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).

  • Systems and methods for preventing fuel tank overfilling
    Patent number: 9809441
    Abstract: Methods and systems are provided for enabling a vehicle operator to select a desired amount of fuel to add to a fuel tank, and wherein overfilling of the tank is prevented by pressurizing the fuel system with an onboard pump. In one example, the tank may be sealed to induce an automatic shutoff of a refueling dispenser if the fuel level is below the capacity of the tank, and in another example, wherein it is indicated that the tank is full, the fuel system may be pressurized via the pump to induce automatic shutoff of the refueling dispenser and to prevent further overfilling of the tank. In this way, vehicle operators may add desired amounts of fuel to the tank wherein shutoff of the refueling dispenser is automatic, and wherein liquid fuel entering an evaporative emissions control system as a result of overfilling a fuel tank is prevented.
    Type: Grant
    Filed: December 21, 2015
    Date of Patent: November 7, 2017
    Assignee: Ford Global Technologies, LLC
    Inventors: Aed M. Dudar, Dennis Seung-Man Yang, Sheven Sharp, Russell Randall Pearce, Donald Ignasiak, Bryan Michael Bolger
  • Fuel tank depressurization before refueling a plug-in hybrid vehicle
    Patent number: 9802478
    Abstract: A method for operating a vehicle system is provided. The method includes monitoring a change in a temperature of the fuel vapor canister coupled to a fuel tank via a canister temperature sensor and adjusting operation of a fuel tank isolation valve based on the change in temperature of the fuel vapor canister.
    Type: Grant
    Filed: April 21, 2015
    Date of Patent: October 31, 2017
    Assignee: Ford Global Technologies, LLC
    Inventors: Dennis Seung-Man Yang, Aed M. Dudar, Russell Randall Pearce
  • System and methods for diagnosing premature refueling shutoff
    Patent number: 9797809
    Abstract: A method for localizing restrictions in a fuel system during refueling, comprising: monitoring fuel tank pressure, fuel vapor canister temperature, and evaporative leak check module pressure during a refueling event; and responsive to a premature shutoff event, indicating a location of a restriction among a plurality of locations based on whether monitored pressure and temperature changes during the refueling event are greater than respective thresholds. In this way, the cause of a premature shutoff event may be diagnosed without requiring additional sensors within the fuel system.
    Type: Grant
    Filed: November 19, 2013
    Date of Patent: October 24, 2017
    Assignee: Ford Global Technologies, LLC
    Inventors: Aed M. Dudar, Russell Randall Pearce, Scott A. Bohr, Dennis Seung-Man Yang
  • Latchable valve and method for operation of the latchable valve
    Patent number: 9777678
    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 a dedicated valve position sensor.
    Type: Grant
    Filed: May 8, 2015
    Date of Patent: October 3, 2017
    Assignee: Ford Global Technologies, LLC
    Inventors: Aed M. Dudar, Russell Randall Pearce, Dennis Seung-Man Yang, Robert Ognjanovski, Jr., Mahmoud Yousef Ghannam
  • Methods and systems for diagnosing fuel tank oil-canning
    Patent number: 9771899
    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: Grant
    Filed: March 30, 2015
    Date of Patent: September 26, 2017
    Assignee: Ford Global Technologies, LLC
    Inventors: Aed M. Dudar, Dennis Seung-Man Yang, Robert Ognjanovski, Jr.
  • SYSTEMS AND METHODS FOR FUEL VAPOR CANISTER PURGE
    Publication number: 20170260918
    Abstract: Methods and systems are provided for controlling the purging of a fuel vapor canister coupled to a vehicle fuel tank, configured for capturing and storing vapors emanating from the tank. In one example, two canister purge valves are coupled in series in a fuel vapor conduit between the fuel vapor canister and engine intake, one at the intake manifold and one at the fuel vapor canister, such that fine control over the introduction of fuel vapors into the engine is maintained via the purge valve at the intake manifold, while thorough purging of the fuel vapor canister may be regulated via the purge valve at the fuel vapor canister. In this way, fuel vapors in the fuel vapor canister may be effectively purged to intake, thus reducing the potential for undesired evaporative emissions.
