Patents Assigned to Detroit Diesel Corporation
  • Patent number: 10047710
    Abstract: A method of refurbishing a fuel injector body valve seat. The method includes removing a poppet valve from the valve bore guide, machining the bore and valve seat to remove cavitation, machining to create an undercut a the stress riser, nitriding the valve bore guide and radiusing fuel passage to a sufficient depth to restore hardness thereto.
    Type: Grant
    Filed: November 7, 2007
    Date of Patent: August 14, 2018
    Assignee: DETROIT DIESEL CORPORATION
    Inventors: Roman F. Kosiorek, Terrance G. Cunningham
  • Patent number: 8849543
    Abstract: A method and computer readable medium are disclosed to control operation of an internal combustion engine having an electronic control unit (ECU) with memory to burn off HC in an engine exhaust system and limit hydrocarbon and NOx content in the engine exhaust stream while operating the engine in idle mode.
    Type: Grant
    Filed: September 20, 2011
    Date of Patent: September 30, 2014
    Assignee: Detroit Diesel Corporation
    Inventors: Marleen F. Thompson, Tomislav Ivo Golub
  • Patent number: 8769933
    Abstract: A method to operate a vehicle equipped an internal combustion engine and a transmission coupled to drive wheels. The vehicle is equipped with a parking brake and has an electronic control unit with memory and the engine in fluid communication with an exhaust aftertreatment system. The method includes the steps of determining whether the engine is operating in idle mode for a predetermined period of time; determining whether NOx emissions exceed a predetermined level after the predetermined period of time; and limiting the engine speed not to exceed a predetermined engine speed until an operator engages the parking brake and engages an engine ignition switch.
    Type: Grant
    Filed: September 20, 2011
    Date of Patent: July 8, 2014
    Assignee: Detroit Diesel Corporation
    Inventors: Marleen F. Thompson, Tomislav Ivo Golub
  • Patent number: 8649961
    Abstract: A method to operate an electronic controlled internal combustion engine to perform on board NOx emissions level diagnostics. In one embodiment, the method may include operating the engine to maintain a predetermined temperature for a predetermined period of time, determining whether the engine operating status is stable for one of cruise control, idle engine speed, engine torque, or high idle regeneration for a predetermined period of time, cycling the EGR valve between a first position for a predetermined period of time and then in a second position for a predetermined period of time, a determining a change in engine out NOx levels to determine whether an engine component or system is malfunctioning.
    Type: Grant
    Filed: September 20, 2011
    Date of Patent: February 11, 2014
    Assignee: Detroit Diesel Corporation
    Inventors: Jeffery Scott Hawkins, Marc Christian Allain, Justin R. Kollien
  • Patent number: 8474248
    Abstract: A method to control NH3 slippage and NOx conversion in an electronic controlled internal combustion engine exhaust system equipped with a selective catalyst reducer, a diesel particulate filter, a diesel oxidation catalyst and a urea doser.
    Type: Grant
    Filed: May 6, 2009
    Date of Patent: July 2, 2013
    Assignee: Detroit Diesel Corporation
    Inventors: Min Sun, Sathish Sankara-Chinttoanony, Bryant Chan Pham, Amr Mohamed Radwan, Zhiping Han, Wolfgang Krueger
  • Publication number: 20130070804
    Abstract: A method to estimate ambient air temperature in the vicinity of a vehicle equipped with an internal combustion engine equipped with at least an ignition and an electronic control unit (ECU) with memory.
    Type: Application
    Filed: September 20, 2011
    Publication date: March 21, 2013
    Applicant: Detroit Diesel Corporation
    Inventors: Jeffery S. Hawkins, Michael C. Salch, Bryant C. Pham, Kurt J. Couture
  • Publication number: 20130068203
    Abstract: A method to operate an electronic controlled internal combustion engine to perform on board NOx emissions level diagnostics. In one embodiment, the method may include operating the engine to maintain a predetermined temperature for a predetermined period of time, determining whether the engine operating status is stable for one of cruise control, idle engine speed, engine torque, or high idle regeneration for a predetermined period of time, cycling the EGR valve between a first position for a predetermined period of time and then in a second position for a predetermined period of time, a determining a change in engine out NOx levels to determine whether an engine component or system is malfunctioning.
