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:
Jan. 04, 2005
Filed:
Jun. 26, 2002
John D. Crofts, Edinburgh, IN (US);
Arthur C. Truman, Iii, Columbus, IN (US);
Jung-min C. Sung, Columbus, IN (US);
Peter Rauznitz, Columbus, IN (US);
John D. Crofts, Edinburgh, IN (US);
Arthur C. Truman, III, Columbus, IN (US);
Jung-min C. Sung, Columbus, IN (US);
Peter Rauznitz, Columbus, IN (US);
Cummins Inc., Columbus, IN (US);
Abstract
An injector is provided which includes a nozzle valve element, a control volume, and an injection control valve including a control valve member for controlling fuel flow from the control volume so as to control nozzle valve movement. Importantly, the injector includes a nozzle valve lift detecting device for detecting nozzle valve lift and providing a nozzle valve element lift feedback signal. Feedback signals are improved and control valve member oscillations are minimized by positioning a valve seat associated with the control valve member a spaced distance from the control volume, positioning a drain orifice such that the nozzle valve element restricts flow through a drain circuit when in an open position and extending the control valve member from the valve seat to the control volume to form an end wall of the control volume.