Patents by Inventor Gopichandra Surnilla

Gopichandra Surnilla 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: 11067016
    Abstract: Methods and systems are provided for tracking a fuel puddle mass in the intake port of a deactivated engine cylinder. The difference in fuel evaporation rate in the deactivated cylinder intake is accounted for by applying distinct time constant and gain values to a transient fuel compensation model. A fuel vapor content is clipped once the intake vapor pressure in the intake port of the deactivated cylinder reaches a saturation pressure limit.
    Type: Grant
    Filed: April 13, 2020
    Date of Patent: July 20, 2021
    Assignee: Ford Global Technologies, LLC
    Inventors: Adithya Pravarun Re Ranga, Amey Karnik, Pravin Sashidharan, Gopichandra Surnilla, Michael Howard Shelby, Eric Storhok
  • Patent number: 11047357
    Abstract: Systems and methods for providing spark to an engine are described. In one example, engine knock limited spark timing is expressed as a straight line that is determined in response to engine knock, spark timing, and engine load. The method and system described herein may be performed without extensive engine calibration and mapping.
    Type: Grant
    Filed: September 26, 2013
    Date of Patent: June 29, 2021
    Assignee: Ford Global Technologies, LLC
    Inventors: Thomas G. Leone, Gopichandra Surnilla
  • Patent number: 10989126
    Abstract: Systems and methods for operating an internal combustion engine that includes an oxygen sensor are described. In one example, a voltage that is applied to a heating element of an oxygen sensor is integrated to determine a resistance of the heating element. The resistance of the heating element is the basis for adjusting voltage applied to the heating element during subsequent engine starts.
    Type: Grant
    Filed: February 13, 2019
    Date of Patent: April 27, 2021
    Assignee: Ford Global Technologies, LLC
    Inventors: Gopichandra Surnilla, Hao Zhang, Christopher Paul Glugla, Jacobus Hendrik Visser, Richard E. Soltis
  • Patent number: 10968853
    Abstract: Methods and systems are provided for learning fuel injector error for cylinder groups during a deceleration fuel shut-off (DFSO), where all cylinders of an engine are deactivated, sequentially firing each cylinder of a cylinder group, each cylinder fueled via consecutive first and second fuel pulses of differing fuel pulse width from an injector. Based on a lambda deviation between the first and second pulses, a fuel error for the injector and an air-fuel ratio imbalance for each cylinder is learned. Alternatively or additionally, a difference in crankshaft acceleration between the first and second pulses relative to the expected deviation may be used to learn torque error, and adjust fuel injector error and air-ratio imbalance for each cylinder.
    Type: Grant
    Filed: May 22, 2019
    Date of Patent: April 6, 2021
    Assignee: Ford Global Technologies, LLC
    Inventors: Gopichandra Surnilla, Imad Hassan Makki, Adithya Pravarun Re Ranga, Hassene Jammoussi, Robert Roy Jentz, Michael Igor Kluzner, Stephen B. Smith
  • Publication number: 20210095609
    Abstract: Systems and methods are provided for controlling deceleration fuel shut off (DFSO) in response to an external object or location, such as a target vehicle. In one example, a method may include, while operating an engine in DFSO, determining a rate of change of a range to the target vehicle, and commanding an exit from the DFSO based on the range rate of change. By exiting the DFSO based on the range rate of change, torque lash experienced by a driver may be correspondingly reduced as compared to exiting the DFSO based upon, for example, one or more powertrain operating conditions.
    Type: Application
    Filed: September 27, 2019
    Publication date: April 1, 2021
    Inventors: Daniel A. Makled, Michael McQuillen, Matthew Affeldt, Gopichandra Surnilla
  • Patent number: 10960873
    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: Grant
    Filed: February 13, 2018
    Date of Patent: March 30, 2021
    Assignee: Ford Global Technologies, LLC
    Inventors: Kenneth Miller, Thomas Leone, Gopichandra Surnilla
  • Patent number: 10953864
    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: Grant
    Filed: February 13, 2018
    Date of Patent: March 23, 2021
    Assignee: Ford Global Technologies, LLC
    Inventors: Kenneth Miller, Gopichandra Surnilla
  • Patent number: 10953725
    Abstract: Methods and system for providing heat to a vehicle are presented. In one example, a refrigerant loop is operated to heat a passenger cabin via heat generated by a compressor and heat generated by a resistive heating element. The heat that is generated by the compressor and the heat that is generated by the resistive heating element is transferred to a refrigerant before it is transferred to the passenger cabin.
