Air Or Fuel Vapor Purging System Patents (Class 123/516)
  • Patent number: 10844810
    Abstract: A leakage detecting device includes a first sensor, a second sensor, a pump, a leakage determination portion and a determination resetting portion. The first sensor, which is provided in a first passage connecting a fuel tank to a canister, detects density of vaporized fuel generated in the fuel tank. The second sensor, which is provided in a third passage connecting the canister to the pump, detects pressure in the third passage. The pump is provided between the third passage and an atmospheric passage. The leakage determination portion determines whether there is leakage in a vaporized fuel processing system or not, based on a time-variable amount of the pressure detected by the second sensor. The determination resetting portion resets a leakage determination result of the leakage determination portion, based on a time-variable amount of the density and the time-variable amount of the pressure.
    Type: Grant
    Filed: April 16, 2019
    Date of Patent: November 24, 2020
    Assignee: DENSO CORPORATION
    Inventors: Taiki Yasuzaka, Tomohiro Itoh
  • Patent number: 10828981
    Abstract: An evaporative emissions control system configured to recapture and recycle emitted fuel vapor on a vehicle fuel tank is provided. The control system includes a first and second vent tube disposed in the fuel tank, a first and second vent valve, a vent shut-off assembly, a purge canister and a control module. The vent shut-off assembly selectively opens and closes the first and second valves to provide overpressure and vacuum relief for the fuel tank. The control module regulates operation of the vent shut-off assembly based on operating conditions to vent the first and second vent valves to the purge canister. The vehicle fuel tank comprises a saddle tank having first and second lobes and a raised portion arranged generally at a top portion of the fuel tank. The first vent valve is arranged generally in the first lobe and the second vent valve is arranged in the raised portion.
    Type: Grant
    Filed: December 6, 2018
    Date of Patent: November 10, 2020
    Assignee: Eaton Intelligent Power Limited
    Inventors: Vaughn Kevin Mills, Max Franklin, Robert P. Benjey
  • Patent number: 10823119
    Abstract: The present disclosure relates to a dual purge system for a vehicle, which varies a purging amount depending on a pressure condition of an intake manifold surge tank to realize desired purging efficiency suitable for a vehicle driving range. In the dual purge system, by desorbing fuel evaporation gas from all canisters in a state of engine negative pressure, a purging amount increases thereby improving fuel efficiency, and by desorbing the fuel evaporation gas from some canisters in a state of engine positive pressure, flow resistance of the gas is reduced in comparison with previous flow resistance thereby increasing desorption efficiency.
    Type: Grant
    Filed: May 8, 2019
    Date of Patent: November 3, 2020
    Assignees: HYUNDAI MOTORS COMPANY, KIA MOTORS CORPORATION
    Inventors: Tae Kwang Eom, Soo Hong Lee, Kyu Sup Kim
  • Patent number: 10787999
    Abstract: An evaporated fuel processing apparatus is provided with a canister to collect vapor, a purge passage to purge the vapor collected in the canister to an intake passage, a purge valve provided in the purge passage to regulate a purge flow rate of the vapor, a purge pump provided between the canister and the purge valve to pressure-feed the vapor from the canister to the purge passage, and a vapor pressure sensor to detect vapor pressure in the purge passage. An inside of the canister is communicated with the atmosphere, a capacity chamber (the canister) is provided upstream of the purge pump, and the vapor pressure sensor is provided in the purge passage between the purge valve and the purge pump.
    Type: Grant
    Filed: February 12, 2019
    Date of Patent: September 29, 2020
    Assignee: AISAN KOGYO KABUSHIKI KAISHA
    Inventor: Daisaku Asanuma
  • Patent number: 10773820
    Abstract: A liquid tank system comprises a main liquid tank, an outlet communicating between a fluid circuit and the main liquid tank, an inlet communicating between the fluid circuit and the main liquid tank, and an auxiliary cavity. First vent passage and second vent passage(s) communicate between the main liquid tank and the auxiliary cavity and allows liquid and gas to flow from the main liquid tank to the auxiliary cavity. The second vent passage has a flow control device regulating flow through the second vent passage and having a set point at which it allows liquid and gas to flow from the main liquid tank to the auxiliary cavity only when a pressure in the main liquid tank is beyond a threshold.
