吉林大学学报(工学版) ›› 2013, Vol. 43 ›› Issue (04): 903-908.doi: 10.7964/jdxbgxb201304010

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Combustion characteristics of diesel-gasoline blend fuel based on ultrasonic atomization technology

BAO Tang-tang, HU Zong-jie, HU Jun-chao, RUAN Yi-ping, DENG Jun, WU Zhi-jun   

  1. School of Automotive Studies, Tongji University, Shanghai 200092,China
  • Received:2012-06-14 Online:2013-07-01 Published:2013-07-01

Abstract:

Droplet swarm of diesel-gasoline blend fuel is prepared on an experimental system based on ultrasonic atomization technology. The mean droplet diameter, air/fuel ratio and droplet speed are independently adjustable to simulate the flow and mixing conditions of the spray in the cylinders of internal combustion engine. The droplet swarm is imported into a Controllable Active Thermo-Atmosphere Combustor (CATAC) to investigate the steady combustion characteristics of the droplet swarm. Results show that changing the diesel-to-gasoline mixing ratio, the fuel feeding speed and air flow leads the shape of spontaneous flame changes significantly. As the diesel component increases in the blend fuel, the lift-off height of flame increases, while the width of the flame decreases. The variations of fuel feed speed and air flow influence the equivalence fuel-to-air ratio and the central jet velocity, thus greatly influencing the fuel combustion characteristics.

Key words: power machinery and engineering, ultrasonic atomization, diesel-gasoline, blend fuel, combustion characteristics

CLC Number: 

  • TK40

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