| 摘要 |
<p>PROBLEM TO BE SOLVED: To bring the rotational speed synchronizing timing of an automatic transmission close to the engagement start time of an engagement side hydraulic friction engaging device at the time of downshift in a hydraulic controller for a vehicular automatic transmission where the orifice of an fluid passage for supplying a hydraulic fluid to the engagement side hydraulic friction engaging device is switched at the time of downshift. SOLUTION: When an engagement lag discriminating means 310 discriminates that the engagement of a clutch is late for the rotational synchronizing point of an automatic transmission 14 in 4th-3rd downshift, the output torque of a vehicular engine 10 is decreased by a prescribed amount within the 4th-3rd downshift by an engine output decreasing means 312, thus it is possible to suppress, preferably, the generation of temporary racing of a turbine rotational speed Nr or shifting shock caused by the engagement start of the clutch late for the rotational speed synchronizing timing of an automatic transmission 14.</p> |
