排气噪声

为了深入考察消声器结构参数对排气噪声频谱的影响，自主开发设计了噪声数字信号采集系统和1／3倍频程FIR数字滤波器。

In order to deeply research the effect of structural parameters on the spectrum of exhaust noise , the author designs a system to sample the exhaust noise and 1 / 3 FIR octave-band filters to calculate the spectrum of the sampling-data .

研究了飞机APU排气噪声的降噪设计，建立了排气管道的微穿孔板吸声结构几何参数、气流参数等与吸声特性参数之间的关联关系，发展了排气管道微穿孔板吸声结构的理论设计方法。

Based on this theoretical formula , a micro perforated absorber used to reduce ex-haust noise of flow duct was designed and was used in the noise reduction for the airplane MA60 APU .

带有气动装置的机器正常工作时，气动阀产生的间歇性排气噪声的A声级高达110dB。

When the machine with the pneumatic assembly runs normally , the pneumatic-Valves create the intermittence exhaust noise with A-sound-level of 110dB ( A ) .

本文介绍了MTU16V396柴油机排气噪声的实船测试方法和谱分析结果，并对管内压力波和管口辐射噪声间的关系及其谱特性进行了初步分析。

In this paper , a measurement scheme of exhaust noise from a marine diesel engine MTU16V396 under way is briefly described and some spectrum analysis results are given .

通过试验比较，表明采用微穿孔板消声器降低MA60飞机APU排气噪声的效果是非常理想的。

Considering the measured spectrum and APU equipment , a microporous muffler is used for reducting of APU exhaust noise . The measured results show that the effect of microporous muffler for noise reduction of APU exhaust is very satisfactory .

通过对铃木AX-100摩托车发动机排气噪声的有源消声实验表明，提出的发动机排气有源消声系统能够有效消除噪声源中的窄带成分，提高系统整体降噪效果。

A test on SUZUKI AX-100 motorcycle engine exhaust noise by active noise control ( ANC ) was carried out . The results showed that the proposed ANC system could greatly eliminate the narrowband components of the noise source , and improve the whole reduction in noise .

分析了这些信号与发动机排气噪声的相关性。

The correlation between vibration signal and noise signal is studied .

基于排气噪声的柴油机失火故障诊断

Fault Diagnosis of Misfire in Diesel Engines Based on Exhaust Noise

一台高强化柴油机排气噪声有源控制实验研究

Adaptive Active Exhaust Noise Control of a High Intensity Diesel Engine

基于排气噪声双谱分析的坦克柴油机失火检测

Misfire Detection for Tank Diesel Engine Based on Exhaust Noise Bispectrum Analysis

利用波形合成技术对柴油机排气噪声实行有源控制的研究

Study of Active Control to Diesel Exhaust Noise with Waveform Composition Technique

基于排气噪声的柴油机各缸工作不均匀故障诊断

Fault Diagnosis of Cylinder-to-Cylinder Nonuniformity in Diesel Engine Based on Exhaust Noise

柴油机排气噪声频率和抗性消声器结构的分析

Analyzing the noise frequency of diesel exhaust and the structure of muffler

发动机排气噪声有源控制技术的研究与应用

Study and Application of Active Sound Attenuation to Exhaust Noise from Engines

周期间隙性排气噪声滤波消声器的试验研究

Testing research on muffler for filtering period interval exhaust noise

车用发动机排气噪声有源主动控制管道模拟研究

The Pipeline Simulation Study on Active Exhaust Noise Control of Vehicle Engine

空气锤排气噪声治理

Bringing the exhaust noise of air hammers under control

空气锤进排气噪声特性及其控制研究

Characteristics and control of air admission and exhaust noise of air-operated power hammer

排气噪声在汽车产生的所有噪声中比重最大。

Exhaust noise takes the biggest part in noise generated by the car .

发动机排气噪声自适应有源消声系统的设计与试验研究

Design and Experimental Study of Adaptive Active Control System for Engine Exhaust Noise

地沟式消声坑槽降低柴油机排气噪声的研究

To Reduce Exhaust Noise from Diesel Engine by Using Ditch-Type Noise Silence Trough

用正交试验设计的方法研究柴油机排气噪声及其影响参数的关系

The Relationship Between Engine Exhaust Noise and the Influenced Parameters by Orthogonal Analysis

间歇性排气噪声源的特性及消声器结构的研究

Research on properties of intermittent exhaust noise source and design of a muffler

降低发动机排气噪声的新型材料&蜂窝陶瓷

A New Material of Reducing Engine Exhaust Noise-Honeycomb-like Ceramics

间歇性排气噪声产生机理及其特性的研究

Generation on Mechanism and Characteristics of Intermittent Exhaust Noise

单缸内燃机排气噪声的声功率

Sound Power of Exhaust Noise of Single Cylinder Engines

柴油机排气噪声的产生机理及排气消声器设计

The Generation Mechanism of Diesel Exhaust Noises and the Design of the Exhaust Muffler

在频域上给出了排气噪声声功率的公式。

The formulas for sound power of exhaust noise in frequency domains are given .

这些方面，充分展现了汽车排气噪声控制的前景。

Based on these descriptions the prospects in automotive exhaust noise control are revealed .

摆盘机水下排气噪声的研究

A study on the submerged exhaust noise generated from an oscillating disk heat engine