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A method for determining Bunsen coefficient of bio-hybrid fuels Institute for Fluid Power Drives and Sys
- Format:
- Book
- Conference/Event
- Author/Creator:
- Hofmeister, Marius, author.
- Conference Name:
- SAE Powertrains, Fuels & Lubricants Digital Summit (2021-09-28 : Live Online, Pennsylvania, United States)
- Language:
- English
- Physical Description:
- 1 online resource cm
- Place of Publication:
- Warrendale, PA SAE International 2021
- Summary:
- In general, cavitation describes the formation of bubbles in a liquid due to pressure reduction below vapor pressure. The release of gas dissolved in the liquid is called aeration instead. Since cavitation leads to erosion in injection nozzles, aeration is also of great importance in this context. In order to describe the occurrence of aeration in an injection nozzle and the interaction between aeration and spray break-up, the amount of dissolved gas is of decisive importance.As a measure of how much gas is solved in a liquid, the Bunsen coefficient can be used, which indicates the maximum gas volume that can be solved in a liquid. For the determination of the Bunsen coefficient, a test rig was developed, which enables measurements in a range from 0 to 400 bar and 40 to +80 °C.In this contribution, the phenomenon of aeration in injection nozzles and the influence of the amount of dissolved gas on the spray break-up will be described. Subsequently, the measuring principle used at the Institute for Fluid Power Drives and Systems for determining the Bunsen coefficient and measurement results of conventional as well as for bio-hybrid fuels will be presented. Furthermore, the possibility of conditioning fuel samples with a defined amount of gas will be examined. To investigate a correlation between the amount of dissolved gas and the influence on cavitation in the nozzle and on the spray break-up, these samples are used for two more experiments. First, the cavitation inside the nozzle is made visible with the aid of a transparent glass nozzle and is recorded with a high-speed camera. In a further experiment, the high speed camera is used for the investigation of the spray break-up
- Notes:
- Vendor supplied data
- Publisher Number:
- 2021-01-1187
- Access Restriction:
- Restricted for use by site license
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