Abstract
For effectively suppressing idling power loss of hydrodynamic retarder, an innovative iris mechanism scheme is designed based on structural characteristics of iris aperture with its principle of idling loss suppression that blocked the circulation flow path. The full flow path models of hydrodynamic retarder with and without the iris mechanism working are established and through the numerical simulation at different rotational speeds, the torque and power loss characteristics are obtained, as well as internal flow field flow and pressure distributions. Simulation results show that the iris mechanism can effectively block the circulating flow between rotor and stator to reduce energy loss. When the speed of the rotor is set as 4 000 r/min, and the iris mechanism is fully effective, the idling power loss value is 0.8 kW, which is reduced to 1.3% compared to the value of 61.6 kW when the iris mechanism does not work and reduced to 5.8% compared to the value of 15.8 kW when the existing spoiler is fully effective. The retarder bench test verifies that the iris mechanism can significantly suppress the idling loss and can greatly improve the power utilization of the vehicle.
| Translated title of the contribution | Study on an Iris Idling Power Loss Suppression Method in Hydrodynamic Retarder |
|---|---|
| Original language | Chinese (Traditional) |
| Pages (from-to) | 237-245 |
| Number of pages | 9 |
| Journal | Jixie Gongcheng Xuebao/Chinese Journal of Mechanical Engineering |
| Volume | 56 |
| Issue number | 20 |
| DOIs | |
| Publication status | Published - 20 Oct 2020 |