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Ognyan N Yanakiev

age ~59

from San Francisco, CA

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Also known as:
  • Ognyan Nikolaev Yanakiev
  • Nikolaev O Yanakiev
  • Ognyan N Yankiev
  • Yanakiev Ognyan
  • N V
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Ognyan Yanakiev Phones & Addresses

  • San Francisco, CA
  • Los Angeles, CA
  • Pittsburgh, PA
  • Bloomfield Hills, MI
  • Frisco, CO
  • Birmingham, MI
  • Columbus, IN
  • Canton, MI
  • Oakland, MI
  • Dearborn, MI

Us Patents

  • Exhaust Gas Recirculation Estimation System

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  • US Patent:
    7493896, Feb 24, 2009
  • Filed:
    Dec 27, 2006
  • Appl. No.:
    11/646611
  • Inventors:
    Sherif H. El Tahry - Troy MI, US
    Ognyan N. Yanakiev - Canton MI, US
  • Assignee:
    GM Global Technology Operations, Inc. - Detroit MI
  • International Classification:
    F02M 25/07
    F02B 47/08
    F28F 27/02
  • US Classification:
    12356812, 165103, 701108
  • Abstract:
    A control system and method for an exhaust gas recirculation (EGR) system of an engine includes a first sensor that senses fresh mass air flow, a second sensor that senses charge air flow, where the charge air flow is based on the fresh mass air flow and EGR exhaust flow, and a calculation module that determines a difference between the fresh mass airflow and the charge air flow and generates an EGR valve control signal based on the difference.

  • Dual Stage Turbocharger Control System

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  • US Patent:
    7735320, Jun 15, 2010
  • Filed:
    Aug 29, 2006
  • Appl. No.:
    11/468035
  • Inventors:
    Ognyan N. Yanakiev - Canton MI, US
  • Assignee:
    GM Global Technology Operations, Inc. - Detroit MI
  • International Classification:
    F02D 23/00
  • US Classification:
    60602, 60612
  • Abstract:
    A control system for a dual stage turbo includes a control module, a variable geometry turbine (VGT) module, and a bypass valve module. The control module generates a turbo control signal based on an manifold absolute pressure (MAP) and a desired MAP. The VGT module generates a VGT control signal to actuate vanes in a VGT based on the turbo control signal. The bypass valve module generates a bypass control signal based on the turbo control signal and the VGT control signal. The bypass control signal actuates a valve to bypass the VGT.

  • Method For Controlling An Internal Combustion Engine During Regeneration Of An Emission After-Treatment Device

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  • US Patent:
    7886524, Feb 15, 2011
  • Filed:
    Oct 24, 2005
  • Appl. No.:
    11/256858
  • Inventors:
    Michiel van Nieuwstadt - Ann Arbor MI, US
    Kevin Chen - Canton MI, US
    Kevin Murphy - Troy MI, US
    Ognyan Yanakiev - Canton MI, US
  • Assignee:
    Ford Global Technologies, LLC - Dearborn MI
  • International Classification:
    F01N 3/00
  • US Classification:
    60285, 60284, 60286, 60273, 60301
  • Abstract:
    A method for improving engine control during a regeneration of an exhaust gas after treatment device is described. According to one aspect of the description, engine air amount and engine fuel amount may be adjusted based on data from a previously executed regeneration of an exhaust gas after treatment device.

  • Robust Design Of Diagnostic Enabling Conditions For Scr Nox Conversion Efficiency Monitor

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  • US Patent:
    8091416, Jan 10, 2012
  • Filed:
    Jan 16, 2009
  • Appl. No.:
    12/355094
  • Inventors:
    Ognyan N. Yanakiev - Canton MI, US
    Charles E. Solbrig - Ypsilanti MI, US
  • Assignee:
    GM Global Technology Operations LLC - Detroit MI
  • International Classification:
    G01M 15/10
  • US Classification:
    7311475
  • Abstract:
    A method for controlling a malfunction catalyst diagnostic test that determines a malfunction status of a catalyst within a selective catalytic reduction device includes monitoring an exhaust gas flow within an aftertreatment system, estimating an effect of the exhaust gas flow on an estimated reductant storage on a catalyst within the selective catalytic reduction device, and selectively disabling the malfunction catalyst diagnostic test based upon the estimating the effect of the exhaust gas flow on the estimated reductant storage.

