Patents by Inventor Henning Loerch

Henning Loerch 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).

  • Method for the post-treatment of exhaust gases by subsequent injection of fuel in a diesel-type internal combustion engine provided with a pre-catalyst and a particulate filter
    Patent number: 7185486
    Abstract: A process is proposed for exhaust gas aftertreatment by afterinjection of fuel in a diesel internal combustion engine with a precatalyst and a particulate filter, in which process the afterinjection NE is performed as a function of the temperature in the area of the precatalyst Tcat and of the state of charging of the particulate filter. Since this process operates with especially high efficiency in heretofore critical short-distance operation of diesel internal combustion engines, the strict requirements of future legislation relating to exhaust gas emissions can immediately be met.
    Type: Grant
    Filed: January 4, 2006
    Date of Patent: March 6, 2007
    Assignee: Audi AG
    Inventors: Kurt Bluhm, Henning Loerch
  • Method for the post-treatment of exhaust gases by subsequent injection of fuel in a diesel-type internal combustion engine provided with a pre-catalyst and a particulate filter
    Publication number: 20060086082
    Abstract: A process is proposed for exhaust gas aftertreatment by afterinjection of fuel in a diesel internal combustion engine with a precatalyst and a particulate filter, in which process the afterinjection NE is performed as a function of the temperature in the area of the precatalyst Tcat and of the state of charging of the particulate filter. Since this process operates with especially high efficiency in heretofore critical short-distance operation of diesel internal combustion engines, the strict requirements of future legislation relating to exhaust gas emissions can immediately be met.
    Type: Application
    Filed: January 4, 2006
    Publication date: April 27, 2006
    Inventors: Kurt Bluhm, Henning Loerch
  • Method for the post-treatment of exhaust gases by subsequent injection of fuel in a diesel-type internal combustion engine provided with a pre-catalyst and a particle filter
    Patent number: 6971230
    Abstract: A process is proposed for exhaust gas aftertreatment by afterinjection of fuel in a diesel internal combustion engine with a precatalyst and a particulate filter, in which process the afterinjection NE is performed as a function of the temperature in the area of the precatalyst Tcat and of the state of charging of the particulate filter. Since this process operates with especially high efficiency in heretofore critical short-distance operation of diesel internal combustion engines, the strict requirements of future legislation relating to exhaust gas emissions can immediately be met.
    Type: Grant
    Filed: October 18, 2000
    Date of Patent: December 6, 2005
    Assignee: Audi AG
    Inventors: Kurt Bluhm, Henning Loerch
  • Method for the desulphurisation of an oxidation catalyst arranged in the exhaust line of a diesel internal combustion engine
    Publication number: 20030051469
    Abstract: A process is proposed for desulfurization of an oxidation-type catalytic converter 8 mounted downstream in the exhaust gas stream of a diesel internal combustion engine 1 with the diesel internal combustion engine 1 being operated at a lambda value &lgr;1 of approximately 0.98 to 0.99 and an exhaust gas temperature T1 of at least 350° C. As a result the oxidation capacity of the oxidation-type catalytic converter 8 that is reduced by sulfur is restored within a short period of time and at moderate exhaust gas temperatures so that diesel internal combustion engines may also be operated at least temporarily with sulfurous fuel.
    Type: Application
    Filed: September 26, 2002
    Publication date: March 20, 2003
    Inventors: Henning Loerch, Kurt Bluhm