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Research of the DI Diesel Spray Characteristics at High Temperature and High Pressure Ambient
Technical Paper
2007-01-0665
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
In order to clarify the diesel fuel spray characteristics inside the cylinder, we developed two novel techniques, which are preparation of same level of temperature and pressure ambient as inside cylinder and quantitative measurement of vapor concentration. The first one utilizes combustion-type constant-volume chamber (inner volume 110cc), which allows 5 MPa and 873K by igniting the pre-mixture (n-pentane and air) with two spark plugs. In the second technique, TMPD vapor concentration is measured by using Laser Induced Exciplex Fluorescence method (LIEF). The concentration is compensated by investigation of the influence of ambient pressure (from 3 to 5 MPa) and temperature (from 550 to 900 K) on TMPD fluorescence intensity. By using two techniques, we investigated the influence of nozzle hole diameter, injection pressure and ambient condition on spray characteristics.
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Citation
Yamashita, H., Suzuki, T., Matsuoka, H., Mashida, M. et al., "Research of the DI Diesel Spray Characteristics at High Temperature and High Pressure Ambient," SAE Technical Paper 2007-01-0665, 2007, https://doi.org/10.4271/2007-01-0665.Also In
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