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Experimental Characterization of Methane Direct Injection from an Outward-Opening Poppet-Valve Injector Istituto Motori CNR
- Format:
- Book
- Conference/Event
- Author/Creator:
- Lazzaro, Maurizio, author.
- Conference Name:
- 14th International Conference on Engines & Vehicles (2019-09-15 : Capri, Italy)
- Language:
- English
- Physical Description:
- 1 online resource cm
- Place of Publication:
- Warrendale, PA SAE International 2019
- Summary:
- The in-cylinder direct injection of natural gas can be a further step towards cleaner and more efficient internal combustion engines (ICE). However, the injector design and its characterization, both experimentally and by numerical simulation, is challenging because of the complex fluid dynamics related to gas compressibility and the small length scale. In this work, the under-expanded flow of methane from an outward-opening poppet-valve injector has been experimentally characterized by high-speed schlieren imaging. The investigation has been performed at ambient temperature and pressure and different nozzle pressure ratios (NPR) ranging from 10 to 18. The gaseous jet has been characterized in terms of its macroscale parameters. A scaling-law analysis of the results has been performed. The gas-dynamic structure at the nozzle exit has been also investigated
- Notes:
- Vendor supplied data
- Publisher Number:
- 2019-24-0135
- Access Restriction:
- Restricted for use by site license
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