Wavelength-Agile Laser Sensors for Measuring Gas Properties in Engines 2003-01-1116
Internal combustion engines present a harsh environment for optical sensors, owing to challenges such as high pressures, multiple phases, and window fouling. Fortunately, a new class of “wavelength-agile” light sources that rapidly scan through a broad wavelength range facilitates accurate absorption spectroscopy in engines. Gas temperature and species concentrations can be monitored with fast time response (down to ∼ 1 μs). Here, two strategies for generating wavelength-agile light are introduced. We present in-cylinder results obtained by applying one of the strategies to monitor gas temperature and H2O concentration during compression in a single-cylinder optical engine operating in HCCI mode. Such data will be useful for improving the understanding of engine phenomena and offer the potential for active engine control.
Citation: Kranendonk, L., Caswell, A., Myers, A., and Sanders, S., "Wavelength-Agile Laser Sensors for Measuring Gas Properties in Engines," SAE Technical Paper 2003-01-1116, 2003, https://doi.org/10.4271/2003-01-1116. Download Citation
Author(s):
Laura A. Kranendonk, Andrew W. Caswell, Adam M. Myers, Scott T. Sanders
Affiliated:
Engine Research Center, University of Wisconsin - Madison
Pages: 6
Event:
SAE 2003 World Congress & Exhibition
ISSN:
0148-7191
e-ISSN:
2688-3627
Also in:
Sensors and Transducers, Second Edition-PT-105, Combustion and Flow Diagnostics-SP-1748, SAE 2003 Transactions Journal of Engines-V112-3
Related Topics:
Optics
Sensors and actuators
Combustion and combustion processes
Spectroscopy
Lasers
Gases
Windows and windshields
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