| 摘要 |
<p>PURPOSE:To make a friction element conduct lost stroke in the shortest time within a range in which clutching shocks do not occur by constituting a controller to learn precharge wave forms. CONSTITUTION:A precharging means precharges working pressure for a friction element with a precharge wave form comprising an initial pressure wave form supplying the high pressure of nearly maximum pressure to the friction element for a specified time and a post pressure wave form supplying lamp controlling pressure which varies with specified time sequence inclination to the friction element after the initial pressure was supplied combined and makes the friction element loss-stroke. A precharge wave form changing means changes the precharge wave form by correcting the wave form balance of the initial pressure wave form and post pressure wave form so that the activation result of the friction element caused by this precharge may accord with the request regarding scheduled friction element activation conditions. Therefore, the lost stroke of the friction element, for example, can be done for the shortest time within a range clutching shock does not occur.</p> |
