Patents by Inventor Aaron S. Ness

Aaron S. Ness 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).

  • LOW COMPRESSION NATURAL GAS ENGINE PISTON BOWL FOR IMPROVED COMBUSTION STABILITY
    Publication number: 20240093659
    Abstract: A piston may have an annular body including a crown portion defining a longitudinal axis, a radial direction perpendicular to the longitudinal axis, a plane containing the longitudinal axis and the radial direction, and a contoured combustion bowl. In the plane containing the longitudinal axis and the radial direction, the crown portion includes a radially outer squish surface, and a swirl pocket having a reentrant surface that extends axially downwardly and radially outwardly from the squish surface defining a tangent that forms a reentrant angle with the squish surface that ranges from 53.0 degrees to 57.0 degrees.
    Type: Application
    Filed: November 16, 2023
    Publication date: March 21, 2024
    Applicant: Caterpillar Inc.
    Inventors: Aaron S. Ness, Andrew J. Loetz, John R. Brubaker, Christopher L. Batta
  • Low compression natural gas engine piston bowl for improved combustion stability
    Patent number: 11840983
    Abstract: A piston may have an annular body including a crown portion defining a longitudinal axis, a radial direction perpendicular to the longitudinal axis, a plane containing the longitudinal axis and the radial direction, and a contoured combustion bowl. In the plane containing the longitudinal axis and the radial direction, the crown portion includes a radially outer squish surface, and a swirl pocket having a reentrant surface that extends axially downwardly and radially outwardly from the squish surface defining a tangent that forms a reentrant angle with the squish surface that ranges from 53.0 degrees to 57.0 degrees.
    Type: Grant
    Filed: February 22, 2022
    Date of Patent: December 12, 2023
    Assignee: Caterpillar Inc.
    Inventors: Aaron S. Ness, Andrew J. Loetz, John R. Brubaker, Christopher L. Batta
  • LOW COMPRESSION NATURAL GAS ENGINE PISTON BOWL FOR IMPROVED COMBUSTION STABILITY
    Publication number: 20230265810
    Abstract: A piston may have an annular body including a crown portion defining a longitudinal axis, a radial direction perpendicular to the longitudinal axis, a plane containing the longitudinal axis and the radial direction, and a contoured combustion bowl. In the plane containing the longitudinal axis and the radial direction, the crown portion includes a radially outer squish surface, and a swirl pocket having a reentrant surface that extends axially downwardly and radially outwardly from the squish surface defining a tangent that forms a reentrant angle with the squish surface that ranges from 53.0 degrees to 57.0 degrees.
    Type: Application
    Filed: February 22, 2022
    Publication date: August 24, 2023
    Applicant: Caterpillar Inc.
    Inventors: Aaron S. Ness, Andrew J. Loetz, John R. Brubaker, Christopher L. Batta
  • Method and system for a cylinder liner
    Patent number: 11536218
    Abstract: Systems and methods for forming a plurality of valleys on an inner circumferential surface of a cylinder liner for uniform oil film thickness are disclosed. In one aspect, an internal combustion engine includes a piston; and a cylinder liner surrounding the piston, wherein the cylinder liner has a plurality of valleys on an inner circumferential surface of the cylinder liner, and wherein the plurality of valleys are formed to a frequency of 7 to 14 valleys per millimeter (mm) having a depth of at least 1 micrometer (?m).
    Type: Grant
    Filed: October 14, 2021
    Date of Patent: December 27, 2022
    Assignee: Caterpillar Inc.
    Inventors: Christopher L. Batta, Aaron S. Ness, Zachary T. Jacobs