Combined Liquid And Gaseous Fuel Patents (Class 123/525)
  • Patent number: 10113493
    Abstract: A system, method and apparatus for controlling a gas substitution characteristic in a dual fuel engine are provided. The gas substitution characteristic can be controlled based on measured characteristics directly or indirectly associated with operation of the dual fuel engine, including intake manifold air pressure (IMAP), load of the dual fuel engine, ambient air temperature, exhaust temperature, fan speed, and/or pressure of natural gas supplied to the dual fuel engine. Further, the gas substitution characteristic can be controlled by controlling intake manifold air temperature (IMAT) based on control of a cooling capacity of a cooling circuit.
    Type: Grant
    Filed: November 22, 2016
    Date of Patent: October 30, 2018
    Assignee: Caterpillar Inc.
    Inventors: Nathan P. Atterberry, Matthew J. Engfehr
  • Patent number: 9988990
    Abstract: A movable electrical generation system includes a generator operable to produce a supply of electrical energy, a prime mover operable to drive the generator, and a first fuel supply selectively deliverable to the movable electrical generation system in a first pressure range. A second fuel, different from the first fuel is selectively deliverable to the prime mover in a second pressure range. A controller is operable to automatically deliver the second fuel to the prime mover in response to the first fuel having a pressure outside of the first pressure range.
    Type: Grant
    Filed: April 6, 2015
    Date of Patent: June 5, 2018
    Assignee: Clark Equipment Company
    Inventors: Chinmay Bhatt, Nicholas Harknett, Dale Herbstritt
  • Patent number: 9970367
    Abstract: Methods and systems are provided for an ultrasonic wave generator within a vehicle emissions control system. In one example, a frequency of ultrasonic waves may be applied to a fuel vapor canister, the frequency adjusted in response to an estimate of hydrocarbon distribution within a vapor canister received from temperature and hydrocarbon sensor outputs.
    Type: Grant
    Filed: June 22, 2016
    Date of Patent: May 15, 2018
    Assignee: Ford Global Technologies, LLC
    Inventors: Aed M. Dudar, Robert Roy Jentz, Douglas Raymond Martin
  • Patent number: 9970363
    Abstract: The invented system adds some petrol fuel to the vehicle engine which runs with natural gas (CNG or LPG). It causes a simultaneous combustion of petrol and natural gas (CNG or LPG). This action decreases depreciation of engine, increases power of the engine and reduces fuel consumption in natural gas vehicles. The above-mentioned system consists of an innovative petrol holder storage, an electronically circuit, a relay, a lever micro switch and a petrol fuel injector. Whenever the accelerator pedal is pressed more than a certain amount, the system will be activated and command to inject petrol collected in the storage into the air manifold.
    Type: Grant
    Filed: August 5, 2014
    Date of Patent: May 15, 2018
    Inventor: Jahangir Ahmadi Ardebili poor
  • Patent number: 9933114
    Abstract: According to the described embodiments, an intelligent compressed natural gas distributing system is inserted into an existing compressed natural gas fueling station. A means to distribute compress natural gas associated with designated primary dispenser as determined by fueling situations. The system maintains a high differential of pressure during fueling as to decrease time of fueling by means of control valves on the dispenser lines. Within the system, at least one of the dispenser line is determined to be the primary active dispenser and is fueled directly from a compressor when pressure is detected under optimal threshold. The subordinate lines are subject to a bypass in which fueling is directly sourced from a high-pressure storage and receiving excess gas from the primary active dispenser.
    Type: Grant
    Filed: September 26, 2014
    Date of Patent: April 3, 2018
    Assignees: Independence Fuel Systems L.L.C.
    Inventor: Bradley H. Thiessen
  • Patent number: 9850873
    Abstract: An engine pre-heating system includes a housing that houses a climate control heating element and a controller configured in the housing. The controller generates an energizing signal for controlling an amount of electrical power provided to multiple engine heating elements that are thermally coupled to the engines of multiple vehicles. The controller also generates a climate control signal for controlling the climate controlled heating element to maintain the controller inside the housing within a specified temperature range. The energizing signal provided to the engine heating elements is inversely proportional to an ambient temperature proximate the engines.
    Type: Grant
    Filed: October 13, 2014
    Date of Patent: December 26, 2017
    Assignee: Allied Green Technologies, Inc.
    Inventor: Jesse H. Henley
  • Patent number: 9816455
    Abstract: An engine is equipped with a first injection valve that injects fuel into an intake passage, and a second injection valve that injects fuel into a cylinder. The engine is provided with a fuel supply system having a first supply path for the first injection valve and a second supply path for the second injection valve. Moreover, an electronic control unit of the engine executes a unilateral injection process for causing fuel to be injected from one of the first injection valve and the second injection valve and prohibiting fuel injection from the other injection valve, when it is determined that there is a deviation between a property of fuel in the first supply path and a property of fuel in the second supply path.
