Patents by Inventor Ross Dykstra Pursifull

Ross Dykstra Pursifull 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).

  • Patent number: 10428751
    Abstract: Systems and methods for operating an engine that includes one or more fuel injectors are described. The systems and methods may characterize fuel injector operation during a time when injecting fuel may be useful to maintain balance of a catalyst to reduce engine emissions. Further, large or small amounts of fuel may be injected without affecting engine combustion.
    Type: Grant
    Filed: April 20, 2017
    Date of Patent: October 1, 2019
    Assignee: Ford Global Technologies, LLC
    Inventors: Michael James Uhrich, Joseph Norman Ulrey, Ross Dykstra Pursifull
  • Publication number: 20190293010
    Abstract: Methods and systems are provided for determining a dilution of recirculated gases, including blowthrough air, combusted exhaust gas, and fuel vapor, in a split exhaust engine. In one example, the dilution rate may be calculated using a steady state model based on temperature measurements from an intake region of the engine. The steady state model may be further used in combination with a feedforward model adapted to estimate engine dilution during engine transients as a correction factor.
    Type: Application
    Filed: March 20, 2018
    Publication date: September 26, 2019
    Inventors: Daniel Madison, Joseph Ulrey, Gopichandra Surnilla, Mohannad Hakeem, Ross Dykstra Pursifull
  • Publication number: 20190285016
    Abstract: Methods and systems are provided for compression heating of air. In one example, a method may include, during an engine start and prior to a first combustion event, deactivating cylinder exhaust valves while spinning the engine electrically and unfueled until a threshold intake air temperature is reached, and alternately activating and deactivating the exhaust valves of one or more cylinders to maintain the intake air temperature above the threshold temperature after the first combustion event. In this way, a temperature of an air charge may be increased, resulting in increased fuel economy and decreased vehicle emissions.
    Type: Application
    Filed: March 15, 2018
    Publication date: September 19, 2019
    Inventors: Gopichandra Surnilla, Ross Dykstra Pursifull
  • Patent number: 10393036
    Abstract: Systems and methods for increasing engine vacuum production and catalyst heating of a hybrid powertrain are described. In one example, a motor/generator rotates an engine at idle speed while the engine combusts air and fuel without providing torque sufficient to rotate the engine so that spark timing may be advanced or retarded from minimum spark timing for best torque to heat a catalyst and generate vacuum for vacuum consumers.
    Type: Grant
    Filed: July 26, 2016
    Date of Patent: August 27, 2019
    Assignee: Ford Global Technologies, LLC
    Inventors: Ross Dykstra Pursifull, Ralph Wayne Cunningham
  • Patent number: 10393070
    Abstract: Methods and systems are provided for fueling an engine with liquefied petroleum gas (LPG). In one example, a method may comprise pumping (LPG) from a fuel tank to a direct injection rail and not to a port injection rail. The method may further comprise supplying LPG from the direct injection rail to a port injection rail without returning the LPG to the fuel tank.
    Type: Grant
    Filed: April 18, 2017
    Date of Patent: August 27, 2019
    Assignee: Ford Global Technologies, LLC
    Inventors: Joseph Norman Ulrey, Ross Dykstra Pursifull
  • Patent number: 10393056
    Abstract: Methods and systems are provided for calibrating engine port injectors. After pressurizing a low pressure fuel rail, a lift pump may be disabled and port injector variability may be correlated with a measured fuel rail pressure drop at each port injection event by sweeping injection pressure while maintaining injection voltage, and then sweeping injection voltage while maintaining injection pressure. A port injector variability map learned as a function of injection voltage and injection pressure is then transformed into a map learned as a function of injection current and injection pressure by accounting for injector variability caused due to changes in injector temperature.
    Type: Grant
    Filed: May 10, 2017
    Date of Patent: August 27, 2019
    Assignee: Ford Global Technologies, LLC
    Inventors: Ross Dykstra Pursifull, Adithya Pravarun Re Ranga, Gopichandra Surnilla
  • Publication number: 20190255913
    Abstract: A cabin heating system includes an exhaust heat exchanger having a cabin air conduit. That cabin air conduit includes a check valve, a pressure relief valve and a heat exchange section between the check valve and the pressure relief valve. The cabin heating system also includes a control module configured to maintain cabin air in the cabin air conduit at a first pressure P1 while exhaust gas in an exhaust bypass has a second pressure P2 where P1>P2.
