Patents by Inventor Pentti Niemelä

Pentti Niemelä 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 and a measuring system for determining and monitoring exhaust gas emission from a vehicle
    Patent number: 7049595
    Abstract: A method and a measuring system for determining exhaust gas emissions from a moving vehicle by a remote optical measuring technique. The model and/or type of the vehicle under examination is identified, and the driving situation of the vehicle in question is determined at the moment of measurement. A calculatory vehicle model is used to determine a case-specific estimate for the carbon dioxide concentration of the exhaust gas plume depending on the vehicle in question and its driving situation. The accuracy of determining the concentrations of the actual emission gases is improved by eliminating the inaccuracy of the carbon dioxide concentration values.
    Type: Grant
    Filed: April 3, 2002
    Date of Patent: May 23, 2006
    Assignee: Valtion Teknillinen Tutkimuskeskus
    Inventors: Markku Känsäkoski, Pentti Niemelä