Patents by Inventor Thomas Michael Lavertu

Thomas Michael Lavertu 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: 10294846
    Abstract: A system includes one or more processors configured to be operably coupled to a vehicle system configured to travel along a route during a trip. The vehicle system has a vehicle particulate filter (VPF) disposed within an exhaust passage of the vehicle system. The one or more processors are configured to determine, based on trip information about the trip of the vehicle system, one or more regeneration-incompatible (RI) portions of the trip. The RI portions are associated with operating conditions of the vehicle system that are unsuitable for contemporaneous active regeneration of the VPF. The one or more processors are further configured to schedule an active regeneration (AR) event for the vehicle system based on the one or more RI portions of the trip. The AR event occurs during a regeneration portion of the trip.
    Type: Grant
    Filed: August 7, 2017
    Date of Patent: May 21, 2019
    Assignee: GE GLOBAL SOURCING LLC
    Inventors: Daniel George Norton, Thomas Michael Lavertu, Roy James Primus
  • Publication number: 20190106132
    Abstract: A control system includes a communication device onboard a vehicle system approaching or entering an airflow restricted area along a route and one or more processors. The communication device configured to receive status messages that contain data parameters representative of ambient conditions within the airflow restricted area. The processors are configured to monitor the ambient conditions and determine different power output upper limits that a trail propulsion vehicle of the vehicle system can generate within the airflow restricted area based on the ambient conditions and different power outputs generated by a lead propulsion vehicle of the vehicle system. The processors further configured to communicate instructions to control the lead propulsion vehicle within the airflow restricted area to generate the power output of the different power outputs that results in the greatest total available power output of the vehicle system as the vehicle system travels within the airflow restricted area.
    Type: Application
    Filed: December 6, 2018
    Publication date: April 11, 2019
    Inventors: Thomas Michael Lavertu, Roy James Primus, Jennifer Lynn Jackson
  • Patent number: 10190509
    Abstract: A method includes receiving a plurality of signals from a plurality of sensors coupled to a dual fuel engine. The method further includes altering an actual speed of the dual fuel engine to obtain a predetermined air-fuel ratio in response to a changed operating condition of the dual fuel engine determined based on the plurality of signals, so as to maintain operation of the dual fuel engine between knock and misfire conditions.
    Type: Grant
    Filed: December 23, 2013
    Date of Patent: January 29, 2019
    Assignee: GE Global Sourcing LLC
    Inventors: Thomas Michael Lavertu, Roy James Primus, Adam Edgar Klingbeil, James Robert Mischler
  • Patent number: 10183683
    Abstract: A control system includes a communication device onboard a vehicle system approaching or entering an airflow restricted area along a route and one or more processors. The communication device configured to receive status messages that contain data parameters representative of ambient conditions within the airflow restricted area. The processors are configured to monitor the ambient conditions and determine different power output upper limits that a trail propulsion vehicle of the vehicle system can generate within the airflow restricted area based on the ambient conditions and different power outputs generated by a lead propulsion vehicle of the vehicle system. The processors further configured to communicate instructions to control the lead propulsion vehicle within the airflow restricted area to generate the power output of the different power outputs that results in the greatest total available power output of the vehicle system as the vehicle system travels within the airflow restricted area.
    Type: Grant
    Filed: January 3, 2017
    Date of Patent: January 22, 2019
    Assignee: General Electric Company
    Inventors: Thomas Michael Lavertu, Roy James Primus, Jennifer Lynn Jackson
  • Patent number: 10119460
    Abstract: A system includes an engine coupled with a primary shaft that drives a first electric generator for generating electrical power via a gear subsystem. The system also includes a turbocharger assembly having at least one gas turbine engine configured for driving the primary shaft and coupled in parallel with the engine. The turbocharger assembly includes multiple compressors configured to provide a flow of compressed fluid into both the engine and the at least one gas turbine engine and multiple turbines configured to utilize exhausts from both the engine and the one gas turbine for driving the primary shaft. Further, the system includes a controller configured to operate a plurality of valves for controlling optimal intake fluid pressure into the engine and the turbocharger assembly and fuel injections into the engine and the at least one gas turbine engine.