    Type: Grant
    Filed: May 25, 2016
    Date of Patent: November 14, 2017
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Kenichi Ishimatsu, Hirofumi Osada
  • Patent number: 9752728
    Abstract: A cryogenic tank assembly includes a cryogenic tank having an internal volume that is configured to contain liquefied natural gas (LNG). The cryogenic tank includes an inlet and an outlet that are each fluidly connected to the internal volume. The assembly includes a recirculation conduit coupled in fluid communication between the inlet and the outlet. The recirculation conduit extends along a path between the inlet and outlet external to the internal volume of the cryogenic tank such that the path is configured to be exposed to an ambient environment of the cryogenic tank. The recirculation conduit is configured to: receive a flow of LNG from the internal volume through the outlet; transfer heat from the ambient environment to the LNG flow to change the LNG flow to a flow of natural gas; and inject the natural gas flow into the internal volume of the cryogenic tank through the inlet.
    Type: Grant
    Filed: December 20, 2012
    Date of Patent: September 5, 2017
    Assignee: General Electric Company
    Inventors: Ching-Jen Tang, Laura Michele Hudy
  • Patent number: 9738368
    Abstract: Disclosed herein is arrangement of a fuel gas tank in a fuel gas supply system that supplies liquefied natural gas to an engine. In accordance with one aspect of the invention, a fuel gas supply system of a ship includes an engine generating driving force using fuel gas; and a fuel gas tank storing the fuel gas to be supplied to the engine, wherein the engine is disposed in an engine room placed at the stern of the ship and the fuel gas tank is disposed above the engine room.
    Type: Grant
    Filed: November 6, 2014
    Date of Patent: August 22, 2017
    Assignee: DAEWOO SHIPBUILDING & MARINE ENGINEERING CO., LTD.
    Inventors: Joon Chae Lee, Dong Eok Kang, Cheong Gi Park
  • Patent number: 9675522
    Abstract: The invention relates to a rotary die device for producing soft capsules, comprising a capsule forming unit for forming a soft-capsule shell and a novel dosing unit for feeding a filling material into the capsule forming unit, characterized in that the dosing unit comprises a dispensing system that includes (a) a container defining a reservoir for storing therapeutic or non-therapeutic compositions; (b) a low pressure pump; (c) a high pressure peristaltic pump; (d) a supply line for the therapeutic or non-therapeutic compositions; and (d) one or more electromagnetically activated nozzles/injectors to fill the softgel capsules with the therapeutic or non-therapeutic compositions.
    Type: Grant
    Filed: May 28, 2013
    Date of Patent: June 13, 2017
    Assignee: PROCAPS SA
    Inventors: Carlos Salazar Altamar, Leopoldo Pardo, Ivan Romero, Gustavo Anaya
  • Patent number: 9624851
    Abstract: A method of operating a vehicle powertrain includes determining a selected powertrain operational mode. A demand fraction is determined. An internal combustion engine (ICE) is to output a maximum power when a gaseous fuel is conveyed to an injector of the ICE at a source pressure greater than a cutoff pressure. The source pressure in a container in fluid connection with the injector is determined. The gaseous fuel is received at the source pressure by the injector to inject the gaseous fuel into the ICE for combustion in response to the source pressure, demand fraction, or selected powertrain operation mode meeting a first set of criteria. The injector is prevented from injecting the gaseous fuel into the ICE and the powertrain is driven from an alternative power source in response to the source pressure, demand fraction, or selected powertrain operation mode meeting a second set of criteria.
    Type: Grant
    Filed: February 4, 2015
    Date of Patent: April 18, 2017
    Assignee: GM Global Technology Operations LLC
    Inventors: Anne M. Dailly, Jose Franca, Mei Cai, Arianna T. Morales, Mahmoud H. Abd Elhamid, Robert Lee Girdwood
  • Patent number: 9599045
    Abstract: A method for controlling fuel pressure in an internal combustion engine consuming a gaseous fuel and a liquid fuel comprises steps of determining a gaseous fuel pressure target value as a function of an engine operating condition, pressurizing the liquid fuel to a liquid fuel pressure based on the gaseous fuel pressure target value, and regulating gaseous fuel pressure from the liquid fuel pressure. The gaseous fuel pressure equals the gaseous fuel pressure target value to within a predetermined range of tolerance. A corresponding apparatus controls fuel pressure in a gaseous fuelled internal combustion engine.
    Type: Grant
    Filed: October 1, 2014
    Date of Patent: March 21, 2017
    Assignee: WESTPORT POWER INC.
    Inventors: Alain M. J. Touchette, Jamie Y. Wardlaw
  • Patent number: 9546604
    Abstract: The present disclosure provides methods, systems, and computer-readable media for the detection of valve faults based on transient air pressure measurements. For example, a method for fault detection may comprise actuating a shut off valve to an open position, determining a first air pressure of air in an enclosed space at a first time, determining a second air pressure of the air in the enclosed space at a second time and in response to actuation of the shut off valve to an open position, subtracting the first air pressure and the second air pressure to obtain an actual pressure difference, comparing the actual pressure difference to a predetermined pressure difference, and determining, based on the transient comparison, whether at least one of the shut off valve and a check valve is in a failed state.
