Patents by Inventor Aristotelis Babajimopoulos

Aristotelis Babajimopoulos 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).

  • Hybrid powertrain system using free piston linear alternator engines
    Patent number: 8261860
    Abstract: A hybrid powertrain system includes reciprocating free-piston internal combustion engines, each including a linear alternator device configured to generate electric power. A control module determines mechanical and electrical power demands responsive to an operator torque request and a state of charge of an energy storage device. The control module operates the torque machine to generate an output torque responsive to the mechanical power demands and operates the reciprocating free-piston internal combustion engines to generate electric power responsive to the electrical power demands.
    Type: Grant
    Filed: July 16, 2009
    Date of Patent: September 11, 2012
    Assignees: GM Global Technology Operations LLC, The Regents of the Univeristy of Michigan
    Inventors: Paul M. Najt, Tang-Wei Kuo, Rodney B. Rask, Aristotelis Babajimopoulos, Zoran S. Filipi, George Lavoie, Dionissios N. Assanis
  • COMPOUNDED DILUTION AND AIR CHARGING DEVICE
    Publication number: 20120090319
    Abstract: An internal combustion engine includes a turbocharger and a selectively operable positive displacement supercharger downstream of the turbocharger in the intake path. An input shaft of the supercharger is mechanically coupled to and driven by a piston-driven crankshaft. A bypass valve is configured to selectively bypass at least a portion of the air from the turbocharger air outlet around the supercharger. Power and fuel consumption are optimized by operating the supercharger to dilute the fuel-air mixture to achieve an excess air factor ? above 1.0, and in some cases above the upper range (?=1.3) of normal stoichiometric operation. The engine can operate in a lean low temperature combustion mode (e.g., HCCI) with the supercharger operating, and in a stoichiometric spark ignition combustion mode with the supercharger bypassed.
    Type: Application
    Filed: December 23, 2011
    Publication date: April 19, 2012
    Applicant: ROBERT BOSCH GMBH
    Inventors: Alan Mond, Aristotelis Babajimopoulos, Prasad Sunand Shingne, Hakan Yilmaz, Dionissios Assanis
  • HYBRID POWERTRAIN SYSTEM USING FREE PISTON LINEAR ALTERNATOR ENGINES
    Publication number: 20110011660
    Abstract: A hybrid powertrain system includes reciprocating free-piston internal combustion engines, each including a linear alternator device configured to generate electric power. A control module determines mechanical and electrical power demands responsive to an operator torque request and a state of charge of an energy storage device. The control module operates the torque machine to generate an output torque responsive to the mechanical power demands and operates the reciprocating free-piston internal combustion engines to generate electric power responsive to the electrical power demands.
    Type: Application
    Filed: July 16, 2009
    Publication date: January 20, 2011
    Applicants: GM GLOBAL TECHNOLOGY OPERATIONS, INC., REGENTS OF THE UNIVERSITY OF MICHIGAN
    Inventors: Paul M. Najt, Tang-Wei Kuo, Rodney B. Rask, Aristotelis Babajimopoulos, Zoran S. Filipi, George Lavoie, Dionissios N. Assanis