Patents by Inventor Eric L. Schroeder

Eric L. Schroeder 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: 10746089
    Abstract: An internal combustion engine having an exhaust log structure onto which a plurality of turbochargers is connected, each turbocharger having a turbine connected to the exhaust log structure and having an inlet fluidly connectable to a respective one of the plurality of outlet ports, an exhaust valve disposed at a turbine outlet such that the flow of exhaust gas out of the turbine is fluidly blocked, and an actuator associated with the exhaust valve and operating to move the exhaust valve from a closed position to an open position and vice versa. An electronic controller provides a command to the actuator to move the exhaust valve between the open and closed positions and is programmed to selectively open two one or more exhaust valves based on an operating condition of the engine.
    Type: Grant
    Filed: January 25, 2018
    Date of Patent: August 18, 2020
    Assignee: Caterpillar Inc.
    Inventors: Jeremy Byrd, Eric L. Schroeder, Liangtao Zhu, Arvind Sivasubramanian, Ryan T. Sunley, Craig P. Hittle, Aaron L. Robinson
  • Patent number: 10544767
    Abstract: A fuel injector assembly is disclosed. The fuel injector assembly may include a case that encloses a solenoid assembly. The fuel injector assembly may include one or more inlet passages, positioned on the case, to permit fluid to enter the case to cool the solenoid assembly. The fuel injector assembly may include one or more outlet passages, positioned on the case, to permit fluid to exit the case. The fuel injector assembly may include an annular protrusion positioned around a circumference of the case between the one or more inlet passages and the one or more outlet passages.
    Type: Grant
    Filed: April 16, 2018
    Date of Patent: January 28, 2020
    Assignee: Caterpillar Inc.
    Inventors: Eric L. Schroeder, Craig P. Hittle
  • Publication number: 20190353117
    Abstract: A cylinder liner is disclosed. The cylinder liner may include a generally cylindrical body having a top end and a bottom end. The cylinder liner may include a flange connected to the generally cylindrical body at the top end of the generally cylindrical body. The flange may have an annular surface. A first diameter of a top portion of the annular surface may be less than a second diameter of a bottom portion of the annular surface.
    Type: Application
    Filed: May 18, 2018
    Publication date: November 21, 2019
    Applicant: Caterpillar Inc.
    Inventors: Eric L. Schroeder, Craig P. Hittle, Shu Zhang, Nathan Bjerk, Andrew Schick
  • Publication number: 20190316557
    Abstract: A fuel injector assembly is disclosed. The fuel injector assembly may include a case that encloses a solenoid assembly. The fuel injector assembly may include one or more inlet passages, positioned on the case, to permit fluid to enter the case to cool the solenoid assembly. The fuel injector assembly may include one or more outlet passages, positioned on the case, to permit fluid to exit the case. The fuel injector assembly may include an annular protrusion positioned around a circumference of the case between the one or more inlet passages and the one or more outlet passages.
    Type: Application
    Filed: April 16, 2018
    Publication date: October 17, 2019
    Applicant: Caterpillar Inc.
    Inventors: Eric L. Schroeder, Craig P. Hittle
  • Patent number: 10378408
    Abstract: Described herein are illustrative exhaust systems and methods including ammonia generation and storage. An illustrative system can include a first exhaust conduit to and receive a first exhaust stream from a first engine, and a second exhaust conduit to and receive a second exhaust stream from a second engine. In the illustrative example, an exhaust treatment device coupled to the second exhaust conduit downstream of the second engine can convert nitrogen oxides (NOx) in the second exhaust stream into ammonia. An ammonia storage device coupled to the second exhaust conduit downstream of the exhaust treatment device can be configured to receive and store at least a portion of the converted ammonia as stored ammonia and to release at least a portion of the stored ammonia to a catalytic converter. The catalytic converter can include a selective catalytic reduction catalyst configured to use the ammonia to reduce NOx.
    Type: Grant
    Filed: March 26, 2018
    Date of Patent: August 13, 2019
    Assignee: Caterpillar Inc.
