Air Or Fuel Vapor Purging System Patents (Class 123/516)
  • Patent number: 10414270
    Abstract: The present disclosure provides a method for opening a refueling door of a vehicle. The method comprises adjusting a speed of opening the refueling door based on a fuel tank vapor pressure in response to a detected refueling request. Another aspect of the present disclosure provides a refueling door assembly for a vehicle. The refueling door assembly comprises a fuel tank; a refueling inlet to receive a fuel dispensing nozzle; a fuel fill line coupled between the fuel tank and the refueling inlet; a refueling door located at a vehicle body; an operating mechanism connected to the refueling door to open and close the refueling door; and a control module configured to open the refueling door responsive to a refueling request and control an opening speed of the operating mechanism based on a fuel tank vapor pressure.
    Type: Grant
    Filed: August 3, 2017
    Date of Patent: September 17, 2019
    Assignee: Ford Global Technologies LLC
    Inventors: Charles Qin, Russell Randall Pearce, Neil Wu, Le Hong
  • Patent number: 10400689
    Abstract: A fuel tank system includes a fuel tank, a canister, a first path, a pump, a switching device, a reference path, a first on-off valve, a second on-off valve, a third on-off valve, a pressure sensor, and a control device configured to control the pump, the switching device, the first on-off valve, the second on-off valve, and the third on-off valve and determine a system state based on a pressure measured by the pressure sensor.
    Type: Grant
    Filed: December 19, 2017
    Date of Patent: September 3, 2019
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yojiro Iriyama, Chiaki Kataoka, Masanobu Shinagawa
  • Patent number: 10399434
    Abstract: Disclosed is a method for controlling the pressure inside a fuel tank of a motor vehicle, the motor vehicle including a fuel vapor vent circuit connecting the tank to a fuel vapor canister, the vent circuit including an isolation valve for isolating the tank and a rollover valve. The pressure control method includes steps of: determining an activation duration required for the isolation valve to transition from a closed state to a fully open state, referred to as the “full opening duration”, when a predefined rollover valve closure risk criterion is satisfied: controlling the isolation valve in repeated activations of respective durations that are shorter than the full opening duration.
    Type: Grant
    Filed: June 23, 2016
    Date of Patent: September 3, 2019
    Assignees: CONTINENTAL AUTOMOTIVE FRANCE, CONTINENTAL AUTOMOTIVE GMBH, AUDI AG
    Inventors: Oliver Grunwald, Thierry Collet, Aurelien Groussard
  • Patent number: 10393071
    Abstract: Methods and systems are provided for conducting an evaporative emissions test diagnostic on a vehicle fuel system and evaporative emissions control system during engine-on conditions. In one example, a first fuel vapor storage device is separated from a second fuel vapor storage device by a one-way check valve, thus preventing loading of the first fuel vapor storage device during conditions such as refueling operations, diurnal temperature fluctuations, or from running-loss vapors from a vehicle fuel tank. In this way, the evaporative emissions test diagnostic may be conducted during a cold-start event where an exhaust catalyst is below a predetermined threshold temperature required for catalytic oxidation of hydrocarbons in the engine exhaust, without increasing undesired exhaust emissions.
    Type: Grant
    Filed: June 20, 2016
    Date of Patent: August 27, 2019
    Assignee: Ford Global Technologies, LLC
    Inventors: Aed M. Dudar, Mark W. Peters
  • Patent number: 10350993
    Abstract: A fuel tank system having a fuel tank and a fuel vapor recovery system including a vapor vent line fluidly coupled between the fuel tank and a canister, and a vapor purge line fluidly coupled to the canister. A multiplex director is selectively fluidly coupled to a first location in the fuel vapor recovery system and a second location in the fuel vapor recovery system. The multiplex director is movable between a first position where the multiplex director is fluidly coupled to the first location and is fluidly blocked from the second location, and a second position where the multiplex director is fluidly coupled to the second location and is fluidly blocked from the first location. The multiplex director is configured to monitor at least one of a pressure and a hydrocarbon concentration in the first location and the second location when fluidly coupled thereto.
    Type: Grant
    Filed: September 28, 2017
    Date of Patent: July 16, 2019
    Assignee: Eaton Corporation
    Inventor: Vaughn K. Mills
  • Patent number: 10354459
    Abstract: A first vehicle includes a hydrocarbon sensor and a controller in communication with the hydrocarbon sensor. The controller is programmed to receive data from the hydrocarbon sensor indicating hydrocarbon emissions and determine that the hydrocarbon emissions originated in a second vehicle and are exceed a predetermined threshold. The controller may further be programmed to transmit a message reporting the hydrocarbon emission to a remote server.
