Patents by Inventor Michael Howard Shelby

Michael Howard Shelby 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: 9803570
    Abstract: Methods and systems for operating an engine during conditions where ambient humidity changes over time are presented. In one non-limiting example, an engine air flow limit is adjusted to increase engine air flow during high humidity conditions such that an engine may provide equivalent torque output during the high humidity conditions as compared to when the engine is operated during low humidity conditions.
    Type: Grant
    Filed: December 19, 2014
    Date of Patent: October 31, 2017
    Assignee: Ford Global Technologies, LLC
    Inventors: Gopichandra Surnilla, Jeffrey Allen Doering, Michael Howard Shelby, Stephen B. Smith, Mohannad Hakeem
  • Publication number: 20170306858
    Abstract: Methods and systems are provided for using compression heating to heat a cylinder piston before cylinder combustion is resumed. Cylinder heating is achieved using combinations of slow unfueled engine rotation where the engine cylinders are heated via compression stroke heating, and slow compressor rotation where the cylinders are heated via compression heating. One or more intake or exhaust heaters may be concurrently operated to expedite cylinder heating.
    Type: Application
    Filed: July 13, 2017
    Publication date: October 26, 2017
    Inventors: Joseph Norman Ulrey, John Eric Rollinger, Michael Howard Shelby, Jianwen James Yi
  • Patent number: 9759135
    Abstract: Methods and systems are provided for using compression heating to heat a cylinder piston before cylinder combustion is resumed. Cylinder heating is achieved using combinations of slow unfueled engine rotation where the engine cylinders are heated via compression stroke heating, and slow compressor rotation where the cylinders are heated via compression heating. One or more intake or exhaust heaters may be concurrently operated to expedite cylinder heating.
    Type: Grant
    Filed: April 4, 2014
    Date of Patent: September 12, 2017
    Assignee: Ford Global Technologies, LLC
    Inventors: Joseph Norman Ulrey, John Eric Rollinger, Michael Howard Shelby, Jianwen James Yi
  • Publication number: 20170248089
    Abstract: Methods and systems are provided for adjusting a throttle based on an intake oxygen sensor output. In one example, a method may include adjusting a position of a throttle based on a dilution threshold and a total aircharge dilution level, the total dilution aircharge level based on an output of an intake oxygen sensor. Additionally, spark timing may be adjusted based on the total aircharge dilution level.
    Type: Application
    Filed: May 15, 2017
    Publication date: August 31, 2017
    Inventors: Gopichandra Surnilla, Michael Howard Shelby, James Alfred Hilditch, Jason Williams
  • Publication number: 20170241355
    Abstract: Methods and systems are provided for improving engine knock tolerance, in particular when rapidly ramping in LP-EGR from low levels of EGR. Until a desired LP-EGR rate is achieved, fuel may be delivered as a split injection with at least an intake stroke injection and a compression stroke injection to compensate for the transport delay in EGR filling the intake system. Subsequently, single fuel injection may be resumed.
    Type: Application
    Filed: May 8, 2017
    Publication date: August 24, 2017
    Inventors: Steven Wooldridge, Gopichandra Surnilla, Brad Alan Boyer, James Alfred Hilditch, Michael Howard Shelby, Chris Paul Glugla, Benjamin Richard Petersen
  • Patent number: 9683497
    Abstract: Methods and systems are provided for adjusting a throttle based on an intake oxygen sensor output. In one example, a method may include adjusting a position of a throttle based on a dilution threshold and a total aircharge dilution level, the total dilution aircharge level based on an output of an intake oxygen sensor. Additionally, spark timing may be adjusted based on the total aircharge dilution level.
    Type: Grant
    Filed: October 25, 2013
    Date of Patent: June 20, 2017
    Assignee: Ford Global Technologies, LLC
    Inventors: Gopichandra Surnilla, Michael Howard Shelby, James Alfred Hilditch, Jason Williams
  • Patent number: 9664128
    Abstract: Methods and systems are provided for improving engine knock tolerance, in particular when rapidly ramping in LP-EGR from low levels of EGR. Until a desired LP-EGR rate is achieved, fuel may be delivered as a split injection with at least an intake stroke injection and a compression stroke injection to compensate for the transport delay in EGR filling the intake system. Subsequently, single fuel injection may be resumed.