    Type: Application
    Filed: February 19, 2018
    Publication date: August 22, 2019
    Inventors: Joseph Norman Ulrey, Gopichandra Surnilla, Ross Dykstra Pursifull, Thomas George Leone
  • Publication number: 20190255912
    Abstract: A cabin heating system includes a cabin air heat exchanger, an exhaust gas heat exchanger and a heat transfer loop. The heat transfer loop circulates a gaseous heat exchange fluid between the cabin air heat exchanger and the exhaust gas heat exchanger.
    Type: Application
    Filed: February 19, 2018
    Publication date: August 22, 2019
    Inventors: Joseph Norman Ulrey, Gopichandra Surnilla, Ross Dykstra Pursifull, Thomas George Leone
  • Publication number: 20190249639
    Abstract: Methods and systems are provided for improving the operating range of an electric vehicle having an engine wherein waste heat generated during motor operation is transferred to pre-heat the engine. Engine starting is predicted based on the electrical torque demand of the vehicle relative to the actual and predicted electrical energy consumption of the electric vehicle. Prior to starting the engine to charge a battery of the motor, various engine components are pre-heated in an order that improves vehicle range while also optimizing fuel economy.
    Type: Application
    Filed: February 13, 2018
    Publication date: August 15, 2019
    Inventors: Kenneth Miller, Ross Dykstra Pursifull, Thomas Leone, Gopichandra Surnilla
  • Patent number: 10378400
    Abstract: Methods and systems are provided for adjusting engine compression ratio (CR) and spark timing to attain particulate filter (PF) regeneration temperature. In one example, a method may include, in response to PF load reaching a threshold and PF temperature being lower than the PF regeneration temperature, lowering the CR and then selectively adjusting spark timing based on an estimated residual gas fraction (RGF) at the lower CR.
    Type: Grant
    Filed: July 18, 2017
    Date of Patent: August 13, 2019
    Assignee: Ford Global Technologies, LLC
    Inventors: Michael James Uhrich, Joseph Norman Ulrey, Ross Dykstra Pursifull, Christopher Paul Glugla, Emil G. Serban
  • Patent number: 10377205
    Abstract: Methods and systems are provided for controlling an air conditioning compressor clutch. In one example, a method includes monitoring a clutch of an air conditioning system in a vehicle when the air conditioning system is activated, and responsive to determining that the clutch is not engaged, increasing a current flow to the clutch. In this way, engagement of the compressor clutch may be dynamically maintained with a reduced usage of electrical power.
    Type: Grant
    Filed: July 16, 2015
    Date of Patent: August 13, 2019
    Assignee: Ford Global Technologies, LLC
    Inventor: Ross Dykstra Pursifull
  • Patent number: 10375764
    Abstract: Method and apparatus are disclosed for determining and controlling a vehicle load current and temperature through the use of a common current sensor. An example vehicle includes a power source, an electrical sensor configured to detect a total current provided by the power source to a plurality of electrical loads, and a processor. The a processor is configured to determine a target load temperature based on the total current, and set a voltage duty cycle of the target load to maintain the target load temperature.
    Type: Grant
    Filed: October 4, 2017
    Date of Patent: August 6, 2019
    Assignee: Ford Global Technologies, LLC
    Inventors: Joseph Norman Ulrey, Michael James Uhrich, Ross Dykstra Pursifull
  • Publication number: 20190234367
    Abstract: Methods and systems are provided for an exhaust catalyst heating strategy that uses spark retard to increase an amount of heat output by an engine without a combustion stability limit. In one example, a method may include, during an engine cold start, applying an ignition spark at a timing that produces substantially zero combustion torque while maintaining an engine speed greater than a threshold speed via electric motor torque. Furthermore, an amount of heat output by the engine may be controlled by adjusting an airflow through the engine, such as by adjusting one or more of a throttle position and the engine speed.
    Type: Application
    Filed: February 1, 2018
    Publication date: August 1, 2019
    Inventors: Ross Dykstra Pursifull, Joseph Ulrey
  • Publication number: 20190217844
    Abstract: A hybrid electric vehicle (HEV) that includes one or more controller(s) configured to manage electric only and combustion engine drive modes, and at start-up, to generate a trip distance, and to detect an electric drive range, and battery, cabin, and powertrain thermal demands, among other conditions. The controller(s) engage a combustion engine drive mode if the distance exceeds the range, and the thermal demands exceed respective thresholds. The controller(s) also engage an electric drive mode if the range exceeds the distance, and the threshold exceed the thermal demands. Further variations include the controller(s) responsive to receiving a destination, and communicating the destination to a navigation system, and detecting if a charge event is likely to occur at the destination. In other arrangements, the controller(s) also adjust the trip distance upon detecting an historical probability of a charge event at the destination and whether the destination is a final destination.
