| 1. | Cylinder pressure and combustion noise of internal combustion engine
内燃机缸内压力与燃烧噪声 |
| 2. | Analysis on the relationship between rise rate of cylinder pressure and combustion noise
车用柴油机气缸压力升高率与燃烧噪声的关系 |
| 3. | In light of the generation mechanism , the surface radiation noise can be further divided into the combustion noise and the mechanical noise
按照产生的机理，柴油机表面辐射噪声又可以分为燃烧噪声和机械噪声。 |
| 4. | Generally speaking , for an injection diesel engine , the combustion noise is higher than the mechanical noise ; whilst the case is the other way round for a non - injection diesel engine
一般直喷式柴油机燃烧噪声要高于机械噪声，而非直喷式柴油机的机械噪声则高于燃烧噪声，但是低速运转时燃烧噪声都高于机械噪声。 |
| 5. | More often than not the combustion noise refers to the noise radiated from the cylinder cap , piston , rod , crankshaft to the engine body propelled by the pressure vibration generated out of the combustion inside the cylinder
燃烧噪声和机械噪声很难严格区分，通常将由于气缸内燃烧所形成的压力振动通过缸盖、活塞-连杆-曲轴-机体向外辐射的噪声称之为燃烧噪声。 |
| 6. | The control over the surface radiation noise ( combustion noise and mechanic noise ) is restricted by factors like the engine performance . technically such a control is quite difficult to manage and the noise reduction effect is not so encouraging
发动机表面辐射噪声（燃烧噪声和机械噪声）的控制要受到发动机性能方面的种种限制，从技术角度讲难度很大，且降噪量有限。 |
| 7. | Based on the variables of inlet length , compression ratio , inlet opening phase and the exhaust closing phase , multi - objective optimization was conducted for power , torque , combustion noise and fuel consumption indicators with constraint conditions of fuel consumption rate and the maximum breakout pressure
以进气道长度、压缩比、进气开启相位、排气关闭相位为可变因素；以比油耗、最高爆发压力为约束条件，针对满足功率、扭矩、燃烧噪声和油耗指标进行多目标优化设计。 |