    Type: Grant
    Filed: September 18, 2014
    Date of Patent: November 6, 2018
    Assignee: GENERAL ELECTRIC COMPANY
    Inventors: Roy James Primus, Adam Edgar Klingbeil, Narendra Digamber Joshi, Omowoleola Chukwuemeka Akinyemi, Thomas Michael Lavertu
  • Patent number: 10094324
    Abstract: A method of operating an internal combustion engine is provided. The method includes combusting a mixture of fresh air and fuel within multiple cylinders. The method also includes directing a first portion of exhaust gases into a first-stage turbine and a second-stage turbine of a turbocharger for expanding the exhaust gases, directing a second portion of exhaust gases from the exhaust manifold via an exhaust channel bypassing the first-stage turbine and recirculating a third portion of exhaust gases into an intake manifold after mixing with fresh air. The method includes controlling at least one of: reducing a normal engine speed at each engine power setting while maintaining constant engine power level by increasing a fuel injection per cycle; concurrently increasing a flow rate of the third portion of exhaust gas during recirculation; and advancing a fuel injection timing for reducing emission levels that meets Tier 4 requirements.
    Type: Grant
    Filed: May 30, 2013
    Date of Patent: October 9, 2018
    Assignee: GENERAL ELECTRIC COMPANY
    Inventors: Thomas Michael Lavertu, Adam Edgar Klingbeil, Roy James Primus, Omowoleola Chukwuemeka Akinyemi, Venu Gopal Gummadavelli, Barry Allen Record, James Henry Yager
  • Patent number: 10046766
    Abstract: A traction loss warning system includes a warning controller configured to be disposed onboard a first vehicle and to determine a location on a route where a loss in traction of the first vehicle occurred and a vehicle controller configured to be disposed onboard a second vehicle, the vehicle controller configured to control movement of the second vehicle along the route. The warning controller also is configured to communicate a warning signal that notifies the second vehicle of the location where the loss in traction of the first vehicle occurred. The vehicle controller is configured to change the movement of second vehicle along the route during travel of the second vehicle over the location responsive to receiving the warning signal from the warning controller.
    Type: Grant
    Filed: June 21, 2016
    Date of Patent: August 14, 2018
    Assignee: General Electric Company
    Inventors: Thomas Michael Lavertu, Jennifer Lynn Jackson
  • Patent number: 10018130
    Abstract: Fuel injector wear compensation methodologies for use with internal combustion engines that alter the injection schedule over the life of the fuel injector(s) by using methods that conduct a primary injection of fuel in the engine (primary fuel event), per an injection schedule within an engine cycle; compare a measured engine parameter(s) to a reference value(s); and then alter the injection schedule applied to the engine, based on the comparing. Another method comprises: during injection events, inject a first fuel in a combustion chamber of the engine; measure an engine parameter(s) of the engine during operation; compare the engine parameter(s) to a reference value(s); add a post injection event of a second fuel during the injection events, based on the comparison. The methods can be applied with single or dual fuels.
    Type: Grant
    Filed: March 31, 2016
    Date of Patent: July 10, 2018
    Assignee: GENERAL ELECTRIC COMPANY
    Inventors: Thomas Michael Lavertu, Adam Edgar Klingbeil, Roy James Primus
  • Publication number: 20180186390
    Abstract: A control system includes a communication device onboard a vehicle system approaching or entering an airflow restricted area along a route and one or more processors. The communication device configured to receive status messages that contain data parameters representative of ambient conditions within the airflow restricted area. The processors are configured to monitor the ambient conditions and determine different power output upper limits that a trail propulsion vehicle of the vehicle system can generate within the airflow restricted area based on the ambient conditions and different power outputs generated by a lead propulsion vehicle of the vehicle system. The processors further configured to communicate instructions to control the lead propulsion vehicle within the airflow restricted area to generate the power output of the different power outputs that results in the greatest total available power output of the vehicle system as the vehicle system travels within the airflow restricted area.
    Type: Application
    Filed: January 3, 2017
    Publication date: July 5, 2018
    Inventors: Thomas Michael Lavertu, Roy James Primus, Jennifer Lynn Jackson
  • Publication number: 20180179952
    Abstract: A turbine engine includes a rotating detonation combustor including a housing defining at least one combustion chamber. The rotating detonation combustor is configured for a rotating detonation process to occur within the at least one combustion chamber to generate a combustion flow including a first portion and a second portion. The turbine engine also includes a turbine coupled in flow communication with the rotating detonation combustor. The turbine is configured to receive the combustion flow from the rotating detonation combustor. The turbine includes a first blade and a second blade that rotate about an axis at a rotational frequency. The rotating detonation combustor and the turbine are configured for the combustion flow first portion to contact the first blade substantially continuously as the first blade rotates.
