Limp home capable dual fuel engine and machine using same

US8944033B2 · US · B2

Patent metadata
FieldValue
Publication numberUS-8944033-B2
Application numberUS-201213606422-A
CountryUS
Kind codeB2
Filing dateSep 7, 2012
Priority dateSep 7, 2012
Publication dateFeb 3, 2015
Grant dateFeb 3, 2015

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Abstract

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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.

First claim

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What is claimed is: 1. A machine comprising: a machine body supported by a conveyance; a dual fuel compression ignition engine having a plurality of cylinders, being attached to the machine body and operably coupled to the conveyance; a dual fuel system operably coupled to supply the dual fuel compression ignition engine with liquid diesel fuel and natural gas fuel from a single fuel injector directly into respective engine cylinders; an electronic controller in control comm…

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What does patent US8944033B2 cover?
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 ar…
Who is the assignee on this patent?
Coldren Dana R, Steffen Joshua W, Uhland Gregg W, and 3 more
What technology area does this patent fall under?
Primary CPC classification F02B7/02. Mapped technology areas include Mechanical Engineering.
When was this patent published?
Publication date Tue Feb 03 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
What related patents are in patentsdb?
We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).