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:
May. 12, 2015
Filed:
Oct. 26, 2012
Applicant:
Caterpillar Inc., Peoria, IL (US);
Inventors:
Assignee:
Caterpillar Inc., Peoria, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02M 21/02 (2006.01); F02B 13/00 (2006.01); F02D 19/06 (2006.01); F02D 41/00 (2006.01);
U.S. Cl.
CPC ...
F02M 21/0278 (2013.01); F02D 19/0605 (2013.01); F02D 19/0623 (2013.01); F02D 19/0647 (2013.01); F02D 19/0694 (2013.01); F02D 41/0025 (2013.01); F02D 41/0027 (2013.01); F02M 21/0221 (2013.01); F02M 21/0239 (2013.01); Y02T 10/32 (2013.01); Y02T 10/36 (2013.01);
Abstract
A compression ignition dual fuel engine supplies natural gas fuel and liquid diesel fuel to each engine cylinder from a common fuel injector. Each fuel injector is fluidly connected to both a liquid fuel common rail and a gaseous fuel common rail. The engine includes a surplus gas system for capturing surplus gas, such as evaporated gas from the gaseous fuel supply and pressure control system, or left over pressurized natural gas produced by engine shut down. Rather than being vented to atmosphere, the surplus gas can be burned in the engine when operating conditions present burn opportunities.