    Type: Grant
    Filed: October 6, 2016
    Date of Patent: July 16, 2019
    Assignee: FORD GLOBAL TECHNOLOGIES, LLC
    Inventors: Aed M. Dudar, Douglas Raymond Martin, Kenneth James Miller
  • Patent number: 10343516
    Abstract: A fuel tank arrangement for a dual fuel internal combustion engine includes a fuel tank arranged to supply liquid fuel to the dual fuel internal combustion engine, wherein the fuel tank arrangement includes a return conduit connected to the fuel tank and configured to supply leaked fuel from the dual fuel internal combustion engine to the fuel tank, wherein the fuel tank arrangement includes a first fuel separation arrangement positioned in fluid communication between the fuel tank and an outlet to an ambient environment thereof.
    Type: Grant
    Filed: October 9, 2015
    Date of Patent: July 9, 2019
    Assignee: Volvo Truck Corporation
    Inventor: Sigurd Sonderegger
  • Patent number: 10331839
    Abstract: A computer-implemented method of generating randomized electrical interconnects for an electronic circuit comprises steps of receiving a netlist of nodes of electronic components to be connected, each connection of nodes forming an electrical interconnect; determining a list of one or more path directions for each electrical interconnect; determining a plurality of path direction distances for each electrical interconnect; generating a plurality of segments for each electrical interconnect, each segment having one path direction and a length which are selected at random; calculating a sum of the lengths of all of the segments in each path direction each time a segment is generated for each electrical interconnect; removing one path direction from the list of path directions when a first condition is met; and stopping the generating a plurality of segments for each electrical interconnect when a second condition is met.
    Type: Grant
    Filed: August 18, 2017
    Date of Patent: June 25, 2019
    Assignee: Honeywell Federal Manufacturing & Technologies, LLC
    Inventor: Joshua Trujillo
  • Patent number: 10315511
    Abstract: A vehicle includes a seat, an engine, a fuel tank, a canister connected to the fuel tank via a gas pipe, a breather pipe, and a drainpipe. The fuel tank is located lower than a seat surface of the seat. The canister adsorbs evaporation gas generated by evaporation of fuel inside the fuel tank. The breather pipe includes an inlet connected to the canister, and an outlet located at a higher position than the seat surface of the seat and open to the atmosphere. The drainpipe includes a drain hole located lower than the outlet, and branches from the breather pipe.
    Type: Grant
    Filed: July 5, 2018
    Date of Patent: June 11, 2019
    Assignee: YAMAHA HATSUDOKI KABUSHIKI KAISHA
    Inventors: Tomoyuki Hayashi, Masahide Shinbori, Keisuke Imura
  • Patent number: 10279679
    Abstract: A valve device forming a ventilation flow channel of a fuel tank includes a float valve; an inside case including a valve opening relative to the float valve at an upper portion, and housing the float valve; an outside case receiving the inside case from an upper open end, and provided with a bottom portion; and an attachment portion relative to a tank side. A flow channel which becomes one portion of the ventilation flow channel is formed between a side portion of the inside case and a side portion of the outside case, and a through hole is provided in the side portion of the inside case. Furthermore, an engagement claw relative to the outside case is provided directly above the through hole.
    Type: Grant
    Filed: March 16, 2016
    Date of Patent: May 7, 2019
    Assignee: NIFCO INC.
    Inventor: Toshio Wada
  • Patent number: 10259314
    Abstract: A fuel tank system 12 includes: a communicating pipe 30 that has plural open portions 54A and 54B positioned higher than a full level inside a fuel tank 14 and communicates the inside of the fuel tank 14 with a canister 32; and a valve member 42 that is disposed outside the fuel tank 14 and, on the basis of a state of inclination of fuel detected by a fuel inclination sensor 60, closes the communicating pipe corresponding to an open portion predicted to be positioned in the fuel and opens the communicating pipe corresponding to an open portion predicted to be positioned in a gas layer section.
    Type: Grant
    Filed: November 14, 2016
    Date of Patent: April 16, 2019
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Shuichi Aso, Shinsuke Kinoshita
  • Patent number: 10227954
    Abstract: A canister valve device for a vehicle that is equipped with a shutoff valve device connected to a pipe providing a passage for air to flow to a canister and selectively opening and closing the passage of the pipe, may include a diverging channel diverging from the passage of the pipe to a position where the shutoff valve device is positioned to provide a passage for a portion of air flowing to the pipe; and a check valve device positioned in the diverging channel, closing when the shutoff valve device closes, and opening when the shutoff valve device opens so that air is distributed to the pipe and the diverging channel, whereby negative pressure applied to the shutoff valve device is configured to be reduced by flow of the air.
    Type: Grant
    Filed: November 29, 2016
    Date of Patent: March 12, 2019
    Assignee: Hyundai Motor Company
    Inventors: Chang Han Kim, Jae Hwa Park, Jung Su Park
  • Patent number: 10167803
    Abstract: An engine includes a plurality of combustion cylinders configured to burn a fuel to power the engine, and a plurality of fuel injectors. Each of the fuel injectors is arranged to distribute fuel delivered from a fuel tank to one of the plurality of combustion cylinders. The engine also includes a controller programmed to adjust a fuel trim signal gain based on sensing exhaust flow downstream of the combustion cylinders. The controller is also programmed to monitor a cumulative misfire count for each of the plurality of combustion cylinders. The controller is further programmed to issue a prognosis message identifying a state of health of at least one of the plurality of fuel injectors in response to a fuel trim signal gain exceeding an adjustment threshold and a cumulative misfire count greater than a misfire threshold.
