摘要:
An ECU executes a program sets a driver requested torque based on the accelerator operation amount, and sets a torque-boost amount so that the torque-boost amount increases as the driver requested torque increases, until the driver requested torque exceeds a predetermined torque T(0). When the driver requested torque exceeds the predetermined torque T(0), the torque-boost amount decreases as the driver requested torque increases. However, the torque obtained by adding the torque-boost amount to the driver requested torque increases as the accelerator operation amount increases.
摘要:
A gear shift controlling apparatus of an automatic transmission for a vehicle has a synchronization-time engagement pressure correcting device that, before synchronization of gear-shifting, makes an increase correction of an engagement pressure of the disengaged-side engaging element by a first prescribed amount, to cause an input shaft rotational speed immediately before synchronizing of the automatic transmission to approach a rotational speed calculated by multiplying an output shaft rotational speed by a gear ratio of a gear after gear-shifting the automatic transmission.
摘要:
A control apparatus for a vehicle includes an engagement-pressure control portion that increases the engagement pressure to a predetermined pressure for a friction engagement element to be engaged during a torque phase of an upshift in an automatic transmission. When the inertia phase starts, the control apparatus increases the engagement pressure at a predetermined gradient. The control apparatus also includes a torque-boost control portion that executes a torque-boost control that boosts the torque output from the power source during the torque phase; and a torque-boost permission portion that determines whether the torque-boost control should be restricted. When it is determined that the torque-boost control should not be restricted, the predetermined pressure is set to a greater value, and the predetermined gradient is set to a smaller value than when it is determined that the torque-boost control should be restricted.
摘要:
A control apparatus for a vehicle includes an engagement-pressure control portion that increases the engagement pressure to a predetermined pressure for a friction engagement element to be engaged during a torque phase of an upshift in an automatic transmission. When the inertia phase starts, the control apparatus increases the engagement pressure at a predetermined gradient. The control apparatus also includes a torque-boost control portion that executes a torque-boost control that boosts the torque output from the power source during the torque phase; and a torque-boost permission portion that determines whether the torque-boost control should be restricted. When it is determined that the torque-boost control should not be restricted, the predetermined pressure is set to a greater value, and the predetermined gradient is set to a smaller value than when it is determined that the torque-boost control should be restricted.
摘要:
An automatic transmission controller for a vehicle has an insufficient gear shifting time determining device that determines whether a gear shifting time for shifting performed by disengagement of two engaging elements and engagement of two engaging elements is insufficient; and a double engage/disengage prohibiting device that prohibits the gear shift after the disengagement of two engaging elements and engagement of two engaging elements when the insufficient shifting time determining device determines that the gear shifting time for shifting after the disengagement of two engaging elements and engagement of two engaging elements is insufficient.
摘要:
When it is determined that the torque output from a power source is being automatically controlled, an ECU prohibits torque-boosting control of the power source during the torque phase when up-shifting, and performs up-shifting without performing torque-boosting control. In performing torque-boosting control, the driver demanded torque in response to the accelerator operation amount is used as the reference in setting amount of torque demanded from the power source.
摘要:
When shifting an automatic transmission into a higher gear, it is determined that an inertia phase has started when an input rotation speed of the automatic transmission has started to decrease. Here, if throttle opening amount reduction control is being performed to reduce the output torque of the engine when it is determined that the inertia phase has started, it is highly likely that that determination is erroneous because that control causes the input rotation speed of the automatic transmission (i.e., the engine speed) to decrease. When it is highly likely that the determination that the inertia phase has started is erroneous in this way, learning of a hydraulic pressure command value is prohibited. As a result, erroneous learning of the hydraulic pressure command value can be prevented.
摘要:
An engagement-pressure control portion and a first torque decrease control portion are provided. The engagement-pressure control portion controls an engagement pressure for a friction engagement element to be engaged when an automatic transmission upshifts so that the engagement pressure increases to a standby pressure at which an inertia phase does not start on the condition that torque output from a power source is equal to a first predetermined value, and then the engagement pressure is maintained at the standby pressure. The first torque decrease control portion controls the torque output from the power source so that the torque gradually decreases from the first predetermined value after the engagement pressure for the friction engagement element is maintained at the standby pressure, and a predetermined condition is satisfied.
摘要:
An engagement-pressure control portion and a first torque decrease control portion are provided. The engagement-pressure control portion controls an engagement pressure for a friction engagement element to be engaged when an automatic transmission upshifts so that the engagement pressure increases to a standby pressure at which an inertia phase does not start on the condition that torque output from a power source is equal to a first predetermined value, and then the engagement pressure is maintained at the standby pressure. The first torque decrease control portion controls the torque output from the power source so that the torque gradually decreases from the first predetermined value after the engagement pressure for the friction engagement element is maintained at the standby pressure, and a predetermined condition is satisfied.
摘要:
A control apparatus includes a torque-boost control portion that boosts torque output from the engine, and corrects the operation amount of an adjustment mechanism that adjusts the amount of air taken into the engine to increase the amount of air during a torque phase when the automatic transmission upshifts; and an inertia-phase determination portion that determines whether an inertia phase has started. The torque-boost control portion includes a torque-boost end control portion that executes a torque-boost end control that gradually decreases a correction amount, by which the operation amount is corrected, to zero when the inertia-phase determination portion determines that the inertia phase has started.