| 摘要 |
PROBLEM TO BE SOLVED: To provide the method for neutral slip shift control at stop in first gear stage of an automatic controller capable of reducing a load to a torque converter to reduce the noise and vibration, enhancing ride comfort, and improving fuel economy by controlling an automatic transmission in neutral at the stop in a first gear stage shift state during forward driving. SOLUTION: In the driving process of a vehicle, the following steps are sequentially conducted; a step or judging whether vehicle speed is at a low speed in a constant reference value or less or not; a step for judging whether the present grade is in a reference value or less or not with a TCU; a step for judging whether a throttle opening angle is 0% or not; a step for judging whether a transmission sate of the vehicle is at D, 2 range, first gear stage or not; a step for judging whether oil temperature is in a reference value or higher or not; a step for judging whether the revolution of an engine is within a range of constant reference or not; a step for judging whether the revolution of output of the automatic transmission is 0 rpm or not; a step for judging whether the revolution of a turbine is 0 rpm or not; a step for judging whether a brake from a brake switch is in an on state or not; and a step for exercising neutral control. |
