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:
Feb. 03, 2015
Filed:
Sep. 07, 2012
Dana R. Coldren, Secor, IL (US);
Joshua W. Steffen, Mountain View, CA (US);
Gregg W. Uhland, Peoria, IL (US);
Brian K. Garman, Groveland, IL (US);
Alan R. Stockner, Metamore, IL (US);
Dana R. Coldren, Secor, IL (US);
Joshua W. Steffen, Mountain View, CA (US);
Gregg W. Uhland, Peoria, IL (US);
Brian K. Garman, Groveland, IL (US);
Alan R. Stockner, Metamore, IL (US);
Caterpillar Inc., Peoria, IL (US);
Abstract
A dual fuel engine powers a machine by burning natural gas and liquid diesel fuel. When operating in a low load mode, some of the engine cylinders are fueled with a high ratio of diesel/gas, and the remaining cylinders are unfueled. When operating in a high load mode, all of the engine cylinders are fueled with a low ratio of diesel/gas. When operating in a limp home mode, the fuel injectors are configured to inject only diesel fuel into all of the plurality of engine cylinders.