Motive Fluid Is Vaporized Liquid Patents (Class 60/618)
  • Patent number: 9819038
    Abstract: A power generation system includes a fuel cell including an anode that generates a tail gas. The system also includes a hydrocarbon fuel reforming system that mixes a hydrocarbon fuel with the fuel cell tail gas and to convert the hydrocarbon fuel and fuel tail gas into a reformed fuel stream including CO2. The reforming system further splits the reformed fuel stream into a first portion and a second portion. The system further includes a CO2 removal system coupled in flow communication with the reforming system. The system also includes a first reformed fuel path coupled to the reforming system. The first path channels the first portion of the reformed fuel stream to an anode inlet. The system further includes a second reformed fuel path coupled to the reforming system. The second path channels the second portion of the reformed fuel stream to the CO2 removal system.
    Type: Grant
    Filed: May 31, 2013
    Date of Patent: November 14, 2017
    Assignee: General Electric Company
    Inventors: Andrew Philip Shapiro, Robert James Perry, Matthew Joseph Alinger, Bruce Philip Biederman, Irfan Saif Hussaini, Irina Spiry
  • Patent number: 9777602
    Abstract: A system for controlled recovery of thermal energy and conversion to mechanical energy. The system collects thermal energy from a reciprocating engine (for example, from engine jacket fluid) and may also collect further thermal energy from a natural gas compressor (for example, from compressor lubricating fluid). The collected thermal energy is used to generate secondary power by evaporating an organic propellant and using the gaseous propellant to drive an expander in production of mechanical energy. Secondary power is used to power parasitic loads, improving energy efficiency of the system. A supplementary cooler may provide additional cooling capacity without compromising system energy efficiency.
    Type: Grant
    Filed: September 4, 2009
    Date of Patent: October 3, 2017
    Inventor: Victor Juchymenko
  • Patent number: 9759449
    Abstract: Feedwater to be supplied to a feedwater tank via a feedwater path is passed through a waste heat recovery heat exchanger, a supercooler, and a condenser in sequence. A heat source fluid such as heat source water is passed through an evaporator and the waste heat recovery heat exchanger in sequence. The waste heat recovery heat exchanger is an indirect heat exchanger between the feedwater supplied to the feedwater tank via the feedwater path and the heat source fluid having passed through the evaporator. The supercooler is an indirect heat exchanger between the feedwater supplied to the feedwater tank via the feedwater path and a refrigerant supplied from the condenser to an expansion valve.
    Type: Grant
    Filed: November 6, 2012
    Date of Patent: September 12, 2017
    Assignee: MIURA CO., LTD.
    Inventors: Kazuyuki Ootani, Yasukuni Tanaka, Masanori Takemoto, Rikki Sugiura, Tomoya Oozawa
  • Patent number: 9756793
    Abstract: A combined heat and power system for greenhouse carbon dioxide enrichment purifies carbon dioxide from exhaust gas of the combined heat and power system generating and supplying power and heat by combusting fuel and supplies the purified carbon dioxide to a greenhouse. The combined heat and power system includes a unified pipe system configured to simultaneously transmit hot water and carbon dioxide through a single pipe by dissolving the purified carbon dioxide in a heat transmission medium, a storage system configured to store the carbon dioxide transmitted to demand destinations along with the hot water, and supply unit configured to supply the carbon dioxide transmitted to and stored in the demand destinations depending on a heat and carbon dioxide load condition of a demand destination.
    Type: Grant
    Filed: August 26, 2013
    Date of Patent: September 12, 2017
    Assignee: KOREA INSTITUTE OF ENERGY RESEARCH
    Inventors: Yong Hoon Im, Jae Yong Lee
  • Patent number: 9745881
    Abstract: A system for recycling exhaust heat from an internal combustion engine is based on a recycling type of circulating a working fluid using the exhaust heat from the internal combustion engine. The system may include an EGR line configured to circulate a portion of exhaust gas generated from the internal combustion engine to an intake side, a working fluid circulation line configured to rotate a turbine with a working fluid vaporized by heat transferred from the EGR line, and an EGR side heat exchange unit configured to thermally connect the EGR line to the working fluid circulation line to cool an EGR gas by transferring heat from the EGR gas to the working fluid.
    Type: Grant
    Filed: October 31, 2014
    Date of Patent: August 29, 2017
    Assignee: Hyundai Motor Company
    Inventors: You Sang Son, Sei Young Kim
  • Patent number: 9708935
    Abstract: A parallel motion heat energy power machine and a working method thereof, includes a heat collector, an insulating pipe, a gasification reactor, an atomizer, a cylinder, a piston, a piston ring, an automatic exhaust valve, a cooler, a liquid storage tank, a pressure pump, a push-pull rod, an insulating layer, and a housing. The two cylinders are oppositely arranged on the housing in parallel. The piston is arranged inside the cylinder. The piston is provided with the piston ring. The pistons are arranged on both ends of the push-pull rod. The heat collector is connected to the gasification reactor through the insulating pipe. The atomizer is arranged on the air inlet end of the gasification reactor. The parallel motion heat energy power machine and working method thereof has a high heat-energy conversion efficiency. It is energy-saving, environmentally friendly, and less noisy.