    Type: Application
    Filed: January 12, 2018
    Publication date: July 18, 2019
    Inventors: Ross Dykstra Pursifull, Thomas G. Leone
  • Patent number: 10347058
    Abstract: Methods, apparatus, systems and articles of manufacture are disclosed for vehicle maintenance event detection and recording. An example apparatus includes a maintenance event detector to detect a first maintenance event including at least one of a tire rotation event or a fluid change event, a parameter recorder to store in a service log a vehicle location, a time, and a vehicle travel distance at which the first maintenance event occurred, and a distance targeter to determine a target distance for a second maintenance event based on information stored in the service log.
    Type: Grant
    Filed: November 27, 2017
    Date of Patent: July 9, 2019
    Assignee: Ford Global Technologies, LLC
    Inventors: Ross Dykstra Pursifull, Michael James Uhrich, Dilip B. Patel
  • Publication number: 20190187026
    Abstract: Methods and apparatus for assessing tire health are disclosed. An example apparatus includes a vehicle speed sensor, and a processor. The processor of the of the example apparatus to obtain load data for a wheel of a vehicle, obtain speed data for the vehicle, determine a power associated with heating a tire coupled to the wheel based on the load data and the speed data, and determining a condition of the tire based on the power.
    Type: Application
    Filed: December 19, 2017
    Publication date: June 20, 2019
    Inventors: Michael James Uhrich, Ross Dykstra Pursifull
  • Patent number: 10322725
    Abstract: Methods and systems are provided for adjusting powertrain torque in a vehicle based on driver intent. Driver intent is inferred based on foot motion inside a foot well monitored via a foot well region sensor and changes in clearance outside the vehicle monitored via a range sensor. By adjusting powertrain torque based on operator foot motion and traffic movements outside the vehicle, frequency of lash transitions can be reduced and lash transition initiation can be adjusted based on expected changes in torque demand.
    Type: Grant
    Filed: July 14, 2016
    Date of Patent: June 18, 2019
    Assignee: Ford Global Technologies, LLC
    Inventors: Ralph Wayne Cunningham, Ross Dykstra Pursifull
  • Publication number: 20190170050
    Abstract: Methods and systems are provided for controlling exhaust flow and recovering heat from exhaust gas under different operating conditions. In one example, motive flow of fresh air via an ejector coupled to an exhaust bypass assembly may be utilized to divert exhaust through a heat exchanger during cold-start conditions and heat extracted from the exhaust gas may be utilized for passenger cabin heating and other vehicle heating demands. The exhaust bypass assembly may also be used for EGR delivery wherein the exhaust heat exchanger may be used as an EGR cooler.
    Type: Application
    Filed: February 5, 2019
    Publication date: June 6, 2019
    Inventors: Michael James Uhrich, Joseph Norman Ulrey, Ross Dykstra Pursifull
  • Publication number: 20190161083
    Abstract: A method for improving operation of a vehicle that includes an engine, a transmission, and a torque converter clutch is disclosed. In one example, the method assesses whether or not driver braking is expected and adjusts driveline braking accordingly. The method freewheels the driveline to extend vehicle coasting when driver braking is not expected and the method increases or decreases driveline braking based on a closing distance between the vehicle and an object in the vehicle's path.
    Type: Application
    Filed: January 28, 2019
    Publication date: May 30, 2019
    Inventors: Ralph Wayne Cunningham, Ross Dykstra Pursifull
  • Publication number: 20190164360
    Abstract: Methods, apparatus, systems and articles of manufacture are disclosed for vehicle maintenance event detection and recording. An example apparatus includes a maintenance event detector to detect a first maintenance event including at least one of a tire rotation event or a fluid change event, a parameter recorder to store in a service log a vehicle location, a time, and a vehicle travel distance at which the first maintenance event occurred, and a distance targeter to determine a target distance for a second maintenance event based on information stored in the service log.
    Type: Application
    Filed: November 27, 2017
    Publication date: May 30, 2019
    Inventors: Ross Dykstra Pursifull, Michael James Uhrich, Dilip B. Patel