    Type: Grant
    Filed: May 2, 2018
    Date of Patent: September 15, 2020
    Assignee: PRATT & WHITNEY CANADA CORP.
    Inventors: Sebastien Bergeron, Pierre Gauvin, Johnny Vinski, Genevieve McMurray
  • Patent number: 10774799
    Abstract: An air separator, fuel delivery system and installation set are provided. The air separator includes a vessel defining a hollow interior chamber having an inlet for receiving fuel from a fuel source and an outlet for fluidic communication with an engine. An air-bleed receives and removes a quantity of undesired gas, which is in fluidic communication with a discharge port. Further, a filter media for contact with fuel received and a conduit for delivering fuel passing through the filter media to the outlet. The air separator removes gas from the fuel prior to passage through the outlet to the engine, with the gas passing through the air-bleed. The air bleed includes a fluidic mixing alcove for passage of the gas through the discharge port. The air separator is between the transfer pump and the engine. Finally, installation sets for mounting the air separator to the fuel delivery system.
    Type: Grant
    Filed: February 11, 2016
    Date of Patent: September 15, 2020
    Assignee: CD PATENTS, LLC
    Inventor: Charles L. Ekstam
  • Patent number: 10731578
    Abstract: An evaporated fuel processing device may include a canister retaining evaporated fuel in a fuel tank, a vent passage communicating the canister and an intake passage of an engine, a first pump that discharges mixed gas of air and the evaporated fuel to the intake passage via the vent passage, a detector that detects a first pressure value indicating a pressure of the mixed gas discharged by the first pump, a memory storing pressure value-concentration correlated data indicating mixed gas, an acquisition unit that acquires a third pressure value indicating an air pressure detected by the detector in a case where the air containing substantially no evaporated fuel is discharged by the first pump, and an estimation unit that estimates a concentration of the evaporated fuel contained in the mixed gas discharged by the first pump by using the first and third pressure values and the pressure value-concentration correlated data.
    Type: Grant
    Filed: March 21, 2019
    Date of Patent: August 4, 2020
    Assignee: AISAN KOGYO KABUSHIKI KAISHA
    Inventor: Makoto Hatano
  • Patent number: 10717355
    Abstract: Methods and systems are provided for inferring a current operational state of one or more fuel tank grade vent valves. In one example, a method comprises predicting an upcoming fuel slosh event in a fuel tank positioned in a fuel system of a vehicle, and in response to such a prediction, sealing the fuel system within a threshold duration of the upcoming fuel slosh event and diagnosing a grade vent valve as a function of fuel level in the tank at the time of the fuel slosh event and a pressure monitored in the fuel system during the fuel slosh event. In this way, issues related to fuel tank overpressurization and/or release of undesired evaporative emissions to atmosphere may be reduced or avoided.
    Type: Grant
    Filed: December 19, 2018
    Date of Patent: July 21, 2020
    Assignee: Ford Global Technologies, LLC
    Inventor: Aed Dudar
  • Patent number: 10717353
    Abstract: A pressure relief valve (10, 70) is provided having a first tubing (14a) connectable to a fuel tank (62) and a second tubing (14b) connectable to a fuel vapor treating device (64), the pressure relief valve comprising: an externally actuated (hereinafter EA) valve (20) disposed between the first tubing (14a) and the second tubing (14b) and being configured for pulsed actuation by a controller (28) thereby allowing pulsed fluid flow through a primary port (18a) disposed between the first tubing (14a) and the second tubing (14b).
    Type: Grant
    Filed: January 8, 2015
    Date of Patent: July 21, 2020
    Assignee: RAVAL A.C.S. LTD.
    Inventors: Omer Vulkan, Vladimir Olshanetsky, Paul Handy, Denis Kleyman
  • Patent number: 10717354
    Abstract: A fuel tank isolation valve 10, wherein, the shaft 18 is assembled coaxially inside hole 42 of moving plunger 46 of seal sub assembly 16 and then flow limiter 22 is guided over the shaft 18 through guiding hole 34 to maintain sealing seat 36 in parallel with respect to the sealing surface 38 of rubber seal 44 and avoid misalignment of flow limiter 22 with respect to sealing surface 38 during and after the operation; the sealing seat 36 of flow limiter 22 on the sealing surface 38 of the rubber seal 44 fixed into moving plunger 46 of seal sub assembly 16 performs the over pressure relief function; the sealing surface 40 of rubber seal 44 fixed into moving plunger 46 of seal sub-assembly 16 is resting on surface 48 of nozzle body 20 to perform over vacuum relief function; and the rubber seal 44 assist both over pressure relief (OPR) and over vacuum relief (OVR) function.