    Type: Grant
    Filed: September 23, 2014
    Date of Patent: July 18, 2017
    Inventor: Yuanjun Guo
  • Patent number: 9702272
    Abstract: A Rankine cycle waste heat recovery system uses a receiver with a maximum liquid working fluid level lower than the minimum liquid working fluid level of a sub-cooler of the waste heat recovery system. The receiver may have a position that is physically lower than the sub-cooler's position. A valve controls transfer of fluid between several of the components in the waste heat recovery system, especially from the receiver to the sub-cooler. The system may also have an associated control module.
    Type: Grant
    Filed: August 6, 2014
    Date of Patent: July 11, 2017
    Assignee: CUMMINS INTELLECTUAL PROPERTY, INC.
    Inventors: Timothy C. Ernst, Christopher R. Nelson
  • Patent number: 9702263
    Abstract: A Rankine cycle device in the present disclosure includes an evaporator as a heater, an expander, a cooler, a first temperature sensor, a second temperature sensor, and a control device. The first temperature sensor detects a temperature of the working fluid flowing from an outlet of the heater to an inlet of the expander in the circuit of the working fluid. The second temperature sensor detects a temperature of the working fluid flowing from an outlet of the expander to an inlet of the cooler. The controller controls a number of rotation of the expander based on a difference between a detected temperature of the first temperature sensor and a detected temperature of the second temperature sensor.
    Type: Grant
    Filed: March 2, 2015
    Date of Patent: July 11, 2017
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Atsuo Okaichi, Osao Kido, Takumi Hikichi, Osamu Kosuda, Noriyoshi Nishiyama, Yoshio Tomigashi, Masaaki Konoto, Subaru Matsumoto, Tetsuya Matsuyama
  • Patent number: 9670836
    Abstract: A drive unit for a motor vehicle that has a combustion machine having an internal combustion engine (10) as well as an exhaust gas system via which exhaust gas can be discharged from the internal combustion engine (10), and has a cyclic device that can be used to convert the thermal energy contained in the exhaust gas into mechanical work in a clockwise thermodynamic cycle, whereby the cycle comprises a heat transfer from the exhaust gas to a working medium in a first heat exchange device, as a result of which the temperature and/or the pressure of the working medium is increased, comprises an expansion of the working medium in an expansion device (30) for generating the mechanical work, and comprises a heat transfer from the working medium to a cooling medium in a second heat exchange device.
    Type: Grant
    Filed: July 9, 2014
    Date of Patent: June 6, 2017
    Assignee: VOLKSWAGEN AKTIENGESELLSCHAFT
    Inventors: Asmus Carstensen, Marcus Dallmann, Jörg Fritzsche, Andreas Herr, Christoph Käppner, Thomas Schulenburg, Artur Semke, Jörg Volkmann
  • Patent number: 9540961
    Abstract: Systems, methods, and apparatuses are directed to monitoring a capacity at which an engine is operating, the engine comprising a turbocharger. It can be determined whether the engine is operating above a threshold capacity. If the engine is operating above a threshold capacity, a closed-loop thermal cycle working fluid can be heated with heated air from the turbocharger. If the engine is operating at or below a threshold capacity, the working fluid can be heated with exhaust from the engine. The heated working fluid can be directed to a turbine generator, which can generate electrical power.
    Type: Grant
    Filed: April 25, 2013
    Date of Patent: January 10, 2017
    Assignee: Access Energy LLC
    Inventors: Herman Artinian, Keiichi Shiraishi
  • Patent number: 9541027
    Abstract: The disclosure relates to a system and method for recovering waste heat to improve the response and fuel economy of a machine. The system includes a heat recovery apparatus and an engine. The heat recovery apparatus has a cold cylinder, a first piston disposed in the cold cylinder, a hot cylinder, a second piston disposed in the hot cylinder, and a regenerator. The first piston and the second piston are in fluid communication with one another via the regenerator. The engine produces heat from multiple sources. A first heat source produced by the engine is thermally coupled to the regenerator and a second heat source produced by the engine is thermally coupled to the hot cylinder. The heat recovery apparatus is configured to convert the heat generated by the first and second heat sources into mechanical energy.
    Type: Grant
    Filed: July 11, 2014
    Date of Patent: January 10, 2017
    Assignee: Caterpillar Inc.
    Inventors: Xinyu Ge, Huateng Yang
  • Patent number: 9341084
    Abstract: Aspects of the invention disclosed herein generally provide heat engine systems and methods for recovering energy, such as by generating electricity from thermal energy. In one configuration, a heat engine system contains a working fluid (e.g., sc-CO2) within a working fluid circuit, two heat exchangers configured to be thermally coupled to a heat source (e.g., waste heat), two expanders, two recuperators, two pumps, a condenser, and a plurality of valves configured to switch the system between single/dual-cycle modes. In another aspect, a method for recovering energy may include monitoring a temperature of the heat source, operating the heat engine system in the dual-cycle mode when the temperature is equal to or greater than a threshold value, and subsequently, operating the heat engine system in the single-cycle mode when the temperature is less than the threshold value.
