19results about "Special engines" patented technology

The invention relates to a heat pump, wherein: at least one of the at least two thermal-energy storage systems is configured to store thermal energy in the form of heat at a temperature between +100° C. and +800° C., at least one of the at least two thermal-energy storage systems is configured to store thermal energy in the form of cold at a temperature between −100° C. and +150° C.; and at least one thermal-energy release system is configured to release heat and / or cold separately or in parallel over time, or at least one thermal-energy release system is configured to operate in a parallel release mode that may be alternated with an operation mode of separate release of heat and / or cold over time.

The present invention relates to a heat pump, at least one of the at least two thermal energy storage systems is configured to store thermal energy in a hot form at a temperature between +100 ° C and +800 ° C; at least one of the at least two thermal energy storage systems is configured to store thermal energy in cold form at a temperature between -100°C and +150°C; at least one thermal energy emission system is configured to emit heat and / or cold, either separately or in parallel, over time; or At least one thermal energy emission system is configured to operate in a parallel emission mode, which can be alternated over time with an operating mode of separate emission of heat and / or cold.

The invention relates to a multi-temperature double-acting piston (201), which comprises a peripheral sealing ring (220), a lower hot crown (226) and / or an upper hot crown (232), and translates in a cold cylinder (204) of a heat engine (202) which has a lower yoke (213) and an upper yoke (214), said piston (201) comprising a central piston pin (210), the lower piston rod (211) of which passes through the lower yoke (213) to be connected to power transmission means (205) housed in a transmission housing (206), and the upper piston rod (212) of which passes through the upper yoke (214) in order to open into a cooling and piston lubrication chamber (217), wherein a lubrication-cooling gallery (227) arranged in said pin (210) places said chamber (217) in communication with said housing (206) via an internal piston volume (228).

An alternative heat source for an engine with an elongated compartment with first and second ends, a directed energy device capable of sending a pulse of photonic energy to a focal point within the first end of the compartment, an intake allowing for the entry of a gas into the elongated compartment, an exhaust allowing for the exit of the gas from the elongated compartment, and a piston capable of moving within the elongated compartment between the first and second ends. The pulse of photonic energy at the focal point heats the gas and causes a corresponding expansion of the gas in the elongated compartment, driving the piston toward the second end of the elongated compartment, where the piston movement can be translated into motive force. The same principle can work with a rotary chamber, or a dual chambered linear system.

One aspect of the invention relates to a regulation system (100) comprising: a microelectromechanical system (200) called "MEMS", comprising a base (210); at least one thermal micromachine (300) configured to operate according to a Stirling cycle, comprising: an expansion volume (310) delimited in part by a first deformable membrane (130); a rear volume (330) separated from the expansion volume (310) by the first deformable membrane (130); the base (210) of the MEMS (200) delimiting in part the rear volume (330). Figure to be published with the abstract: Figure 1

One aspect of the invention relates to a regulation system (100) comprising: - a micro-electro-mechanical system (200) or "MEMS", comprising a base (210); - at least one thermal micromachine (300) configured to operate according to a Stirling cycle, comprising: - an expansion volume (310) delimited in part by a first deformable membrane (130); - a rear volume (330) separated from the expansion volume (310) by means of the first deformable membrane (130); wherein the base (210) of the MEMS (200) partially delimits the rear volume (330).

The present invention relates to a Carnot and reversed Carnot applied combined engine which uses a Carnot engine using a cryogenic working medium (nitrogen or argon, etc.), and in which a spent gaseous working medium is repeatedly used by being re-liquified again using a multi-stage reversed Carnot heat pump cooling engine (general refrigerant, ethylene, LNG (methane), nitrogen, and argon, etc.).

An alternative heat source for an internal combustion engine with an elongated compartment with first and second ends, a directed energy device capable of sending a pulse of photonic energy to a focal point within the first end of the compartment, an intake allowing for the entry of a gas into the the elongated compartment, an exhaust allowing for the exit of the gas from the elongated compartment, and a piston capable of moving within the elongated compartment between the first and second ends. The pulse of photonic energy at the focal point heats the gas and causes a corresponding expansion of the gas in the elongated compartment, driving the piston toward the second end of the elongated compartment, where the piston movement can be translated into motive force. The same principle can work with a rotary chamber, or a dual chambered linear system.

An engine assembly (1) is provided with a split-cycle internal combustion engine (2) having a compression section (3) and an expansion section (4) and with a cooling circuit (41) for circulating a heat-exchange fluid; said fluid has a boiling temperature such that at least a fraction of the fluid changes phase from liquid to vapour flowing through the expansion section (4) of the engine (2), when the latter operates in steady conditions; the circuit (41) comprises a turbine (50) arranged downstream of the engine so as to receive vapour and produce mechanical energy from the expansion of the vapour.

The present invention relates to a heat pump, at least one of the at least two thermal energy storage systems is configured to store thermal energy in a hot form at a temperature between +100 ° C and +800 ° C; at least one of the at least two thermal energy storage systems is configured to store thermal energy in cold form at a temperature between -100°C and +150°C; at least one thermal energy emission system is configured to emit heat and / or cold, either separately or in parallel, over time; or At least one thermal energy emission system is configured to operate in a parallel emission mode, which can be alternated over time with an operating mode of separate emission of heat and / or cold.