    Type: Grant
    Filed: September 20, 2018
    Date of Patent: July 21, 2020
    Assignee: Padmini VNA Mechatronics Pvt. Ltd.
    Inventors: Kabir Bhandari, Amardip Kumar, Torsten Gerlich, Varun Kumar, Krishan Kant Sharma, Sahil Singla
  • Patent number: 10697399
    Abstract: A method for diagnosing a purge valve of a canister purge system includes (a) determining whether a purge valve, which is installed on a purge pipe connecting a canister with an intake system of an engine, is open and whether a purge pump is running, wherein the purge pump is configured to pump evaporative emission captured in the canister toward the intake system, and (b) determining whether the purge valve is in a close stuck state, based on upstream pressure and downstream pressure of the purge pump, when the purge valve is open while the purge pump is running.
    Type: Grant
    Filed: October 26, 2018
    Date of Patent: June 30, 2020
    Assignees: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION
    Inventor: Choo Saeng Choi
  • Patent number: 10697408
    Abstract: A vehicle gas processing device is configured to supply gas generated by a vehicle to an intake pipe of a combustion engine. The device may includes: a gas pipe configured to communicate a gas generation source to the intake pipe, the gas pipe having a flexible end at least at an intake pipe side of the gas pipe; a check valve disposed between the intake pipe and the gas pipe, and configured to allow the gas to flow from the gas pipe toward the intake pipe and prohibit the gas to flow from the intake pipe toward the gas pipe; and a determining unit configured to determine that the gas pipe is detached from the check valve. The check valve is fixed to the intake pipe, and the gas pipe is detachably attached to the check valve.
    Type: Grant
    Filed: February 20, 2017
    Date of Patent: June 30, 2020
    Assignee: AISAN KOGYO KABUSHIKI KAISHA
    Inventors: Daisaku Asanuma, Masanori Sugiura
  • Patent number: 10653994
    Abstract: The present invention discloses a fuel vapor filter for a tank ventilation device of a motor vehicle, wherein the fuel vapor filter has a filter housing with a receiving space for receiving a filter material for at least temporarily binding fuel vapors. The filter housing has a charging opening for the introduction of fuel vapors into the receiving space and a ventilation opening for the ventilation of the receiving space. The fuel vapor filter has a diverting device which is arranged in the receiving space and which serves for diverting a fluid flow between the charging opening and the ventilation opening. The diverting device is arranged in a region between the charging opening and the ventilation opening or in a region between the charging opening and a passage opening of a fluid channel fluidically connected to the ventilation opening.
    Type: Grant
    Filed: May 3, 2017
    Date of Patent: May 19, 2020
    Assignee: KAUTEX TEXTRON GMBH & CO. KG
    Inventors: Bjorn Stell, Manfred Pruser, Lars Hansonis, Volker Treudt
  • Patent number: 10625600
    Abstract: A fuel vapor suppression system in a fuel tank in a vehicle comprises a fuel storage compartment, an opening, an inlet check valve in the opening connected to a fuel filler pipe, and a vapor suppression device disposed in the fuel storage compartment and connected with the inlet check valve. The vapor suppression device may include a cylindrical mesh body having a pore size of no less than 1 mm.
    Type: Grant
    Filed: February 2, 2018
    Date of Patent: April 21, 2020
    Assignee: Ford Global Technologies LLC
    Inventor: Graham Higgin
  • Patent number: 10605206
    Abstract: A fuel vapor processing apparatus may include a canister and a valve device. The canister may include a canister case and may adsorb fuel vapor and allow desorption of fuel vapor. The valve device may include a valve housing defining a fuel vapor passage therein. A valve may be disposed within the valve housing and may control a flow of fuel vapor through the fuel vapor passage. The valve housing may be directly connected to the canister case, so that the fuel vapor passage communicates within the canister case.
