Quadratic Prediction Models for the Performance Comparison of a Marine Engine Fuelled with Biodiesels B5 and B20

<div class="floats-full-page floats-full-page-other"><h2>Table 4</h2><div class="floats-full-page-caption">Accuracy check of the quadratic prediction model for biodiesel B5.</div><div class="floats-full-page-content"><table class="table-group" id="tab4"><tr><td><table class="table"><tr><td class="thead-hr" colspan="6"><hr /></td></tr><tr class="thead"><td align="left" rowspan="2">Speed (rpm)</td><td align="center" colspan="2">Torque-B5 (Nm)</td><td align="center" colspan="3">Error</td></tr><tr class="thead"><td align="center">Measured value</td><td align="center">Predicted value</td><td align="center">(Nm)</td><td align="center">Percentage</td><td align="center">Absolute percentage</td></tr><tr><td class="thead-hr" colspan="6"><hr /></td></tr><tr><td align="left">1000</td><td align="center">785.10</td><td align="center">786.77</td><td align="center">1.67</td><td align="center">0.21%</td><td align="center">0.21%</td></tr><tr><td align="left">1100</td><td align="center">735.28</td><td align="center">740.16</td><td align="center">4.88</td><td align="center">0.66%</td><td align="center">0.66%</td></tr><tr><td align="left">1200</td><td align="center">640.12</td><td align="center">621.52</td><td align="center">−18.60</td><td align="center">−2.91%</td><td align="center">2.91%</td></tr><tr><td align="left">1300</td><td align="center">415.10</td><td align="center">430.85</td><td align="center">15.75</td><td align="center">3.79%</td><td align="center">3.79%</td></tr><tr><td align="left">1400</td><td align="center">171.89</td><td align="center">168.14</td><td align="center">−3.75</td><td align="center">−2.18%</td><td align="center">2.18%</td></tr><tr><td align="center" colspan="6"><hr /></td></tr><tr><td align="center" colspan="3">Average or mean</td><td align="center">0.008</td><td align="center">−0.083%</td><td align="center">1.95%</td></tr><tr><td align="center" colspan="6"><hr /></td></tr><tr><td align="center" colspan="4">Interpretation</td><td align="center">99.917% accuracy</td><td align="center">Excellent prediction</td></tr><tr class="table-tr"><td colspan="6"><hr class="tbody-hr" /></td></tr></table></td></tr></table></div></div>

Table 4 | Quadratic Prediction Models for the Performance Comparison of a Marine Engine Fuelled with Biodiesels B5 and B20

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Table 4: Quadratic Prediction Models for the Performance Comparison of a Marine Engine Fuelled with Biodiesels B5 and B20

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Table 4

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International Journal of Engineering Mathematics

Quadratic Prediction Models for the Performance Comparison of a Marine Engine Fuelled with Biodiesels B5 and B20

Table 4