| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To reduce gear-change shocks in a stepped automatic gear-change mechanism of a car. <P>SOLUTION: A car control device comprises an input torque operating unit 131 to obtain the input torque Tt of a stepped automatic gear-change mechanism from the engine speed Ne and the turbine speed Nt, a gear-change start recognizing unit 134 to recognize the actual mechanical gear-change start timing of the stepped automatic gear-change mechanism according to the change of the input torque Tt, a line pressure correction calculating unit 142 to calculate the line pressure correctionΔPL during the gear change when the gear-change start is recognized, a standard line pressure calculating unit 143 to calculate the standard line pressure PL, and a line pressure calculating unit 144 which adds the line pressure correctionΔPL to the standard line pressure PL, and outputs the value to a hydraulic pressure control valve 52 of a hydraulic circuit of the stepped automatic gear-change mechanism. <P>COPYRIGHT: (C)2004,JPO</p> |
