearance volume to achieve an effective zero steam chamber clearance and a gain in mean Rankine cycle temperature to maximize efficiency. The amount of steam admitted each outward stroke is continuously regulated, e.g. by shifting the phase of one steam admission valve of a pair to vary their overlap for determining the steam mass admitted during each cycle to reduce specific fuel consumption. Other valves balance steam displacement with the steam generator output to use steam more efficiently. Engine coolant can be evaporated in a combustion chamber cooling jacket to form steam which is then superheated in a combustion exhaust manifold.
摘要:
A combination internal combustion and steam engine includes a cylinder having a piston mounted for reciprocation therein with an internal combustion chamber and a steam chamber in the cylinder adjacent the piston and at least one steam exhaust port positioned to communicate with the steam chamber through the wall of the cylinder for exhausting steam at a location in the cylinder wall adjacent to an engine cylinder cap surface that is heated externally to assist in reducing chilling or condensation of steam entering the steam chamber from a boiler fired by waste combustion heat. The invention also permits steam admitted from a steam chest jacketing the cylinder cap to be exhausted from the engine when the steam chamber is in an expanded state whereupon residual steam is then recompressed prior to admitting the next charge of steam with the stream in the steam chamber being heated directly by the combustion chamber as well as by heat from the steam chest. An I.C. exhaust powered heater is a part of an I.C. exhaust manifold which functions as an afterburner with supplemental air injection for promoting combustion of unburned exhaust constituents to superheat steam that is piped through it to the steam chest. The invention provides valves for balancing steam engine displacement with boiler output and for cylinder compounding with a boiler, heat exchange and control arrangement for efficiently recovering waste heat.
摘要:
A combination internal combustion and steam engine includes a cylinder having a piston mounted for reciprocation therein with an internal combustion chamber and a steam chamber in the cylinder adjacent the piston and at least one steam exhaust port positioned to communicate with the steam chamber through the wall of the cylinder for exhausting steam at a location in the cylinder wall adjacent to an engine cylinder cap surface that is heated externally to assist in reducing chilling or condensation of steam entering the steam chamber from a boiler fired by waste combustion heat. The invention also permits steam admitted from a steam chest jacketing the cylinder cap to be exhausted from the engine when the steam chamber is in an expanded state whereupon residual steam is then recompressed prior to admitting the next charge of steam with the stream in the steam chamber being heated directly by the combustion chamber as well as by heat from the steam chest. An I.C. exhaust powered heater is a part of an I.C. exhaust manifold which functions as an afterburner with supplemental air injection for promoting combustion of unburned exhaust constituents to superheat steam that is piped through it to the steam chest. The invention provides valves for balancing steam engine displacement with boiler output and for cylinder compounding with a boiler, heat exchange and control arrangement for efficiently recovering waste heat.
摘要:
An engine having a Rankine cycle steam expander includes an engine cylinder, a cylinder head and a piston in which clearance is zero together with a negligible amount of compression, such that pressure in the clearance volume is as low as to approximate ambient pressure or condenser pressure existing at the end of a return stroke when the clearance is zero. These provisions for clearance and compression working together simultaneously provide a thermal efficiency which substantially exceeds all prior known Rankine operating cycles and is referred to as “zero clearance with zero compression”. The steam admission valve is raised slightly by the piston to establish a zero clearance whereupon a steam assist then moves the steam admission valve determinately and quickly to a fully open position.
摘要:
A high efficiency combined cycle internal combustion and steam engine includes a cylinder and a piston with an internal combustion chamber outward of the piston, a fixed cylinder cap and a steam expansion chamber inside the piston. The cylinder cap can be heated to reduce condensation of steam entering from a steam generator fired by waste combustion heat. Following exhaust, residual steam can be recompressed prior to admitting the next charge of steam. A wrist pin connected to an inner end of the piston skirt inwardly of the cylinder cap is coupled to a connecting rod secured to a crankshaft. One valve or a pair of steam inlet valves are connected to communicate in series within the cylinder cap inside the piston. The steam mass admitted is regulated to reduce fuel consumption. Coolant can be superheated in the combustion exhaust manifold.
摘要:
A thin sheath of flexible, flaccid material is introduced through openings in the body of an animal or human patient to permit surgical tools or fluids to be inserted and removed, or debris removed, during surgeries anywhere in the body to protect the tissue of the body from the instruments used. The sheath is inserted by an obturator which holds the sheath thereon by suction through an aperture in the obturator at its distal end. Once the sheath is inserted, suction is removed to release the sheath. Then a balloon on the distal end of the sheath is expanded to hold the sheath in place in the body while the obturator is removed. The sheath then remains in place with the balloon holding the distal end in the open position to enable fluids to flow through the sheath. After a procedure, the balloon is deflated and the sheath removed.
摘要:
The coolant in the cooling jacket of a dual cycle internal combustion steam engine is intentionally maintained at an elevated temperature that may typically range from about 225° F.-300° F. or more. A non-aqueous liquid coolant is used to cool the combustion chamber together with a provision for controlling the flow rate and residence time of the coolant within the cooling jacket to maintain the temperature of the coolant at a selected elevated temperature that is substantially above the boiling point of water but below the boiling point of the coolant. The coolant is passed from the jacket through a heat exchanger in a first circuit to transfer heat to a vaporizable working fluid such as water and is then returned. An optional second intrajacket perturbation circuit within the engine can be used to disrupt and disperse pockets of vapor that may tend to form before damaging hot spots can develop around the combustion chamber. A cooling jacket design is tailored to extract heat at the highest possible temperature from each heat transfer zone as by having the coolant follow a circuitous helical pathway to achieve more efficient and improved heat transfer from the combustion chamber to the cooling medium.
摘要:
A dispenser is described for pouring liquids from a container such as a liquor bottle. It includes a discharge passage having an outlet nozzle at one end and a dual purpose valve element slideably and sealably mounted within the passage. The valve element includes a duct through it that extends between opposite sides of the passage. A movable sealing body, e.g. a ball in the duct is adapted to move under the influence of gravity to a first position for sealing the duct when the dispenser is inverted. The sealing body moves under the influence of gravity from its sealing position to an open position when the dispenser is upright allowing the valve element to slide quickly to its starting position at the end of the passage.
摘要:
An RF communications system assures selection of the optimum frequency for establishing a communications path between two stations by employing scanning transceivers which may be operated on a plurality of channels having programmed frequencies wherein the programmed frequencies in one transceiver may be automatically changed from another transceiver after establishing a communications path over one of the channels and, when calling another transceiver, the calling transceiver automatically reverts to the same channel last used for communications contact with the called transceiver.