    Type: Grant
    Filed: October 10, 2013
    Date of Patent: May 17, 2016
    Assignee: Echogen Power Systems, LLC
    Inventors: Tao Xie, Michael Vermeersch, Timothy Held
  • Patent number: 9328632
    Abstract: A Rankine cycle includes an waste-heat recovery device that is configured to exchange heat between cooling water coming out from an engine and exhaust gas exhausted from the engine, a heat exchanger including an evaporator through which the cooling water coming out from the engine flows to recover waste-heat of the engine to refrigerant, and a superheater through which the cooling water coming out from the waste-heat recovery device flows to recover the waste-heat of the engine to the refrigerant, an expander that is configured to generate power using the refrigerant coming out from the heat exchanger, a condenser that is configured to condense the refrigerant coming out from the expander, and a refrigerant pump that is configured to supply the refrigerant coming out from the condenser to the heat exchanger by being driven by the expander. The cooling water coming out from the superheater is returned to the engine after being joined with the cooling water coming out from the evaporator.
    Type: Grant
    Filed: August 14, 2012
    Date of Patent: May 3, 2016
    Assignee: NISSAN MOTOR CO., LTD.
    Inventors: Hiroyuki Nagai, Tomohiko Saitou, Takayuki Ishikawa, Shinichiro Mizoguchi
  • Patent number: 9217338
    Abstract: This disclosure relates to a waste heat recovery (WHR) system and method for regulating exhaust gas recirculation (EGR) cooling, and more particularly, to a Rankine cycle WHR system and method, including a recuperator bypass arrangement to regulate EGR exhaust gas cooling for engine efficiency improvement and thermal management. This disclosure describes other unique bypass arrangements for increased flexibility in the ability to regulate EGR exhaust gas cooling.
    Type: Grant
    Filed: December 23, 2011
    Date of Patent: December 22, 2015
    Assignee: CUMMINS INTELLECTUAL PROPERTY, INC.
    Inventors: Timothy C. Ernst, Dave Morris
  • Patent number: 9181866
    Abstract: An energy recovery and cooling system for a hybrid machine is disclosed. The energy recovery and cooling system can include at least one circuit including at least one pump, at least one condenser, and at least one turbine, as well as a first flow path and a second flow path. The first flow path can be connected in fluid communication with the at least one pump, the at least one condenser, and the at least one turbine. The first flow path can additionally be in thermal communication with at least one internal combustion energy system component of the hybrid machine. The second flow path can be connected in fluid communication with the at least one pump, the at least one condenser, and the at least one turbine. The second flow path can additionally be in thermal communication with at least one electrical energy system component of the hybrid machine.
    Type: Grant
    Filed: June 21, 2013
    Date of Patent: November 10, 2015
    Assignee: Caterpillar Inc.
    Inventors: Jeffrey E. Jensen, William R. Tinker
  • Patent number: 9127573
    Abstract: An arrangement and a method for converting thermal energy to mechanical energy includes a circulation unit (4) a refrigerant in the a circuit (3), an evaporator (6) for the refrigerant, a turbine (9) driven by vaporised refrigerant, a condenser (12) cooling the refrigerant to condense, and an accumulator tank (14) for storage of the refrigerant is not being circulated in the line circuit (3). A control device estimates the degree of filling of the line circuit (3) with refrigerant at which the turbine (9) achieves a substantially optimum effect, and controls the flow of refrigerant between the line circuit (3) and the accumulator tank (14) to achieve the estimated degree of filling the line circuit (3) with refrigerant.
    Type: Grant
    Filed: November 22, 2011
    Date of Patent: September 8, 2015
    Assignee: SCANIA CV AB
    Inventor: Ola Hall
  • Patent number: 9103249
    Abstract: An engine exhaust heat recovery system includes an engine exhaust heat conduit that interacts with a two-phase fluid that exists in liquid and gaseous states within a single closed loop. A first heat exchanger, which may be a boiler, interfaces with and receives heat from the engine exhaust conduit. Exhaust heat energy converts the fluid from the liquid state into the gaseous state for transfer into a heat expander situated downstream of the first heat exchanger. The heat expander utilizes the gaseous heat energy to rotate a flywheel, and a system of clutches is situated and adapted to permit the flywheel to transfer mechanical energy for subsequent, selective production of work upon demand. In one disclosed embodiment, the heat expander may be a high-speed turbine with a rotary power shaft coupled to a transmission and a plurality of clutches adapted to engage and actuate the flywheel.
    Type: Grant
    Filed: February 29, 2012
    Date of Patent: August 11, 2015
    Assignee: Caterpillar Inc.
    Inventor: Jeffrey Edward Jensen
  • Patent number: 9091192
    Abstract: A waste heat recovery system of a vehicle generally comprises a heat source, an air-passage body, and a heat-preservation container. The heat source is provided with a pipe. The air-passage body is coupled to the pipe. The air-passage body defines therein a chamber and at least one passage communicating with the chamber, wherein the chamber communicates with the pipe for collecting waste heat energy transferred by the pipe. The heat-preservation container, being placed above the air-passage body, communicates with the passage of the air-passage body and is provided with multiple heat-transfer elements therein. With the waste heat recovery system, the waste heat energy can be transferred via air from the heat source to the container to enable the container to keep at a lower temperature for food or articles required to be warmed. Furthermore, the waste heat energy enables a conversion module in the chamber to generate electrical power.