    Type: Application
    Filed: September 20, 2011
    Publication date: March 21, 2013
    Applicant: Detroit Diesel Corporation
    Inventors: Jeffery S. Hawkins, Marc C. Allain, Justin R. Kollien
  • Publication number: 20130073176
    Abstract: A method and computer readable medium are disclosed to control operation of an internal combustion engine having an electronic control unit (ECU) with memory to burn off HC in an engine exhaust system and limit hydrocarbon and NOx content in the engine exhaust stream while operating the engine in idle mode.
    Type: Application
    Filed: September 20, 2011
    Publication date: March 21, 2013
    Applicant: Detroit Diesel Corporation
    Inventors: Marleen F. Thompson, Tomislav I. Golub
  • Publication number: 20130067890
    Abstract: A method to optimize operation of a diesel fuel engine having at least one aftertreatment device to reduce NOx is provided. An electronic control unit for a diesel engine with an aftertreatment device for the reduction of NOx is also provided. The method and the control unit optimize a quantity of fuel to be injected into an aftertreatment device based upon inputs relating to the cost of diesel fuel and the cost of diesel exhaust fluid.
    Type: Application
    Filed: September 20, 2011
    Publication date: March 21, 2013
    Applicant: Detroit Diesel Corporation
    Inventors: Joseph J. Michalek, Rakesh K. Aneja
  • Publication number: 20130073177
    Abstract: A method to operate a vehicle equipped an internal combustion engine and a transmission coupled to drive wheels. The vehicle is equipped with a parking brake and has an electronic control unit with memory and the engine in fluid communication with an exhaust aftertreatment system. The method includes the steps of determining whether the engine is operating in idle mode for a predetermined period of time; determining whether NOx emissions exceed a predetermined level after the predetermined period of time; and limiting the engine speed not to exceed a predetermined engine speed until an operator engages the parking brake and engages an engine ignition switch.
    Type: Application
    Filed: September 20, 2011
    Publication date: March 21, 2013
    Applicant: Detroit Diesel Corporation
    Inventors: Marleen F. Thompson, Tomislav Ivo Golub
  • Patent number: 8375700
    Abstract: Method and apparatus for evaluating an ammonia conversion efficiency of an ammonia oxidation (AMOX) catalyst for reducing ammonia and hydrocarbons present in an exhaust gas stream. The AMOX associated with an exhaust gas after-treatment system has a selective catalytic reduction (SCR) catalyst for reducing nitrogen oxides (NOX) present in the exhaust gas stream and a dosing system for introducing a reductant into the exhaust gas stream for reacting with the nitrogen oxides in the presence of the SCR catalyst. The AMOX catalyst is arranged downstream of the SCR catalyst.
    Type: Grant
    Filed: March 30, 2010
    Date of Patent: February 19, 2013
    Assignee: Detroit Diesel Corporation
    Inventors: Kevin Dean Sisken, Yi Liu
  • Patent number: 8281571
    Abstract: A method to regenerate a diesel particulate filter in an exhaust system with a fuel doser for normal and transient vehicle travel. The vehicle may be equipped with an electronically controlled compression ignition engine with an electronic control unit having memory and capable of receiving data signals from remote senor indicative of vehicle operating conditions.
    Type: Grant
    Filed: March 6, 2009
    Date of Patent: October 9, 2012
    Assignee: Detroit Diesel Corporation
    Inventor: Jeffrey M. Girbach
  • Patent number: 8281586
    Abstract: A method to operate an electronically controlled internal combustion engine having an electronic central unit with memory a turbocharger and exhaust gas recirculation valve to determine performance characteristics of said variable geometric turbocharger.
    Type: Grant
    Filed: December 14, 2009
    Date of Patent: October 9, 2012
    Assignee: Detroit Diesel Corporation
    Inventors: Jason T. Barton, Daniel W. Potter, Andrew M. Mitchell, Stephen E. Kramer, Kevin K. Luther, Marie A. Racette
  • Publication number: 20120210700
    Abstract: A method to diagnose exhaust system malfunction in an electronically controlled internal combustion engine having an exhaust system and including a Selective Catalyst Reducer (SCR) is disclosed. The method may comprise determining ambient barometric pressure; determining a baseline curve of exhaust flow; and monitoring said exhaust flow rate for changes in exhaust flow rate compared to change of exhaust pressure across the SCR to diagnose exhaust system malfunction.
