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:
Jun. 30, 2009
Filed:
Nov. 20, 2007
Jonathan Borg, Erding, DE;
Harsha Badarinarayan, Novi, MI (US);
Donald J. Mccune, Farmington Hills, MI (US);
Atsushi Watanabe, Novi, MI (US);
Takuya Shiraishi, West Bloomfield, MI (US);
George Saikalis, West Bloomfield, MI (US);
Jonathan Borg, Erding, DE;
Harsha Badarinarayan, Novi, MI (US);
Donald J. McCune, Farmington Hills, MI (US);
Atsushi Watanabe, Novi, MI (US);
Takuya Shiraishi, West Bloomfield, MI (US);
George Saikalis, West Bloomfield, MI (US);
Hitachi, Ltd, Tokyo, JP;
Abstract
A fuel pump for a direct injection internal combustion engine having a body with a valve seat. The valve includes a valve head and the valve is movably mounted to the body between an open position and a closed position. In its open position, the valve head is spaced from the valve seat white in its closed position, the valve head abuts against the valve seat and closes the valve. An electric coil upon energization moves the valve to an open position and, conversely, upon deenergization allows the valve to move to a closed position. A control circuit controls the energization of the coil to reduce the pump noise during operation of the engine, especially at low speeds.