摘要 现代涡轮增压内燃机会在曲轴处产生高波动扭矩。它们会导致曲轴扭转振动传递到变速箱和辅助发动机系统。为了减少曲轴扭转振动，开发了一种用于补偿波动的发动机扭矩的运动驱动飞轮 (KDF)。它包括飞轮，该飞轮通过非均匀传动机构连接到曲轴。该机构的运动学传递行为以惯性飞轮扭矩补偿波动的发动机扭矩的至少一个谐波的方式进行合成。该机构的不均匀程度必须适应发动机的实际速度和负载。提出并分析了一种具有摆线曲柄输入和曲柄长度可调的新型齿轮双曲柄机构。参数合成是通过简化的机械模型实现的，该模型计算给定发动机扭矩所需的传递函数。配备 KDF 的三缸发动机的多体仿真展示了该系统的功效。功能原型已经建立并在电动测试台上进行测试。测量证实了 KDF 的模拟行为，从而证明了该设备的潜力。配备 KDF 的三缸发动机的多体仿真展示了该系统的功效。功能原型已经建立并在电动测试台上进行测试。测量证实了 KDF 的模拟行为，从而证明了该设备的潜力。配备 KDF 的三缸发动机的多体仿真展示了该系统的功效。功能原型已经建立并在电动测试台上进行测试。测量证实了 KDF 的模拟行为，从而证明了该设备的潜力。
Abstract Modern turbocharged combustion engines induce high fluctuating torques at the crankshaft. They result in torsional crankshaft vibrations that are transferred both to the gearbox and the auxiliary engine systems. To reduce the torsional crankshaft vibrations, a kinematically driven flywheel (KDF) for compensating fluctuating engine torques has been developed. It comprises a flywheel that is coupled to the crankshaft by means of a non-uniformly transmitting mechanism. The kinematical transfer behaviour of the mechanism is synthesised in such a manner that the inertial flywheel torque compensates at least one harmonic of the fluctuating engine torque. The degree of non-uniformity of the mechanism has to be adapted to the actual speed and load of the engine. A novel geared double-crank mechanism with cycloidal-crank input and adjustable crank length is proposed and analysed. Parameter synthesis is achieved by means of a simplified mechanical model that calculates the required transfer function for a given engine torque. A multibody simulation of a three-cylinder engine equipped with the KDF demonstrates the efficacy of the system. A functional prototype has been built up and tested on an electrically driven test stand. Measurements confirm the simulated behaviour of the KDF thus demonstrating the potential of the device.
