| 摘要 |
<p>PURPOSE:To reduce the shock on speed change by properly controlling the clutch pressure of an automatic speed change gear so that the engine revolution speed varying time is always set to the optimum state when speed change is performed. CONSTITUTION:A clutch-pressure instruction-value generating means 101 generates the instruction value of the clutch pressure of an automatic speed-change gear corresponding to the parameters related to the engine output. A correction- amount determining means 104 determines the correction amount of the instruction value of the clutch pressure on the basis of the engine revolution speed varying time, and said correction amount is memorized into a correction-amount memory means 105. A correcting means 106 corrects the instruction value of the clutch pressure according to the correction amount which is determined and memorized when the speed-change instruction reaches in the preceding time, each time the speed-change instruction reaches. The clutch pressure of the automatic speed change gear is controlled by giving the clutch-pressure instruction- value into a clutch-pressure control means 107 after the above-described correction.</p> |
