| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To appropriately set an initial stop position of an electric motor operating a frictional multi-disc clutch of a differential gear with a differential limiting mechanism by eliminating influence of temperature change. <P>SOLUTION: Since target motor rotation angle corresponding to initial stop position is changed based on a temperature dependent term calculated from actuator oil temperature T3, internal combustion engine oil temperature T2, and internal combustion engine water temperature T1 when the initial stop position (zero point) of the electric motor operating the frictional multi-disc clutch making the differential gear show a differential limiting function, fluctuation of clearance of the friction multiple disc clutch is compensated and appropriate initial stop position (zero point) of the electric motor is set even if the clearance fluctuates due to expansion and contraction of components accompanying temperature change. Consequently, drop of engagement response due to increase of clearance of the frictional multi-disc clutch and drag due to reduction of clearance are prevented. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