    Type: Grant
    Filed: June 1, 2016
    Date of Patent: January 1, 2019
    Assignee: GM Global Technology Operations LLC
    Inventors: Azeem Sarwar, Chaitanya Sankavaram, Ian J. Macewen, Steven Ward Majors, Scott R. Jeffrey, Rafat F. Hattar
  • Patent number: 10100771
    Abstract: Methods and systems are provided for performing rationality check of a hydrocarbon sensor in an evaporative emission control system. In one example, a method may include sensing fuel vapors vented from a fuel vapor canister to atmosphere via the sensor, and performing sensor rationality check by flowing desorbed hydrocarbons from the fuel vapor canister to an engine via the sensor during purging of the fuel vapor canister.
    Type: Grant
    Filed: July 20, 2016
    Date of Patent: October 16, 2018
    Assignee: Ford Global Technologies, LLC
    Inventor: Aed M. Dudar
  • Patent number: 10094728
    Abstract: Provided are: a vacuum gauge that, with a simple configuration, can accurately diagnose the degree of contamination of the vacuum gauge; and a contamination diagnosis method that, with a simple process, can accurately diagnose the degree of contamination of a vacuum gauge. Provided is a cold cathode ionization vacuum gauge that has a normal operation mode and a contamination diagnosis mode, the cold cathode ionization vacuum gauge comprising: an anode 1 and a cathode 3 that are for measuring vacuum pressure in the normal operation mode; an anode 7 and the cathode 3 that are for measuring the vacuum pressure in the contamination diagnosis mode; and a controller 10 that compares the size of a current measured between the anode 7 and the cathode 3 and the size of a current measured between the anode 1 and the cathode 3.
    Type: Grant
    Filed: July 29, 2015
    Date of Patent: October 9, 2018
    Assignee: National Institute of Advanced Industrial Science and Technology
    Inventor: Hajime Yoshida
  • Patent number: 10040448
    Abstract: Methods and systems are provided for detecting and mitigating the presence of liquid fuel carryover in an evaporative emissions control system of a vehicle in response to a refueling event. In one example, an electric motor is operated to spin a vehicle engine unfueled in reverse in order to pressurize the evaporative emissions system and the fuel system responsive to an indication of liquid fuel in the vapor recovery lines. In this way, indication of liquid fuel carryover following a refueling event may be quickly diagnosed, and mitigating actions may be taken to ensure liquid fuel is returned to the tank prior to contacting the adsorbent material within the vapor canister.
    Type: Grant
    Filed: November 12, 2015
    Date of Patent: August 7, 2018
    Assignee: Ford Global Technologies, LLC
    Inventor: Aed M. Dudar
  • Patent number: 9983090
    Abstract: The invention relates to a system (1) and to a corresponding method for tank leakage diagnosis. The system (1) comprises a fuel tank (3), a pressure source (5, 9), and a pressure sensor (7). The pressure source (5, 9) is configured to increase the pressure in the fuel tank (3). The pressure sensor (7) is configured to detect the pressure progression at the fuel tank (3). The system (1) is configured to seal the fuel tank (3) in a gas-tight manner such that the fuel tank (3) can be used as a pressure store. Furthermore, the system (1) is configured to conclude, independently of a current operation of the pressure source (5, 9) based on the determined pressure progression at the fuel tank (3), that a leak is present.
    Type: Grant
    Filed: September 25, 2014
    Date of Patent: May 29, 2018
    Assignee: Robert Bosch GmbH
    Inventors: Peter Klee, Andreas Posselt, Marko Lorenz, Andreas Gutscher, Roland Kurz, Thomas Wieczorek, Thomas Herges, Joerg Koenig, Florian Guenther, Johannes Hoegl
  • Patent number: 9976520
    Abstract: A vaporized fuel processing apparatus in which, if an internal pressure of a fuel tank is high when refueling, a closing valve opens before a refueling cap opens, so that vaporized fuel is flown to a canister via a path with a float valve to lower the internal pressure of the tank. The apparatus includes a refueling switch for instructing a start of refueling to the fuel tank, an internal pressure sensor for detecting a space pressure inside the tank, and a closing valve control means for, if the refueling start signal is output from the refueling switch and the internal pressure of the fuel tank is higher than a set pressure, opening the closing valve within a range in which the float valve does not operate, and increasing the valve-opening speed of the closing valve in accordance with a reduction in the internal pressure of the fuel tank.