    Type: Application
    Filed: March 9, 2016
    Publication date: September 14, 2017
    Inventors: Aed M. Dudar, Donald Ignasiak, Dennis Seung-Man Yang, Russell Randall Pearce, Mark W. Peters, Niels Christopher Kragh
  • SYSTEMS AND METHODS FOR REDUCING VEHICLE EVAPORATIVE EMISSIONS
    Publication number: 20170260914
    Abstract: Methods and systems are provided for managing fuel vapor in a vehicle evaporative emissions system configured with a fuel vapor canister for capturing and storing vapors from a vehicle fuel tank. In one example, a three-way valve is positioned between the fuel vapor canister and atmosphere, and may function during engine-off conditions to direct fuel tank vapors through the fuel vapor canister where they may be adsorbed, and then to an intake manifold of the engine where a second adsorbent for capturing and storing fuel vapors is positioned. In this way, fuel vapors that are not adsorbed by the fuel vapor canister, or fuel vapors that are freed from the canister during engine-off conditions may be routed to the second adsorbent prior to exiting to atmosphere, thus reducing undesired bleed emissions.
    Type: Application
    Filed: March 14, 2016
    Publication date: September 14, 2017
    Inventors: Aed M. Dudar, Dennis Seung-Man Yang
  • Identification film and pattern including photonic crystals and anticounterfeiting product including the same
    Patent number: 9753197
    Abstract: An identification film and pattern having high transparency and a reflectance spectrum with respect to a particular wavelength and including photonic crystals patterned into a particular shape and an anticounterfeiting product including the same are disclosed. A highly transparent colloidal photonic crystal film is easily manufactured using photocurable colloidal suspensions. Even though a plurality of patterns (including sub-patterns) is formed in plural films, there is no reduction in optical characteristics such as transparency, reflectance spectra, and the like. Thus, a film patterned into a desired shape is manufactured and thus usability thereof is enhanced, and a plurality of reflectance spectra with various wavelength ranges is provided and thus identification capability or security is enhanced.
    Type: Grant
    Filed: July 11, 2014
    Date of Patent: September 5, 2017
    Assignee: KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Shin Hyun Kim, Seung Man Yang, Hye Soo Lee, Tae Soup Shim
  • Systems and methods for inferring fuel vapor canister loading rate
    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
  • System and methods for regulating fuel vapor flow in a fuel vapor recirculation line
    Patent number: 9732706
    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: Grant
    Filed: August 12, 2015
    Date of Patent: August 15, 2017
    Assignee: Ford Global Technologies, LLC
    Inventors: Aed M. Dudar, Dennis Seung-Man Yang, Russell Randall Pearce
  • Systems and methods for depressurizing a fuel tank
    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
  • SYSTEMS AND METHODS FOR PREVENTING FUEL TANK OVERFILLING
    Publication number: 20170174501
    Abstract: Methods and systems are provided for enabling a vehicle operator to select a desired amount of fuel to add to a fuel tank, and wherein overfilling of the tank is prevented by pressurizing the fuel system with an onboard pump. In one example, the tank may be sealed to induce an automatic shutoff of a refueling dispenser if the fuel level is below the capacity of the tank, and in another example, wherein it is indicated that the tank is full, the fuel system may be pressurized via the pump to induce automatic shutoff of the refueling dispenser and to prevent further overfilling of the tank. In this way, vehicle operators may add desired amounts of fuel to the tank wherein shutoff of the refueling dispenser is automatic, and wherein liquid fuel entering an evaporative emissions control system as a result of overfilling a fuel tank is prevented.
    Type: Application
    Filed: December 21, 2015
    Publication date: June 22, 2017
    Inventors: Aed M. Dudar, Dennis Seung-Man Yang, Sheven Sharp, Russell Randall Pearce, Donald Ignasiak, Bryan Michael Bolger
  • Canister purge valve system
    Patent number: 9683525
    Abstract: Systems and methods are described for a canister purge valve. A method comprises rotating an armature within a valve body in the canister purge valve as the canister purge valve opens and closes during a purge operation. The armature is encircled at a first end by an elastomer seal with multiple angled wings that enable rotation of the armature about a central longitudinal axis during the purge operation.
    Type: Grant
    Filed: September 11, 2014
    Date of Patent: June 20, 2017
    Assignee: Ford Global Technologies, LLC
    Inventors: Keith Scott Koller, Kevin William Plymale, Dennis Seung-Man Yang, Michael Wene
  • Systems and methods for reducing bleed emissions
    Patent number: 9677512
    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: Grant
    Filed: April 29, 2015
    Date of Patent: June 13, 2017
    Assignee: Ford Global Technologies, LLC
    Inventors: Aed M. Dudar, Dennis Seung-Man Yang, Russell Randall Pearce, Mohammad R. Aghili
  • Systems and methods for determining the integrity of a vehicle fuel system
    Patent number: 9669705
    Abstract: A method, comprising: indicating leakage on a canister side of a fuel system based on a first fuel system pressure following applying a vacuum to the fuel system with a fuel tank isolation valve closed; and indicating leakage on a fuel tank side of the fuel system based on the first fuel system pressure and a second fuel system pressure following applying a vacuum to the fuel system with the fuel tank isolation valve open. In this way, an ELCM with a single reference orifice may be used to perform a leak test with two different thresholds for leak detection. This may allow vehicles currently in production to meet future emissions standards without costly upgrades to the ELCM.
