Patents by Inventor Man Yang

Man Yang has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • SYSTEM AND METHODS FOR REGULATING FUEL VAPOR FLOW IN A FUEL VAPOR RECIRCULATION LINE
    Publication number: 20170045019
    Abstract: Methods and systems are provided for regulating the flow of fuel vapors exiting a fuel tank. In one example, a method for an engine may include adjusting an amount of fuel vapors flowing through a fuel vapor recirculation line, where the recirculation line may be coupled on a first end to a fuel tank and on an opposite second end to a fuel fill inlet. The valve may be adjusted to a more open position to increase fuel vapor flow through the recirculation line in response to increases in hydrocarbon emissions from a fuel vapor canister, and to a more closed position to reduce fuel vapor flow through the recirculation line in response to increases in hydrocarbon emissions from the fuel fill inlet.
    Type: Application
    Filed: August 12, 2015
    Publication date: February 16, 2017
    Inventors: Aed M. Dudar, Dennis Seung-Man Yang, Russell Randall Pearce
  • SYSTEMS AND METHODS FOR DETECTION AND MITIGATION OF LIQUID FUEL CARRYOVER IN AN EVAPORATIVE EMISSIONS SYSTEM
    Publication number: 20170008390
    Abstract: Methods and systems are provided for detecting and mitigating the presence of liquid fuel carryover in an evap system of a vehicle in response to a refueling event. In one example, during a first condition, a vacuum pump is activated to pressurize the fuel system responsive to a first fuel tank pressure decay rate being less than a threshold, and responsive to a second fuel tank pressure decay rate being greater than a threshold, the vacuum pump is maintained on until a fuel tank pressure decreases to atmospheric pressure. In this way, liquid fuel carryover can be quickly and accurately diagnosed, such that 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: Application
    Filed: July 9, 2015
    Publication date: January 12, 2017
    Inventors: Aed M. Dudar, Dennis Seung-Man Yang, Robert Ognjanovski, JR., Russell Randall Pearce
  • SYSTEMS AND METHODS FOR OPERATING AN EVAPORATIVE EMISSIONS SYSTEM
    Publication number: 20160377005
    Abstract: Methods and systems are provided for selectively cooling a fuel vapor canister based on vehicle operating conditions, or in response to an anticipated or requested refueling event. In one example, canister cooling elements are powered by solar cells coupled to the vehicle, thereby cooling the canister during conditions wherein bleed emissions are likely to occur. In this way, canister cooling may reduce hydrocarbon vapor bleed emissions without draining the vehicle battery, and may further provide opportunities to advantageously conduct leak tests on the evaporative emissions system.
    Type: Application
    Filed: June 23, 2015
    Publication date: December 29, 2016
    Inventors: Aed M. Dudar, Dennis Seung-Man Yang, Russell Randall Pearce
  • FUEL TANK BAFFLE WITH PIVOTABLE VANES
    Publication number: 20160368373
    Abstract: Methods and systems are provided for regulating fuel flow in a fuel tank. In one example, a method may comprise fueling a fuel tank by receiving a nozzle into a filler tube which extends into a fuel tank to fuel the fuel tank, and directing fuel through the tube against vanes in a baffle which forms a compartment within the tank. Additionally, the method may comprise enabling the vanes to open so that pressure within the compartment remains below a level which would otherwise cause shut off the nozzle during the fueling.
    Type: Application
    Filed: June 22, 2015
    Publication date: December 22, 2016
    Inventors: Aed M. Dudar, Dennis Seung-Man Yang, Rob Ognjanovski, JR.
  • Method and system for adjusting a fuel tank isolation valve
    Patent number: 9518677
    Abstract: Methods and systems are provided for adjusting and diagnosing a position of a fuel tank isolation valve (FTIV) of a fuel system. In one example, a method comprises adjusting a FTIV of a fuel system by sending an electrical pulse to the FTIV; and comparing a current draw of the FTIV to a known current draw profile to verify the position of the FTIV. In this way, the position of the FTIV may be diagnosed, thereby resulting in increased accuracy of subsequent valve control.