    Type: Grant
    Filed: December 22, 2015
    Date of Patent: March 31, 2020
    Assignee: AISAN KOGYO KABUSHIKI KAISHA
    Inventors: Kazuki Nishiura, Shinji Murai
  • Patent number: 10598132
    Abstract: A method for diagnosis of a tank ventilation valve in a tank ventilation system for an internal combustion engine of a motor vehicle includes actuating a tank ventilation valve via a control unit, and checking the functionality of the tank ventilation valve in a manner dependent on a pressure oscillation measured by the pressure sensor. The tank ventilation system includes a filter having a first feed line from a fuel tank, a second feed line with a connection to a surrounding atmosphere, and a third feed line to a tank ventilation valve, wherein the tank ventilation valve has a connection to two different introduction points at an intake pipe, wherein the connection has a first line system and a second line system, wherein the tank ventilation system further includes at least one pressure sensor installed in the second line system between tank ventilation valve and intake pipe.
    Type: Grant
    Filed: September 14, 2017
    Date of Patent: March 24, 2020
    Assignee: DR. ING. H.C.F. PORSCHE AKTIENGESELLSCHAFT
    Inventor: Markus Timmer
  • Patent number: 10563622
    Abstract: An evaporated fuel processing device including a purge passage through which a purge gas sent from a canister to an intake passage passes, a pump sending the purge gas to the intake passage, a control valve switching between a communication state and a cutoff state, a branch passage branching from the purge passage at an upstream end and joining the purge passage at a downstream end, a pressure specifying unit comprising a small diameter portion disposed on the branch passage, and specifying a pressure difference of the purge gas passing through the small diameter portion between an upstream side and a downstream side, and an estimation unit estimating a flow rate of the purge gas sent from the pump by using an evaporated fuel concentration in the purge gas that is estimated using an air-fuel ratio and the pressure difference.
    Type: Grant
    Filed: February 2, 2017
    Date of Patent: February 18, 2020
    Assignee: AISAN KOGYO KABUSHIKI KAISHA
    Inventors: Daisaku Asanuma, Nobuhiro Kato
  • Patent number: 10533506
    Abstract: Methods and systems are provided for including a single pressure sensor in an evaporative emissions system and fuel system. In one example, a method may include venting a fuel tank of the fuel system, which is isolated from the evaporative emissions system by a fuel tank isolation valve (FTIV), in response to a depressurization condition determined based on a differential pressure measured by a delta pressure sensor coupled across the FTIV. The venting may include pulsing the FTIV open and closed and may further include adjusting the pulsing responsive to the differential pressure measured while the FTIV is closed and independent of the differential pressure measured while the FTIV is open.
    Type: Grant
    Filed: October 2, 2017
    Date of Patent: January 14, 2020
    Assignee: Ford Global Technologies, LLC
    Inventor: Aed M. Dudar
  • Patent number: 10495030
    Abstract: A method for diagnosing an evaporative emission control system that includes during a first state of a vapor blocking valve, determining a first rate of change of a fuel tank vacuum, during a second state of the vapor blocking valve different from the first state, determining a second rate of change of the fuel tank vacuum, and diagnosing an operational condition of the vapor blocking valve based on the first and second rates of change.
    Type: Grant
    Filed: June 5, 2018
    Date of Patent: December 3, 2019
    Assignee: Ford Global Technologies, LLC
    Inventors: Aed M. Dudar, Mark Peters, Donald Ignasiak, Deborah Dukatz, John Hefferon
  • Patent number: 10480430
    Abstract: An intake pipe of an evaporated fuel processing device is provided with a throttle valve downstream of a supercharger, and an ejector in parallel to the supercharger. A purge passage is branched into first and second branch passages, which connect to the intake pipe at a position downstream of the throttle valve and to a suction port of the ejector, respectively. In the ejector, its intake port is connected to the intake pipe at a position between the supercharger and the throttle valve, and its exhaust port is connected to the intake pipe at a position upstream of the supercharger. A flow rate of purge gas in the second branch passage is obtained based on at least two of a first pressure downstream of the throttle valve, a second pressure between the supercharger and the throttle valve, and a third pressure upstream of the supercharger.
    Type: Grant
    Filed: December 7, 2017
    Date of Patent: November 19, 2019
    Assignees: AISAN KOGYO KABUSHIKI KAISHA, TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Hidetoshi Tsutsumi, Tatsuhiko Akita, Yuusaku Nishimura
  • 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: 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: 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: 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: 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: 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: 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