| 摘要 |
A system for carrying out shift control of an automatic transmission in accordance with a rotational speed of an input shaft thereof during shifting comprises calculating an input torque coefficient in accordance with torque of the engine detected and a rate of time change calculated, converting the input torque coefficient calculated into a velocity ratio, calculating a rotational speed of the input shaft of the automatic transmission in accordance with the rotational speed of the engine detected and the velocity ratio, and carrying out torque-down of the engine in accordance with the rotational speed of the input shaft calculated.
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