    Type: Grant
    Filed: January 8, 2015
    Date of Patent: January 17, 2017
    Assignee: UNITED TECHNOLOGIES CORPORATION
    Inventors: Jesse W. Clauson, Eric E. Legg
  • Patent number: 9482388
    Abstract: A skid-mounted compressed gas dispensing station comprises a skid-mounted assembly, with the skid adapted to be mounted to the ground; wherein the skid-mounted assembly comprises one or more selected from the group consisting of a dryer assembly, one or more compressors, a compressed gas storage tank, one or more dispenser assemblies, and an electrical control system, either integral to or pre-mounted on the skid.
    Type: Grant
    Filed: November 8, 2013
    Date of Patent: November 1, 2016
    Assignee: Clean Energy
    Inventors: Colm Murphy, Brad Miller
  • Patent number: 9457789
    Abstract: A fuel control module, based on an engine torque request, fuels N cylinders of an engine using a first fuel system. N is an integer greater than zero. A throttle control module, based on the engine torque request and the fueling of the N cylinders using the first fuel system, opens a throttle valve to a predetermined wide open throttle (WOT) position. A cost module, when the engine torque request is greater than a predetermined torque: determines a first cost value for fueling at least one of the N cylinders of the engine using a second fuel system; and determines a second cost value for adjusting at least one operating parameter other than fueling of the engine. An adjustment module, based on, the first and second cost values, one of: initiates the fueling of the at least one of the N cylinders using the second fuel system; and adjusts of the at least one operating parameter other than fueling of the engine.
    Type: Grant
    Filed: May 13, 2014
    Date of Patent: October 4, 2016
    Assignee: GM Global Technology Operations LLC
    Inventors: Tameem K. Assaf, Louis A. Avallone
  • Patent number: 9441570
    Abstract: Additional approaches for the reduction of particulate emissions in gasoline engines using optimized port+direct injection are described. These embodiments include control of the amount of directly injected fuel so as to avoid a threshold increase in particulates due to piston wetting and reduction of cold start emissions by use of air preheating using variable valve timing.
    Type: Grant
    Filed: August 31, 2015
    Date of Patent: September 13, 2016
    Assignee: Ethanol Boosting Systems, LLC
    Inventors: Daniel R. Cohn, Leslie Bromberg
  • Patent number: 9435273
    Abstract: A fuel selector for use with a dual fuel generator includes a selector plate, a first fuel valve assembly positioned adjacent the selector plate and actuatable between an ON position and an OFF position to selectively control a first fuel flow to an engine of the dual fuel generator, and a second fuel valve assembly positioned adjacent the selector plate and actuatable between an ON position and an OFF position to selectively control a second fuel flow to the engine of the dual fuel generator. A selector switch coupled to the selector plate is linearly translatable from a first position to a second position, so as to enable positioning of only one of the first fuel valve assembly and the second fuel valve assembly in the ON position at a given time, such that the first and second fuel valve assemblies cannot be in the ON position concurrently.
    Type: Grant
    Filed: November 1, 2013
    Date of Patent: September 6, 2016
    Assignee: Champion Engine Technology, LLC
    Inventors: Mark J. Sarder, Leigh Jenison, Ian Schmit
  • Patent number: 9410499
    Abstract: The present invention is intended to suppress generation of a misfire and an increase in the amount of emission of HC, in a multi-fuel internal combustion engine of compression ignition type using, as fuels, a liquid fuel which can be ignited by compression and a gas fuel which is lower in ignitability than the liquid fuel. In the invention, in the same operating state, in cases where the liquid fuel and the gas fuel are caused to combust with the liquid fuel being used as an ignition source, the equivalent ratio of a mixture in a cylinder is made to increase, in comparison with the case where only the liquid fuel is caused to combust, and the rate of the increase of the equivalent ratio with respect to the case where only the liquid fuel is caused to combust is made smaller, when an engine load is low in comparison with the time when the engine load is high, and when an engine rotational speed is low in comparison with the time when the engine rotational speed is high.
    Type: Grant
    Filed: August 24, 2011
    Date of Patent: August 9, 2016
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Masahiko Masubuchi
  • Patent number: 9360161
    Abstract: A compressed natural gas storage and dispensing system having bulk storage tanks in fluid communication with a natural gas supply source; a primary compressor delivering the natural gas to the bulk storage tanks; dispensing storage tanks in fluid communication with the bulk storage tanks and in fluid communication with fuel dispensers; a secondary compressor delivering the natural gas to the dispensing storage tanks from the bulk storage tanks; wherein when the pressure within the dispensing storage tanks falls below a predetermined minimum pressure, natural gas is delivered from the bulk storage tanks to the dispensing storage tanks, and wherein when the pressure in the bulk storage tanks falls below a predetermined minimum pressure, natural gas is delivered from the supply source to the bulk storage tanks.
