1286results about "Propulsion based emission reduction" patented technology

The disclosure relates to fluid working devices including reciprocating internal combustion engines, compressors and pumps. A number of arrangements for pistons and cylinders of unconventional configuration are described, mostly intended for use in reciprocating internal combustion IC engines operating without cooling. Included are toroidal combustion or working chambers, some with fluid flow through the core of the toroid, pistons reciprocating between pairs of working chambers, tensile valve actuation, tensile links between piston and crankshaft, energy absorbing piston-crank links, crankshafts supported on gas bearings, cylinders rotating in housings, injectors having components reciprocate or rotate during fuel delivery. In some embodiments pistons mare rotate while reciprocating. High temperature exhaust emissions systems are described, including those containing filamentary material, as are procedures for reducing emissions during cold start by means of valves at reaction volume exit. Compound engines having the new engines as a reciprocating stage are described. Improved vehicles, aircraft, marine craft and transmissions adapted to receive or be linked to the improved IV engines are also disclosed.

Marine LNG carrier and method of operating the marine LNG carrier. The LNG carrier carries LNG in at least one tank. Gas composed of evaporated LNG within the at least one tank is removed. The gas is fed to at least one gas consuming prime mover of the LNG carrier. Power is provided with the at least one gas consuming prime mover. This Abstract is not intended to define the invention disclosed in the specification, nor intended to limit the scope of the invention in any way.

An unmanned, autonomous, waterborne vehicle (500) for marine use capable of operating on and below the surface of water, said vehicle (500) including an enclosed hull (501) having a payload bay (506), a hybrid propulsion system having energy collection means (504) in the form of a wing sail (503) covered with photovoltaic cells and energy storage means (511) for utilising at least solar energy and wind energy, a plurality of sensors (508, 514) for detecting predetermined environmental parameters and a communications system (509, 515) for transmitting data from said sensors (508, 515) to and for receiving command signals from one or more remote stations and / or cooperating vehicles.

A method of programming and setting parameters for a computer unit that regulates the interface between the operator of a marine vessel and the vessel's electric generation and propulsion systems. The invention describes the regulation of energy producing devices, energy storage devices and drive motors and propellers in both propulsion and regeneration modes. This invention simplifies and automates most of the operation of marine electric, hybrid electric, or diesel electric propulsion because the only controls requiring operator intervention are three generator modes: OFF, AUTO and ON, an alarm, an override switch and one or more throttle(s). This helm control can be duplicated in different areas of the vessel. All automatic modes required to regulate forward movement, reverse, emergency power, zero drag, propeller freeze and regeneration are all controlled by a logic using a combination of generator mode, the position of the throttles, the speed and the stored parameters of the vessel.

To access the inexhaustible energy source like seas and oceans we need to learn how to convert its wave motion to the customized power for our ships, for our existing littoral settlements and our future ocean settlements. Here is an attempt to develop method of the conversion the wave energy to power with floating means based on a gyroscope strong capability to resist against the outer force moment trying to tilt it to any side.The gyroscope is used as the fulcrum torque dynamic supporting instead traditional static base used in the issued devices. Alternate force moment created by the waves and transmitted to the gyroscope (via the floating body and the wave energy converter) inducts alternative gyro precession so as the gyroscope axis hesitates about mean position. This is important because it allows the gyroscope to keep dynamic fulcrum torque in unlimited time.The few gyroscope precession control devices and methods have been developed to compensate other reasons enforcing the mean gyro axis to drift from initial plumb.Also here are developed the new ship architecture with the separated floating gyro section. The wagging propulsor driven by the pitching and with strokes amplified by the fulcrum gyro section, the spring moment generator for the gyroscope drift compensation, non gyroscope floating power station able to derive, convert, accumulate and transmit wave energy to consumer also have been developed here.

A marine power distribution arrangement includes a turbine-driven AC generator which supplies AC power at a frequency of 240 Hz through a switchgear unit to a transformer and a first power converter by which the power is converted to a variable frequency, variable voltage AC output for ship propulsion and to a second power converter by which the AC power is converted to a fixed voltage, fixed AC frequency or DC power to supply the ship service loads. A battery backup power supply may be switched in an emergency. In another embodiment four turbine-driven AC generators and two emergency power supplies are provided to drive two propulsion shafts as well as to supply the ship service loads.

