The research results show that the engine combustion noise can be reduced by reducing the combustion pressure oscillation in combustion chamber.
研究结果表明，通过减小缸内压力振荡可降低直喷式柴油机的燃烧噪声。
The influential factors of noise for dimethyl ether engine are studied and analyzed through experiments by using method of combustion noise and effective solutions for noise reduction are found out.
选择了燃烧噪声的研究方法，对二甲醚发动机噪声的影响因素进行了试验研究和分析，明确了降低噪声的有效途径。
The research results show that the engine combustion noise can be reduced by reducing the combustion pressure oscillation inc…
研究结果表明，通过减小缸内压力振荡可降低直喷式柴油机的燃烧噪声。
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