The model to control intermittent diesel exhaust noise was established and an elementary design was proposed.
对柴油机的排气噪声进行了有源消声的初步设计；
The low frequency exhaust noise of a diesel(4 85), its generation, frequency characteristics and influencing factors have been studied through theoretic calculation, analysis and experiment.
针对柴油机（4 85 ）低频排气噪声，对其产生机理、规律及其影响因素等作了理论计算、分析及实验。
During the recovery of heat energy from the cylinder exhaust of diesel engines, the installation can greatly reduce noise pollution and mostly eliminate exhaust lampblack.
当它对柴油发动机汽缸排气余热回收时，大大地降低了噪声，且排气中油烟亦基本消除。
Based on the tests for emulsified diesel oil on a diesel engine, this paper presents test research on economical results, startability, vibration, noise, exhaust gas constituent and smoke.
本文以试验研究为基础，对柴油机燃用乳化油的节能效果，以及对柴油机起动性能、振动、噪声、排气成份和烟度等做了试验研究，并对乳化油生成及节能机理进行了论述。
The advantages and disadvantages of two major types of diesel engines, in the aspects of exhaust gas emission, economy in use and noise level and the like, are discussed.
本文从废气排放、使用经济性以及噪音等方面对比了两类柴油机的优劣。
ZS195 diesel engine fueled with high proportion DME exhaust contains no smoke, noise also decreases, and the NOX exhaust obviously decreases.
燃用高比例二甲醚燃料，可使发动机在全负荷范围内达到无烟排放，NO_x有较大幅度下降，噪声减小。
ZS195 diesel engine fueled with high proportion DME exhaust contains no smoke, noise also decreases, and the NOX exhaust obviously decreases.
燃用高比例二甲醚燃料，可使发动机在全负荷范围内达到无烟排放，NO_x有较大幅度下降，噪声减小。
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