    Type: Application
    Filed: February 17, 2011
    Publication date: August 23, 2012
    Applicant: Detroit Diesel Corporation
    Inventors: Kevin D. Sisken, Marc C. Allain
  • Patent number: 8209962
    Abstract: A system and method for controlling an internal combustion engine senses differential pressure across the diesel particulate filter to monitor at least one of soot cake permeability and filter wall permeability as a function of exhaust temperature and mass flow velocity. The system and method preferably respond to both porous wall and soot cake permeabilities to determine when the soot level matches a threshold at which an operator may be warned, or at which a remedial operation may be triggered, or at which a more protective action taken by the engine control module.
    Type: Grant
    Filed: September 28, 2005
    Date of Patent: July 3, 2012
    Assignee: Detroit Diesel Corporation
    Inventors: Min Sun, Houshun Zhang, Zornitza Pavlinova Pavlova-MacKinnon, Kevin Dean Sisken
  • Publication number: 20120138026
    Abstract: A method to operate an electronically controlled internal combustion engine to diagnose low boost. In one embodiment, the method may include determining whether changes in at least one engine operating condition has occurred; comparing actual engine boost signal with a predetermined boost signal; maintaining engine operating conditions for a predetermined period of time to ensure stability of boost signal gradient for a first predetermined period of time; determining whether boost signal gradient is stable for a second predetermined period of time; determining boost signal change by comparing stability of actual boost signal with a predetermined boost signal determining whether boost signal is stable; and ceasing boost signal monitoring prior to active boost signal gradient change.
    Type: Application
    Filed: December 7, 2010
    Publication date: June 7, 2012
    Applicant: Detroit Diesel Corporation
    Inventor: Christoph Niessen
  • Publication number: 20120124966
    Abstract: A method to operate an internal combustion engine with a diesel particulate filter to extend the life of the diesel particulate filter by initiating active regeneration of the diesel particulate filter when the soot load of the filter exceeds a predetermined actual soot load value.
    Type: Application
    Filed: November 22, 2010
    Publication date: May 24, 2012
    Applicant: Detroit Diesel Corporation
    Inventor: Wolfgang A. Krueger
  • Publication number: 20120107138
    Abstract: A method to operate an electronically controlled air compressor powered by an internal combustion engine, wherein the air compressor is selectively activated when the air compressor minimum threshold value differs from the air compressor minimum threshold hysteresis by a predetermined value, and is deactivated when the air compressor maximum threshold value and the air compressor maximum threshold value hysteresis value differ by a predetermined value.
    Type: Application
    Filed: October 28, 2010
    Publication date: May 3, 2012
    Applicant: Detroit Diesel Corporation
    Inventors: Admir Kreso, Aaron D. Neuman, Bryant C. Pham
  • Patent number: 8156733
    Abstract: In one embodiment, the present invention relates to a method to operate an internal combustion engine equipped with an Electronic Control Unit (ECU) with memory, an exhaust system including a Diesel Oxidation Catalyst (DOC), a Diesel Particulate Filter (DPF), upstream of a Selective Catalyst Reducer (SCR). A doser is in the DPF and actuated by commands from the ECU. The method includes sensors at the DPF and SCR electronically connected to the ECU to transmit data signals indicative of operating conditions at the DPF and SCR. The method includes sensing the temperature at an outlet of the DPF and an inlet at the SCR, determining whether that temperature is at least a predetermined temperature for a predetermined period of time, and introducing heat to the SCR to raise its temperature to a predetermined level for a predetermined period of time, such as light off temperature, to operate more efficiently. Heat may be introduced in the exhaust stream by engine thermal management strategies as well.
    Type: Grant
    Filed: February 29, 2008
    Date of Patent: April 17, 2012
    Assignee: Detroit Diesel Corporation
    Inventors: Kevin Dean Sisken, Matthew Thomas Baird
  • Patent number: 8156729
    Abstract: A method for operating an internal combustion engine for variable engine out NOx control talking into account the age of the SCR.
    Type: Grant
    Filed: December 20, 2007
    Date of Patent: April 17, 2012
    Assignee: Detroit Diesel Corporation
    Inventor: Min Sun