  • System And Methods To Detect Non-Urea Reductant Filled In A Urea Tank

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  • US Patent:
    8171720, May 8, 2012
  • Filed:
    Oct 6, 2008
  • Appl. No.:
    12/245830
  • Inventors:
    Ognyan N. Yanakiev - Canton MI, US
    Man-Feng Chang - Troy MI, US
  • Assignee:
    GM Global Technology Operations LLC - Detroit MI
  • International Classification:
    F01N 3/00
  • US Classification:
    60277, 60286, 60295, 60274
  • Abstract:
    A method for indicating a non-urea reductant fault in a powertrain including an internal combustion engine and an aftertreatment system having an aftertreatment device utilizing a catalyst to convert NOx includes monitoring a NOx content exiting the aftertreatment system subsequent to a powertrain start-up event through a test span, monitoring a measure of NOx content entering the aftertreatment system subsequent to a powertrain start-up event through the test span, and determining a measure of NOx conversion accomplished in the aftertreatment device based upon the NOx content exiting the aftertreatment system and the measure of NOx content entering the aftertreatment system. The method includes, through the test span, comparing the measure of NOx conversion determined at a start of the test span to the measure of NOx conversion at a later time within the test span. A non-urea reductant fault is indicated based upon the comparing identifying a reduction in NOx conversion accomplished in the aftertreatment device between the start of the test span and the later time within the test span.

  • Aftertreatment Device Nox Conversion Efficiency Diagnostics Using On Board Adaptive Diagnostic Algorithm

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  • US Patent:
    8201444, Jun 19, 2012
  • Filed:
    Aug 7, 2009
  • Appl. No.:
    12/537395
  • Inventors:
    Ognyan N. Yanakiev - Canton MI, US
    Charles E. Solbrig - Ypsilanti MI, US
  • Assignee:
    GM Global Technology Operations LLC - Detroit MI
  • International Classification:
    G01M 15/10
  • US Classification:
    7311475
  • Abstract:
    A powertrain includes an internal combustion engine and an aftertreatment system having an aftertreatment device utilizing a catalyst to convert NOx. A method for indicating a malfunctioning catalyst includes monitoring an actual NOx content exiting the aftertreatment system, monitoring factors affecting conversion efficiency of the aftertreatment device, determining a predicted threshold NOx content exiting the aftertreatment system for an exemplary malfunctioning catalyst based upon the factors affecting conversion efficiency, comparing the actual NOx content exiting the aftertreatment system to the predicted threshold NOx content exiting the aftertreatment system, and indicating a malfunctioning catalyst based upon the comparing.

  • On Board Diagnostic Monitor Of Nox Conversion Efficiency For Aftertreatment Device

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  • US Patent:
    8245567, Aug 21, 2012
  • Filed:
    Aug 7, 2009
  • Appl. No.:
    12/537390
  • Inventors:
    Charles E. Solbrig - Ypsilanti MI, US
    Ognyan N. Yanakiev - Canton MI, US
  • Assignee:
    GM Global Technology Operations LLC - Detroit MI
  • International Classification:
    G01M 15/10
  • US Classification:
    7311475
  • Abstract:
    A method for indicating a malfunctioning catalyst in a powertrain including an internal combustion engine and an aftertreatment system including an aftertreatment device utilizing a catalyst to convert NOx includes monitoring a NOx content entering the aftertreatment system, monitoring a NOx content exiting the aftertreatment system, determining an actual conversion efficiency based upon the NOx content entering the aftertreatment system and the NOx content exiting the aftertreatment system, monitoring factors affecting conversion efficiency within the aftertreatment device, determining a malfunction conversion efficiency indicative of the malfunctioning catalyst based upon the factors affecting conversion efficiency within the aftertreatment device, and indicating the malfunctioning catalyst based upon comparing the actual conversion efficiency to the malfunction conversion efficiency.

  • Temperature Control System And Method For Particulate Filter Regeneration Using A Hydrocarbon Injector

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  • US Patent:
    8265852, Sep 11, 2012
  • Filed:
    May 13, 2009
  • Appl. No.:
    12/464975
  • Inventors:
    Ognyan N. Yanakiev - Canton MI, US
    Charles E. Solbrig - Ypsilanti MI, US
  • International Classification:
    G06F 19/00
    F01N 3/025
    F01N 3/20
  • US Classification:
    701102, 60286, 60295, 60297, 60303, 60311
  • Abstract:
    A control system includes a first module, a fuel determination module, a temperature error correction module, and a hydrocarbon injection control module. The first module determines a temperature difference between a desired inlet temperature of a particulate filter (PF) and an outlet temperature of a first catalyst. The fuel determination module determines an uncorrected desired fuel value based on the temperature difference, an ambient temperature, and a mass flow of exhaust gas. The temperature error correction module generates a desired fuel value based on the uncorrected desired fuel value. The hydrocarbon injection control module controls a hydrocarbon injector based on the desired fuel value.
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