Vehicle control apparatus
AssigneeDenso Corporation
InventorToshihiko Takeda
Life of this patent
Estimating the term…
Abstract
A vehicle control apparatus for a vehicle causes several control target instruments to operate in cooperation, thereby controlling a behavior of the vehicle so as to approach a target behavior of the vehicle. In this case, target behaviors of several control target instruments are estimated. When a separation arises in a certain control target instrument between an actual behavior and the target behavior, operations of other control target instruments are changed according to the magnitude of the separation in the certain control target instrument. Thereby, even if an anomaly arises in one of the control target instruments, the behavior of the vehicle can be brought close to the target behavior.
Claims10
A vehicle control apparatus for a vehicle that is a hybrid vehicle having an engine and an electric motor as a travel driving source, the vehicle control apparatus comprising:
- an engine control unit configured to control an operation of the engine;
- a motor control unit configured to control an operation of the motor;
- a hybrid vehicle control unit configured to:
- specify target torques of the engine and the electric motor to achieve a target vehicle behavior of the hybrid vehicle by causing the engine and the electric motor to operate in cooperation, and
- cause the engine control unit and the motor control unit to operate the engine and the electric motor based on the target torques specified, and
- a vehicle behavior estimation section configured to detect an actual vehicle behavior of the hybrid vehicle and determine whether a first separation is exhibited in the hybrid vehicle between the target vehicle behavior and the actual vehicle behavior;
- and
- a control target instrument estimation section configured to:
- estimate an estimated behavior of each of the engine and the electric motor being operated in cooperation based on the target torques specified,
- detect an actual behavior of each of the engine and the electric motor, and
- determine whether a second separation is exhibited between the estimated behavior and the actual behavior in each of the engine and the electric motor,
- wherein
- when (i) the first separation is determined to be exhibited in the hybrid vehicle between the target vehicle behavior and the actual vehicle behavior, and, simultaneously, (ii) the second separation is determined to be exhibited in one of the engine or the electric motor between the estimated behavior and the actual behavior, the hybrid vehicle control unit is further configured to:
- calculate anew a division of necessary torque between the engine and the electric motor to permit the one of the engine or the electric motor exhibiting the second separation to be assisted by the other one of the engine or the electric motor, and
- instruct the engine control unit and the motor control unit to operate the engine and the electric motor, respectively, based on the division of necessary torque that is calculated anew.
A vehicle control apparatus for a hybrid vehicle having an engine and an electric motor as a travel driving source, the hybrid vehicle control apparatus comprising:
- an engine control unit configured to control an operation of the engine;
- a motor control unit configured to control an operation of the motor;
- and
- a hybrid vehicle control unit configured to:
- specify target torques of the engine and the electric motor to achieve a target vehicle behavior of the hybrid vehicle by causing the engine and the electric motor to operate in cooperation,
- cause the engine control unit and the motor control unit to operate the engine and the electric motor based on the target torques specified,
- detect an actual vehicle behavior of the hybrid vehicle and determine whether a first separation is exhibited in the hybrid vehicle between the target vehicle behavior and the actual vehicle behavior, and
- detect an actual torque of each of the engine and the electric motor and determine whether a second separation is exhibited between the target torque and the actual torque in the engine or the electric motor,
- wherein
- when (i) the first separation is determined to be exhibited in the hybrid vehicle between the target vehicle behavior and the actual vehicle behavior, and, simultaneously, (ii) the second separation is determined to be exhibited in one of the engine or the electric motor between the target torque and the actual torque, the hybrid vehicle control unit is further configured to:
- calculate anew a division of necessary torque between the engine and the electric motor to permit the one of the engine or the electric motor exhibiting the second separation to be assisted by the other one of the engine or the electric motor, and
- instruct the engine control unit and the motor control unit to operate the engine and the electric motor, respectively, based on the division of necessary torque that is calculated anew.
Dependencies are inferred from the claim text.