    Type: Grant
    Filed: January 22, 2014
    Date of Patent: June 7, 2016
    Inventor: R. Keith Barker
  • Patent number: 9328673
    Abstract: It is an object of the present invention to provide an engine which can easily be produced. In an engine including an electronic throttle device, a control unit for controlling the electronic throttle device, and a gas fuel supply unit, a gaseous-fuel mixer is used as the gas fuel supply unit, and when an extending direction of a crankshaft is defined as a longitudinal direction and an engine cooling fan is defined as existing on a front side and a side opposite from the front side is defined as a rear side, a collector of an intake manifold extends in the longitudinal direction, the electronic throttle device is mounted on the rear side of the collector, and the gaseous-fuel mixer is mounted on the rear side of the electronic throttle device.
    Type: Grant
    Filed: September 5, 2014
    Date of Patent: May 3, 2016
    Assignee: KUBOTA Corporation
    Inventors: Hiroshi Inoue, Yutaka Teruumi, Kazuo Kojima
  • Patent number: 9316178
    Abstract: This application concerns systems and methods for compressing natural gas with an internal combustion engine. In a representative embodiment, a system for compressing a gas comprises a reciprocating internal combustion engine including at least one piston-cylinder assembly comprising a piston configured to travel in a cylinder and to compress gas in the cylinder in multiple compression stages. The system can further comprise a first pressure tank in fluid communication with the piston-cylinder assembly to receive compressed gas from the piston-cylinder assembly until the first pressure tank reaches a predetermined pressure, and a second pressure tank in fluid communication with the piston-cylinder assembly and the first pressure tank. The second pressure tank can be configured to receive compressed gas from the piston-cylinder assembly until the second pressure tank reaches a predetermined pressure.
    Type: Grant
    Filed: April 3, 2014
    Date of Patent: April 19, 2016
    Assignee: State of Oregon Acting By and Through the State Board of Higher Education on Behalf of Oregon State University
    Inventors: Christopher L. Hagen, Guy Babbitt, Christopher Turner, Nick Echter, Kristina Weyer-Geigel
  • Patent number: 9273638
    Abstract: A system for a gaseous-fueled engine, comprising: a gaseous fuel tank, a first pressure regulator comprising: a high pressure chamber coupled to the gaseous fuel tank, a low pressure chamber coupled to an engine fuel rail, and a reference chamber; a second pressure regulator coupled to the reference chamber; a first valve controlling fuel flow from the gaseous fuel tank to the engine fuel rail; a second valve controlling fuel flow from the second pressure regulator to the reference chamber; and a controller including memory with instructions therein for adjusting the valves based on a desired fuel rail pressure. In this way, the system enables at least two different fuel rail pressures such that peak fuel demand can be satisfied without maintaining peak fuel rail pressure at all times.
    Type: Grant
    Filed: April 15, 2013
    Date of Patent: March 1, 2016
    Assignee: Ford Global Technologies, LLC
    Inventor: Ross Dykstra Pursifull
  • Patent number: 9127600
    Abstract: An engine system is disclosed that combusts both gaseous and diesel fuels. The system includes a diesel reservoir in communication with an internal combustion engine via a diesel rail. The system also includes a liquefied gaseous fuel reservoir in communication with the internal combustion engine via a gaseous fuel rail. The gaseous fuel and diesel rails both are in communication with a pressure control device. The pressure control device measures the pressure differential between the gaseous fuel and diesel rails. If the pressure differential exceeds a desired range, the pressure control device vents gaseous fuel from the gaseous fuel rail to a spark ignited engine, where the vent gas is used as fuel. The spark ignited engine then converts the vented gaseous fuel to useful work.
    Type: Grant
    Filed: June 19, 2012
    Date of Patent: September 8, 2015
    Assignee: Caterpillar Inc.
    Inventors: Dana R. Coldren, Joshua Wayne Steffen
  • Patent number: 9127599
    Abstract: The present invention is intended to suppress an excessive increase in the amount of emission of HC in a multi-fuel internal combustion engine of compression ignition type which is able to perform mixed combustion of a liquid fuel, which can be ignited by compression, and a gas fuel which has methane as a primary component. In the present invention, a required mixing ratio of the liquid fuel and the gas fuel as well as a required amount of HC emission is calculated based on an operating state of the multi-fuel internal combustion engine (S103, S104). Then, based on the required mixing ratio and the required amount of HC emission, a required compression ratio is calculated which is a compression ratio at which an amount of HC emission from the multi-fuel internal combustion engine becomes the required amount of HC emission (S105), and the compression ratio of the multi-fuel internal combustion engine is controlled to the required compression ratio (S107).
    Type: Grant
    Filed: April 8, 2011
    Date of Patent: September 8, 2015
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Masahiko Masubuchi, Takashi Hotta
  • Patent number: 9080518
    Abstract: A method and system for operating an engine that is supplied a fuel having a low super critical temperature is presented. In one example, the method supplies excess fuel to a direct injection fuel rail to cool a portion of the fuel system that is near direct fuel injectors. The heat is drawn from the direct injection fuel rail to a fuel tank where the heat is removed via injecting fuel vapors to the engine.