    Type: Grant
    Filed: September 25, 2014
    Date of Patent: December 13, 2016
    Assignee: Ford Global Technologies, LLC
    Inventors: Aed M. Dudar, Dennis Seung-Man Yang, Robert Roy Jentz, Robert Ognjanovski, Jr., Brian Thomas Aitken
  • Air intake system hydrocarbon trap purging
    Patent number: 9518540
    Abstract: Methods and systems for purging a hydrocarbon trap in an engine intake in a vehicle are disclosed. In one example approach, a method comprises during an engine off condition, operating a pump in a purge line coupled to a fuel vapor canister in an emission control system to deliver fuel stored in a hydrocarbon trap in an intake of the engine to the fuel vapor canister.
    Type: Grant
    Filed: April 30, 2013
    Date of Patent: December 13, 2016
    Assignee: Ford Global Technologies, LLC
    Inventors: Russell Randall Pearce, Aed M. Dudar, Dennis Seung-Man Yang
  • Systems and methods for operating an evaporative emissions system
    Patent number: 9512791
    Abstract: Methods and systems are provided for selectively cooling a fuel vapor canister based on vehicle operating conditions, or in response to an anticipated or requested refueling event. In one example, canister cooling elements are powered by solar cells coupled to the vehicle, thereby cooling the canister during conditions wherein bleed emissions are likely to occur. In this way, canister cooling may reduce hydrocarbon vapor bleed emissions without draining the vehicle battery, and may further provide opportunities to advantageously conduct leak tests on the evaporative emissions system.
    Type: Grant
    Filed: June 23, 2015
    Date of Patent: December 6, 2016
    Assignee: Ford Global Technologies, LLC
    Inventors: Aed M. Dudar, Dennis Seung-Man Yang, Russell Randall Pearce
  • MODULAR FUEL VAPOR CANISTER
    Publication number: 20160341156
    Abstract: Methods and systems are provided for a fuel vapor canister with a modular configuration that may include a number of physically and releasably coupled canister modules, each module including a temperature sensor embedded therein and filled with one of a number of adsorbents. The temperature sensors may be utilized in combination with information regarding module position and the adsorbents within each module to indicate whether one or more of the individual canister modules are not functioning as desired, where such indications are determined during either refueling events, or during canister purging events. In this way, costs associated with servicing fuel vapor canisters may be reduced, the lifetime of fuel vapor canisters may be improved, an overall reduction in undesired evaporative emissions may be achieved, and the capacity of the canister may be readily adjusted based on emissions standards.
    Type: Application
    Filed: May 16, 2016
    Publication date: November 24, 2016
    Inventors: Dennis Seung-Man Yang, Aed M. Dudar, Russell Randall Pearce
  • METHOD FOR DETECTING FUEL SYSTEM DEGRADATION
    Publication number: 20160341141
    Abstract: Methods and systems are provided for detecting leaks in an engine fuel system coupled in a vehicle including a first fuel tank and a second fuel tank, and a canister coupled together via a three-way valve. A leak test may be initially performed on the first fuel tank by supplying vacuum to the first fuel tank. The second fuel tank may be tested for leaks immediately following the leak test on the first fuel tank by recycling vacuum from the first fuel tank.
    Type: Application
    Filed: May 22, 2015
    Publication date: November 24, 2016
    Inventors: Aed M. Dudar, Russell Randall Pearce, Dennis Seung-Man Yang
  • SYSTEMS AND METHODS FOR REDUCING BLEED EMISSIONS
    Publication number: 20160319776
    Abstract: A method for a fuel system is provided. A vacuum is applied to a fuel vapor canister side of the fuel system, and hydrocarbon breakthrough is indicated responsive to a fuel vapor canister side pressure inflection point indicative of a decay in fuel vapor canister side vacuum. In this way, an evaporative leak check module may perform a leak check on a fuel vapor canister, while hydrocarbon breakthrough from the fuel vapor canister may be indicated without requiring a dedicated hydrocarbon sensor in the canister vent line.
