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Title: Ducted fuel injection with ignition assist

Patent ·
OSTI ID:1495324

Various technologies presented herein relate to enhancing mixing inside a combustion chamber to form one or more locally premixed mixtures comprising fuel and charge-gas to enable minimal, or no, generation of soot and/or other undesired emissions during ignition and subsequent combustion of the locally premixed mixtures. To enable sufficient mixing of the fuel and charge-gas, a jet of fuel can be directed to pass through a bore of a duct causing charge-gas to be drawn into the bore creating turbulence to mix the fuel and the drawn charge-gas. The duct can be located proximate to an opening in a tip of a fuel injector. An ignition assist component can be located downstream of the duct to facilitate ignition of the fuel/charge-gas mixture.

Research Organization:
Sandia National Laboratories (SNL), Albuquerque, NM, and Livermore, CA (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
AC04-94AL85000
Assignee:
National Technology & Engineering Solutions of Sandia, LLC (Albuquerque, NM)
Patent Number(s):
10,138,855
Application Number:
15/364,002
OSTI ID:
1495324
Resource Relation:
Patent File Date: 2016 Nov 29
Country of Publication:
United States
Language:
English

References (33)

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Bicatalytic igniter converter and processor for internal combustion engines patent May 1992
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Low emissions burner patent November 1996
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Variable geometry ejector patent March 2012
Direct injection method and apparatus for low NOx combustion of high hydrogen fuels patent October 2014
Ducted combustion chamber for direct injection engines and method patent March 2015
Laser ignition system based diagnostics patent March 2016
Ducted fuel injection patent March 2018

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33 ADVANCED PROPULSION SYSTEMS