    Type: Application
    Filed: December 23, 2016
    Publication date: June 28, 2018
    Inventors: Andrew Maxwell Peter, Peter Daniel Silkowski, Thomas Michael Lavertu, Venkat Eswarlu Tangirala, Douglas Carl Hofer
  • Publication number: 20180179950
    Abstract: A turbine engine assembly including a plurality of rotating detonation combustors configured for a rotating detonation process to occur to produce a flow of combustion gas. The plurality of rotating detonation combustors are oriented such that the flow of combustion gas discharged therefrom flows helically relative to a centerline of the turbine engine assembly. The assembly also includes a turbine coupled downstream from the plurality of rotating detonation combustors. The turbine is configured to receive the flow of combustion gas.
    Type: Application
    Filed: December 23, 2016
    Publication date: June 28, 2018
    Inventors: Andrew Maxwell Peter, Peter Daniel Silkowski, Thomas Michael Lavertu, Venkat Eswarlu Tangirala, Douglas Carl Hofer
  • Publication number: 20180179961
    Abstract: A turbine engine assembly including a rotating detonation combustor configured to combust a fuel-air mixture formed at least partially from a primary fuel including methane. The assembly also includes a fuel reformer configured to produce a secondary fuel, wherein the fuel reformer is further configured to channel a flow of secondary fuel towards the rotating detonation combustor such that the fuel-air mixture further includes the secondary fuel.
    Type: Application
    Filed: December 23, 2016
    Publication date: June 28, 2018
    Inventors: Thomas Michael Lavertu, Jr., Kapil Kumar Singh, Venkat Eswarlu Tangirala, Michael John Bowman, Joel Meier Haynes, Anthony John Dean
  • Publication number: 20180180289
    Abstract: A turbine engine assembly including a rotating detonation combustor configured to combust a fuel-air mixture. The rotating detonation combustor includes a radially inner side wall, a radially outer side wall extending about the radially inner side wall such that an annular combustion chamber is at least partially defined therebetween, and a cooling conduit extending along at least one of the radially inner side wall or the radially outer side wall. The assembly also includes a first compressor configured to discharge a flow of cooling air towards the rotating detonation combustor, and to channel the flow of cooling air through the cooling conduit.
    Type: Application
    Filed: December 23, 2016
    Publication date: June 28, 2018
    Inventors: Thomas Michael Lavertu, Jr., Andrew Maxwell Peter, Venkat Eswarlu Tangirala, James Albert Tallman, Anthony John Dean
  • Patent number: 9964056
    Abstract: A method includes controlling an engine speed based on: intake manifold air temperature and/or intake manifold pressure one, or more, of the following data parameters: an engine load as a function of a fuel level, a fuel injecting timing, an intake oxygen concentration, a constituent concentration from the exhaust gas flow, an engine power, and an engine torque. The method also recirculates a portion of the exhaust gas flow to the combustion cylinders of the engine via a recirculation channel, as a function of intake manifold temperature and/or intake manifold pressure at which the engine is operated. An engine system, other methods, and a non-transitory computer readable medium encoded with a program, to enable a processor-based control unit to control aspects of the engine are also disclosed.
    Type: Grant
    Filed: September 18, 2015
    Date of Patent: May 8, 2018
    Assignee: GENERAL ELECTRIC COMPANY
    Inventors: Roy James Primus, Omowoleola Chukwuemeka Akinyemi, Thomas Michael Lavertu, James Robert Mischler, Venu Gummadavelli Gupta
  • Patent number: 9915186
    Abstract: An engine having an after-treatment system for reducing emissions from an exhaust stream includes an intake manifold and a plurality of cylinders coupled to the intake manifold. The plurality of cylinders includes a first set of cylinders and a second set of cylinders. Further, the engine includes a first exhaust manifold coupled to the first set of cylinders and a second exhaust manifold coupled to the second set of cylinders. The engine further includes an after-treatment system coupled to the first exhaust manifold. The first exhaust manifold further includes an end portion disposed downstream relative to the after-treatment system. The end portion of the first exhaust manifold is coupled to a first portion of the second exhaust manifold via a pipe.
    Type: Grant
    Filed: April 9, 2014
    Date of Patent: March 13, 2018
    Assignee: GENERAL ELECTRIC COMPANY
    Inventor: Thomas Michael Lavertu
  • Publication number: 20180058310
    Abstract: Various systems and methods are provided for controlling operation of a turbocharger compressor. In one example, a system includes a turbocharger including a turbine positioned in an exhaust passage and a compressor positioned in an intake passage, an engine bypass passage having an inlet fluidically coupled to an outlet of the compressor and an outlet fluidically coupled to an inlet of the turbine, an engine bypass valve to control flow through the engine bypass passage, and a controller configured to adjust a position of the engine bypass valve to maintain compressor operation within a designated compressor efficiency region.
