Engine power controlling apparatus and method
AssigneeToyota Jidosha Kabushiki Kaisha
InventorMasahiro Ito
Life of this patent
Estimating the term…
Abstract
Torque generated by the engine is obtained as engine generated torque TQe. Load torque applied to the engine is obtained as estimated engine load torque TQf. The difference between the engine generated torque TQe and the estimated engine load torque TQf is computed as estimated torque balance TQx. Torque that represents a change of the engine speed NE is computed as acceleration computation torque TQy. The difference between the estimated torque balance TQx and the acceleration computation torque TQy is computed as an estimated torque deviation TQc. The engine power is corrected based on the estimated torque deviation TQc. As a result, the responsiveness of the engine power control is improved without performing modeling as in the modern control.
Claims10
An apparatus for controlling power of an engine that is mounted on a vehicle having a powertrain coupled to the engine, the apparatus comprising:
- a first computation section for computing a first torque balance that represents a difference between engine generated torque, which is torque generated by the engine, and estimated engine load torque, which is load torque applied to the engine;
- a second computation section for computing a second torque balance that represents a change of the engine speed, wherein the second computation section computes the second torque balance based on the change of the engine speed over a predetermined period, the moment of inertia of the engine, and the moment of inertia of the powertrain;
- a third computation section for computing a difference between the first torque balance and the second torque balance as a torque balance difference;
- and
- a correction section for correcting the engine power based on the torque balance difference.
A method for controlling power of an engine that is mounted on a vehicle having a powertrain coupled to the engine, the method comprising:
- obtaining engine generated torque that is torque generated by the engine;
- obtaining estimated engine load torque that is load torque applied to the engine;
- computing a first torque balance that represents a difference between the engine generated torque and the estimated engine load torque;
- computing a second torque balance that represents a change of the engine speed, wherein the second torque balance is computed based on the change of the engine speed over a predetermined period, the moment of inertia of the engine, and the moment of inertia of the powertrain;
- computing a difference between the first torque balance and the second torque balance as a torque balance difference;
- and
- correcting the engine power based on the torque balance difference.
Dependencies are inferred from the claim text.