    Type: Grant
    Filed: August 19, 2013
    Date of Patent: July 14, 2015
    Assignee: Ford Global Technologies, LLC
    Inventor: Ross Dykstra Pursifull
  • Patent number: 9046049
    Abstract: A method of controlling fuel injection of a bi-fuel vehicle running on gasoline and liquefied petroleum gas (LPG), and more particularly, a method of controlling fuel injection of a bi-fuel vehicle having an engine running on gasoline and LPG, capable of simultaneously controlling supply systems and injectors of fuels and switching the fuels in response to a fuel switch request based on an injection ratio and an injection time of each fuel is provided. Thus, fuels may be switched stably and efficiently, output reduction and exhaust gas increase due to deviation of an air-fuel ratio while switching fuels may be prevented, and fuels may be appropriately switched. Furthermore, mechanical stress generated while switching fuels may be minimized and stable driving may be provided. Accordingly, the reliability of a bi-fuel vehicle simultaneously using gasoline and LPG may be improved and the competitiveness of bi-fuel vehicle products may also be improved.
    Type: Grant
    Filed: July 29, 2010
    Date of Patent: June 2, 2015
    Assignee: KEFICO CORPORATION
    Inventors: Byung Chun Jeon, Hu Rak Choi, Ji Won Kang
  • Patent number: 9032936
    Abstract: A control device for an internal combustion engine includes an engine and a control unit. The engine can be driven by switching between CNG fuel and liquid fuel. The control unit switches an air fuel ratio, in case of switching fuel to be supplied to the engine between the CNG fuel and the liquid fuel, so that torque fluctuation of the engine is unchanged before and after switching the fuel.
    Type: Grant
    Filed: March 19, 2010
    Date of Patent: May 19, 2015
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Yusuke Nakayama
  • Patent number: 9027538
    Abstract: A gaseous fuel control system for a dual-fuel internal combustion engine comprising a plurality of valves for controlling the amount of gaseous fuel supplied to the engine. The valves have adjustable full-open flow rates and rapidly move from full-open to full-closed in response to a digital signal. An electronic system for monitoring at least one engine operating parameter maps the parameter value to control the opening and closing of the valves to establish a desired gaseous fuel flow rate.
    Type: Grant
    Filed: August 31, 2011
    Date of Patent: May 12, 2015
    Assignee: Hoerbiger Kompressortechnik Holding GmbH
    Inventor: Joseph M. Lepley
  • Patent number: 9027534
    Abstract: A compression ignition dual fuel engine supplies natural gas fuel and liquid diesel fuel to each engine cylinder from a common fuel injector. Each fuel injector is fluidly connected to both a liquid fuel common rail and a gaseous fuel common rail. The engine includes a surplus gas system for capturing surplus gas, such as evaporated gas from the gaseous fuel supply and pressure control system, or left over pressurized natural gas produced by engine shut down. Rather than being vented to atmosphere, the surplus gas can be burned in the engine when operating conditions present burn opportunities.
    Type: Grant
    Filed: October 26, 2012
    Date of Patent: May 12, 2015
    Assignee: Caterpillar Inc.
    Inventors: Hoisan Kim, Alan Stockner, Mark F. Sommars
  • Patent number: 9031763
    Abstract: A system and attendant structural assembly operative to establish a coordinated mixture of gaseous and distillate fuels for an engine including an electronic control unit (ECU) operative to monitor predetermined engine data determinative of engine fuel requirements and structured to regulate ratios of the gaseous and distillate fuel of an operative fuel mixture for the engine. The system and assembly includes at least one mixing assembly comprising an integrated throttle body and air gas mixer directly connected to one another, wherein the throttle body is disposed in fluid communication with a pressurized gaseous fuel supply and the air gas mixer is disposed in fluid communication with a flow of intake air to a combustion section of the engine. In use, the throttle body is structured to direct a variable gaseous fuel flow directly to the air gas mixer for dispensing into the intake air flow to the combustion section.
    Type: Grant
    Filed: February 7, 2014
    Date of Patent: May 12, 2015
    Assignee: Gaseous Fuel Systems, Corp.
    Inventor: Jason Green
  • Publication number: 20150122230
    Abstract: A fuel selector for use with a dual fuel generator includes a selector plate, a first fuel valve assembly positioned adjacent the selector plate and actuatable between an ON position and an OFF position to selectively control a first fuel flow to an engine of the dual fuel generator, and a second fuel valve assembly positioned adjacent the selector plate and actuatable between an ON position and an OFF position to selectively control a second fuel flow to the engine of the dual fuel generator. A selector switch coupled to the selector plate is linearly translatable from a first position to a second position, so as to enable positioning of only one of the first fuel valve assembly and the second fuel valve assembly in the ON position at a given time, such that the first and second fuel valve assemblies cannot be in the ON position concurrently.