    Type: Grant
    Filed: February 1, 2013
    Date of Patent: July 28, 2015
    Inventor: Chung-Chien Chang
  • Patent number: 9074492
    Abstract: An energy recovery arrangement is disclosed for use with an engine. The energy recovery arrangement may include a closed circuit containing a high-pressure working fluid, a first boiler configured to receive waste heat from a first source on the engine, and a second boiler disposed upstream of the first boiler and configured to receive waste heat from a second source on the engine. The energy recovery arrangement may also include an energy extractor disposed at a location downstream of the first and second boilers, a condenser disposed at a location downstream of the energy extractor, and a pump disposed at a location downstream of the condenser and upstream of the first and second boilers. The energy recovery arrangement may further include a recuperator disposed in parallel with the second boiler and configured to transfer heat from working fluid exiting the extractor to working fluid exiting the pump.
    Type: Grant
    Filed: April 30, 2012
    Date of Patent: July 7, 2015
    Assignee: Electro-Motive Diesel, Inc.
    Inventors: Teoman Uzkan, Thomas G. Gallagher
  • Patent number: 9046006
    Abstract: A dual cycle waste heat recovery system includes a high-temperature circuit that utilizes a first working fluid. The first working fluid is heated by a first waste heat source and then expanded through a first expander to produce power. The heat recovery system further includes a low-temperature circuit that utilizes a second working fluid. The low-temperature circuit also includes a first heat exchanger for heating the second working fluid with heat from the first working fluid and a second heat exchanger for heating the second working fluid with heat from a second waste heat source. A control valve selectively controls the flow of the second working fluid to each of the first and second heat exchangers according to a predetermined set of parameters. An expander receives the second working fluid from the first and second heat exchangers and expands the second working fluid to produce power.
    Type: Grant
    Filed: June 21, 2010
    Date of Patent: June 2, 2015
    Assignee: PACCAR Inc
    Inventor: Jason Ritter
  • Publication number: 20150135708
    Abstract: A device for recovering the waste heat energy having a Clausius-Rankine circuit with a line system conveying a working medium via which at least one vaporizer for vaporizing the working medium, an expansion device for expanding the vaporized working medium to produce mechanical work, a condenser for fluidizing the vaporized and expanded working medium as well as a delivery pump for condensing and conveying the working medium through the line system are fluidically connected to one another. A compensation tank supplies additional working medium volume and is connected to a fluid line and can be fluidically separated from the line system via a valve that is controllable via a control device connected to a sensor for detecting working medium temperature and/or pressure, such that a working medium volume is transferred from the compensation tank into the line system or from the line system into the compensation tank.
    Type: Application
    Filed: November 20, 2014
    Publication date: May 21, 2015
    Inventors: Rainer LUTZ, Giovanna MOTISI, Richard Bruemmer
  • Publication number: 20150121866
    Abstract: A system and method for recuperation is provided including a boiler wherein air and exhaust gas recirculation pass through the boiler and are cooled by thermal transfer with a coolant. The system includes an expander receiving coolant from the boiler, a recuperator receiving coolant from the expander, a condenser receiving coolant from the recuperator; a pump pumping coolant from the condenser to a low temperature portion of the boiler, and a valve, which allows coolant to pass directly from the boiler to the recuperator.
    Type: Application
    Filed: May 3, 2012
    Publication date: May 7, 2015
    Applicant: International Engine Intellectual Property Company LLC
    Inventor: Chunyi Xia
  • Patent number: 9021807
    Abstract: In a waste heat utilization arrangement for an internal combustion engine of a motor vehicle including a waste heat utilization circuit in which a working medium is circulated, a pumping device for pressurizing the working medium, an evaporator for vaporizing the working medium by waste heat of the internal combustion engine, an expansion machine for expanding the working medium while extracting mechanical energy therefrom and a condenser for condensing the working medium in a resting state, the waste heat utilization circuit is in communication with a pressure store capable of maintaining a pressure for setting and ensuring a predetermined adjustable minimum pressure of the working medium in the waste heat utilization circuit.
    Type: Grant
    Filed: June 15, 2013
    Date of Patent: May 5, 2015
    Assignee: Daimler AG
    Inventors: Jan Gaertner, Thomas Koch
  • Patent number: 9021808
    Abstract: A Rankine cycle waste heat recovery system associated with an internal combustion engine is in a configuration that enables handling of exhaust gas recirculation (EGR) gas by using the energy recovered from a Rankine cycle waste heat recovery system. The system includes a control module for regulating various function of the internal combustion engine and its associated systems along with the Rankine cycle waste heat recovery system.
    Type: Grant
    Filed: January 10, 2012
    Date of Patent: May 5, 2015
    Assignee: Cummins Intellectual Property, Inc.
    Inventors: Christopher R. Nelson, Timothy C. Ernst
  • Patent number: 9003789
    Abstract: An energy harvesting system for converting thermal energy to mechanical energy includes a heat engine that operates using a shape memory alloy active material. The shape memory alloy member may be in thermal communication with a hot region at a first temperature and a cold region at a second temperature lower than the first temperature. The shape memory alloy material may be configured to selectively change crystallographic phase between martensite to austenite and thereby one of contract and expand in response to the first and second temperatures. A thermal conduction element may be in direct contact with the SMA material, where the thermal conduction element is configured to receive thermal energy from the hot region and to transfer a portion of the received thermal energy to the SMA material through conduction.
