| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a control device of a lock-up clutch for a vehicle that inhibits reduction of durability of a friction material of the lock-up clutch and improves fuel consumption by enlarging a slip control region. <P>SOLUTION: A surface temperature estimator 112 always estimates a surface temperature Tsf of the friction material 33 of the lock-up clutch 32 under each of conditions: when a lock-up clutch is released; when a slip of the lock-up clutch is controlled; and when the lock-up clutch is fully engaged. A lock-up controller 109 controls an operation state of the lock-up clutch 32 on the basis of the surface temperature Tsf of the friction material 33 always estimated under each of the above conditions. As a result, the surface temperature Tsf of the friction material 33 is always estimated not only when the slip of the lock-up clutch is controlled but when the lock-up clutch 32 is released and is fully engaged. Accordingly, a lock-up is optimally controlled based on the surface temperature Tsf of the friction material 33 always estimated. <P>COPYRIGHT: (C)2012,JPO&INPIT |