    Type: Application
    Filed: November 1, 2013
    Publication date: May 7, 2015
    Applicant: Champion Engine Technology, LLC
    Inventors: Mark J. Sarder, Leigh Jenison, Ian Schmit
  • Publication number: 20150122216
    Abstract: Presented a method and a system for improving atomization of heavy fuel oil or diesel fuel in heavy duty diesel engines, e.g. marine engines, wherein before injection into a combustion chamber the fuel is treated by gas/gases under elevated pressure of about 500 psi in an absorber; the heavy fuel oil/diesel fuel is fed to the absorber's dispensing means at a pressure of 1100 psi; a resulted fuel solution without a free gas phase is further mixed with a recirculating fuel stream forming a mixed fuel stream; the mixed fuel stream is directed for injection into a combustion chamber.
    Type: Application
    Filed: May 11, 2013
    Publication date: May 7, 2015
    Inventors: Victor Gurin, Mindaugas Macijauskas, Pavel Pikul, Serguei Permiakov, Mark Goltsman, Igor Gachik
  • Patent number: 9022006
    Abstract: Many IC engine inefficiencies are linked to the relatively low mixture formation rates of current injection methods. Process intensification (PI) is excellent at high mixture formation rates, high mass transfer rates, and short residence times, therefore a wall integrated injection method and device featuring PI has been provided. It allows increased number of injection sites and interfacial surface area between fluid jets and the volume of the squash area, hence high mixture formation rates shorter Liquid Lengths and the use of micro nozzles to further intensify the mixing process by locally mixing fuel and oxidant. This allows high EGR and low compression ratios and better control of HCCI start of ignition. PI effectively achieves thermo and species stratification for extending the load range of the HCCI engine while permitting effective water addition for reciprocating and turbine for lower exhaust heat and less fuel burned hence less CO2 emissions.
    Type: Grant
    Filed: November 4, 2012
    Date of Patent: May 5, 2015
    Inventor: Enock N Segawa
  • Patent number: 9026339
    Abstract: A compression ignition engine includes a high pressure injector for injecting a liquid fuel into a first combustion cylinder and a low pressure injector for injecting a gaseous fuel into a second combustion cylinder. A controller is coupled to the high pressure injector and the low pressure injector. The controller selects one of a liquid fuel mode and a gaseous fuel mode. If the liquid fuel mode is selected, air is compressed in a first cylinder, the compressed air is transferred to a second cylinder, and the liquid fuel is injected into the second cylinder. If the gaseous fuel mode is selected, air is compressed in the second cylinder, the compressed air is transferred to the first cylinder, and the gaseous fuel is injected into the first cylinder.
    Type: Grant
    Filed: March 30, 2012
    Date of Patent: May 5, 2015
    Assignee: Sturman Digital Systems, LLC
    Inventor: Oded Eddie Sturman
  • Patent number: 9016264
    Abstract: A cryogenic fuel system having a priming circuit for a machine is disclosed. The fuel system may have a tank, configured to hold a cryogenic fluid, and a pump. A first passage may connect the tank and the pump, and a second passage may be configured to hold a cooling fluid and be located to cool the first passage.
    Type: Grant
    Filed: October 31, 2012
    Date of Patent: April 28, 2015
    Assignee: Caterpillar Inc.
    Inventor: Alan Ray Stockner
  • Patent number: 8997720
    Abstract: The present disclosure is directed to a fuel circuit of a fuel injector that includes a first channel, a second channel, and a valve. The first channel is configured to receive a first fuel and define a flow path for the first fuel. The second channel is configured to receive a second fuel and define a flow path for the second fuel. The valve is in fluid communication with the first channel and the second channel. The valve is adapted to direct the second fuel to the first channel when a pressure in the first channel reaches a predetermined level.
    Type: Grant
    Filed: December 12, 2012
    Date of Patent: April 7, 2015
    Assignee: Caterpillar Inc.
    Inventors: Cory A. Brown, Xiangdong Ding, Hoisan Kim, Mayank Mittal, Mark F. Sommars
  • Patent number: 8997711
    Abstract: Fuel management system for efficient operation of a spark ignition gasoline engine. Injectors inject an anti-knock agent such as ethanol directly into a cylinder of the engine. A fuel management microprocessor system controls injection of the anti-knock agent so as to control knock and minimize that amount of the anti-knock agent that is used in a drive cycle. It is preferred that the anti-knock agent is ethanol. The use of ethanol can be further minimized by injection in a non-uniform manner within a cylinder. The ethanol injection suppresses knock so that higher compression ratio and/or engine downsizing from increased turbocharging or supercharging can be used to increase the efficiency or the engine.
    Type: Grant
    Filed: December 19, 2013
    Date of Patent: April 7, 2015
    Assignee: Massachusetts Institute of Technology
    Inventors: Daniel R. Cohn, Leslie Bromberg, John B. Heywood
  • Patent number: 8991363
    Abstract: A machine includes a machine body and a dual fuel compression ignition engine attached to the machine body. A dual fuel system is operably coupled to supply the engine with liquid diesel fuel and natural gas fuel directly into respective cylinders of the engine. The fuel system includes an insulated tank for storing the natural gas fuel, a pressure sensor positioned to measure fluid pressure within the tank, and a pump for drawing the natural gas fuel from the tank. An electronic controller is in communication with the pressure sensor and has a cryogenic system diagnostics algorithm executable thereon that is configured to receive a pressure signal from the pressure sensor, detect a cryogenic system fault based on the signal, and generate a notification signal based on the fault.