    Type: Grant
    Filed: August 27, 2015
    Date of Patent: May 22, 2018
    Assignee: AISAN KOGYO KABUSHIKI KAISHA
    Inventors: Junya Kimoto, Yoshikazu Miyabe
  • Patent number: 9957906
    Abstract: Methods and systems are provided for estimating a positive crankcase ventilation (PCV) flow based on outputs of an intake manifold oxygen sensor. For example, during engine operation when exhaust gas recirculation (EGR) and fuel canister purge are disabled, PCV flow may be estimated based on a difference between a first output of the sensor with boost enabled and a second output of the sensor with boost disabled. Then, during subsequent operation wherein EGR is enabled, PCV flow is enabled, and purge is disabled, a third output of the sensor may be adjusted based on the estimated PCV flow.
    Type: Grant
    Filed: November 6, 2013
    Date of Patent: May 1, 2018
    Assignee: Ford Gloabl Technologies, LLC
    Inventors: Gopichandra Surnilla, James Alfred Hilditch, Matthew John Gerhart, Lynn Aimee Chesney, Stephen B. Smith
  • Patent number: 9945307
    Abstract: A method for improving a change of fuel in a bi-fuel vehicle includes: a step of measuring an LPG level in an LPG fuel tank; a pressure reference driving step of continuing the driving of the vehicle using the LPG fuel; a pressure change rate reference driving step of continuing the driving of the vehicle using the LPG fuel when it is determined that the vehicle may be driven by the LPG fuel by comparing an LPG rail pressure change quantity and a pressure change quantity in the LPG fuel tank with a set reference value; and a fuel expanding step of continuing the driving of the vehicle using the LPG fuel when it is determined that the vehicle may be driven by the LPG fuel by comparing an injection quantity of LPG fuel and an accumulated value of mileage with a set reference value.
    Type: Grant
    Filed: April 8, 2015
    Date of Patent: April 17, 2018
    Assignees: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION
    Inventor: Yoo Jin Seo
  • Patent number: 9945336
    Abstract: A fuel supply device includes a return fuel utilization buffer jar that conducts fuel into a fuel inlet port of a first three-way valve including a one-way check valve to allow the fuel to flow, uni-directionally, from the fuel inlet port to a fuel outlet port. Return fuel from an engine is conducted in through a return fuel inlet port of the return fuel utilization buffer jar. Fuel vapor in the return fuel utilization buffer jar is guided from a gas inlet port of a second three-way valve through a gas outlet port to a fuel tank. Vapor pressure in the return fuel utilization buffer jar is regulated by a ventilation port that is mounted in the second three-way valve and includes a one-way check valve in a direction toward the gas inlet port.
    Type: Grant
    Filed: May 16, 2016
    Date of Patent: April 17, 2018
    Assignee: TOP 1 GREEN DEVELOPMENT CO., LTD.
    Inventor: Wan Kang Shen
  • Patent number: 9937785
    Abstract: A fuel tank supplying device includes: a fuel tank that can accommodate fuel at an interior; a circulation flow path that is connected to an interior of the fuel tank and a fuel refueling port side, and that circulates evaporated fuel vapor that is within the fuel tank to the fuel refueling port side; a variable valve that is provided on the circulation flow path, and adjusts a circulated amount of the evaporated fuel vapor; and air-passage flow path inner diameter changing means that is provided at the variable valve, and that is for changing an inner diameter of a air-passage flow path, through which the evaporated fuel vapor flows, in accordance with internal pressure of the fuel tank, and that, when the internal pressure of the fuel tank is equal to or greater than a predetermined value, makes the inner diameter of the air-passage flow path smaller.
    Type: Grant
    Filed: September 25, 2015
    Date of Patent: April 10, 2018
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Shinji Shimokawa
  • Patent number: 9909539
    Abstract: In pressure increasing control for raising a pressure within a sealed type fuel tank from an excessive negative pressure to a low negative pressure, an opening or closing operation of a sealing valve, when the interior of a vehicle is very quiet, may cause the working noise thereof to be transmitted to a passenger, thereby deteriorating the noise characteristic. When the pressure within a fuel tank is below a predetermined negative pressure near a saturated vapor pressure of the fuel and an interior noise level is equal to or greater than a threshold value, a controller may operate a sealing valve to thereby raise the pressure of the fuel tank to a normal negative pressure region which may be higher than the predetermined negative pressure.
    Type: Grant
    Filed: December 17, 2015
    Date of Patent: March 6, 2018
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Keita Fukui, Yusaku Nishimura, Tatsuhiko Akita
  • Patent number: 9902258
    Abstract: A fuel tank vent valve includes a venting apparatus for regulating discharge of fuel vapor from a fuel tank and admission of outside air into a fuel tank. The vent valve is used to regulate pressure in a fuel tank.
    Type: Grant
    Filed: March 25, 2016
    Date of Patent: February 27, 2018
    Assignee: Stant USA Corp.