    Type: Grant
    Filed: September 14, 2018
    Date of Patent: March 23, 2021
    Assignee: Ford Global Technologies, LLC
    Inventors: Debasish Dhar, Gopichandra Surnilla, Ross Pursifull, Brad Alan VanDerWege
  • Patent number: 10954867
    Abstract: Methods and systems are provided for controlling operating of a split exhaust engine system including a scavenge exhaust gas recirculation system based on a composition of constituents within a total flow through the scavenge exhaust gas recirculation system. In one example, a method may include adjusting an engine operating parameter in response to individual flows of each of burnt gases, fresh air, and fuel to an intake passage, upstream of a compressor, from a scavenge manifold coupled to scavenge exhaust valves, the individual flows of each of the burnt gases, fresh air, and fuel determined based on a valve opening overlap between the scavenge exhaust valves and intake valves of the engine.
    Type: Grant
    Filed: June 7, 2019
    Date of Patent: March 23, 2021
    Assignee: Ford Global Technologies, LLC
    Inventors: Mohannad Hakeem, Ashley Wiese, Daniel Madison, Joseph Norman Ulrey, Gopichandra Surnilla
  • Patent number: 10947932
    Abstract: Methods and systems are provided for adjusting operation of a split exhaust engine system based on a total flow of gases through a scavenge exhaust gas recirculation system of the split exhaust engine system. In one example, a method may include setting a cam timing correction based on a difference between a first value and a second value of a flow through an exhaust gas recirculation (EGR) passage, the first value determined based on a first parameter set including a cylinder valve overlap area and the second value determined based on a second parameter set not including the cylinder valve overlap area, and operating at least one of an intake cam and an exhaust cam at a corrected timing using the cam timing correction. In this way, the flow through the EGR passage may be adjusted even without active control of a valve coupled in the EGR passage.
    Type: Grant
    Filed: June 24, 2019
    Date of Patent: March 16, 2021
    Assignee: Ford Global Technologies, LLC
    Inventors: Mohannad Hakeem, Timothy Joseph Clark, Gopichandra Surnilla, Daniel Paul Madison
  • Patent number: 10935462
    Abstract: Methods and systems are provided for estimating an actual compression ratio of an engine cylinder based on the electric current applied to an actuator of the associated variable compression ratio mechanism. The compression ratio is estimated as a function of both a value and a location, relative to cylinder piston position, of a peak holding current applied by an electric motor on the actuator to maintain the actuator at a commanded compression ratio setting. In this way, the vehicle control system may more accurately infer the current actual compression ratio of each cylinder.
    Type: Grant
    Filed: April 26, 2018
    Date of Patent: March 2, 2021
    Assignee: Ford Global Technologies, LLC
    Inventors: Christopher Paul Glugla, Gopichandra Surnilla, Imtiaz Ali, Lyth Alobiedat
  • Patent number: 10919495
    Abstract: A system includes a processor configured to generate a new access key, responsive to a vehicle shutdown. The processor is also configured to connect to a previously identified user wireless device. The processor is further configured to deliver the new access key to the user wireless device, responsive to connection to the wireless device and locally store a copy of the new access key in a file designated for reference for a next-access attempt.
    Type: Grant
    Filed: June 24, 2019
    Date of Patent: February 16, 2021
    Assignee: Ford Global Technologies, LLC
    Inventors: Alex Szczepaniak, Michael McQuillen, Gopichandra Surnilla, Radhakrishnan Swaminathan
  • Patent number: 10914229
    Abstract: Embodiments for controlling condensate in a charge air cooler are provided. In one example, a charge air cooler comprises an inlet to admit charge air, a plurality of heat exchange passages to remove heat from the charge air, an outlet configured to discharge the charge air from the heat exchange passages to an intake passage upstream of an intake manifold of an engine, and a dispersion element extending at least partially across the outlet.
    Type: Grant
    Filed: September 14, 2012
    Date of Patent: February 9, 2021
    Assignee: Ford Global Technologies, LLC
    Inventors: William Charles Ruona, Gopichandra Surnilla, David Karl Bidner
  • Patent number: 10883433
    Abstract: Methods and systems are provided for a battery supplying power to an exhaust oxygen sensor heater. In one example, a method may include estimating a power delivered to the heater during heating of the sensor and in response to a power delivered from a battery being lower than a threshold, adjusting a battery charging strategy prior to an immediately subsequent engine start.
    Type: Grant
    Filed: December 18, 2018
    Date of Patent: January 5, 2021
    Assignee: Ford Global Technologies, LLC
    Inventors: Christopher Paul Glugla, Kenneth Ellison, Hao Zhang, John Roth, Gopichandra Surnilla, John Virga, Richard E. Soltis
  • Publication number: 20200400106
    Abstract: Methods and systems are provided for adjusting operation of a split exhaust engine system based on a total flow of gases through a scavenge exhaust gas recirculation system of the split exhaust engine system. In one example, a method may include setting a cam timing correction based on a difference between a first value and a second value of a flow through an exhaust gas recirculation (EGR) passage, the first value determined based on a first parameter set including a cylinder valve overlap area and the second value determined based on a second parameter set not including the cylinder valve overlap area, and operating at least one of an intake cam and an exhaust cam at a corrected timing using the cam timing correction. In this way, the flow through the EGR passage may be adjusted even without active control of a valve coupled in the EGR passage.
