| 摘要 |
PURPOSE:To make improvements in driving comfortableness and silentness at idling, by constituting a dynamic spring constant so as to make it smaller at the time of torque converter drag reducing action than at the time of nonaction. CONSTITUTION:An electronic control unit 60 processes various information data 62-67 of throttle opening, etc., with the specified procedure, and controls the current-energization of a vibro-isolator rubber device 70 for a solenoid coil 90 by judgment of whether an engine is in idle running or not as well as it is in drag reducing action or not, controlling a valve element 86 from its full-close position to the full-open one, whereby a dynamic spring constant of the vibro-isolator rubber 70 during converter drag reducing action is decreased. On the other hand, the control unit 60 judges whether necessity of the drag reducing action, and control current-energization to a solenoid 37 according to each case, whereby it performs the drag reducing control of a forward clutch 28. With this constitution, a feeling of driving comfortableness at the time of idle running is improved. |
