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:
Jul. 29, 2008
Filed:
Feb. 18, 2005
Michael P. Cooke, Gillingham, GB;
Andrew J. Limmer, Bury St. Edmunds, GB;
Louise A. Connelly, Rainham, GB;
Michael P. Cooke, Gillingham, GB;
Andrew J. Limmer, Bury St. Edmunds, GB;
Louise A. Connelly, Rainham, GB;
Delphi Technologies, Inc., Troy, MI (US);
Abstract
An injection nozzle for an internal combustion engine, the injection nozzle including an outer valve needle which is engageable with an outer valve seating so as to control injection through a first nozzle outlet, an inner valve needle which is movable within the outer valve needle and engageable with an inner valve seating so as to control injection through a second nozzle outlet, and a coupling arrangement for coupling movement of the outer valve needle to the inner valve needle in circumstances in which the outer valve needle is moved away from the outer valve seating beyond a predetermined amount, thereby to permit fuel injection through both the first and second nozzle outlets. The outer valve seating defines first and second seats for the outer valve needle, wherein co-operation between the outer valve needle and the first seat controls fuel flow between a first delivery chamber and the first nozzle outlet and co-operation between the outer valve needle and the second seat controls fuel flow between a second delivery chamber and the first nozzle outlet. The second delivery chamber communicates with the first delivery chamber by way of a supplementary flow path defined, at least partially, within the outer valve needle. The coupling arrangement includes a resilient member carried by the outer valve needle, the resilient member being brought into engagement with the inner valve needle following movement of the outer valve needle beyond the predetermined amount so as to cause the inner valve needle to move together with the outer valve needle.