    Inventor: Kevin L Young
  • Patent number: 9878612
    Abstract: A fuel container, in particular for motor vehicles, comprising an aereation and de-aereation device for balancing the internal gas pressure during filling of the container with fuel and during consumption of the fuel during the operation of a working machine powered by the fuel. The aereation and de-aereation device has a separator device for separating liquid fuel from an aereation and de-aereation line. In order to permit the separator device to be emptied, if a fuel pump, which serves this purpose during normal operation, is not in operation, the separator device comprises a housing and a pipe nozzle which is connected to the housing either directly or via a pipeline and in which pressure fluctuations occur as a result of incoming and outgoing fuel, said fluctuations acting as a pump for emptying the separator device.
    Type: Grant
    Filed: March 6, 2014
    Date of Patent: January 30, 2018
    Assignee: TI Automotive Technology Center GmbH
    Inventors: Albert J. Boecker, Andreas W. Dobmaier, Alex Ehler, Patrick Gmuend, Peter Grauer, Gerrit Michaelis, Matthias B. Olbrich
  • Patent number: 9863376
    Abstract: A canister structure comprising: a canister 28 in which activated carbon 44 is accommodated, the activated carbon 44 being for adsorbing evaporated fuel produced in a fuel tank; an atmosphere vent tube 30 connected to the canister28, the atmosphere vent tube 30 introducing air into the canister 28 and causing evaporated fuel adsorbed by the activated carbon 44 to be desorbed when a negative pressure acts in the canister 28; and a fuel pump controller 46 disposed in the canister28, the fuel pump controller 46 controlling flow rates of fuel being supplied from the fuel tank to an engine, and the fuel pump controller 46 generating heat due to being operated.
    Type: Grant
    Filed: July 22, 2016
    Date of Patent: January 9, 2018
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Shuichi Aso
  • Patent number: 9863922
    Abstract: An aftertreatment system utilizes chemical reactions to treat an exhaust gas flow. A system for aftertreatment of the exhaust gas flow includes a NOx sensor configured to monitor within the exhaust gas flow one of a lambda value and a NOx concentration value and a computerized processor device configured to calibrate the monitored value for presence of one of NH3, H2, and hydrocarbons. In one embodiment, the system further includes a pair of NOx sensors, each monitoring both a lambda value and a NOx concentration value. In another embodiment, the system controls the aftertreatment based upon the calibrated values.
    Type: Grant
    Filed: October 29, 2014
    Date of Patent: January 9, 2018
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Gongshin Qi, Kevin L. Perry
  • Patent number: 9856805
    Abstract: A method is provided, comprising indicating a fuel vapor canister load based on a steady-state fuel vapor circulation rate in a vapor recovery line during a refueling event; and adjusting a canister purging operation in response to the indicated fuel vapor canister load. Restrictions in the vapor recovery line may increase the rate of fuel vapor canister loading during a refueling event. In this way, an accurate canister load may be determined following a refueling event, and canister purging operations adjusted accordingly.
    Type: Grant
    Filed: September 28, 2015
    Date of Patent: January 2, 2018
    Assignee: Ford Global Technologies, LLC
    Inventor: Aed M. Dudar
  • Patent number: 9856804
    Abstract: A method is provided, comprising indicating a fuel vapor canister load based on a steady-state fuel vapor circulation rate in a vapor recovery line during a refueling event; and adjusting a canister purging operation in response to the indicated fuel vapor canister load. Restrictions in the vapor recovery line may increase the rate of fuel vapor canister loading during a refueling event. In this way, an accurate canister load may be determined following a refueling event, and canister purging operations adjusted accordingly.
    Type: Grant
    Filed: May 29, 2015
    Date of Patent: January 2, 2018
    Assignee: Ford Global Technologies, LLC
    Inventors: Dennis Seung-Man Yang, Aed M. Dudar, Russell Randall Pearce, Rob Ognjanovski, Jr.
  • Patent number: 9834089
    Abstract: A fuel tank structure includes: a fuel tank that is installed in an automobile and that accommodates fuel; a bag-shaped member that is fixed to a ceiling portion of an interior of the fuel tank, and whose state of contact with a liquid surface of fuel accommodated in the fuel tank is maintained due to the bag-shaped member inflating or deflating in accordance with a height of the liquid surface; a temperature sensor that senses a temperature of the fuel or evaporated fuel that is within the fuel tank; and a cooling wind introducing section that introduces cooling wind into an interior of the bag-shaped member in a case in which the temperature of the fuel or the evaporated fuel detected by the temperature sensor becomes higher than a predetermined temperature.
    Type: Grant
    Filed: March 16, 2016
    Date of Patent: December 5, 2017
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Shuichi Aso
  • Patent number: 9828951
    Abstract: Methods and systems are provided for opportunistically conducting an evaporative emissions test diagnostic procedure in order to indicate the presence or absence of undesired evaporative emissions in a vehicle evaporative emissions control system and fuel system. In one example, tire pressure and barometric pressure are monitored, and responsive to a tire pressure decrease in the absence of a barometric pressure increase, along with an indication that the vehicle transmission is in neutral and that the vehicle is not traveling downhill, the evaporative emissions system and fuel system may be sealed and the presence or absence of undesired evaporative emissions indicated based on a vacuum-build. In this way, an opportunistic evaporative emissions test may be conducted based on conditions favorable to conducting an emissions test procedure, and may thus increase test completion rates and reduce undesired evaporative emissions.
