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:
Nov. 10, 2015
Filed:
Aug. 03, 2012
Daniel R. Baldwin, Peoria, IL (US);
Dennis H. Gibson, Chillicothe, IL (US);
Dana R. Coldren, Secor, IL (US);
Mark F. Sommars, Hopewell, IL (US);
Daniel R. Baldwin, Peoria, IL (US);
Dennis H. Gibson, Chillicothe, IL (US);
Dana R. Coldren, Secor, IL (US);
Mark F. Sommars, Hopewell, IL (US);
Caterpillar Inc., Peoria, IL (US);
Abstract
A dual fuel common rail engine supplies pressurized natural gas and liquid diesel fuel at different pressures through a co-axial quill assembly for direct injection from a single fuel injector into an engine cylinder. Each coaxial quill assembly includes a matched pair of inner and outer quills that are chosen to have dimensions that allow both quills to sealingly engage each fuel injector at a common conical seat responsive to a clamping force applied along an axis. Matched pairs of inner and outer quills are retained together during pre-installation handling with a retainer that is left between the inner and outer quills after installation in an engine.