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Advanced Heavy Fuel Injection System for UAS/UGS Applications

Award Information
Agency: Department of Defense
Branch: Office of the Secretary of Defense
Contract: FA8650-15-C-2630
Agency Tracking Number: O2-1543
Amount: $992,194.00
Phase: Phase II
Program: SBIR
Solicitation Topic Code: OSD13-PR1
Solicitation Number: 2013.3
Timeline
Solicitation Year: 2013
Award Year: 2015
Award Start Date (Proposal Award Date): 2015-09-03
Award End Date (Contract End Date): 2017-09-08
Small Business Information
200 Yellow Place, Rockledge, FL, 32955
DUNS: 000000000
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Paul Yelvington
 (321) 631-3550
 pyelvington@mainstream-engr.com
Business Contact
 Michael Rizzo
Phone: (321) 631-3550
Email: mar@mainstream-engr.com
Research Institution
N/A
Abstract
This effort is to develop a fast responding, light weight, direct injection system to operate within the fuels ignition delay time for UAS/UGS application. These systems must be applicable to engines that are 200 HP or less, either reciprocating or rotary. A technical challenge associated with the conversion of gasoline engines to heavy fuel (JP-8) is the avoidance of knock. An approach used to avoid knock is to operate within the fuels ignition delay time; hence to employ direct combustion chamber injection. The challenges of the reciprocating engine are to avoid end gas knock (auto ignition occurring in the end gas after spark) and to inject the fuel very late into the cycle. The challenges for the rotary engine are atomization and the avoidance of wall quenching due to its combustion chamber shape. Delaying the injection process causes higher pressure rise rates which can exceed the engines design capabilities. An injection system that offers fast response and multiple injections per cycle may alleviate excessive pressure rise and the avoidance of knock. Good combustion control eliminates many durability issues from overloading, shock, and combustion deposits. The shape of the combustion trace can be tailored through multiple injection pulses and combustion deposits can be controlled with better atomization and fuel patterns. Hence an injection system that offers fine atomization, fast response, and multiple injections per cycle is needed. System components are to include injectors, high pressure supply pump (1000 bar min), feed pump and controller with harness.

* Information listed above is at the time of submission. *

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