Patents by Inventor John Elvin Doub

John Elvin Doub 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).

  • Method for monitoring an engine starting system and engine including starting system monitor
    Patent number: 8789507
    Abstract: In a method of monitoring an engine starting system in an engine, the engine starting system includes a charging system, a battery, a starter, a flywheel, and a controller. The controller and monitors can monitor components and systems associated with starting of an engine, such as engine or cranking speed, power cylinder unit compression, injection timing, and proper fuel delivery to predict and/or diagnose problems. For example, a charging system voltage is monitored and the charging system voltage is compared with predetermined charging system voltage values. Voltage of the battery is monitored and battery voltage is compared with predetermined battery voltage values. A signal to an operator is provided if one or more of the charging system voltage and the battery voltage are outside of predetermined ranges for the one or more of the charging system voltage and the battery voltage.
    Type: Grant
    Filed: June 18, 2007
    Date of Patent: July 29, 2014
    Assignee: Mack Trucks, Inc.
    Inventor: John Elvin Doub
  • METHOD FOR MONITORING AN ENGINE STARTING SYSTEM AND ENGINE INCLUDING STARTING SYSTEM MONITOR
    Publication number: 20100175656
    Abstract: In a method of monitoring an engine starting system in an engine, the engine starting system includes a charging system, a battery, a starter, a flywheel, and a controller. The controller and monitors can monitor components and systems associated with starting of an engine, such as engine or cranking speed, power cylinder unit compression, injection timing, and proper fuel delivery to predict and/or diagnose problems. For example, a charging system voltage is monitored and the charging system voltage is compared with predetermined charging system voltage values. Voltage of the battery is monitored and battery voltage is compared with predetermined battery voltage values. A signal to an operator is provided if one or more of the charging system voltage and the battery voltage are outside of predetermined ranges for the one or more of the charging system voltage and the battery voltage.
    Type: Application
    Filed: June 18, 2007
    Publication date: July 15, 2010
    Applicant: Mack Trucks, Inc
    Inventor: John Elvin Doub