Power Output Apparatus, Motor Vehicle Equipped With Power Output Apparatus, And Control Method Of Power Output Apparatus
First Claim
1. A power output apparatus that outputs power to a driveshaft, said power output apparatus comprising:
- an internal combustion engine that has an output shaft and outputs power;
an electric power-mechanical power input output mechanism that is connected with the output shaft of the internal combustion engine and with the driveshaft and outputs at least part of the output power of the internal combustion engine to the driveshaft through input and output of electric power and mechanical power;
a motor that inputs and outputs power from and to the driveshaft;
an accumulator unit that transmits electric power to and from both the electric power-mechanical power input output mechanism and the motor;
a driving force demand setting unit that sets a driving force demand to be output to the driveshaft;
a target operation state setting module that, upon no satisfaction of an explosive combustion continuation condition for keeping explosive combustion of a fuel in the internal combustion engine, enables intermittent operation of the internal combustion engine and sets a target operation state of the internal combustion engine based on the set driving force demand, while upon satisfaction of the explosive combustion continuation condition, continuously keeping operation of the internal combustion engine and setting the target operation state of the internal combustion engine based on the set driving force demand; and
a control module that, in a state other than a specific driving state of outputting either a braking force or a light load to the driveshaft under the explosive combustion continuation condition, controls the internal combustion engine, the electric power-mechanical power input output mechanism, and the motor to drive the internal combustion engine in the set target operation state and to ensure output of a driving force equivalent to the set driving force demand to the driveshaft, while in the specific driving state under the explosive combustion continuation condition, controlling the internal combustion engine, the electric power-mechanical power input output mechanism, and the motor to make an operating status of the internal combustion engine approach to the set target operation state via a route under a predetermined restriction with continuation of the explosive combustion of the fuel in the internal combustion engine and to ensure output of the driving force equivalent to the set driving force demand to the driveshaft.
1 Assignment
0 Petitions
Accused Products
Abstract
In requirement of catalyst degradation control with setting of a catalyst degradation control flag Fc to 1, the braking control of the invention sets torque commands Tm1* and Tm2* of two motors and controls the operations of an engine and the two motors to shift a drive point of the engine on an optimum fuel consumption operation curve by a preset rotation speed variation Nrt1 in a specific range of rotation speed that ensures no occurrence of a misfire in the engine within an input limit Win of a battery and to ensure output of a braking torque demand Tr* to a ring gear shaft or driveshaft (steps S200 to S250). Such braking control stably lowers a rotation speed Ne of the engine to a target rotation speed Ne* and desirably enhances the fuel consumption under the catalyst degradation control.
38 Citations
20 Claims
-
1. A power output apparatus that outputs power to a driveshaft, said power output apparatus comprising:
-
an internal combustion engine that has an output shaft and outputs power; an electric power-mechanical power input output mechanism that is connected with the output shaft of the internal combustion engine and with the driveshaft and outputs at least part of the output power of the internal combustion engine to the driveshaft through input and output of electric power and mechanical power; a motor that inputs and outputs power from and to the driveshaft; an accumulator unit that transmits electric power to and from both the electric power-mechanical power input output mechanism and the motor; a driving force demand setting unit that sets a driving force demand to be output to the driveshaft; a target operation state setting module that, upon no satisfaction of an explosive combustion continuation condition for keeping explosive combustion of a fuel in the internal combustion engine, enables intermittent operation of the internal combustion engine and sets a target operation state of the internal combustion engine based on the set driving force demand, while upon satisfaction of the explosive combustion continuation condition, continuously keeping operation of the internal combustion engine and setting the target operation state of the internal combustion engine based on the set driving force demand; and a control module that, in a state other than a specific driving state of outputting either a braking force or a light load to the driveshaft under the explosive combustion continuation condition, controls the internal combustion engine, the electric power-mechanical power input output mechanism, and the motor to drive the internal combustion engine in the set target operation state and to ensure output of a driving force equivalent to the set driving force demand to the driveshaft, while in the specific driving state under the explosive combustion continuation condition, controlling the internal combustion engine, the electric power-mechanical power input output mechanism, and the motor to make an operating status of the internal combustion engine approach to the set target operation state via a route under a predetermined restriction with continuation of the explosive combustion of the fuel in the internal combustion engine and to ensure output of the driving force equivalent to the set driving force demand to the driveshaft. - View Dependent Claims (2, 3, 4, 5, 6, 7)
