Patents by Inventor Tom Lönnqvist

Tom Lönnqvist 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).

  • Supercharged combustion engine, preferably of diesel type, provided with a device for exhaust gas feedback
    Patent number: 6237335
    Abstract: A supercharged combustion engine is provided with a device for exhaust gas feedback, so-called EGR, between the engine's outlet and its inlet. The device incorporates an exhaust gas driven turbine which drives a compressor which in its turn feeds exhaust gases, EGR, from the engine's outlet to its inlet. Valves situated respectively downstream and upstream from the compressor act on the EGR flow on the basis of parameters representing the engine's operating state so that desired EGR is obtained without unfavorable pressure distribution occurring across the compressor.
    Type: Grant
    Filed: August 10, 1999
    Date of Patent: May 29, 2001
    Assignee: Scania CV Aktiebolag (publ)
    Inventor: Tom Lönnqvist