As the heavy-duty combustion engine development goes towards lower rotational speeds and higher cylinder pressures, the torsional vibrations increase. There is therefore a need to identify and study new types of vibration absorbers that can reduce the level of torsional vibrations transmitted from the engine to the gearbox. In this work, the concept of a dual-mass flywheel combined with a tuned vibration absorber is analysed. The tuned vibration absorber efficiently reduces the vibration amplitudes for engine load frequencies near the tuning frequency, but it also introduces an additional resonance into the system. By placing the tuned vibration absorber on an intermediate flange between the two dual-mass flywheels, the introduced resonance frequency will be lower than the tuning frequency and a resonance in operating engine speed range can be avoided. Numerical simulations are used to show how the torsional vibration amplitudes in a heavy-duty truck powertrain are affected by the tuned vibration absorber and how the different parameters of the tuned vibration absorber and the dual-mass flywheel affect the torsional vibrations and the resonance frequencies.

中文翻译：

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带有调谐减振器的双质量飞轮，适用于重型卡车动力系统

随着重型内燃机向更低转速和更高气缸压力的方向发展，扭转振动增加。因此，需要识别和研究能够降低从发动机传递到变速箱的扭转振动水平的新型减振器。在这项工作中，分析了双质量飞轮与调谐减振器相结合的概念。调谐减振器有效地降低了接近调谐频率的发动机负载频率的振动幅度，但它也向系统中引入了额外的共振。通过将调谐减振器放置在两个双质量飞轮之间的中间法兰上，引入的共振频率将低于调谐频率，并且可以避免在运行发动机速度范围内的共振。数值模拟用于显示重型卡车动力系统中的扭振振幅如何受到调谐减振器的影响，以及调谐减振器和双质量飞轮的不同参数如何影响扭转振动和共振频率。