    Type: Grant
    Filed: August 21, 2012
    Date of Patent: March 31, 2015
    Assignee: Caterpillar Inc.
    Inventors: Joshua W. Steffen, Dana R. Coldren, Alan R. Stockner
  • Patent number: 8991362
    Abstract: Disclosed is a method of injecting LPG gas into a diesel fuel engine for combustion with diesel fuel therein. One aspect includes injecting LPG gas into an air-stream of an engine air intake or manifold, measuring the percentage of LPG gas injected into the airstream or other efficiency gauge, varying the rate of injection of LPG gas into the airstream in response to the measured percentage of LPG gas therein and injecting the LPG gas at a pre-determined rate so as to maintain an LPG gas concentration in the air intake stream in the range of 0.2% to 0.6% by volume of LPG gas.
    Type: Grant
    Filed: June 13, 2012
    Date of Patent: March 31, 2015
    Assignee: Gas Tek Solutions Pty. Ltd.
    Inventors: Derek Robert Watkins, Bruce Robert Watkins, Keith Murray Rumbel
  • Publication number: 20150075499
    Abstract: A method for controlling fuel pressure in an internal combustion engine consuming a gaseous fuel and a liquid fuel comprises steps of determining a gaseous fuel pressure target value as a function of an engine operating condition, pressurizing the liquid fuel to a liquid fuel pressure based on the gaseous fuel pressure target value, and regulating gaseous fuel pressure from the liquid fuel pressure. The gaseous fuel pressure equals the gaseous fuel pressure target value to within a predetermined range of tolerance. A corresponding apparatus controls fuel pressure in a gaseous fuelled internal combustion engine.
    Type: Application
    Filed: October 1, 2014
    Publication date: March 19, 2015
    Inventors: Alain M.J. Touchette, Jamie Y. Wardlaw
  • Patent number: 8978626
    Abstract: A vapor recovery system for an internal combustion engine is provided, the system having a fuel tank containing fuel and vapor that is in select fluid communication with an intake of the internal combustion engine, a compressor, a condensate tank, a condensate composition sensor, and an engine control unit. The engine control unit can be configured to select a desired operating mode for the internal combustion engine and to control the supply of condensate to the intake of the internal combustion engine based on the selected desired operating mode.
    Type: Grant
    Filed: January 28, 2010
    Date of Patent: March 17, 2015
    Assignee: Board of Trustees of the University of Alabama
    Inventors: Marcus Demetris Ashford, Daniel Timothy Daly, Scott Kevin Spear
  • Publication number: 20150068500
    Abstract: It is an object of the present invention to provide an engine which can easily be produced. In an engine including an electronic throttle device, a control unit for controlling the electronic throttle device, and a gas fuel supply unit, a gaseous-fuel mixer is used as the gas fuel supply unit, and when an extending direction of a crankshaft is defined as a longitudinal direction and an engine cooling fan is defined as existing on a front side and a side opposite from the front side is defined as a rear side, a collector of an intake manifold extends in the longitudinal direction, the electronic throttle device is mounted on the rear side of the collector, and the gaseous-fuel mixer is mounted on the rear side of the electronic throttle device.
    Type: Application
    Filed: September 5, 2014
    Publication date: March 12, 2015
    Inventors: Hiroshi INOUE, Yutaka TERUUMI, Kazuo KOJIMA
  • Patent number: 8977473
    Abstract: A method of operating a dual fuel compression ignition engine includes controlling a liquid fuel pressure within the liquid fuel common rail toward a desired liquid fuel pressure, and controlling a gaseous fuel pressure within the gaseous fuel common rail toward a desired gaseous fuel pressure that is less than the desired liquid fuel pressure. The method also includes commanding a change in the liquid fuel pressure to a decreased liquid fuel pressure that is less than both the desired liquid fuel pressure and a current gaseous fuel pressure. The liquid fuel pressure is maintained above the gaseous fuel pressure during a transition of the liquid fuel pressure toward the decreased liquid fuel pressure by executing the pressure control algorithm.
    Type: Grant
    Filed: August 29, 2012
    Date of Patent: March 10, 2015
    Assignee: Caterpillar Inc.
    Inventor: Cory Andrew Brown
  • Publication number: 20150059687
    Abstract: Methods and systems are provided for adjusting a phase of gaseous fuel delivered to fuel injectors of a fuel delivery system. In one example, a method may include adjusting a fuel pressure in a fuel delivery system to deliver fuel in each of a liquid and a gaseous phase during different engine operating conditions. The fuel pressure may be based on a temperature, composition, and desired phase of the fuel.