    Type: Application
    Filed: August 24, 2016
    Publication date: March 1, 2018
    Inventors: James Robert MISCHLER, Thomas Michael LAVERTU, Jared Davis VAUGHN, Alok KUMAR, Richard James SCOTT
  • Publication number: 20180058296
    Abstract: A system includes one or more processors configured to be operably coupled to a vehicle system configured to travel along a route during a trip. The vehicle system has a vehicle particulate filter (VPF) disposed within an exhaust passage of the vehicle system. The one or more processors are configured to determine, based on trip information about the trip of the vehicle system, one or more regeneration-incompatible (RI) portions of the trip. The RI portions are associated with operating conditions of the vehicle system that are unsuitable for contemporaneous active regeneration of the VPF. The one or more processors are further configured to schedule an active regeneration (AR) event for the vehicle system based on the one or more RI portions of the trip. The AR event occurs during a regeneration portion of the trip.
    Type: Application
    Filed: August 7, 2017
    Publication date: March 1, 2018
    Inventors: Daniel George Norton, Thomas Michael Lavertu, Roy James Primus
  • Patent number: 9903284
    Abstract: Dual-fuel engine system includes cylinders in which the cylinders have an intake valve and an exhaust valve that control a flow of fluid into and out of a combustion chamber of the corresponding cylinder. The intake valve is configured to have an intake valve closure (IVC) timing. The dual-fuel engine system is configured to operate in a single-fuel mode and a dual-fuel mode. The combustion chamber and a piston are designed to provide a compression ratio. The dual-fuel engine system also includes one or more processors that are operably coupled to and configured to control operation of the first fuel injector. The compression ratio and the IVC timing are selected to achieve a target pre-combustion temperature. The target pre-combustion temperature permits the dual-fuel engine system to operate at a high substitution rate in the dual-fuel mode and at a sufficient fuel efficiency in the single-fuel mode.
    Type: Grant
    Filed: October 31, 2016
    Date of Patent: February 27, 2018
    Assignee: General Electric Company
    Inventors: Thomas Michael Lavertu, Roy James Primus, Venu Gummadavelli Gupta, Sebastian Walter Freund, Omowoleola Chukwuemeka Akinyemi, Adam Edgar Klingbeil, Victor Manuel Salazar
  • Patent number: 9868089
    Abstract: A controller for controlling emission of an internal combustion engine, that is configured to: determine an aging parameter(s) of the engine over a period of time; control an operating parameter(s) of the engine, based on the aging parameter(s); and then maintain emissions from the engine at a substantially constant value, based on the controlling. Also method of controlling emissions of an engine comprises: over a time period, determining a change in operating hours of the engine; emissions of the engine; and/or quantity of a fuel being dispensed by a fuel nozzle; controlling an operating parameter(s) of the engine during the time period, based on the determining, thereby maintaining the emissions of the engine substantially at a constant level during the same time period. A system and non-transitory computer readable media for controlling emissions of an engine are also disclosed.
    Type: Grant
    Filed: December 13, 2016
    Date of Patent: January 16, 2018
    Assignee: General Electric Company
    Inventors: Thomas Michael Lavertu, Venu Gummadavelli Gupta, Shishir Tiwari
  • Patent number: 9863342
    Abstract: Various methods and systems are provided for adjusting an air-fuel ratio for combustion in an engine. In one embodiment, a method for an engine (e.g., a method for controlling an engine system) comprises responding to a sensed change in a load on the engine, or indications of engine knock or misfire, by one or more of: altering a speed of the engine, adjusting a fueling flow rate into at least one cylinder of the engine, and adjusting a position of a valve in a bypass passage configured to direct compressed intake air away from cylinders of the engine to obtain a determined air-fuel ratio; and thereby maintaining an air-fuel ratio in a determined range.
    Type: Grant
    Filed: September 25, 2015
    Date of Patent: January 9, 2018
    Assignee: General Electric Company
    Inventors: Chetan Sharadchandra Tulapurkar, Manoj Gokhale, Roy James Primus, Leslie Orin Trask, James Robert Mischler, Adam Edgar Klingbeil, Thomas Michael Lavertu