    Type: Grant
    Filed: April 6, 2016
    Date of Patent: November 28, 2017
    Assignee: Ford Global Technologies, LLC
    Inventor: Aed M. Dudar
  • Patent number: 9803592
    Abstract: Methods and systems for controlling and reducing current consumption of a vapor blocking valve are disclosed. In one example, current supplied to the vapor blocking valve is adjusted proportionately to fuel tank pressure to compensate for fuel tank pressure acting on the vapor blocking valve. Vapor blocking valve current is adjusted to reduce current consumption.
    Type: Grant
    Filed: June 3, 2015
    Date of Patent: October 31, 2017
    Assignee: Ford Global Technologies, LLC
    Inventors: Ross Dykstra Pursifull, Mark W. Peters, Brian Thomas Aitken
  • Patent number: 9802479
    Abstract: A tank sealing valve arranged in a passage network through which a fluid flows between a fuel tank and a canister includes a first valve unit and a second valve unit. A first port and a second port of three ports included in an outer case body of the first valve unit are open toward a first chamber of two chambers divided by a diaphragm or a bellows of the first valve unit, and a third port of the three ports is open toward a second chamber of the two chambers. A valve body of the first valve unit includes a through passage penetrating a valve portion and a column portion of the valve body. The valve portion communicates with the first port and the second chamber through the through passage in a case where the first port is closed. The second valve unit opens and closes the third port.
    Type: Grant
    Filed: August 3, 2016
    Date of Patent: October 31, 2017
    Assignee: DENSO CORPORATION
    Inventor: Yuichiro Miura
  • Patent number: 9771900
    Abstract: A fuel vapor processing apparatus may include a canister. A negative pressure applying device for applying a negative pressure to the canister may be disposed in a purge passage communicating between the canister and an intake pipe of an engine. A pressure adjusting device may be disposed in a portion of the purge passage communicating between the fuel tank and the negative pressure applying device.
    Type: Grant
    Filed: March 28, 2016
    Date of Patent: September 26, 2017
    Assignee: AISAN KOGYO KABUSHIKI KAISHA
    Inventors: Katsuhiko Makino, Atsushi Sugimoto, Keisuke Wakamatsu
  • Patent number: 9759143
    Abstract: In an evaporation fuel processing apparatus, a canister holds an evaporation fuel evaporated in a fuel tank, a purge passage communicates with the canister and an intake passage of an engine, a purge pump disposed in the purge passage pressurizes and feeds an air in the canister toward the intake passage, a bypass passage disposed in the purge passage bypasses the purge pump, and an on-off valve disposed in the purge passage opens and closes the bypass passage. When an intake negative pressure of the intake passage is low, the purge pump is activated, and the bypass passage is closed by the on-off valve. When the intake negative pressure of the intake passage is not low, the purge pump is stopped, and the bypass passage is open by the on-off valve.
    Type: Grant
    Filed: June 2, 2015
    Date of Patent: September 12, 2017
    Assignee: DENSO CORPORATION
    Inventor: Hidetoshi Ooiwa
  • Patent number: 9752521
    Abstract: Methods and systems are provided for regulating a flow of fuel vapors from a fuel tank to an engine during an engine start. In one example, a method may comprise prior to a cold start of an engine: sealing a fuel tank from an evaporative emissions control system and an air intake of the engine, operating a fuel pump of the fuel tank to generate vapors in the fuel tank, and in response to fuel vapor levels in the fuel tank reaching a threshold, initiating cylinder combustion and flowing fuel vapors from the fuel tank to an intake manifold of the engine. The method may further comprise providing liquid fuel to the engine to initiate cylinder combustion.
    Type: Grant
    Filed: September 18, 2015
    Date of Patent: September 5, 2017
    Assignee: Ford Global Technologies, LLC
    Inventor: Aed M. Dudar
  • Patent number: 9745907
    Abstract: A method is provided, comprising indicating a fuel vapor canister load based on a steady-state pressure in a vapor recovery line during a refueling event; and adjusting a canister purging operation in response to the indicated fuel vapor canister load. Restrictions in the vapor recovery line may increase the rate of fuel vapor canister loading during a refueling event. In this way, an accurate canister load may be determined following a refueling event, and canister purging operations adjusted accordingly.
    Type: Grant
    Filed: January 27, 2015
    Date of Patent: August 29, 2017
    Assignee: Ford Global Technologies, LLC
    Inventors: Aed M. Dudar, Russell Randall Pearce, Dennis Seung-Man Yang
  • Patent number: 9725010
    Abstract: A fuel cell vehicle includes a fuel cell, a fuel storage container, a container installation space, a fill lid box, and a fuel gas detector. The fuel cell is to generate power through an electrochemical reaction between a fuel gas and an oxidant gas. At least part of the fuel storage container is disposed in the container installation space. The fill lid box includes a gas fill port inside the fill lid box and has a communication hole to connect an inside of the fill lid box with the container installation space. The fuel gas is to be supplied through the gas fill port into the fuel storage container from an outside of the fuel cell vehicle. The fuel gas detector is disposed inside the fill lid box to detect a fuel gas leakage and to detect a fuel gas density in the container installation space.