    Type: Grant
    Filed: January 19, 2016
    Date of Patent: May 30, 2017
    Assignee: Ford Global Technologies, LLC
    Inventors: Steven Wooldridge, Gopichandra Surnilla, Brad Alan Boyer, James Alfred Hilditch, Michael Howard Shelby, Chris Paul Glugla, Benjamin Richard Petersen
  • Publication number: 20170138282
    Abstract: Methods and systems are provided for improving combustion stability, in particular during transient operations such as tip-out to lower load conditions, when EGR is being purged. Until a desired LP-EGR rate is achieved, fuel may be delivered as a split injection with at least an intake stroke injection and a compression stroke injection. Subsequently, single fuel injection may be resumed.
    Type: Application
    Filed: January 27, 2017
    Publication date: May 18, 2017
    Inventors: Steven Wooldridge, Gopichandra Surnilla, Jianwen James Yi, Brad Alan Boyer, James Alfred Hilditch, Michael Howard Shelby, Benjamin Richard Petersen
  • Patent number: 9611792
    Abstract: Methods and systems are provided for improving combustion stability, in particular during transient operations such as tip-out to lower load conditions, when EGR is being purged. Until a desired LP-EGR rate is achieved, fuel may be delivered as a split injection with at least an intake stroke injection and a compression stroke injection. Subsequently, single fuel injection may be resumed.
    Type: Grant
    Filed: May 10, 2016
    Date of Patent: April 4, 2017
    Assignee: Ford Global Technologies, LLC
    Inventors: Steven Wooldridge, Gopichandra Surnilla, Jianwen James Yi, Brad Alan Boyer, James Alfred Hilditch, Michael Howard Shelby, Benjamin Richard Petersen
  • Patent number: 9599046
    Abstract: Systems and methods for improving combustion in a highly exhaust gas diluted engine are disclosed. The methods and systems may be provided in an engine that includes independent control of cylinder valves with respect to other cylinder valves.
    Type: Grant
    Filed: June 5, 2014
    Date of Patent: March 21, 2017
    Assignee: Ford Global Technologies, LLC
    Inventors: Thomas G. Leone, Michael Howard Shelby, Daniel Joseph Styles, James Alfred Hilditch, Brad Alan Boyer
  • Publication number: 20170067418
    Abstract: Systems and methods for increasing EGR gas temperature for an engine that includes at least one dedicated EGR cylinder. The dedicated EGR cylinder may provide exhaust gas to engine cylinders and the exhaust gas does not include exhaust gases from cylinders other than the dedicated EGR cylinder. The dedicated EGR cylinder may allow the engine to operate at higher EGR dilution levels.
    Type: Application
    Filed: November 18, 2016
    Publication date: March 9, 2017
    Inventors: James Alfred Hilditch, Michael Howard Shelby, Michael Damian Czekala, Gregory Patrick McConville
  • Patent number: 9587596
    Abstract: Systems and methods for a twin turbocharged engine with a single exhaust gas recirculation (EGR) system are disclosed. In one example approach a system is provided comprising a first turbocharger in a first intake passage with a low-pressure EGR system fluidically coupling exhaust exiting the first turbocharger to intake air entering the first turbocharger, and a second turbocharger in a second intake passage without a low-pressure EGR system fluidically coupling exhaust exiting the second turbocharger to intake air entering the second turbocharger.
    Type: Grant
    Filed: February 13, 2012
    Date of Patent: March 7, 2017
    Assignee: Ford Global Technologies, LLC
    Inventors: Daniel Joseph Styles, James Hilditch, Michael Howard Shelby
  • Patent number: 9581114
    Abstract: Systems and methods for increasing EGR gas temperature for an engine that includes at least one dedicated EGR cylinder. The dedicated EGR cylinder may provide exhaust gas to engine cylinders and the exhaust gas does not include exhaust gases from cylinders other than the dedicated EGR cylinder. The dedicated EGR cylinder may allow the engine to operate at higher EGR dilution levels.
    Type: Grant
    Filed: July 17, 2014
    Date of Patent: February 28, 2017
    Assignee: Ford Global Technologies, LLC
    Inventors: James Alfred Hilditch, Michael Howard Shelby, Michael Damian Czekala, Gregory Patrick McConville
  • Publication number: 20170002759
    Abstract: Methods and systems are provided for estimating an impact of PCV hydrocarbons on an output of an intake oxygen sensor. In one example, a method may include disabling EGR flow when the impact of PCV hydrocarbons on the output of the intake oxygen sensor is above a threshold. The impact of the PCV hydrocarbons on the output of the intake oxygen sensor may be based on a difference between the output of the intake oxygen sensor and a DPOV sensor when EGR is flow and a difference between the output of the intake oxygen sensor and expected blow-by when EGR is not flowing.
