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An LPI injector includes an injector body that is supplied with fuel from the upper portion and injects the fuel down, an icing tube of which the upper end is coupled to the lower portion of the injector body and that injects the fuel inside the injector body through a fuel injection channel therein, a valve seat disposed between the injector body and the icing tube and fitted in the lower portion of the injector body, having an injection hole to inject the fuel and a tube-fastening groove fitted on the icing tube around the injection hole, and a ball valve that is seated at the injector body of the valve seat and opens/closes the injection hole.

Titel:	LPI injector
Autor/in / Beteiligte Person:	Song, Jinoh
Link:	View record in USPTO Patent Grants (Volltext)
Veröffentlichung:	2014
Medientyp:	Patent
Sonstiges:	Nachgewiesen in: USPTO Patent Grants Sprachen: English Patent Number: 8,690,082 Publication Date: April 08, 2014 Appl. No: 13/194438 Application Filed: July 29, 2011 Assignees: Hyundai Motor Company (Seoul, KR) Claim: 1. An LPI injector, comprising: an injector body that is supplied with a fuel from an upper portion thereof and injects the fuel down; an icing tube formed in a pipe-shape, having a fuel injection channel through which the fuel flows, and having an upper end coupled to an lower portion of the injector body; a valve seat disposed between the injector body and the icing tube and fitted in the lower portion of the injector body; an injection hole formed at a center portion of a lower portion of the valve seat to inject the fuel; and a tube-fastening groove formed in the valve seat for facilitating insertion of the icing tube around the injection hole; and a ball valve that is seated at the valve seat and opens/closes the injection hole; wherein a locking protrusion is formed to radially protrude on an outer circumference of the upper end of the icing tube and a locking groove is formed at an interior surface of the valve seat around the injection hole so that the locking protrusion is engaged with the locking groove. Claim: 2. The LPI injector as defined in claim 1 , wherein the valve seat is made of an elastic material. Claim: 3. The LPI injector as defined in claim 1 , wherein a plurality of the injection holes is formed. Current U.S. Class: 2395/332 Patent References Cited: 5263648 November 1993 Vogt et al. ; 5823444 October 1998 Reiter et al. ; 6390067 May 2002 Haltiner, Jr. et al. ; 6877678 April 2005 Xu et al. ; 2004/0036048 February 2004 Petersen ; 10-2001-0032506 April 2001 ; 10-0931144 December 2009 ; 10-2010-0025640 March 2010 ; 10-2010-0046422 May 2010 ; 10-2010-0063435 June 2010 Primary Examiner: Hwu, Davis Attorney, Agent or Firm: Morgan, Lewis & Bockius LLP

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