    Type: Grant
    Filed: January 14, 2014
    Date of Patent: June 6, 2017
    Assignee: Ford Global Technologies, LLC
    Inventors: Russell Randall Pearce, Mark W. Peters, Aed M. Dudar, Dennis Seung-Man Yang
  • Systems and methods for determining the integrity of a vehicle fuel system
    Patent number: 9664145
    Abstract: A method, comprising: indicating a leak of a first diameter on a canister side of a fuel system following applying a vacuum to the fuel system with a fuel tank isolation valve closed; and indicating a leak of a second diameter on a fuel tank side of the fuel system, based on a vacuum decay in an isolated fuel tank following applying a vacuum to the fuel system with the fuel tank isolation valve open. In this way, an evaporative leak check module with a single reference orifice may be used to determine leaks of multiple sizes in multiple sectors of a fuel system. This may allow current production models to meet more stringent emissions regulations in the future.
    Type: Grant
    Filed: January 14, 2014
    Date of Patent: May 30, 2017
    Assignee: Ford Global Technologies, LLC
    Inventors: Aed M. Dudar, Dennis Seung-Man Yang, Russell Randall Pearce
  • SYSTEMS AND METHODS FOR FUEL TANK PRESSURE CONTROL
    Publication number: 20170114733
    Abstract: A method is presented wherein during a first condition that includes a fuel tank pressure above a threshold, a fuel tank is fluidically coupled to a fuel vapor canister while a fuel vapor canister vent path is restricted, and a degree of restriction of the fuel vapor canister vent path is modulated. Modulating the degree of restriction of the fuel vapor canister vent path allows a fuel tank to be depressurized at a controlled rate. In this way, excess fuel tank pressure can be relieved, even if a vehicle engine is not operating in a combustion mode.
    Type: Application
    Filed: October 22, 2015
    Publication date: April 27, 2017
    Inventors: Mohammad R. Aghili, Aed M. Dudar, Dennis Seung-Man Yang
  • Fuel vapor canister purge using reversible vacuum pump
    Patent number: 9611817
    Abstract: A method for a fuel system, comprising: during a first condition, purging fuel vapor from a fuel vapor canister to a fuel vapor accumulator; and then during a second condition, evacuating fuel vapor from the fuel vapor accumulator to a fuel tank. The fuel vapor accumulator increases the volume of the fuel system, providing a temporary storage for desorbed fuel vapor. In this way, canister breakthrough of hydrocarbons can be mitigated, thereby reducing bleed emissions.
    Type: Grant
    Filed: August 21, 2014
    Date of Patent: April 4, 2017
    Assignee: Ford Global Technologies, LLC
    Inventors: Aed M. Dudar, Dennis Seung-Man Yang, Russell Randall Pearce
  • COVER WINDOW OF FLEXIBLE DISPLAY DEVICE AND FLEXIBLE DISPLAY DEVICE HAVING THE SAME
    Publication number: 20170064845
    Abstract: A cover window of a flexible display device includes a base substrate including an out-folding area, an in-folding area, and peripheral areas disposed on opposing sides of at least one of the out-folding area and the in-folding area, a first hard coating layer at a top surface of the base substrate, the first hard coating layer having a substantially uniform thickness, and a second hard coating layer at a bottom surface of the base substrate opposite to the top surface, the second hard coating layer having a thickness different from the thickness of the first hard coating layer. A thickness of a first area of the second hard coating layer that overlaps with the out-folding area and the in-folding area of the base substrate is less than a thickness of a second area of the second hard coating layer that overlaps with the peripheral areas of the base substrate.
    Type: Application
    Filed: June 13, 2016
    Publication date: March 2, 2017
    Inventors: Jae-Hoon JUNG, Jong-Whan CHO, Suk-Man YANG, Young-Sik YOON, Jong-In LEE
  • SYSTEMS AND METHODS FOR A LATCHABLE REFUELING VALVE
    Publication number: 20170050512
    Abstract: Methods and systems are provided for a latchable refueling valve designed to reduce noise associated with opening and closing the valve. In one example, a system may include a valve armature with first and second latch indices formed on an outer diameter of the armature. The latch indices may be rounded and configured to engage with a latch guide to enable rotation between the armature and the latch guide.
    Type: Application
    Filed: August 19, 2015
    Publication date: February 23, 2017
    Inventors: Robert Ognjanovski, JR., Dennis Seung-Man Yang, Kevin Lucka, Russell Randall Pearce