| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a vehicle automatic transmission preventing a so-called rattling noise from being generated from a power transmission system of a vehicle. <P>SOLUTION: It is determined whether a rattling noise is generated, from a vehicle running condition or the like. When the generation of the rattling noise is foreseen, a fine sliding control of the automatic transmission is changed to a fine sliding control for countermeasures against the rattling noise. The control makes a target sliding amount larger than that in an ordinary fine sliding control. Hence, when the control is made, the sliding amount of a clutch is increased, and a fluctuation of rotating speed of an engine is not transmitted to the power transmission system. The generation of the rattling noise by the power transmission system is reduced thereby. <P>COPYRIGHT: (C)2012,JPO&INPIT |