    Type: Application
    Filed: September 5, 2013
    Publication date: March 5, 2015
    Applicant: Ford Global Technologies, LLC
    Inventors: Chris Paul Glugla, Gopichandra Surnilla, Eric Warren Curtis, John Hedges, Mark Allen Dearth
  • Patent number: 8967123
    Abstract: Provided is a shut-off valve fault diagnosis device that performs fault diagnosis of a first shut-off valve that is disposed immediately after a gaseous fuel tank and a second shut-off valve that is disposed immediately before a regulator in a gaseous fuel supply system. The shut-off valve fault diagnosis device includes a diagnosis processing unit that performs a valve-shutting control of the first shut-off valve, performs a valve-shutting control of the second shut-off valve after a predetermined time has passed since the valve-shutting control of the first shut-off valve, and performs fault diagnosis of the first shut-off valve and the second shut-off valve based on a variation tendency in a fuel pressure between the first shut-off valve and the second shut-off valve after performing the valve-shutting control of the second shut-off valve.
    Type: Grant
    Filed: January 6, 2011
    Date of Patent: March 3, 2015
    Assignee: Keihin Corporation
    Inventors: Yoshio Saito, Takayuki Shimatsu
  • Patent number: 8967502
    Abstract: A dual fuel injector may be used to injector both gas and liquid fuel into a cylinder of a compression ignition engine. An injector body defines a first set of nozzle outlets, a second set of nozzle outlets, a first fuel inlet and a second fuel inlet. A dual solenoid actuator includes a first armature, a first coil, a second armature and a second coil that share a common centerline. The dual solenoid actuator has a non-injection configuration at which the first armature is at an un-energized position and the second armature is at an un-energized position. The dual solenoid actuator has a first fuel injection configuration at which the first fuel inlet is fluidly connected to the first set of nozzle outlets, the first armature is at an energized position and the second armature is at the un-energized position.
    Type: Grant
    Filed: May 11, 2011
    Date of Patent: March 3, 2015
    Assignee: Caterpillar Inc.
    Inventors: Hoisan Kim, Mark F. Sommars, Xiangdong Ding
  • Patent number: 8960155
    Abstract: A fuel separation device is configured to separate the first fuel from the mixed fuel to have a concentration of the high-octane fuel not more than a prescribed upper limit value. The prescribed upper limit is defined that a consumed amount of the high-octane fuel measured under a condition that the internal combustion engine is operated at an operation mode including a state in which a fuel injection amount from a first fuel injection valve for the first fuel is equal to a lower injection amount limit by using the first fuel and the second fuel separated by the fuel separation device is less than a consumed amount of the high-octane fuel measured under at the above operation mode by using the first fuel and the second fuel having the concentration of the high-octane fuel at 100% and 0%, respectively, by a prescribed amount or more.
    Type: Grant
    Filed: February 1, 2012
    Date of Patent: February 24, 2015
    Assignee: Honda Motor Co., Ltd.
    Inventors: Junichi Kamio, Yasuyuki Kubo
  • Patent number: 8955468
    Abstract: Method of operating a compression ignition engine on ether containing fuel obtained by on board conversion of an alcohol containing primary fuel and a system for use in the method. The ether containing fuel is prepared by dehydration of liquid alcohol containing fuel in present of a dehydration catalyst arranged in a radial flow reactor within a fuel accumulation chamber in a common rail.
    Type: Grant
    Filed: March 2, 2011
    Date of Patent: February 17, 2015
    Assignee: Haldor Topsoe A/S
    Inventors: Christophe Duwig, Jesper Norsk, Ton V.W. Janssens, Pär L. Gabrielsson
  • Patent number: 8954258
    Abstract: A pressure-reducing regulator for CNG fuel includes a high pressure sensor that detects fuel pressure at an inlet, a filter element that filters fuel, an orifice that provides access to a pressure reduction chamber, and a movable pintle located within the orifice, such that a flow rate of fuel through the orifice varies according to a position of the pintle within the orifice. The pressure-reducing regulator further includes a motor that moves the pintle, a low pressure sensor that detects fuel pressure at an outlet and a control unit comprising a processor. The process is configured for reading data from the high pressure sensor, data from the low pressure sensor and vehicle data from an engine, calculating a desired position of the pintle based on the sensor data and the vehicle data, and transmitting a signal to the motor for moving the pintle to the desired position.
    Type: Grant
    Filed: October 1, 2012
    Date of Patent: February 10, 2015
    Inventors: Roger Mark Toale, George Takahiro Suzuki
  • Patent number: RE45413
    Abstract: An improved multi-fuel supply and co-injection system and method for powering internal combustion and turbine engines, whereby various combinations of fuels, both liquid and gaseous, may be mixed together and fed into the system, under the real-time control of a microprocessor responding to a variety of sensors and acting on a variety of control devices, all working together in a manner designed to enhance the utilization of the thermal content of the various fuels, and in particular to enhance the combustion efficiency and increase the power output while decreasing the consumption of fuel, calculated both by quantity and by cost and whereby the liquid fuel lubricates the moving parts of the injection system.
    Type: Grant
    Filed: January 2, 2013
    Date of Patent: March 17, 2015
    Inventor: Morten A. Lund