    Type: Application
    Filed: September 13, 2016
    Publication date: January 5, 2017
    Inventors: Gopichandra Surnilla, James Alfred Hilditch, Stephen B. Smith, Michael Howard Shelby, Todd Anthony Rumpsa, Mohannad Hakeem
  • Patent number: 9528406
    Abstract: Methods and systems are provided for improving purge air-fuel ratio control. Fuel vapors from a canister and the crankcase are selectively purged to a group of cylinders and not to remaining engine cylinders. Exhaust is recirculated from the selected group of cylinders to the engine intake wherefrom the EGR is ingested in the remaining engine cylinders and the selected group of cylinders.
    Type: Grant
    Filed: May 22, 2014
    Date of Patent: December 27, 2016
    Assignee: Ford Global Technologies, LLC
    Inventors: Chris Paul Glugla, Daniel Joseph Styles, Michael Howard Shelby
  • Patent number: 9528475
    Abstract: Methods and systems are provided for engine dilution control via direct injection of water from a reservoir. In one example, a method may include during select conditions, direct injecting fluid from a reservoir into an EGR cooler. This approach can be used to supplement EGR flow during situations that decrease EGR flow.
    Type: Grant
    Filed: November 11, 2014
    Date of Patent: December 27, 2016
    Assignee: Ford Global Technologies, LLC
    Inventors: Daniel Joseph Styles, Michael Howard Shelby, James Alfred Hilditch, Michael Damian Czekala, Joseph Norman Ulrey
  • Publication number: 20160356236
    Abstract: Methods and systems are described for controlling fuel injection in an engine equipped with a dual injector system including a port injector and a direct injector. A ratio of port injected fuel to direct injected fuel is adjusted based at least on intake valve temperature. The proportion of fuel port injected into a cylinder is increased as the intake valve temperature for the given cylinder increases to improve fuel vaporization in the intake port.
    Type: Application
    Filed: August 16, 2016
    Publication date: December 8, 2016
    Inventors: Gopichandra Surnilla, Eric Krengel, Joseph Lyle Thomas, Todd Anthony Rumpsa, Michael Howard Shelby
  • Patent number: 9482189
    Abstract: Methods and systems are provided for adjusting a reference voltage for an intake manifold oxygen sensor based on ingestion of hydrocarbons from a fuel system canister and/or an engine crankcase. During conditions when purge or crankcase ventilation hydrocarbons are ingested in the intake aircharge, the intake oxygen sensor is transitioned from operating at a lower reference voltage to a higher reference voltage where the effects of the ingested hydrocarbons on the sensor output are nullified. An EGR dilution of the intake aircharge is estimated based on the output of the sensor at the higher reference voltage while an amount of hydrocarbons ingested is estimated based on a difference between sensor outputs at the higher and lower reference voltages.
    Type: Grant
    Filed: September 19, 2013
    Date of Patent: November 1, 2016
    Assignee: Ford Global Technologies, LLC
    Inventors: Gopichandra Surnilla, Daniel A. Makled, James Alfred Hilditch, Richard E. Soltis, Michael Howard Shelby, Daniel Joseph Styles
  • Patent number: 9441564
    Abstract: Methods and systems are provided for estimating an impact of PCV hydrocarbons on an output of an intake oxygen sensor. In one example, a method may include disabling EGR flow when the impact of PCV hydrocarbons on the output of the intake oxygen sensor is above a threshold. The impact of the PCV hydrocarbons on the output of the intake oxygen sensor may be based on a difference between the output of the intake oxygen sensor and a DPOV sensor when EGR is flow and a difference between the output of the intake oxygen sensor and expected blow-by when EGR is not flowing.
    Type: Grant
    Filed: April 14, 2014
    Date of Patent: September 13, 2016
    Assignee: Ford Global Technologies, LLC
    Inventors: Gopichandra Surnilla, James Alfred Hilditch, Stephen B. Smith, Michael Howard Shelby, Todd Anthony Rumpsa, Mohannad Hakeem
  • Patent number: 9435287
    Abstract: Methods and systems are described for controlling fuel injection in an engine equipped with a dual injector system including a port injector and a direct injector. A ratio of port injected fuel to direct injected fuel is adjusted based at least on intake valve temperature. The proportion of fuel port injected into a cylinder is increased as the intake valve temperature for the given cylinder increases to improve fuel vaporization in the intake port.
    Type: Grant
    Filed: February 25, 2014
    Date of Patent: September 6, 2016
    Assignee: Ford Global Technologies, LLC
    Inventors: Gopichandra Surnilla, Eric Krengel, Joseph Lyle Thomas, Todd Anthony Rumpsa, Michael Howard Shelby