If the engine backfires, the sudden pressure in the intake manifold forces the valve back.
如果发动机回火,进气歧管骤增的压力就迫使阀门向后移动。
The function of exhaust diffuser is to transform part of momentum energy of exhaust gases from engine into pressure energy to simulate actual exhaust back pressure and environment pressure.
排气扩压器的作用是将发动机排出燃气的部分动能转换成压力能,真实模拟发动机排气反压和环境压力条件。
But because of reduced injection timing and increased exhaust back pressure, the BSFC of the engine will be increased of 8%.
但由于提前角减小,排气背压增大,发动机燃油消耗率上升8%左右。
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