    Type: Application
    Filed: April 29, 2015
    Publication date: November 3, 2016
    Inventors: Aed M. Dudar, Dennis Seung-Man Yang, Russell Randall Pearce, Mohammad R. Aghili
  • System and methods for managing fuel tank temperature
    Patent number: 9482191
    Abstract: A system for an engine, comprising: a fuel tank; a thermal regulator comprising a phase-change material, the thermal regulator coupled to the fuel tank; and an engine coolant passage positioned to transfer thermal energy between engine coolant and the phase-change material. In this way, the temperature of the fuel tank may be managed passively by the phase-change material, and actively by engine coolant, thereby allowing heat energy to be shunted away from the fuel tank, cooling the fuel within the fuel tank, and reducing fuel vapor concentration, thus enabling a fuel vapor canister with a reduced size.
    Type: Grant
    Filed: May 29, 2014
    Date of Patent: November 1, 2016
    Assignee: Ford Global Technologies, LLC
    Inventors: Dennis Seung-Man Yang, Aed M Dudar, Russell Randall Pearce, Shahid Ahmed Siddiqui
  • SYSTEMS AND METHODS FOR DEPRESSURIZING A FUEL TANK
    Publication number: 20160298579
    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: Application
    Filed: April 8, 2015
    Publication date: October 13, 2016
    Inventors: Mark W. Peters, Bryan Michael Bolger, Dennis Seung-Man Yang, Russell Randall Pearce
  • FUEL SYSTEM DIAGNOSTICS
    Publication number: 20160290286
    Abstract: Methods and systems are provided for detecting a fuel tank oil-canning event during conditions when a vacuum is applied to the fuel tank, such as during a fuel system leak test or during purging of a fuel system canister. In one example, a method may include comparing the fuel tank pressure changes during a leak test to changes in fuel tank temperature or fill level and indicating fuel tank oil-canning in response to a higher than threshold rise in fuel tank pressure during or following application of vacuum to the fuel tank while each of a fuel temperature and fill level remain unchanged. By detecting fuel tank oil-canning accurately, appropriate countermeasures can be taken.
    Type: Application
    Filed: March 30, 2015
    Publication date: October 6, 2016
    Inventors: Aed M. Dudar, Dennis Seung-Man Yang, Robert Ognjanovski, JR.
  • Methods and systems for purging vehicle fuel vapors
    Patent number: 9458802
    Abstract: Systems and methods for improving fuel vapor purging for a vehicle are presented. In one example, a fuel vapor storage canister vent valve is housed in a fuel vapor storage canister for the purposes of heating contents of the fuel vapor storage canister and venting the fuel vapor storage canister to atmosphere.
    Type: Grant
    Filed: February 27, 2014
    Date of Patent: October 4, 2016
    Assignee: Ford Global Technologies, LLC
    Inventors: Aed M. Dudar, Russell Randall Pearce, Dennis Seung-Man Yang
  • Systems and methods for an externally accessible refueling request switch
    Patent number: 9457651
    Abstract: Systems are provided for a fuel system comprising an external refueling request switch accessible at or near a refueling door, thus enabling methods that may include initiating depressurization of a fuel tank responsive to an operator engaging the refueling request switch. The status of depressurization may be communicated to the operator via on one or more LED displays located either inside the refueling assembly or located at the refueling door. In this way, refueling requests may be initiated by a refueling operator, and by relaying the status of depressurization to the operator, any confusion on the part of the operator may be avoided.
