Patents by Inventor Jerry W. Kortge

Jerry W. Kortge 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).

  • Adapter phasor control hold duty cycle system for an engine
    Patent number: 8019526
    Abstract: A camshaft phasor control system for an engine includes a camshaft position sensor that generates a current camshaft position signal based on position of a camshaft. A first comparator generates a camshaft position signal based on the current camshaft position signal and a crankshaft position. The second comparator generates an error signal based on the relative camshaft position signal and a commanded camshaft position signal. A control module determines a current control hold duty cycle (CHDC) for a camshaft phasor based on an engine state parameter. The control module also generates a correction signal based on the error signal, adjusts the current CHDC based on the correction signal to generate a commanded CHDC signal, and generates another CHDC based on the commanded CHDC signal.
    Type: Grant
    Filed: June 3, 2008
    Date of Patent: September 13, 2011
    Inventors: Kenneth J. Cinpinski, Ljubisa M. Mladenovic, Jerry W. Kortge, Gregory J. York
  • Methods and systems to identify cam phaser hardware degradation
    Patent number: 7918130
    Abstract: A cam phaser diagnostic system is provided. The system includes: a first sample variance module that computes a first variance based on a desired cam phaser position. A second sample variance module computes a second variance based on a measured cam phaser position. An evaluation module diagnoses faulty cam phaser operation based on the first variance and the second variance.
    Type: Grant
    Filed: May 11, 2007
    Date of Patent: April 5, 2011
    Inventor: Jerry W. Kortge
  • ADAPTER PHASOR CONTROL HOLD DUTY CYCLE SYSTEM FOR AN ENGINE
    Publication number: 20090145384
    Abstract: A camshaft phasor control system for an engine includes a camshaft position sensor that generates a current camshaft position signal based on position of a camshaft. A first comparator generates a camshaft position signal based on the current camshaft position signal and a crankshaft position. The second comparator generates an error signal based on the relative camshaft position signal and a commanded camshaft position signal. A control module determines a current control hold duty cycle (CHDC) for a camshaft phasor based on an engine state parameter. The control module also generates a correction signal based on the error signal, adjusts the current CHDC based on the correction signal to generate a commanded CHDC signal, and generates another CHDC based on the commanded CHDC signal.
    Type: Application
    Filed: June 3, 2008
    Publication date: June 11, 2009
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
    Inventors: Kenneth J. Cinpinski, Ljubisa M. Mladenovic, Jerry W. Kortge, Gregory J. York
  • METHODS AND SYSTEMS TO IDENTIFY CAM PHASER HARDWARE DEGRADATION
    Publication number: 20080281453
    Abstract: A cam phaser diagnostic system is provided. The system includes: a first sample variance module that computes a first variance based on a desired cam phaser position. A second sample variance module computes a second variance based on a measured cam phaser position. An evaluation module diagnoses faulty cam phaser operation based on the first variance and the second variance.
    Type: Application
    Filed: May 11, 2007
    Publication date: November 13, 2008
    Inventor: Jerry W. Kortge
  • PURGE FLOW CONTROL TO REDUCE AIR/FUEL RATIO IMBALANCE
    Publication number: 20080178852
    Abstract: A fuel control system that regulates a purge flow from a fueling system to an engine includes a sensor that monitors an engine speed and a first module that determines a PWM frequency of a purge valve based on the engine speed. The PWM frequency includes a first period that is based on a second period that corresponds to two engine cycles. A second module regulates the purge valve based on the PWM frequency during engine operation.
    Type: Application
    Filed: January 30, 2007
    Publication date: July 31, 2008
    Inventors: Gregory E. Labus, Jerry W. Kortge, William R. Cadman
  • Purge flow control to reduce air/fuel ratio imbalance
    Patent number: 7401600
    Abstract: A fuel control system that regulates a purge flow from a fueling system to an engine includes a sensor that monitors an engine speed and a first module that determines a PWM frequency of a purge valve based on the engine speed. The PWM frequency includes a first period that is based on a second period that corresponds to two engine cycles. A second module regulates the purge valve based on the PWM frequency during engine operation.
    Type: Grant
    Filed: January 30, 2007
    Date of Patent: July 22, 2008
    Assignee: GM Global Technology Operations, Inc.
    Inventors: Gregory E. Labus, Jerry W. Kortge, William R. Cadman
  • Canister purge controller
    Patent number: 4741318
    Abstract: A system and method of controlling the purge rate of a fuel vapor collection canister of an internal combustion engine in which the purge flow rate is variably controlled to a maximum rate that is established by the fuel control system based on its ability to maintain a desired air/fuel ratio.
    Type: Grant
    Filed: August 22, 1986
    Date of Patent: May 3, 1988
    Assignee: General Motors Corporation
    Inventors: Jerry W. Kortge, Steven L. Piedmont