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| Lubrication properties of biodiesel and its raw oil measured by HFRR |
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| KeyWord:biodiesel HFRR lubrication performance corrected grinding spot diameter |
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| Abstract: |
| The lubrication properties of 14 kinds of biodiesels and their raw oils were analyzed by HFRR. Through the determination and analysis of the lubrication performance of Chinese prickly ash oil biodiesel under different working conditions, the measurement conditions were obtained as follows: test temperature 60?℃, temperature inside the box 22-24?℃ and test humidity 40%-50%. Under these conditions, the deviation of average grinding spot diameter and corrected grinding spot diameter could be reduced, and the influence of the environment on the test results could be reduced. The results showed that the lubrication performances of 14 kinds of biodiesels and raw oils had some differences, and the lubrication performance difference of biodiesel was less than the lubrication performance difference of raw oil. The corrected grinding spot diameter of waste oil among 14 kinds of raw oils was the maximum, while the corresponding corrected grinding spot diameter of waste oil biodiesel among 14 kinds of biodiesels was the minimum. Meanwhile, the corrected grinding spot diameter of waste oil was greater than that of waste oil biodiesel. Additionally, the lubrication performances of the other 13 kinds of vegetable oils were superior to that of the corresponding biodiesels. |
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