Patents by Inventor Hossein Javaherian

Hossein Javaherian 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).

  • Adaptive spark timing controller for an internal combustion engine
    Patent number: 4867124
    Abstract: An adaptive ignition controller for an internal combustion engine provides for engine operation at substantially peak thermal efficiency for all engine operating conditions by controlling the ignition advance angle intiating combustion to a crankshaft angle before top dead center that is substantially equal to the crankshaft angle after top dead center at which combustion is completed.
    Type: Grant
    Filed: March 14, 1988
    Date of Patent: September 19, 1989
    Assignee: General Motors Corporation
    Inventor: Hossein Javaherian
  • Adaptive spark timing controller for an internal combustion engine
    Patent number: 4867123
    Abstract: An adaptive ignition controller for an internal combustion engine provides for engine operation at substantially peak thermal efficiency for all engine operating conditions by controlling the ignition advance angle initiating combustion to a crankshaft angle before top dead center that establishes the burn center at a predetermined crankshaft angle, the burn center being determined by monitoring the value of an indicator function PV.nu. during the combustion period.
    Type: Grant
    Filed: June 2, 1988
    Date of Patent: September 19, 1989
    Assignee: General Motors Corporation
    Inventor: Hossein Javaherian
  • Method of estimating the fuel/air ratio of an internal combustion engine
    Patent number: 4788854
    Abstract: A method of estimating the fuel/air ratio of the mixture supplied to an engine is described in which the in-cylinder pressure signal in a combustion cycle is processed to obtain an estimate of the fresh mixture strength supplied to the cylinder. The estimation is obtained by calculating the trapped charge mass and the total fuel mass consumed in a combustion cycle. Based on these values, the fuel/air ratio is estimated.
    Type: Grant
    Filed: December 7, 1987
    Date of Patent: December 6, 1988
    Assignee: General Motors Corporation
    Inventor: Hossein Javaherian