    Type: Application
    Filed: June 24, 2019
    Publication date: December 24, 2020
    Inventors: Mohannad Hakeem, Timothy Joseph Clark, Gopichandra Surnilla, Daniel Paul Madison
  • Patent number: 10871118
    Abstract: Methods and systems are provided for an oxygen sensor heater. In one example, a method may include applying a less than maximum duty cycle of voltage to the oxygen sensor heater during an engine cold start (e.g., when a temperature of the oxygen sensor is less than its light-off temperature) and adjusting the applied duty cycle of voltage to maintain a constant amount of power. In this way, the oxygen sensor may be heated at a constant rate even as a resistance of the oxygen sensor heater increases, decreasing an amount of time before the oxygen sensor reaches its light-off temperature.
    Type: Grant
    Filed: November 13, 2017
    Date of Patent: December 22, 2020
    Assignee: Ford Global Technologies, LLC
    Inventors: Gopichandra Surnilla, Hao Zhang, Richard E. Soltis, William Russell Goodwin, Robert F. Novak, David Bilby, Evangelos P. Skoures
  • Publication number: 20200394919
    Abstract: Systems and methods for connected vehicle and mobile device communications are provided herein. An example method includes determining a distracted condition for at least one of a driver or a pedestrian by evaluating actions occurring within in a vehicle of the driver or on a mobile device of the pedestrian; determining a distraction level for either the driver or the pedestrian based on the actions occurring within in the vehicle or on the mobile device; and providing an alert message to the mobile device or a human machine interface of the vehicle based on the distraction level, the alert message warning of a distracted condition of the pedestrian or the driver.
    Type: Application
    Filed: June 11, 2019
    Publication date: December 17, 2020
    Applicant: Ford Global Technologies, LLC
    Inventors: Syed Amaar Ahmad, Ivan Vukovic, John Walpuck, Jayanthi Rao, Gopichandra Surnilla, Jovan Zagajac
  • Patent number: 10865724
    Abstract: Methods and systems are provided for characterizing aged fuel, which loses volatility over time. In one example, a method may include estimating a fuel vapor pressure during an engine cold start using a pre-determined fuel distillation curve and adjusting one or more combustion parameters based on the estimated fuel vapor pressure. Because the fuel vapor pressure directly relates to the fuel volatility, adjusting the one or more combustion parameters based on the estimated fuel vapor pressure may reduce aged fuel-related engine performance degradation, such as hesitation and emissions during cold start.
    Type: Grant
    Filed: January 22, 2018
    Date of Patent: December 15, 2020
    Assignee: Ford Global Technologies, LLC
    Inventors: Christopher Woodring, Gopichandra Surnilla, Mohannad Hakeem, Chris Glugla
  • Publication number: 20200386141
    Abstract: Methods and systems are provided for adjusting operation of a split exhaust engine system based on a total flow of gases through a scavenge exhaust gas recirculation system of the split exhaust engine system. In one example, a method may include adjusting engine operation in response to a flow of gases to an intake passage, upstream of a compressor, from a scavenge manifold coupled to scavenge exhaust valves, the flow of gases determined based on a valve opening overlap between the scavenge exhaust valves and intake valves of an engine, the scavenge exhaust valves opened at a different time than blowdown exhaust valves coupled to a blowdown manifold coupled to a turbine.
    Type: Application
    Filed: June 7, 2019
    Publication date: December 10, 2020
    Inventors: Mohannad Hakeem, Timothy Clark, Daniel Madison, Gopichandra Surnilla, Ashley Wiese, Joseph Norman Ulrey
  • Publication number: 20200386127
    Abstract: Methods and systems are provided for controlling operating of a split exhaust engine system including a scavenge exhaust gas recirculation system based on a composition of constituents within a total flow through the scavenge exhaust gas recirculation system. In one example, a method may include adjusting an engine operating parameter in response to individual flows of each of burnt gases, fresh air, and fuel to an intake passage, upstream of a compressor, from a scavenge manifold coupled to scavenge exhaust valves, the individual flows of each of the burnt gases, fresh air, and fuel determined based on a valve opening overlap between the scavenge exhaust valves and intake valves of the engine.
    Type: Application
    Filed: June 7, 2019
    Publication date: December 10, 2020
    Inventors: Mohannad Hakeem, Ashley Wiese, Daniel Madison, Joseph Norman Ulrey, Gopichandra Surnilla