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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 41, Iss. 24 — Aug. 20, 2002
  • pp: 5002–5014

Application of a high-repetition-rate laser diagnostic system for single-cycle-resolved imaging in internal combustion engines

Johan Hult, Mattias Richter, Jenny Nygren, Marcus Aldén, Anders Hultqvist, Magnus Christensen, and Bengt Johansson  »View Author Affiliations


Applied Optics, Vol. 41, Issue 24, pp. 5002-5014 (2002)
http://dx.doi.org/10.1364/AO.41.005002


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Abstract

High-repetition-rate laser-induced fluorescence measurements of fuel and OH concentrations in internal combustion engines are demonstrated. Series of as many as eight fluorescence images, with a temporal resolution ranging from 10 µs to 1 ms, are acquired within one engine cycle. A multiple-laser system in combination with a multiple-CCD camera is used for cycle-resolved imaging in spark-ignition, direct-injection stratified-charge, and homogeneous-charge compression-ignition engines. The recorded data reveal unique information on cycle-to-cycle variations in fuel transport and combustion. Moreover, the imaging system in combination with a scanning mirror is used to perform instantaneous three-dimensional fuel-concentration measurements.

© 2002 Optical Society of America

OCIS Codes
(120.1740) Instrumentation, measurement, and metrology : Combustion diagnostics
(300.2530) Spectroscopy : Fluorescence, laser-induced

History
Original Manuscript: October 26, 2001
Revised Manuscript: April 25, 2002
Published: August 20, 2002

Citation
Johan Hult, Mattias Richter, Jenny Nygren, Marcus Aldén, Anders Hultqvist, Magnus Christensen, and Bengt Johansson, "Application of a high-repetition-rate laser diagnostic system for single-cycle-resolved imaging in internal combustion engines," Appl. Opt. 41, 5002-5014 (2002)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-41-24-5002


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