| 姚磊，朱昌吉，刘宇，朱延鑫，贾江峰.天然气发动机燃烧制动性能仿真研究[J].内燃机工程,2018,39(3):30-35. |
| Simulation of CNG Engine Combustion Brake Performance |
| DOI：10.13949/j.cnki.nrjgc.2018.03.005 |
| Key Words:combustion brake ignition timing engine speed release valve lift release valve advance angle |
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| 摘要点击次数: 3708 |
| 全文下载次数: 1923 |
| Abstract:In order to simulate the effects of ignition timing, speed, and release valve operating parameters on engine combustion brake performance, the GT-Power software was used to establish a model of a certain engine and the simulation was then conducted. The results show that the engine braking power increases linearly with the advance of the ignition timing. At each ignition timing, the higher the engine speed, the greater the braking power; the higher the release valve lift, the greater the braking power. When the engine speed remains constant, each release valve lift has an optimal valve advance angle where the braking power reaches peak, and the optimal valve advance angle decreases as the release valve lift increases. When the release valve lift is fixed, each engine speed has an optimal release valve advance angle where the braking power is the maximum, and the optimal valve advance angle increases with the engine speed. At 4 mm valve lift and 2400 r/min engine speed, the maximum braking power is 137 kW, 1.7 times the rated engine power. |
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