Research Article
Study on Premixed Combustion in a Diesel Engine with Ultra-multihole Nozzle
Table 9
Test result at different test cases.
| speed r/min | Torque N.m | Load% | EGR Rate% | Injection pressure MPa | Injection starting point °CA ATDC | Excess air coefficient λ | Soot g/kW·h | NOx g/kW·h | HC g/kW·h | CO g/kW·h | BSFC g/kW·h | CA50 °CA ATDC |
| 1000 | 62 | 10 | 84 | 90 | −1.5 | 2.81 | 0.0059 | 3.10 | 14.85 | 56.44 | 402.0 | 16.2 | 155 | 25 | 81 | 110 | −1.5 | 1.68 | 0.0012 | 1.49 | 5.08 | 21.23 | 274.8 | 17.9 | 217 | 35 | 49 | 120 | 0 | 1.40 | 0.0099 | 1.17 | 3.79 | 19.67 | 263.1 | 20.3 | 310 | 50 | 26 | 120 | 2.5 | 1.43 | 0.0516 | 4.04 | 1.07 | 11.41 | 252.9 | 19.4 |
| 1430 | 75 | 10 | 72 | 110 | −2 | 2.53 | 0.0000 | 3.36 | 31.96 | 57.07 | 431.6 | 24.1 | 188 | 25 | 60 | 110 | −3 | 1.59 | 0.0223 | 1.87 | 4.10 | 13.96 | 269.9 | 19.6 | 263 | 35 | 37 | 110 | 0 | 1.50 | 0.0236 | 1.91 | 1.19 | 8.76 | 256.7 | 20.7 | 375 | 50 | 24 | 120 | 3 | 1.35 | 0.2831 | 2.97 | 0.35 | 10.75 | 249.5 | 21.1 |
| 1770 | 70 | 10 | 65 | 90 | −3 | 2.48 | 0.0000 | 3.68 | 25.15 | 46.81 | 470.9 | 25.2 | 175 | 25 | 51 | 100 | −1 | 1.66 | 0.0069 | 1.48 | 3.81 | 15.98 | 314.3 | 24.2 | 245 | 35 | 45 | 110 | 1 | 1.47 | 0.0263 | 1.17 | 2.69 | 12.98 | 299.5 | 31.9 | 350 | 50 | 28 | 110 | 4.5 | 1.48 | 0.0238 | 2.09 | 3.11 | 8.15 | 281.5 | 32.8 |
| 2110 | 67 | 10 | 69 | 110 | −2.5 | 2.24 | 0.0054 | 3.77 | 38.17 | 50.84 | 553.6 | 22.8 | 167 | 25 | 60 | 110 | −2.5 | 1.58 | 0.0192 | 1.10 | 6.49 | 17.67 | 334.2 | 23.9 | 233 | 35 | 44 | 110 | 0.5 | 1.54 | 0.0257 | 1.40 | 3.97 | 11.05 | 307.9 | 27.3 | 333 | 50 | 28 | 110 | 4 | 1.74 | 0.0317 | 2.11 | 0.87 | 5.27 | 284.7 | 29.1 |
| 2300 | 64 | 10 | 38 | 110 | −1 | 2.95 | 0.0126 | 7.11 | 11.91 | 27.22 | 574.7 | 21.2 | 160 | 25 | 50 | 120 | −1 | 1.77 | 0.0137 | 2.09 | 5.35 | 12.62 | 348.8 | 22.4 | 224 | 35 | 42 | 110 | 1.5 | 1.66 | 0.0219 | 1.74 | 2.51 | 10.42 | 336.9 | 29 | 320 | 50 | 37 | 120 | 4 | 1.53 | 0.0366 | 1.49 | 0.61 | 8.28 | 314.5 | 33.4 |
| 750 | 5 | — | 38 | 80 | 1 | 5.72 | 0.0675 | 28.52 | 268.27 | 542.46 | 3027.9 | 18 |
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