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摘要
In order to study the dynamic characteristics of the twin-turbo torque converter with adjustable guide vane, the full flow path model of each impeller of the torque converter is established.The sliding grid method in the multi-flow region coupling algorithm is used to realize the real-time transmission of the flow parameters between the impellers.The dynamic mesh technique is used to study the influence of the guide vane adjustment speed on the output characteristics, and the dynamic characteristics of the transient flow of the torque converter are calculated.The results show that the greater the speed of the guide vane, the larger the torque required for the guide vane adjustment, and the greater the pressure wave.The hydraulic transmission control system with the adjustable guide vane has no overshoot under the step input, and the dynamic response time varies with the input signal, which is about 8-9 seconds.When the change of the opening degree is small, the response time is relatively high, and vice versa.The hydraulic transmission control system with adjustable guide vane has better control ability for constant torque load, and the dynamic response time is within 2 seconds. ? 2020, Editorial Department of "Journal of Engineering for Thermal Energy and Power". All right reserved.
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