An apparatus including an alternator that is drivable by an engine for producing a first AC electric current, a rectifier in electrical communication with the alternator for producing a DC electric current, an inverter in electrical communication with the rectifier for producing a second AC electric current where the second AC electric current having an acceptable frequency and / or voltage, and the inverter in electrical communication with one or more electric loads responsive to the second AC electric current, and an energy storage device that is able to electrically couple to the alternator, rectifier, and / or inverter.

A rotary liquefied natural gas boil-off compressor has a series of compression stages. A gas passage passes through the series of compression stages. The gas passage extends through and is in heat exchange relationship with cooling means in the form of indirect heat exchangers. Each of the heat exchangers is cooled by LNG supplied from a pipeline. Flow control valves are provided for controlling the flow of LNG to the heat exchangers respectively. The valves are controlled in response to temperature sensors respectively, so as to maintain the inlet temperature of each of the compression stages at a chosen sub-ambient temperature or between chosen sub-ambient temperature limits.

Aspects of an embodiment of a check valve turbine assembly include a rotation platform having an axis of rotation, a vertical member concentrically secured to the rotation platform about the axis of rotation, a rotatable sail assembly attached to the vertical member that includes a frame, a hinge beam, and a rotatable sub-sail assembly. The sub-sail assembly includes a stem beam, a sub-sail grid frame attached to the stem beam, and a plurality of flaps rotatably attached to the sub-sail grid frame and configured to move between a closed position and an open position relative to the sub frame. Aspects of a marine check valve turbine include a free-floating platform structure configured with an upper surface at or near a water surface and a vertical member secured to the platform structure about an axis of rotation and configured to extend from the upper surface of the platform structure.

In an electronic apparatus having a touch panel and a chassis for supporting the touch panel, pair of fixing cushions are fixed to the touch panel along edges, which are parallel to each other, of the touch panel. Pair of vibration absorbing cushions are fixed to the chassis parallel to each other. A fixing flame is disposed between the touch panel and the chassis and fixed to the fixing cushions and the vibration absorbing cushions. Thus, the touch panel is supported against the chassis by the fixing cushions, the fixing frame and the vibration absorbing cushions. When the touch panel vibrates, the vibration absorbing cushions prevent transmission of the vibration from the touch panel to the chassis through fixing cushions and the fixing frame. Accordingly, the vibration of the touch panel hardly exercises a harmful influence on components mounted on the chassis.

The invention discloses a wave energy and solar energy driven unmanned monitoring ship for a marine environment, which comprises a ship body and an unmanned control system, wherein the ship body has a shape of rigid inflatable boat; the unmanned control system comprises a ground remote control system and a ship-loaded system which are coupled with each other through a wireless data link; the ground remote control system comprises a remote control computer, a wireless network bridge and corresponding top-layer application software; the ground remote control system is used for receiving, analyzing and displaying a ground remote control command and data; a serial port of the remote control computer is connected to the wireless network bridge; and the ship-loaded system comprises a navigationcontrol subsystem, a communication subsystem, a navigation information sensing and collecting subsystem, a wave energy and solar energy power generating and supplying subsystem and a data collecting subsystem. No diesel motor is required in the wave energy and solar energy driven unmanned monitoring ship, a wave energy generating system and a solar energy generating device of the ship are directly used for supplying power, the quality of output electric energy is stable and the electromagnetic compatibility is excellent, thereby ensuring the normal work of ship-loaded equipment under a complex marine environment.

The invention relates to an aerodynamic profile element for energy production using traction force, in particular for driving watercraft. The invention further relates to a launch and retrieval arrangement for a profile element, and a drive arrangement for a watercraft including the profile element and the launch and retrieval arrangement.

A hybrid fuel / electric powered watercraft includes an electronic turning machine (ETM), and internal combustion engine, and a propulsion system, which are operatively connected to each other, preferably via one or more clutches. An electronic control unit (ECU) controls the ETM, clutch(es), and engine. At low speeds, the ECU disengages at least one clutch and solely uses the ETM to power the propulsion unit and propel the watercraft. At high speeds, the ECU engages the clutch and uses both the engine and the ETM or just the engine to power the propulsion system. When the watercraft's battery discharges, the ECU operates the ETM in a generator mode and runs the engine to charge the battery. The watercraft can also include a shore button feature that selectively limits / governs the speed of the watercraft. A clutch may be used to avoid driving the propulsion system when the engine is idling or being started.