-
-
8. A vehicle, comprising:
-
an internal combustion engine that has an output shaft and outputs power; an electric power-mechanical power input output mechanism that is connected with the output shaft of the internal combustion engine and with the first axle and outputs at least part of the output power of the internal combustion engine to the driveshaft through input and output of electric power and mechanical power; a motor that inputs and outputs power from and to the first axle or a second axle different from said first axle; an accumulator unit that transmits electric power to and from both the electric power-mechanical power input output mechanism and the motor; a driving force demand setting unit that sets a driving force demand required for a drive of said vehicle; a target operation state setting module that, upon no satisfaction of an explosive combustion continuation condition for keeping explosive combustion of a fuel in the internal combustion engine, enables intermittent operation of the internal combustion engine and sets a target operation state of the internal combustion engine based on the set driving force demand, while upon satisfaction of the explosive combustion continuation condition, continuously keeping operation of the internal combustion engine and setting the target operation state of the internal combustion engine based on the set driving force demand; and a control module that, in a state other than a specific driving state of outputting either a braking force or a light load to the vehicle under the explosive combustion continuation condition, controls the internal combustion engine, the electric power-mechanical power input output mechanism, and the motor to drive the internal combustion engine in the set target operation state and to ensure output of a driving force equivalent to the set driving force demand to the vehicle, while in the specific driving state under the explosive combustion continuation condition, controlling the internal combustion engine, the electric power-mechanical power input output mechanism, and the motor to make an operating status of the internal combustion engine approach to the set target operation state via a route under a predetermined restriction with continuation of the explosive combustion of the fuel in the internal combustion engine and to ensure output of the driving force equivalent to the set driving force demand to the vehicle. - View Dependent Claims (9, 10, 11, 12, 13, 14)
-
-
15. A control method of the power output apparatus, said power output apparatus comprising:
- an internal combustion engine that has an output shaft and outputs power;
an electric power-mechanical power input output mechanism that is connected with the output shaft of the internal combustion engine and with the driveshaft and outputs at least part of the output power of the internal combustion engine to the driveshaft through input and output of electric power and mechanical power;
a motor that inputs and outputs power from and to the driveshaft;
an accumulator unit that transmits electric power to and from both the electric power-mechanical power input output mechanism and the motor;
said control method of the power output apparatus comprising the steps of;(a) upon no satisfaction of an explosive combustion continuation condition for keeping explosive combustion of a fuel in the internal combustion engine, enables intermittent operation of the internal combustion engine and sets a target operation state of the internal combustion engine based on the driving force demand to be output to the driveshaft, while upon satisfaction of the explosive combustion continuation condition, continuously keeping operation of the internal combustion engine and setting the target operation state of the internal combustion engine based on the said driving force demand; and (b) in a state other than a specific driving state of outputting either a braking force or a light load to the driveshaft under the explosive combustion continuation condition, controls the internal combustion engine, the electric power-mechanical power input output mechanism, and the motor to drive the internal combustion engine in the set target operation state and to ensure output of a driving force equivalent to the said driving force demand to the driveshaft, while in the specific driving state under the explosive combustion continuation condition, controlling the internal combustion engine, the electric power-mechanical power input output mechanism, and the motor to make an operating status of the internal combustion engine approach to the set target operation state via a route under a predetermined restriction with continuation of the explosive combustion of the fuel in the internal combustion engine and to ensure output of the driving force equivalent to the said driving force demand to the driveshaft. - View Dependent Claims (16, 17, 18, 19, 20)
- an internal combustion engine that has an output shaft and outputs power;
Specification