Patents by Inventor Steven Gerard Fritz

Steven Gerard Fritz 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).

  • Exhaust gas temperature assist for two-cycle uniflow scavenged diesel engines at lower engine loads with various engine operating schemes
    Patent number: 11333091
    Abstract: A method of raising exhaust gas temperatures of a two-cycle uniflow scavenged engine at lower loads. At lower loads, the exhaust valves are activated with a frequency that is less frequent than every engine cycle. This exhaust valve deactivation may be combined with additional engine operating strategies, such as by using fewer than all cylinders as combusting cylinders, adjusting fueling to combusting cylinders, and reducing compressor output.
    Type: Grant
    Filed: October 12, 2020
    Date of Patent: May 17, 2022
    Assignee: Yelir, Inc.
    Inventors: Michael B. Riley, John Craig Hedrick, Steven Gerard Fritz
  • Exhaust Gas Temperature Assist for Two-Cycle Uniflow Scavenged Diesel Engines at Lower Engine Loads with Various Engine Operating Schemes
    Publication number: 20210054795
    Abstract: A method of raising exhaust gas temperatures of a two-cycle uniflow scavenged engine at lower loads. At lower loads, the exhaust valves are activated with a frequency that is less frequent than every engine cycle. This exhaust valve deactivation may be combined with additional engine operating strategies, such as by using fewer than all cylinders as combusting cylinders, adjusting fueling to combusting cylinders, and reducing compressor output.
    Type: Application
    Filed: October 12, 2020
    Publication date: February 25, 2021
    Inventors: Michael B. Riley, John Craig Hedrick, Steven Gerard Fritz