Natural Gas Engine Performance Ignited by a Passively Q-Switched Microlaser
A robust end pumped, passively Q-switched, air-cooled, microlaser was designed and prototyped to yield a 1064 nm pulsed laser output of 21 mJ/P with a pulse width of 4.2 ns FWHM. This microlaser was coupled to a standard laser plug carrying a sapphire lens with 13 mm back focal length. This assembly was tested in a natural gas fueled single-cylinder engine, and in one cylinder of a turbocharged 6-cylinder engine. Single cylinder engine tests showed extension of the lean ignition limit which enabled an efficiency improvement of 0.2% while meeting emission regulations. The tests conducted in the 6-cylinder engine showed highly improved ignition stability.
- Research Organization:
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Sponsoring Organization:
- USDOE Office of Energy Efficiency and Renewable Energy (EERE) - Advanced Manufacturing Office
- DOE Contract Number:
- AC02-06CH11357
- OSTI ID:
- 1335938
- Resource Relation:
- Conference: 3rd Laser Ignition Conference, 04/27/15 - 04/30/15, Argonne, IL, US
- Country of Publication:
- United States
- Language:
- English
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