Patents by Inventor James M. Witalec

James M. Witalec 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).

  • Purge system flow monitor and method
    Patent number: 5651349
    Abstract: A system and method of monitoring the purge flow in an evaporative emission control purge system of a motor vehicle. Signals indicative of engine speed, fuel control and automatic idle speed position are measured and used to determine whether the purge flow system is operating properly. With purge flow activated, the amount of purge flow is increased in accordance with a ramping rate and the measured signals are monitored to determine whether or not a change occurs in any one of the engine speed, fuel control and AIS position signals.
    Type: Grant
    Filed: December 11, 1995
    Date of Patent: July 29, 1997
    Assignee: Chrysler Corporation
    Inventors: Gregory J. Dykstra, Mark E. Hope, Kim M. Person, John E. Letcher, James M. Witalec
  • Hot soak for a flexible fuel compensation system
    Patent number: 5365917
    Abstract: A flexible fuel compensation system including a method of hot soak fuel enrichment. The hot soak fuel enrichment method includes checking a plurality of enabling conditions. The method also increments of decrements a hot fuel enrichment multiplier depending on conditions of the vehicle. The hot fuel enrichment multiplier is then used to adjust the amount of fuel being sent to the fuel injectors.
    Type: Grant
    Filed: May 4, 1993
    Date of Patent: November 22, 1994
    Assignee: Chrysler Corporation
    Inventors: Joseph B. Adams, William D. Rotramel, James M. Witalec
  • Knock strategy including high octane spark advance
    Patent number: 5233962
    Abstract: A method is provided for controlling knock on an internal combustion engine. The method includes the steps of determining a maximum value of knock and determining whether conditions are right for updating the maximum value of knock. The method also includes using an unmodified spark advance if conditions are not right for updating the maximum value of knock and modifying the spark advance if conditions are right for updating the maximum value of knock.
    Type: Grant
    Filed: April 30, 1992
    Date of Patent: August 10, 1993
    Assignee: Chrysler Corporation
    Inventors: Francis M. Fodale, Gregory J. Dykstra, Robert E. Lee, Gregory T. Weber, James M. Witalec, James T. Wyrembelski