Accession Number : ADA328581

Title :   Control of Mixing by MEMS Based Distributed Fuel Injectors

Descriptive Note : Final technical rept. 1 Feb 94-31 Jan 97

Corporate Author : CALIFORNIA UNIV LOS ANGELES DEPT OF MECHANICAL AEROSPACE AND NUCLEAR ENGINEER ING

Personal Author(s) : Ho, Chih-Ming ; Kim, Chang-Jin

PDF Url : ADA328581

Report Date : 20 AUG 1997

Pagination or Media Count : 13

Abstract : In this paper, we propose to use micro injectors to control mixing of flow for combustion enhancement. The principle and development of the micro injectors are described. Ejection of droplets (8 micrometers in diameter) from the micro injectors has been detected with a pulse train of 53 mA current, 1 kHz frequency, and 1/30 duty cycle. In parallel, an air jet experiment has been performed to control the shedding frequency of the air jet with perpendicularly injected droplets by utilizing a commercial inkjet printhead (HP 51604A) as the source of droplets. The results demonstrated the ability for the injected droplets to change the flow's characteristic frequency from the natural shedding one to the forcing (injection) one.

Descriptors :   *FUEL INJECTORS, SCANNING ELECTRON MICROSCOPES, EFFICIENCY, COMBUSTION, MIXING, PULSE TRAINS.

Subject Categories : Mfg & Industrial Eng & Control of Product Sys
      Reciprocating and Rotating Engines

Distribution Statement : APPROVED FOR PUBLIC RELEASE