    Type: Grant
    Filed: December 30, 2011
    Date of Patent: April 14, 2015
    Assignees: GM Global Technology Operations LLC, Dynalloy, Inc., The Regents of the University of Michigan
    Inventors: Alan L. Browne, Nancy L. Johnson, Paul W. Alexander, John Andrew Shaw, Christopher Burton Churchill, Andrew C. Keefe, Geoffrey P. McKnight, Guillermo A. Herrera, Nilesh D. Mankame, Richard J. Skurkis, Wayne Brown
  • Publication number: 20150096297
    Abstract: An exhaust heat recovery device provided with a Rankine cycle, capable of achieving improvements in start-up performance of the Rankine cycle and an efficient operation (actuation) of the Rankine cycle. An exhaust heat recovery device 1 that recovers and uses exhaust heat of an engine 10 includes: a Rankine cycle 2 including a heater 22, an expander 23, a condenser 24, and a pump 25; a bypass flow passage 26 that allows refrigerant to circulate while bypassing the expander 23; a bypass valve 27 that opens and closes the bypass flow passage 26; and a control unit 4. When starting up the Rankine cycle 2, the control unit 4 executes control to actuate the pump 25 with the bypass valve 27 open, and then to close the bypass valve 27 when a parameter indicating the condensation capacity of the condenser 24 becomes a predetermined value or more.
    Type: Application
    Filed: May 2, 2013
    Publication date: April 9, 2015
    Inventors: Tomonori Haraguchi, Hirofumi Wada
  • Publication number: 20150089943
    Abstract: Systems and methods for operating an engine that includes an exhaust gas heat recovery system are described. The system may selectively or contemporaneously supply energy from engine exhaust gas to generate electricity or warm the engine. In one example, exhaust gas energy raises a temperature of a heat transfer medium and the heat transfer medium is routed to an engine coolant heat exchanger or an expander via a bypass valve.
    Type: Application
    Filed: October 2, 2013
    Publication date: April 2, 2015
    Applicant: Ford Global Technologies, LLC
    Inventors: Quazi Ehtesham Hussain, David Richens Brigham, Mark John Jennings
  • Patent number: 8991180
    Abstract: The invention relates to a device and a method for the recovery of waste heat from an internal combustion engine (2), according to which a feed pump (6), a heat exchanger (8), an expansion engine (10) and a capacitor (12) are arranged in a circuit (4) containing a circulating working medium. A bypass connection (14) is mounted in parallel to the expansion engine (10), in the circuit (4), the expansion engine (10) being coupled to the circuit (4), or decoupled therefrom, according to an operating situation of the internal combustion engine (2).
    Type: Grant
    Filed: September 7, 2011
    Date of Patent: March 31, 2015
    Assignee: Robert Bosch GmbH
    Inventors: Gregory Rewers, Nadja Eisenmenger, Achim Brenk, Dieter Seher, Hans-Christoph Magel, Andreas Wengert
  • Patent number: 8991179
    Abstract: The invention relates to a drive unit, in particular for a vehicle drive, comprising a drive machine generating driving power, a cooling system for the fluid cooling of the drive machine and/or a component of the drive unit which is supplied at least indirectly with driving power by the drive machine, wherein in the cooling system a coolant circulates; a lubricating circuit for the lubrication of at least one movable component of the drive unit with a lubricant. The invention is characterized in that the drive unit further comprises an accumulation reservoir, in which a comprehensive operating fluid, which comprises a mixture of an ionic fluid and a vaporizable fluid, is stockpiled, wherein the cooling system and the lubricating circuit are at least indirectly fluidically connected to the accumulation reservoir in order to extract lubricant and coolant from the comprehensive operating fluid.
    Type: Grant
    Filed: July 28, 2010
    Date of Patent: March 31, 2015
    Assignee: Steamdrive GmbH
    Inventors: Jürgen Berger, Stephan Bartosch
  • Publication number: 20150075163
    Abstract: A waste heat utilization device for a motor vehicle includes a waste heat utilization circuit in which a working medium circulates. The water heat utilization circuit includes a conveying device, an evaporator, an expansion machine, and a condenser. The waste heat utilization device also includes an electrical generator in direct or indirect drive connection with a power take-off shaft of an internal combustion engine. The expansion machine is in direct drive connection with the power take-off shaft of the internal combustion engine for purposes of energy recirculation.
    Type: Application
    Filed: March 6, 2013
    Publication date: March 19, 2015
    Inventors: Volodymyr Frank, Manuel Jung, Christoph Junker, Eugen Krebs, Alexander Kropp, Thomas Streule
  • Patent number: 8966898
    Abstract: Disclosed is an energy retriever system and methods for absorbing energy and using that energy elsewhere or converting it to other useful forms of energy or work. The energy retriever system consists of a series of components interconnected by a plurality of conduits containing a fluid. Working as a self-contained thermodynamic system, the energy retriever system allows the fluid to circulate through all of these elements. Heat added to the energy capture subsystem heats the fluid. The fluid becomes more pressurized and moves into the expansion cycle subsystem. The energy extraction subsystem transforms the thermal energy of the fluid into work, kinetic energy or thermal energy. The reservoir subsystem compresses the fluid and reintroduces it into the energy capture subsystem. One-way valves are used throughout the system to keep the flow of the fluid in one direction and separate sections of the system that contain different pressures.
    Type: Grant
    Filed: August 14, 2013
    Date of Patent: March 3, 2015
    Assignee: Harlequin Motor Works, Inc.
