| 摘要 |
<p>An lubricating oil from an oil pump (354) that is driven by rotation of an engine (100) is supplied as a refrigerant to a rotor (214) of an assist motor (216) via a pressure valve (240A). The pressure valve (240A) is configured to be closed when the pressure of the lubricating oil is less than a predetermined value, and to open when the pressure of the lubricating oil is greater than or equal to the predetermined value. As a result, when the rotor (214) is in low need for cooling down because the temperature rise of the rotor (214) is small although the rotation speed of the rotor (214) rises, that is, when the engine (100) is operating at a low rotation speed with a high load, the supply of lubricating oil to the rotor (214) is reduced or stopped.</p> |
