Control device and control method for internal combustion engine
AssigneeToyota Jidosha Kabushiki Kaisha
InventorMasahiro Ito
Life of this patent
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Abstract
An electronic control unit (100), which serves as a control device for an internal combustion engine, executes feedback control for controlling the torque of an internal combustion engine (10) so as to coincide the rate of decrease in engine rotational speed with a target rate of decrease in the engine rotational speed. The electronic control unit (100) calculates a required torque that is a torque required to keep the engine rotational speed at a constant rotational speed, and increases a feedback gain in the feedback control as the calculated required torque increases.
Claims8
A control device for an internal combustion engine, comprising:
- a control unit that executes feedback control for controlling a torque of the internal combustion engine so as to coincide a rate of decrease in an engine rotational speed with a target rate of decrease in the engine rotational speed, wherein
- the control unit calculates a required torque that is a torque required to keep the engine rotational speed at a constant rotational speed,
- the control unit increases a feedback gain in the feedback control as the calculated required torque increases,
- the control unit sets a target rotational speed, at which the engine rotational speed is kept constant, as the engine rotational speed that is acquired in order to calculate the required torque, and
- the control unit calculates the required torque on the basis of the set target rotational speed, an engine temperature, and a signal indicating an operating state of an auxiliary that is driven using an output of the internal combustion engine.
A control method for an internal combustion engine, which executes feedback control for controlling a torque of the internal combustion engine so as to coincide a rate of decrease in an engine rotational speed with a target rate of decrease in the engine rotational speed, comprising:
- calculating a required torque that is a torque required to keep the engine rotational speed at a constant rotational speed;
- and
- increasing a feedback gain in the feedback control as the calculated required torque increases,
- wherein the calculating comprises setting a target rotational speed, at which the engine rotational speed is kept constant, as the engine rotational speed that is acquired in order to calculate the required torque, and
- the required torque is calculated on the basis of the set target rotational speed, an engine temperature, and a signal indicating an operating state of an auxiliary that is driven using an output of the internal combustion engine.
Dependencies are inferred from the claim text.