    Inventor: Paul W. Corley
  • Publication number: 20150052893
    Abstract: A heat exchanger may include a gas conduit flowable through by a predetermined gas and a heat conduit flowable through by a predetermined fluid compound working fluid. The heat conduit may be in thermal communication with the gas conduit. The heat exchanger may include a first section having a first section length, a second section having a second section length, and a third section having a third section length. The gas conduit may span, in a direction of flow of the gas, the first section, the second section, and the third section. The heat conduit may span, in a direction of flow of the working fluid, the third section, the first section, and the second section. The first section may include a gas inlet and the third section may include a working fluid inlet and a gas outlet. The section may include a working fluid outlet.
    Type: Application
    Filed: August 26, 2014
    Publication date: February 26, 2015
    Inventors: Peter Geskes, Klaus Irmler, Eberhard Pantow, Michael Schmidt
  • Patent number: 8959914
    Abstract: A waste heat utilization device (2) for an internal combustion engine has a Rankine cycle (8) that recovers waste heat from an internal combustion engine (4), a generator (30) that is rotationally driven by an expander (14) and converts a rotational drive force into electric power, a converter (32) that controls the rotational speed of the expander (14) through the generator (30), refrigerant-condition detecting means (22, 24, 26, 28) that detects the pressure and temperature of a refrigerant passing through the expander (14), and a controller (34) that calculates pressure ratio Rp of the refrigerant in the immediate upstream and downstream of the expander (14) and specific heat ratio K of the refrigerant passing through the expander (14) on the basis of the pressure and temperature of the refrigerant, which have been detected by the refrigerant-condition detecting means (22, 24, 26, 28), calculates a preset pressure ratio Rps of the pressure ratio Rp by multiplying predetermined volume ratio Rv of the expand
    Type: Grant
    Filed: October 15, 2008
    Date of Patent: February 24, 2015
    Assignee: Sanden Corporation
    Inventors: Junichiro Kasuya, Yasuaki Kanou
  • Publication number: 20150047351
    Abstract: A waste heat utilization apparatus is provided with a Rankine cycle and a power transmission mechanism that transmits power regenerated by an expander to an engine. The power transmission mechanism includes an expander clutch that interrupts or permits The transmission of the power from to expander to the engine. The expander includes a rotational speed sensor that detects a rotational speed of the expander. An increase in friction of the expander is detected on the basis of an increase in the rotational speed of the expander detected by the rotational speed sensor when the expander clutch is disconnected.
    Type: Application
    Filed: August 14, 2012
    Publication date: February 19, 2015
    Inventors: Takayuki Ishikawa, Shinichiro Mizoguchi, Hiroyuki Nagai, Riyako Iwahashi, Satoshi Ogihara, Tomonori Haraguchi
  • Publication number: 20150040541
    Abstract: A waste heat recovery (WHR) system operates in a reverse mode, permitting using the WHR system to transfer heat to the exhaust gas of an internal combustion engine. In another configuration, a WHR system may operate in two modes. The first mode removes heat from exhaust gas of an engine to perform useful work. The second mode transfers heat to the exhaust gas. The benefit of this flexible system is that a WHR system is adaptable to rapidly heat exhaust gas at startup and during other conditions where the temperature of the exhaust gas is less than a predetermined operating range. Because of the ability to rapidly warm engine exhaust gas, an exhaust gas receiving system, such as an EGR or an aftertreatment system, may function to reduce the emissions of the engine more quickly. Because this system is reversible, it retains the capability of a conventional WHR system.
    Type: Application
    Filed: October 28, 2014
    Publication date: February 12, 2015
    Applicant: Cummins Intellectual Property, Inc.
    Inventor: Marten H. DANE
  • Patent number: 8950184
    Abstract: A device for utilizing waste heat of an internal combustion engine. A heat exchanger of a circuit of a working medium is provided in its exhaust system. A pump is connected upstream from the heat exchanger, the circuit containing an expansion machine. A coupling heat exchanger is located in the circuit of the working medium, the working medium of the circuit and the cooling medium of the internal combustion engine flowing through the coupling heat exchanger.
    Type: Grant
    Filed: June 22, 2010
    Date of Patent: February 10, 2015
    Assignee: Robert Bosch GmbH
    Inventors: Juergen Stegmaier, Martin Cichon, Manfred Schmitt, Achim Schmidt
  • Publication number: 20150033737
    Abstract: The invention relates to a method and a device for utilizing waste heat of an internal combustion engine, particularly for utilizing the waste heat of a vehicle engine, comprising at least one heat exchanger to transfer the waste heat from an internal combustion engine to a working medium; at least one turbine connected to a generator for generating mechanical or electrical energy, wherein said turbine is driven by said working medium; at least one cooler for cooling the working medium; at least one compressor for compressing the working medium; and at least one working medium circuit with pipes for the working medium, which is characterized in that the working medium, preferably carbon dioxide, propane, methanol or ethanol or a mixture of these fluids, is at least partially in a supercritical state.