The invention relates to a heat pump, wherein: - at least one of the at least two thermal-energy storage systems is configured to store thermal energy in the form of heat at a temperature between +100°C and +800°C, - at least one of the at least two thermal-energy storage systems is configured to store thermal energy in the form of cold at a temperature between -100°C and +150°C; and - at least one thermal-energy release system is configured to release heat and / or cold separately or in parallel over time, or - at least one thermal-energy release system is configured to operate in a parallel release mode that may be alternated with an operation mode of separate release of heat and / or cold over time.

A system for energy conversion including a closed cycle engine having a piston body defining a hot side and a cold side and having a piston assembly movable within the piston bod. An electric machine is operatively coupled with the piston assembly and is operable to generate electrical power when the piston assembly is moved within the piston chamber. A control system includes one or more sensors operable to detect a piston movement characteristic of the piston assembly movable within the piston body. A controller is communicatively coupled with the one or more sensors and a controllable device. The controller is configured to determine a control command based at least in part on data received from the one or more sensors. The control command is selected based at least in part to cause the electric machine operatively coupled with the piston assembly to generate a preselected electrical power output.

A micro heat engine for utilizing temperature differential for high efficiency heat conversion, may include a housing have a hot side and a cold side, a plurality of pistons arranged within the housing, each extending from the hot side to the cold side; and a plurality of regenerators, each configured to be arranged between two adjacent pistons and configured to store heat generated as working gas moves within the adjacent pistons.

The object of the present invention is to provide a dual-fuel engine supply system and control method using BOG, which includes a dual-fuel engine, an LNG supply system, a BOG cold energy utilization system, a BOG combustion system, an ethanol reforming hydrogen production system, and an intake system; the LNG supply system includes a storage tank, a pressure sensor, a submersible pump, valves, a heat exchanger, and a buffer tank; the BOG cold energy utilization system includes valves, a heat exchanger, a compressor, and an expander; the BOG combustion system includes a dual-fuel engine, a generator, a storage battery, and electrical equipment; the ethanol reforming hydrogen production system includes an ethanol storage tank, valves, a high-temperature reaction furnace, and a hydrogen storage tank; the intake system includes a mixer, a turbine, and a compressor. The present invention can process the surplus BOG and utilize its cold energy and chemical energy; at the same time, using the heat of the exhaust gas after BOG combustion, reform ethanol to obtain hydrogen, and mix it with natural gas to inhibit the misfire and knocking phenomena of the dual-fuel engine.

A system including a closed cycle engine having a piston body defining a hot side and a cold side and having a piston assembly movable within the piston body. An electric machine is operatively coupled with the piston assembly. A control system includes one or more sensors operable to detect a piston movement characteristic of the piston assembly movable within the piston body. A controller is communicatively coupled with the one or more sensors and a controllable device. The controller is configured to determine a control command based at least in part on data received from the one or more sensors. The control command is selected based at least in part to cause the electric machine operatively coupled with the piston assembly to generate a preselected electrical power output. The controller provides the determined control command to the controllable device. The controllable device is operable to control an input to an engine working fluid disposed within the piston body.

A micro-heat engine that performs highly efficient heat conversion using a temperature difference may include a housing having a high-temperature side and a low-temperature side, a plurality of pistons disposed within the housing and each extending from the high-temperature side to the low-temperature side, and a plurality of regenerators, each configured to be positioned between two adjacent pistons and configured to store heat generated when the working gas moves between the adjacent pistons.

A system for energy conversion, the system including a closed cycle engine defining a hot side and a cold side, a heater loop positioned at least in part in a heat exchange relationship with the hot side of the closed cycle engine for imparting thermal energy thereto, and a hot side heat exchanger positioned along an intake line of the heater loop, wherein the heat loop has a heat recovery loop operable to recover heat from the hot side and return the recovered heat to the hot side, and wherein the heat recovery loop has a recirculation loop in fluid communication with the intake line for recirculating heating working fluid to the hot side heat exchanger.

The invention relates to the technical field of energy storage, and discloses a multi-cycle cascade-based high-temperature cross-Carnot battery system, which comprises an absorption subsystem for realizing waste heat absorption and release through solution circulation and coupling with a medium-temperature heat / cold storage unit to adjust medium-temperature energy storage; the steam compression cycle subsystem realizes low-temperature refrigeration cycle through a multi-stage compression-expansion process of an organic working medium to form low-temperature cold energy storage; the Brayton reverse circulation subsystem breaks through the temperature limitation of a heat storage medium through reverse circulation compression and expansion of a gas working medium, and energy is converted into high-temperature heat energy to be stored; and the Stirling cycle subsystem is used for directly converting the stored high-temperature heat energy and low-temperature cold energy into electric energy through a temperature difference driving mechanism and outputting the electric energy. The novel large-temperature cross-Carnot battery system provided by the invention meets the demand of cross-space-time scheduling of source (namely source)-load (namely load), and stabilizes the peak-valley difference caused by the electricity load.