Optical investigation of injection and combustion in a small direct injection diesel engine

A new phenomenological model of injection and auto-ignition is established in a 4-cylinder DI diesel engine of the production size class equipped with an inclined 5 holes injector. Measurements are performed at representative engine conditions for partial load. The penetration of the liquid phases is visualized in the whole combustion chamber by simultaneous Laser-Induced Fluorescence (LIF) and Mie scattering techniques. The autoignition and combustion are analyzed by a time-resolved direct imaging of the chemiluminescence process. Experiments based on the correlation of two separated images of the combustion phenomena in a single cycle have allowed a detailed comprehension of spatial and temporal description of the autoignition and reaction zones development. Several autoignition sites are revealed in the vicinity of the injector nozzle. The reaction zone is shown to develop independently and then to merge to a unique one in the whole combustion chamber. Finally the flame is convected by air motion in the cylinder.

• Record URL:
  • https://doi.org/10.4271/2001-24-0018
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/01487191
• Supplemental Notes:
  • Abstract reprinted with permission of SAE International.
• Authors:
  • Maunoury, B
  • Duverger, T
  • Mokaddem, K
  • Lacas, F
• Conference:
  • 2001 Internal Combustion Engines
  • Location: Capri - Naples , Italy
  • Date: 2001-9-23
• Publication Date: 2001-9-23

Language

• English

Media Info

• Media Type: Web
• Serial:
  • SAE Technical Paper
  • Publisher: Society of Automotive Engineers (SAE)
  • ISSN: 0148-7191
  • EISSN: 2688-3627
  • Serial URL: http://papers.sae.org/

Subject/Index Terms

• TRT Terms: Combustion; Combustion chambers; Engine cylinders; Visualization
• Subject Areas: Highways; Vehicles and Equipment;

Filing Info

• Accession Number: 01799027
• Record Type: Publication
• Source Agency: SAE International
• Report/Paper Numbers: 2001-24-0018
• Files: TRIS, SAE
• Created Date: Dec 9 2021 10:19AM