| 摘要 |
PROBLEM TO BE SOLVED: To supply a sufficient lubricant flow quantity to frictional elements and prevent a reduction of durability of frictional elements caused by over-heating of the frictional elements due to a lack of lubricant flow quantity even under a state that a select position is changed over between a backing position and an advance position and a rotational speed difference at frictional elements cannot be calculated accurately.SOLUTION: An integration controller 50 detects output rotational speeds of advance frictional element and backing frictional element, calculates the rotational speed difference at the frictional elements corresponding to a selected position on the basis of values in which positive and negative detected values of the output rotational speeds are reversed just after a changing-over is carried out between the advance position and the backing position, calculates a required lubricant flow quantity required for lubricating the frictional element corresponding to the selected position on the basis of the rotational speed difference, and supplies the required lubricant flow quantity to the frictional element corresponding to the selected position. |
