Patents by Inventor Georgios Lolas

Georgios Lolas 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 operating an SCR-catalytic converter
    Patent number: 8479497
    Abstract: The invention provides for a method for operating an SCR catalytic converter for the aftertreatment of exhaust gases of an internal combustion engine, wherein a reducing agent tank (1) with reducing agent and a reducing agent metering device (8) are provided. The reducing agent tank (1) has at least one tank heater (3) having PTC characteristics. A variable characterizing the heater current is acquired for detecting cavities (10) in the reducing agent tank (1) when the reducing agent is frozen. The presence of cavities is suggested from a deviation of the acquired value or values for the variable characterizing the heater current from a predeterminable reference value, which represents a reducing agent tank without cavities.
    Type: Grant
    Filed: March 23, 2010
    Date of Patent: July 9, 2013
    Assignee: Robert Bosch GmbH
    Inventors: Georgios Lolas, Wolfgang Klenk, Andreas Wagner
  • METHOD FOR OPERATING AN SCR-CATALYTIC CONVERTER
    Publication number: 20100236243
    Abstract: The invention provides for a method for operating an SCR catalytic converter for the aftertreatment of exhaust gases of an internal combustion engine, wherein a reducing agent tank (1) with reducing agent and a reducing agent metering device (8) are provided. The reducing agent tank (1) has at least one tank heater (3) having PTC characteristics. A variable characterizing the heater current is acquired for detecting cavities (10) in the reducing agent tank (1) when the reducing agent is frozen. The presence of cavities is suggested from a deviation of the acquired value or values for the variable characterizing the heater current from a predeterminable reference value, which represents a reducing agent tank without cavities.
    Type: Application
    Filed: March 23, 2010
    Publication date: September 23, 2010
    Applicant: Robert Bosch GMBH
    Inventors: Georgios Lolas, Wolfgang Klenk, Andreas Wagner