    Type: Application
    Filed: November 30, 2012
    Publication date: February 5, 2015
    Inventors: Mikhael MITRI, Alena VON LAVANTE
  • Patent number: 8938964
    Abstract: A Rankine circuit (40) includes, as a plurality of heat exchangers, an EGR cooler (36) of an EGR circuit and an exhaust gas heat exchanger (41) associated with an exhaust passage. The EGR cooler and the exhaust gas heat exchanger are arranged such that the EGR cooler is located upstream of the exhaust gas heat exchanger as viewed in the flowing direction of a working fluid in the Rankine circuit. The amount of heat transferred from EGR gas to the working fluid in the EGR cooler is controlled by a control unit (60) so that the temperature of the EGR gas detected by an EGR gas temperature detector (39) may fall within a predetermined temperature range (e.g., 150° C. to 200° C.).
    Type: Grant
    Filed: September 21, 2011
    Date of Patent: January 27, 2015
    Assignee: Sanden Corporation
    Inventors: Yasuaki Kanou, Junichiro Kasuya
  • Publication number: 20150013333
    Abstract: A heat recovery system for an internal combustion engine may include a heat transfer device flowed through by a fluidic heat carrier for transferring the heat from a combustion exhaust gas of the internal combustion engine to the heat carrier, a heat power machine flowed through by the heat carrier for converting the heat transferred to the heat carrier into mechanical work, a substantially cyclically closed duct system for connecting the heat transfer device with the heat power machine, at least one displacement pump for conveying the heat carrier through the duct system in a predetermined flow direction, and a pump drive for driving the displacement pump. A reduced wear may result when the heat recovery system is supplemented by an impermeable separating membrane for the fluid-tight separation of the heat carrier from the pump drive.
    Type: Application
    Filed: July 10, 2014
    Publication date: January 15, 2015
    Inventors: Jochen Eggler, Alfred Elsaesser, Christian Maisch, Sascha Senjic
  • Publication number: 20150013335
    Abstract: A heat exchange device having a first media channel for a first medium and a second media channel for a second medium is further refined in that, in at least one section of the heat exchange device, a third media channel for a transfer medium is arranged between the first media channel and the second media channel, so that the heat transfer from the first medium to the second medium takes place via the transfer medium.
    Type: Application
    Filed: July 9, 2014
    Publication date: January 15, 2015
    Inventors: Asmus CARSTENSEN, Artur SEMKE, Thomas SCHULENBURG, Andreas HERR, Jörg FRITZSCHE, Marcus DALLMANN, Christoph KÄPPNER, Jörg VOLKMANN, Thomas MAISCHIK
  • Patent number: 8931275
    Abstract: A waste heat recovery system that efficiently converts waste heat from an engine coolant and an engine exhaust in a vehicle. The system includes a coolant heat exchanger that receives heat from the engine coolant, an exhaust heat exchanger that receives heat from the engine exhaust and an economizer heat exchanger. A plurality of valves control the flow of the fluid in different modes as determined by a power ratio between the heat provided by the exhaust heat exchanger and the heat provided by the coolant heat exchanger, including an economizer heat exchanger after coolant heat exchanger mode at low power ratios, where the fluid from the pump flows to the economizer heat exchanger after the coolant heat exchanger and an economizer heat exchanger before coolant heat exchanger mode at high power ratios, where the fluid from the pump flows to the economizer heat exchanger before the coolant heat exchanger.
    Type: Grant
    Filed: January 24, 2012
    Date of Patent: January 13, 2015
    Assignee: GM Global Technology Operations LLC
    Inventors: Stephen B. Glover, John R. Bucknell, Norman K. Bucknor, Dongsuk Kum
  • Patent number: 8931545
    Abstract: A heat exchanger arrangement is provided for an internal-combustion engine having a heat engine, which converts hot steam of a working medium by way of an expansion device to kinetic energy. The working medium, that can be delivered by a pump, can be heated in a first heat exchanger by a coolant and in a second heat exchanger by an exhaust gas of the internal-combustion engine. In the delivery direction, the working medium first flows through the first heat exchanger and, subsequently, through the second heat exchanger. The exhaust gas can flow through the first heat exchanger.
    Type: Grant
    Filed: March 18, 2009
    Date of Patent: January 13, 2015
    Assignee: Bayerische Motoren Werke Aktiengesellschaft
    Inventors: Raymond Freymann, Wolfgang Strobl, Walter Huebner, Andreas Obieglo, Peter Doemeland, Norbert Kraus, Juergen Becker, Michael Hoetger, Christian Goebel, Goeran Gensicke
  • Publication number: 20150007569
    Abstract: A volumetric expander (20) configured to transfer a working fluid and generate useful work includes a housing. The housing includes an inlet port (24) configured to admit relatively high-pressure working fluid and an outlet port (26) configured to discharge to a relatively low-pressure working fluid. The expander also includes first and second twisted meshed rotors (30,32) rotatably disposed in the housing and configured to exp/and the relatively high-pressure working fluid into the relatively low-pressure working fluid. Each rotor has a plurality of lobes, and when one lobe of the first rotor is leading with respect to the inlet port, one lobe of the second rotor is trailing with respect to the inlet port. The expander additionally includes an output shaft (38) rotated by the relatively high-pressure working fluid as the fluid undergoes expansion. A system for generating work using the expander in a Rankine cycle is also disclosed.
