| 摘要 |
<p>When the temperature is low, a low-temperature mode is selected, and the heat mode function (25a) of a PCU (25) operates. Essentially, the PCU (25) sets the energy recovery ratio of the capacitor (23) to the highest value or higher (for example, assist motor (22): capacitor (23)=2:8) of the energy recovery ratio of the capacitor (23) during normal mode. Compared to normal mode, the energy for charging the capacitor (23) increases, and the capacitor (23) generates heat, causing the solution temperature of the cooling medium to rise. This causes the cooling medium to become less viscous. As a result, a simple configuration makes is possible to prevent a decline in the energy efficiency of a cooling system installed in a hybrid work machine when the temperature is low.</p> |