The wave powered (WP) propulsion systems developed in great amount for boats are not in use because of small effectiveness caused by rocking process reducing propellor stroke relatively water. Submarines and special quasi-dipped watercrafts deprived of this disadvantage. Their bodies keeps stable the propellors mounted on conning towers or special props owing to the body's great mass. This factor multiplies the WP propellor effectiveness meeting Navy and Merchant fleet requirements. The invention includes designs of: spare WP propulsion plant embedded into submarine diving rudders or folded into pockets of the submarine sail, quasi-dipped watercraft carrying multiple foil WP propulsion system, quasi-dipped tug towing submerged tank, self optimized foil propellor. Experiences with submarine models equipped by the WP propellers have shown excellent results. Expected velocities for submarine 4-7 knots, for the quasi-dipped watercraft 5-15 knots. The folded spare WP propulsion plant does not interrupt submarine functioning.

A gas supply arrangement of a marine vessel being adapted to carry liquefied gas in its cargo tank having an ullage space section and a liquid phase section, which arrangement utilizes the gas as fuel to provide power for the vessel, the arrangement comprising a first gas supply line provided for processing the natural boil-off gas formed in the cargo tank, a second gas supply line which connects the cargo tank and the gas main supply line and which is provided with at least a pump for raising the pressure of the liquid gas and for pumping it forward. The second gas supply line is provided with a gas reservoir having an ullage space section and liquid phase section, and that the arrangement is provided with a first duct section of the second gas supply line connecting the liquid phase section of the cargo tank and the liquid phase section of the gas reservoir, and being provided with the pump, and that the arrangement is additionally provided with a return line connecting the liquid phase section of the reservoir and the cargo tank being provided with a control valve for controllable returning liquid gas back into the cargo tank.

A liquefied gas treatment system includes: a first stream of boil-off gas, which is generated from the liquefied natural gas in the cargo tank and is discharged from the cargo tank; a second stream of the boil-off gas, which is supplied as fuel to the engine in the first stream; and a third stream of the boil-off gas, which is not supplied to the engine in the first stream. The first stream is compressed in a compressor and is then branched into the second stream and the third stream. The third stream is liquefied by exchanging heat with the first stream in a heat exchanger, so that the boil-off gas is treated without employing a reliquefaction apparatus using a separate refrigerant.

A system and a method for providing power to a marine vessel and, more particularly to a tugboat is disclosed. The system includes diesel engines and generators and batteries which can be charged using power supplied by the generators, shore power or regenerated power. The tugboat is operated utilizing battery power only and the generators are used to provide additional power if needed or to recharge the batteries.

For any directed sea waves the rocking propelled ship can reach high speeds if it utilizes an sea waves energy by means of 1. A rocking propulsor, which is a couple of hydrofoils kept elastic cross by pivots on the extreme points of streamline narrow keel-rocker, extended far out off long sizes of the ship and thus wags hydrofoils vertically with a speed and an amplitude being sufficient for its proper work; 2. A "pendulum design" of a rocking propelled ship, described by a light wide body with weight, concentrated in a middle lowest ship's part and having a vertical keel with a heavy bob. This design provides the highest efficiency of an energy transmission from waves to ship rocking. In case of need to increase ship's speed some more its rocker should be rigged by an on-board oscillator, which is a central heavy flywheel, which is alternately twisted up to speed by a serve motor in both directions on cross axle in time (resonance) of ship rocking. In order to accelerate and change revolution directions without energy loss the flywheel is supplied by spring returners. If the ship is assigned to navigate in both sea state cases (high or calm) the oscillator is mounted into the rocking propulsor, which is attached to the ship bottom with a hinger. It can be locked to the bottom to be swinged by a rocking ship hull to propell the ship by wave generated rocking motion. It can be unlocked to be swinged by the board oscillator undependently from the ship hull to propel the ship in case of calm sea.

Method of cyclic anchoring itinerant (CAI) propulsion uses a phenomenon of anchored float horizontal motion as wave rises. The method repeats a cycle: Detaching the anchor from an immobile medium as a wave begins descent; Accelerating it in new position as the wave descends; Reattaching it to said medium as a wave rises. The medium can be railway or water. Respectively a trolley or a glider works as the anchor. To drag as anchor the glider orients perpendicular to the link. Improvements: adding an auxiliary propeller accelerating the glider, connecting bow and aft gliders with a single boom, making it telescopic, adding a small submarine hull for permanent observation water space, scientific researches, entertainment. The method allows to reequip watercrafts to all-weather, ocean going watercrafts with an unlimited range of operation. These solutions can be widely used in marine rescue remedies. Experimental models of CAI propulsion system show remarkable results.