    Type: Application
    Filed: February 28, 2013
    Publication date: January 8, 2015
    Inventor: William Nicholas Eybergen
  • Patent number: 8925318
    Abstract: A waste heat retrieval system of a vehicle may include a reservoir disposed in a lower side of a exhaust gas boiler and in which a predetermined space is formed, a retrieval line that connects the exhaust gas boiler with the reservoir, a retrieval supply control valve disposed to open or close the retrieval line, and a control portion that controls the retrieval supply control valve to open the retrieval line such that working fluid of the exhaust gas boiler is returned to the reservoir if a retrieval condition is satisfied. Accordingly, the working fluid of the exhaust gas boiler in a waste heat retrieval system may be retrieved to the reservoir and therefore the freezing problem of the working fluid can be substantially resolved.
    Type: Grant
    Filed: December 13, 2012
    Date of Patent: January 6, 2015
    Assignee: Hyundai Motor Company
    Inventor: Jungmin Seo
  • Patent number: 8919123
    Abstract: A waste heat recovery apparatus for use with an internal combustion engine includes a working fluid circuit having a first heating line and a second heating line parallel to the first heating line, a first heat exchanger in the first heating line operatively connected to transfer heat energy to the working fluid from a waste exhaust flow of an internal combustion engine, a second heat exchanger in the second heating line operatively connected to transfer heat energy to the working fluid from recirculating exhaust gas the internal combustion engine, and a recuperative heat exchanger operatively connected to transfer heat energy to the working fluid in the first heating line from the working fluid at a junction of an expander outlet and condenser inlet.
    Type: Grant
    Filed: July 14, 2011
    Date of Patent: December 30, 2014
    Assignee: Mack Trucks, Inc.
    Inventors: John Gibble, Arne Andersson
  • Publication number: 20140373534
    Abstract: An energy recovery system for a machine with a cylinder activation and deactivation system is disclosed. The energy recovery system can include a first cylinder group circuit including a first pump, a first condenser, a first turbine, and a first flow path. The first flow path can be connected in fluid communication with the first pump, the first condenser, and the first turbine. The energy recovery system can additionally include a second cylinder group circuit including a second pump, a second condenser, a second turbine, and a second flow path. The second flow path can be connected in fluid communication with the second pump, the second condenser, and the second turbine. The first flow path can be in thermal communication with a first group of cylinders of the machine, and the second flow path can be in thermal communication with a second group of cylinders of the machine.
    Type: Application
    Filed: June 21, 2013
    Publication date: December 25, 2014
    Inventor: Jeffrey E. Jensen
  • Publication number: 20140352301
    Abstract: A waste heat recovery system for a motor vehicle is disclosed. Waste heat generated by an internal combustion engine of a motor vehicle is recovered by a waste heat recovery system. The waste heat recovery system includes a feed heat exchanger thermally coupled to the internal combustion engine for warming up a working fluid, and a driven machine which is driven by the heated working fluid. A clutch arrangement optional couples the driven machine to a drive train or the auxiliary unit of the motor vehicle.
    Type: Application
    Filed: May 28, 2014
    Publication date: December 4, 2014
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventor: Torsten Mueller
  • Publication number: 20140352302
    Abstract: An apparatus for generating superheated vapor using waste heat recovery. A housing has an inlet tank and an outlet tank at both ends. Exhaust gas is introduced through the inlet tank, and is discharged through the outlet tank. A plurality of wave fin structures are disposed inside the housing so as to be spaced apart from each other at predetermined distances in a top-bottom direction, and include a plurality of peaks and a plurality of valleys which are connected in a transverse direction so as to form wave-like structures in a direction in which the exhaust gas flows. A plurality of working fluid tubes alternate with the plurality of wave fin structures. An inlet pipe through which working fluid is introduced and an outlet pipe through which the working fluid is discharged are disposed on a side surface of the housing.
    Type: Application
    Filed: February 17, 2012
    Publication date: December 4, 2014
    Applicant: KORENS CO., LTD.
    Inventors: Yong Kuk Cho, Tae Jin Kim
  • Publication number: 20140345275
    Abstract: A Rankine cycle waste heat recovery system uses a receiver with a maximum liquid working fluid level lower than the minimum liquid working fluid level of a sub-cooler of the waste heat recovery system. The receiver may have a position that is physically lower than the sub-cooler's position. A valve controls transfer of fluid between several of the components in the waste heat recovery system, especially from the receiver to the sub-cooler. The system may also have an associated control module.
    Type: Application
    Filed: August 6, 2014
    Publication date: November 27, 2014
    Applicant: CUMMINS INTELLECTUAL PROPERTY, INC.
    Inventors: Timothy C. ERNST, Christopher R. NELSON
  • Patent number: 8893495
    Abstract: A waste heat recovery (WHR) system operates in a reverse mode, permitting using the WHR system to transfer heat to the exhaust gas of an internal combustion engine. In another configuration, a WHR system may operate in two modes. The first mode removes heat from exhaust gas of an engine to perform useful work. The second mode transfers heat to the exhaust gas. The benefit of this flexible system is that a WHR system is adaptable to rapidly heat exhaust gas at startup and during other conditions where the temperature of the exhaust gas is less than a predetermined operating range. Because of the ability to rapidly warm engine exhaust gas, an exhaust gas receiving system, such as an EGR or an aftertreatment system, may function to reduce the emissions of the engine more quickly. Because this system is reversible, it retains the capability of a conventional WHR system.
    Type: Grant
    Filed: July 16, 2012
    Date of Patent: November 25, 2014
    Assignee: Cummins Intellectual Property, Inc.
    Inventor: Marten H. Dane