    Type: Grant
    Filed: August 27, 2015
    Date of Patent: August 8, 2017
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Akihiro Suzuki, Mitsunori Matsumoto
  • Patent number: 9709006
    Abstract: Methods and systems are provided for depressurizing a fuel tank prior to refueling the fuel tank. One example method includes adjusting a latchable refueling valve to a latched open position to enable vapor flow from the fuel tank to a vapor canister at a first rate, and responsive to fuel tank pressure being higher than a first pressure threshold after a pre-determined duration at the latched open position, modifying the latchable refueling valve to an unlatched open position. The unlatched open position of the latchable refueling valve enables a second flow rate for fuel vapors, the second flow rate higher than the first flow rate at the latched open position.
    Type: Grant
    Filed: April 8, 2015
    Date of Patent: July 18, 2017
    Assignee: Ford Global Technologies, LLC
    Inventors: Mark W. Peters, Bryan Michael Bolger, Dennis Seung-Man Yang, Russell Randall Pearce
  • Patent number: 9709007
    Abstract: Methods and systems are provided for adjusting a vehicle operation based on an output of a hydrocarbon sensor located in a canister vent line coupling a fuel vapor canister and the atmosphere in order to reduce exhaust and evaporative emissions, and improve fuel economy while providing improved cabin comfort. Specifically, in response to determining an ambient hydrocarbon amount greater than a threshold based on the hydrocarbon sensor output during purging, the purging operation may be terminated, and the canister may be sealed from the atmosphere. Further, in response to the determination, a vehicle climate control system may be adjusted to stop providing fresh air to the vehicle cabin and provide only cabin air recirculation, and an engine operation may be adjusted such that a ratio of a port fuel injection amount to a direct fuel injection amount is increased.
    Type: Grant
    Filed: April 22, 2015
    Date of Patent: July 18, 2017
    Assignee: Ford Global Technologies, LLC
    Inventor: Aed M. Dudar
  • Patent number: 9689324
    Abstract: A vaporized fuel processing apparatus has a closing valve provided in a vapor path connecting an adsorbent canister to the fuel tank, a pressure sensor configured to detect the inner pressure of the fuel tank, and an electric control unit configured to determine whether the amount of increase in the inner pressure of the fuel tank is within an acceptable range or not, to learn a valve opening start position of the closing valve when the inner pressure of the fuel tank is reduced by an amount not less than a predetermined value, and to stop or prohibit the learning of the valve opening start position of the closing valve when the amount of increase in the inner pressure of the fuel tank is not within the acceptable range during or before the learning of the valve opening start position of the closing valve.
    Type: Grant
    Filed: December 5, 2014
    Date of Patent: June 27, 2017
    Assignee: AISAN KOGYO KABUSHIKI KAISHA
    Inventors: Minoru Akita, Yoshikazu Miyabe, Naoyuki Tagawa
  • Patent number: 9657661
    Abstract: An engine control system is a system configured to selectively switch between first fuel and second fuel and perform an operation control of a single engine, including: a sensor configured to detect an oxygen concentration of an exhaust gas that is exhausted from the engine; and a control device configured to perform an air-fuel ratio feedback control such that an air-fuel ratio becomes a target air-fuel ratio based on an output signal of the sensor, wherein the control device calculates a correction coefficient of an air-fuel ratio feedback control during an operation with the second fuel, and further stores a fuel composition correction coefficient that is a value in a predetermined range and corrects a difference between the calculated correction coefficient and a targeted correction coefficient arising from a change in composition of the second fuel.
    Type: Grant
    Filed: April 17, 2015
    Date of Patent: May 23, 2017
    Assignee: KEIHIN CORPORATION
    Inventors: Takashi Hibira, Shinji Yokoyama, Masaya Ootsuka, Makoto Haruta, Noriaki Sumisya
  • Patent number: 9650974
    Abstract: A method for an engine is presented, comprising, following an engine-off event, positioning a first engine cylinder with an intake valve open, opening a canister purge valve; and purging contents of the first engine cylinder to a fuel vapor canister. In this way, uncombusted fuel that may otherwise be emitted from the engine during a prolonged diurnal soak may be stored within the fuel vapor canister, thus decreasing overall vehicle emissions.
    Type: Grant
    Filed: January 27, 2015
    Date of Patent: May 16, 2017
    Assignee: Ford Global Technologies, LLC
    Inventor: Aed M. Dudar
  • Patent number: 9650053
    Abstract: An optimal tire slip ratio estimation system and method affixes a tire-identification device to a vehicle tire to provide a tire-specific identification and one or more sensors affixed to the tire for measuring one or more tire-specific parameters. A model-based optimal slip ratio estimator generates a model-derived optimal tire slip ratio estimation based upon an assessment of sensor-derived tire-specific parameter information based on the tire-specific identification.
