| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a lubrication control device that can evade deterioration of the running stability caused by generation of driving force difference due to the difference of the stirring resistance between right and left in-wheel motors in transition from the low vehicle speed to the high vehicle speed. <P>SOLUTION: In a low vehicle speed range of less than the set vehicle speed VSP1 (VSP<VSP1) in which the oil stirring resistance in the in-wheel motor case does not exceed an acceptable level, noise is prevented by controlling the rotation speed including stop of an oil pump by gradually increasing the oil pumping quantity Q from the oil pump according to the increase of the vehicle speed. When the vehicle speed VSP has reached the set vehicle speed VSP1, and transiting to the high vehicle speed range (VSP≥VSP1) in which the oil stirring resistance exceeds the acceptable level, driving control of the oil pump is carried out so that the oil pumping quantity Q becomes the prescribed quantity Qconst in which the oil levels of the right and left in wheel-motor cases are the same. Therefore, when transiting to the high vehicle speed range (VSP≥VSP1), the right and left oil levels are the same, and the deterioration of the travel stability can be avoided without causing the difference in driving force between the right and left wheels. <P>COPYRIGHT: (C)2013,JPO&INPIT</p> |