    Type: Grant
    Filed: May 26, 2015
    Date of Patent: October 4, 2016
    Assignee: Ford Global Technologies, LLC
    Inventors: Michael Paul Lindlbauer, Bryan Michael Bolger, Herbert Thomas Meissner, Roman Schesnuk, Aed M. Dudar, Dennis Seung-Man Yang, Russell Randall Pearce
  • Fuel system leak check based on fuel reid vapor pressure
    Patent number: 9458801
    Abstract: A method for an evaporative emissions leak test, comprising: adjusting a pressure threshold based on a fuel volatility of a fuel contained in a fuel tank; and performing the evaporative emissions leak test based on the adjusted pressure threshold. By determining fuel volatility and adjusting a pressure threshold based on the fuel volatility, a more robust and accurate evaporative emissions leak test may be employed without adding additional components to a fuel system.
    Type: Grant
    Filed: October 31, 2013
    Date of Patent: October 4, 2016
    Assignee: Ford Global Technologies, LLC
    Inventors: Aed M. Dudar, Dennis Seung-Man Yang, Rob Ognjanovski, Jr.
  • Fuel level inference from canister temperatures
    Patent number: 9448098
    Abstract: Methods and systems for inferring a fuel level in a fuel tank based on temperature changes in a carbon canister are disclosed. In one example approach a method comprises, indicating a fuel level in a fuel tank based on a temperature change of adsorbent in a carbon canister during refueling.
    Type: Grant
    Filed: June 5, 2013
    Date of Patent: September 20, 2016
    Assignee: Ford Global Technologies, LLC
    Inventors: Aed M. Dudar, Mark Daniel Bunge, Dennis Seung-Man Yang
  • Fuel tank depressurization before refueling a plug-in hybrid vehicle
    Patent number: 9415680
    Abstract: Methods and systems for controlling a locking mechanism on a fuel cap for refueling a vehicle are disclosed. In one example approach, a method comprises venting a fuel tank into a vapor absorbent canister in response to a request to refuel and unlocking the fuel cap in response to a predetermined temperature change in said canister.
    Type: Grant
    Filed: May 30, 2013
    Date of Patent: August 16, 2016
    Assignee: Ford Global Technologies, LLC
    Inventors: Aed M. Dudar, Dennis Seung-Man Yang, Mark Daniel Bunge
  • Method and system for detecting PHEV EVAP system recirculation tube reliability
    Patent number: 9410507
    Abstract: A method for detecting blockage within a recirculation tube of the evaporative emission control system of a PHEV measures the rise in interior temperature of a canister of the EVAP system, during the process of refueling, and notes an initial state of loading of the canister before refueling, indicative of the amount of hydrocarbons contained within the canister It is inferred that the recirculation tube is operative reliably if the rise in canister temperature is below a pre-determined temperature value.
    Type: Grant
    Filed: September 23, 2013
    Date of Patent: August 9, 2016
    Assignee: FORD GLOBAL TECHNIOLOGIES, LLC
    Inventors: Russell Randall Pearce, Dennis Seung-Man Yang, Aed M. Dudar
  • LATCHABLE VALVE AND METHOD FOR OPERATION OF THE LATCHABLE VALVE
    Publication number: 20160222924
    Abstract: A fuel system is provided, including a fuel tank isolation valve comprising an actuation coil and a latchable valve shaft at least partially disposed within the actuation coil. A controller may be configured to indicate a position of the valve shaft based on a measured current-voltage relationship between the first and second terminal wires during a condition in which the magnetic field generated by actuation coil current has a flux density below a threshold required to adjust a position of the latchable valve shaft. In this way, the position of the latchable valve shaft may be indicated without moving the valve shaft, and without requiring an dedicated valve position sensor.
    Type: Application
    Filed: May 8, 2015
    Publication date: August 4, 2016
    Inventors: Aed M. Dudar, Russell Randall Pearce, Dennis Seung-Man Yang, Robert Ognjanovski, JR., Mahmoud Yousef Ghannam