Patents by Inventor Nicolas Gräter

Nicolas Gräter 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).

  • Arrangement and method for storing a reduction agent and supplying it to an exhaust gas system of an combustion engine and an internal combustion engine including such a system
    Patent number: 9038371
    Abstract: In a supply arrangement for supplying a solution containing a reducing agent, in particular urea, to an exhaust gas system of an internal combustion engine wherein a supply line extending from a storage tank to an injector which is connected to the exhaust gas system includes an operating tank and a dosing arrangement, a return line extends between the dosing arrangement and the storage tank and the dosing arrangement includes a directional valve for directing solution to the injector during a first operating mode in which the engine is operating and, in a second operating mode in which the engine is shut down, directing the solution back to the storage tank for emptying the operating tank.
    Type: Grant
    Filed: August 8, 2011
    Date of Patent: May 26, 2015
    Assignee: MTU FRIEDRICHSHAFEN GMBH
    Inventor: Nicolas Gräter
  • Supply arrangement for supplying an exhaust gas system with a solution including a reduction agent, an internal combustion engine, a generator uint and a method as well as a control arrangement therefor
    Publication number: 20120031073
    Abstract: In a supply arrangement for supplying a solution containing a reducing agent, in particular urea, to an exhaust gas system of an internal combustion engine wherein a supply line extending from a storage tank to an injector which is connected to the exhaust gas system includes an operating tank and a dosing arrangement, a return line extends between the dosing arrangement and the storage tank and the dosing arrangement includes a directional valve for directing solution to the injector during a first operating mode in which the engine is operating and, in a second operating mode in which the engine is shut down, directing the solution back to the storage tank for emptying the operating tank.
    Type: Application
    Filed: August 8, 2011
    Publication date: February 9, 2012
    Inventor: Nicolas Gräter