    Type: Grant
    Filed: December 3, 2014
    Date of Patent: May 16, 2017
    Assignee: The Goodyear Tire & Rubber Company
    Inventors: Kanwar Bharat Singh, Srikanth Veppathur Sivaramakrishnan
  • Patent number: 9638143
    Abstract: A vaporized fuel processing apparatus has a fuel tank, a canister configured to adsorb vaporized fuel and connected to an internal combustion engine, a vapor path connecting the fuel tank to the canister, a closing valve having a stepping motor and configured to open and close the vapor path, and an electric control unit configured to cause the closing valve to an initial position in order to initialize the closing valve. The electric control unit is configured to determine whether it is in a predetermined initialization permission time when the initialization of the closing valve does not adversely affect running of the internal combustion engine. When it is determined that it is in the predetermined initialization permission time, the electric control unit is configured to output signals to start the initialization of the closing valve.
    Type: Grant
    Filed: May 18, 2015
    Date of Patent: May 2, 2017
    Assignee: AISAN KOGYO KABUSHIKI KAISHA
    Inventor: Yuzuru Ito
  • Patent number: 9624875
    Abstract: A valve assembly for a high-pressure fluid reservoir includes an isolation valve having a selectively energizable coil, an armature that is moveable between a first position when the coil is energized and a second position when the coil is de-energized, and an isolation valve seal coupled to the armature. The assembly also includes a float valve having a float with a passage at a bottom portion and an orifice at a top portion of the float, wherein the isolation valve seal is aligned to open and close the passage and wherein vapor flows through the passage and the orifice when the coil is energized during a high pressure condition. A housing houses both the isolation valve and the float valve and has a port that is opened and closed by the float valve.
    Type: Grant
    Filed: January 19, 2012
    Date of Patent: April 18, 2017
    Assignee: Eaton Corporation
    Inventors: Daniel Lee Pifer, Vaughn K. Mills
  • Patent number: 9593650
    Abstract: A fuel supply device is provided with a fuel pump and a filter. The fuel pump supplies fuel from a fuel tank to an engine. The filter is disposed upstream from the fuel pump in a fuel supply channel. The filter includes a first filter portion and a second filter portion. The first filter portion and the second filter portion filter the fuel. The second filter portion is disposed above the first filter portion when the filter is disposed inside the fuel tank. A density of gaps in the second filter portion is larger than a density of gaps in the first filter portion.
    Type: Grant
    Filed: March 24, 2014
    Date of Patent: March 14, 2017
    Assignees: YAMAHA HATSUDOKI KABUSHIKI KAISHA, MITSUBISHI ELECTRIC CORPORATION
    Inventors: Shinsuke Okada, Takuya Uryu
  • Patent number: 9581101
    Abstract: A method for the injection computation for an internal combustion engine, in particular for a gasoline range extender engine. This includes ascertaining an adaptation factor, which represents fuel aging, from a model of the fuel and a fuel outgassing via a tank vent and adaptation of a fuel injection quantity and/or a fuel injection time using the adaptation factor.
    Type: Grant
    Filed: March 28, 2013
    Date of Patent: February 28, 2017
    Assignee: ROBERT BOSCH GMBH
    Inventor: Martin Huber
  • Patent number: 9539894
    Abstract: A fuel tank includes a tank body having an outer wall formed of a synthetic resin layer having a multilayer structure. The tank body has at least an inner body layer (an inner adhesive layer and an inner base layer) and an outer body layer (a skin layer, an outer base layer, and an outer adhesive layer) between which a barrier layer is interposed. A structure having an air layer therein is attached to the outer side of the skin layer of the outer body layer.
    Type: Grant
    Filed: June 9, 2015
    Date of Patent: January 10, 2017
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Kotaro Tanaka, Shoichiro Kumagai, Hiroshi Kitamura
  • Patent number: 9534549
    Abstract: A method for purging a fuel tank includes providing a three-way valve connected to the fuel tank via a first purging line, connected to a second purging line opening into a suction duct and connected to a third purging line opening into an adsorption container. A first path can be released in the three-way valve, based on the pressure inside the fuel tank exceeding a first predetermined opening pressure inside the fuel tank and the engine being in operation, such that the fuel vapors are caused to be purge out of the fuel tank into the suction duct. A second path can also be released in the three-way valve, based on the pressure inside the fuel tank exceeding a second predetermined opening pressure inside the fuel tank and the engine being not in operation, such that the fuel vapors are caused to be purged out of the fuel tank into the adsorption container.
    Type: Grant
    Filed: October 23, 2014
    Date of Patent: January 3, 2017
    Assignee: AUDI AG
    Inventors: Etienne Costa-Patry, Michael Knieling