A regenerative fuel cell is combined with a combustion engine such as a Pulse Detonation Engine (PDE) to create a closed-loop power generation system. Stored hydrogen and oxygen are used by the regenerative fuel cell, and by the combustion engine, in which the reaction of the hydrogen and oxygen produces water in the gas phase (steam). The steam is used to generate work from a turbine shaft, which is used to drive a propulsion system for the marine vessel. After the steam passes through the turbine, the steam is cooled back to liquid water by a condenser, and stored with the water produced by the regenerative fuel cell. The stored water can be converted back into hydrogen and oxygen by using electrical power external to the closed-loop system. After regeneration of the water into hydrogen and oxygen, the closed-loop power system would be ready for operation again.

In short, the Eolic Marine Electrical Generator "GEEM" is an extraordinary invention used for capturing the huge impulse force of water or wind, to generate mechanical energy and to transform the mechanical energy into electrical energy, clean and ecological, without consuming vital oxygen thanks to the invention of immense split, self-regulating panels, radially fixed in dihedral angle to a rotary central shaft, panels which capture by shock the inexhaustible energy of the wind, the waves or the ocean currents; or fixed on rotary or flying machines of high speed, with panels formed at the same time by oscillating vanes that at a certain time of a turn of 360° will face the natural energy as a single group or panel, capturing therefrom the impulse force and converting it into rotary movement through the central rotary shaft. Said vanes in other rotation, by oscillation, will divide the panel and will align themselves with the natural vector, permitting its free passage, eliminating the turning resistance of the panel against water or wind and generating a constant rotation movement, independent of the direction of water or wind, and then transforming said mechanical energy into electrical energy by existing conventional means. The invention will allow men to renew their resources and to obtain electrical energy from anywhere in the planet such as cities, countryside, deserts, forests, mountains, seas, floating cities or spaces such as the Arctic and the Antarctic, neither polluting the environment, nor depending on costly networks or non-renewable inputs. The invention will also generate electrical energy on fleets, land vehicles or airship without consuming non-renewable fuel or destroying oxygen. Moreover, this invention replaces the internal combustion engines by eolic electrical motors, changing the scenery of the modern world and recovering the ozone lost in the Antarctic. And this invention will also be used when men in future colonize planets, without rivers or seas but with plenty of wind, to generate electrical energy without polluting this new vital space of the human race.

A hybrid propulsion system includes a main diesel engine for driving the marine turbine and an electric motor. The electric motor has a nominal output that constitutes at least 20% of the nominal output of the main diesel engine. The electric motor remains continuously switched on and maintains, together with a variable-pitch propeller, the main diesel engine at a favorable operating point. The combination of the main diesel engine and the electric motor also allows for a more economical design or operation of the propulsion system.

A solar powered watercraft including a pontoon section, a strut section, a deck section, and a solar canopy section is provided. The canopy section comprises a headliner layer, a ventilation space, and means for receiving solar radiation. The solar canopy may further comprise a means for flowing air through the ventilation space that includes a fan, a thermostatic switch, a photocell, air inlet ports, and air exhaust ports. The aft section of the pontoon, moreover, may possess a dual tapered design that reduces water friction and wake. The watercraft further includes means for containing a battery pack that, in turn, comprises means for removing heat and gaseous byproducts from the containing means. The containing means is either made integral with the pontoon or is attached to the pontoon's outer surface. The watercraft may possess an aft-oriented trim, which stabilizes the craft and reduces the effect of water forces.

The cooling device according to the invention comprises, in each of the stator recesses which contain windings, a cooling tube located in the longitudinal direction of the recess and supplied with cooling fluid. The cooling tube is located in the inlet portion of each of the recesses which is closest to the air gap, and thus constitutes a thermal barrier between the windings of the stator and the permanent magnets carried by the rotor. A device for the external cooling of the stator may be combined with the tubes for cooling the internal portion of the stator.

A wake absorber, wherein an aquatic vehicle with a propulsor mounted on the vehicle and operative to propel the vehicle through a water medium, has a wake absorber mounted on the vehicle aft of the propulsor. The wake absorber includes an artificial muscle surface adapted to be impinged upon by a wake created by the propulsor. The wake absorber further includes electrodes mounted on the artificial muscle surface. Pressure of the wake upon the muscle surface exercises a bending force on the surface, which creates energy that is recovered by the electrodes as electrical power that can be digitized. Energy removed from the muscle surface by the electrodes weakens the wake and renders the wake less pronounced visually and acoustically.