The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 17, 2004
Filed:
Feb. 21, 2003
Scott A. Goodenough, Kalamazoo, MI (US);
Tim D. Haas, Hamburg, DE;
Thomas K. Rapp, Besigheim, DE;
Aaron M. Jacobs, Grand Rapids, MI (US);
Michael T. Dillane, Grand Rapids, MI (US);
Gregg R. Spoolstra, Byron Center, MI (US);
Daren N. Bolbolan, Shelbyville, MI (US);
Robert Bosch GmbH, Stuttgart, DE;
Abstract
A fuel injector pump in a direct-injection fuel delivery system for an internal combustion engine including a solenoid valve for controlling transfer of fluid from a high pressure chamber to a fuel injector nozzle. A supply passage and a return passage provide a fuel flow circuit for the fuel delivery system, the high pressure chamber being defined in part by a camshaft-driven plunger. An independent fuel leak flow path is provided to accommodate fuel leakage past a plunger of the pump, the fuel leak flow path extending to a zero pressure fuel tank.