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:
Mar. 17, 2015
Filed:
Dec. 23, 2011
Applicants:
Mark F. Sommars, Sparland, IL (US);
Hoisan Kim, Dunlap, IL (US);
Xiangdong Ding, Peoria, IL (US);
Inventors:
Assignee:
Caterpillar Inc., Peoria, IL (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F02M 43/04 (2006.01); F02D 19/06 (2006.01); F02M 43/00 (2006.01); F02M 55/00 (2006.01); F02M 69/46 (2006.01);
U.S. Cl.
CPC ...
F02M 43/04 (2013.01); F02D 19/0647 (2013.01); F02D 19/0689 (2013.01); F02D 19/0694 (2013.01); F02M 43/00 (2013.01); F02M 55/004 (2013.01); F02M 55/008 (2013.01); F02M 2200/46 (2013.01); Y02T 10/36 (2013.01);
Abstract
A dual fuel common rail fuel injector includes a first and second check needle used to selectively inject two different fuels such as diesel and liquefied natural gas. The fuel injector includes a fuel separator disposed in the interior cavity of the first check needle and is in sealing contact with the nozzle. The fuel separator is configured to prevent commingling of the diesel fuel and the liquefied natural gas. The fuel injector also includes at least one sealing member that is configured to prevent the diesel fuel from leaking from the diesel fuel check cavity into a gaseous fuel orifice.