    Inventors: James J. Driscoll, Eric L. Schroeder
  • Publication number: 20190226389
    Abstract: An internal combustion engine having an exhaust log structure onto which a plurality of turbochargers is connected, each turbocharger having a turbine connected to the exhaust log structure and having an inlet fluidly connectable to a respective one of the plurality of outlet ports, an exhaust valve disposed at a turbine outlet such that the flow of exhaust gas out of the turbine is fluidly blocked, and an actuator associated with the exhaust valve and operating to move the exhaust valve from a closed position to an open position and vice versa. An electronic controller provides a command to the actuator to move the exhaust valve between the open and closed positions and is programmed to selectively open two one or more exhaust valves based on an operating condition of the engine.
    Type: Application
    Filed: January 25, 2018
    Publication date: July 25, 2019
    Applicant: Caterpillar Inc.
    Inventors: Jeremy Byrd, Eric L. Schroeder, Liangtao Zhu, Arvind Sivasubramanian, Ryan T. Sunley, Craig P. Hittle, Aaron L. Robinson
  • Publication number: 20190178149
    Abstract: A supercharger system for an engine having a turbocharger is provided. The supercharger system includes a supercharger driver and an air inlet. The supercharger system also includes a supercharger compressor mechanically coupled to the supercharger driver. The supercharger compressor includes a supercharger compressor inlet and a supercharger compressor outlet. The supercharger compressor inlet is in fluid communication with the air inlet. The supercharger compressor outlet is in fluid communication with a turbine inlet associated with the turbocharger.
    Type: Application
    Filed: December 12, 2017
    Publication date: June 13, 2019
    Applicant: Caterpillar Inc.
    Inventors: Eric L. Schroeder, Ryan T. Sunley
  • Patent number: 10247052
    Abstract: A guide assembly for a valve lifter of an engine. The valve lifter is at least partly received within a bore of a body of the engine and an end portion of the valve lifter is exposed to an outside of the body. The guide assembly includes a pin and a guide. The pin is adapted to be fixedly coupled to the end portion of the valve lifter, while the guide is adapted to be coupled to the body. The guide defines a channel. The pin is received within the channel and cooperates with the channel to facilitate a movement of the valve lifter along an axis of the bore and to restrict a rotation of the valve lifter about the axis of the bore.
    Type: Grant
    Filed: July 31, 2017
    Date of Patent: April 2, 2019
    Assignee: Caterpillar Inc.
    Inventors: Craig P. Hittle, Eric L. Schroeder
  • Publication number: 20190032520
    Abstract: A guide assembly for a valve lifter of an engine is disclosed. The valve lifter is at least partly received within a bore of a body of the engine and an end portion of the valve lifter is exposed to an outside of the body. The guide assembly includes a pin and a guide. The pin is adapted to be fixedly coupled to the end portion of the valve lifter, while the guide is adapted to be coupled to the body. The guide defines a channel. The pin is received within the channel and cooperates with the channel to facilitate a movement of the valve lifter along an axis of the bore and restrict a rotation of the valve lifter about the axis of the bore.
    Type: Application
    Filed: July 31, 2017
    Publication date: January 31, 2019
    Applicant: Caterpillar Inc.
    Inventors: Craig P. Hittle, Eric L. Schroeder
  • Publication number: 20150165377
    Abstract: An exhaust system includes an catalytic oxidation device, an particulate trap, a mixer, and a selective reduction catalyst (SCR), an adapter, and a sensor. The SCR is disposed downstream of a mixing tube and reduces oxides of nitrogen in the exhaust gas stream. The oxides of nitrogen are reduced in presence of ammonia on the SCR. The exhaust system also includes an adapter with an inlet and outlet pipe. A sensor is disposed downstream of the SCR, between the inlet and outlet pipe. The sensor is configured to measure an amount of oxides of nitrogen in the exhaust gas stream. Further an ammonia oxidation (AMOX) catalyst is disposed, in the adapter, upstream of the sensor for oxidizing the residual ammonia that may slip through the SCR before the exhaust gas stream reaches the sensor.
    Type: Application
    Filed: December 12, 2013
    Publication date: June 18, 2015
    Applicant: Caterpillar Inc.
    Inventors: Eric L. Schroeder, Sylvain J. Charbonnel