Power output apparatus and automobile with power output apparatus mounted thereon
First Claim
1. A power output apparatus that outputs power to a drive shaft, said power output apparatus comprising:
- an internal combustion engine;
an electric power-mechanical power input-output module that is connected to an output shaft of the internal combustion engine and to the drive shaft and outputs at least part of output power from the internal combustion engine to the drive shaft through input and output of electric power and mechanical power;
a motor that inputs and outputs power from and to the drive shaft;
a target drive point setting module that sets a target drive point of the internal combustion engine, based on a power demand required to the drive shaft;
an output decrease detection module that detects an output decreasing state, where the output power from the internal combustion engine is lower than a power level defined by the target drive point, while the internal combustion engine is under a preset control to be driven at the target drive point; and
a control module that controls the internal combustion engine, said electric power-mechanical power input-output module, and the motor with a predetermined control parameter, in the case of no detection of the output decreasing state by said output decrease detection module, said control module correcting the predetermined control parameter to increase the output power from the internal combustion engine, in the case of detection of the output decreasing state by said output decrease detection module, and controlling the internal combustion engine, said electric power-mechanical power input-output module, and the motor with the corrected control parameter.
1 Assignment
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Accused Products
Abstract
The control technique of the invention sets smaller values to an engine stop reference value and an engine start reference value in the state of use of a regular fuel, compared with values in the ordinal state. When a calculated engine power demand Pe* is less than the engine stop reference value, the control stops the operation of the engine. When the calculated engine power demand Pe* exceeds the engine start reference value, on the other hand, the control starts the operation of the engine. This arrangement facilitates the start of the engine in the state of use of the regular fuel, compared with the start in the ordinary state. A corrective revolution speed ΔN is added to a target revolution speed Ne* of the engine, in order to respond to a decrease in output power from the internal combustion engine.
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Citations
19 Claims
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1. A power output apparatus that outputs power to a drive shaft, said power output apparatus comprising:
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an internal combustion engine;
an electric power-mechanical power input-output module that is connected to an output shaft of the internal combustion engine and to the drive shaft and outputs at least part of output power from the internal combustion engine to the drive shaft through input and output of electric power and mechanical power;
a motor that inputs and outputs power from and to the drive shaft;
a target drive point setting module that sets a target drive point of the internal combustion engine, based on a power demand required to the drive shaft;
an output decrease detection module that detects an output decreasing state, where the output power from the internal combustion engine is lower than a power level defined by the target drive point, while the internal combustion engine is under a preset control to be driven at the target drive point; and
a control module that controls the internal combustion engine, said electric power-mechanical power input-output module, and the motor with a predetermined control parameter, in the case of no detection of the output decreasing state by said output decrease detection module, said control module correcting the predetermined control parameter to increase the output power from the internal combustion engine, in the case of detection of the output decreasing state by said output decrease detection module, and controlling the internal combustion engine, said electric power-mechanical power input-output module, and the motor with the corrected control parameter. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. An automobile, said automobile comprising:
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an internal combustion engine;
an electric power-mechanical power input-output module that is connected to an output shaft of the internal combustion engine and to a drive shaft linked with an axle and outputs at least part of output power from the internal combustion engine to the drive shaft through input and output of electric power and mechanical power;
a motor that inputs and outputs power from and to the drive shaft;
a target drive point setting module that sets a target drive point of the internal combustion engine, based on a power demand required to the drive shaft;
an output decrease detection module that detects an output decreasing state, where the output power from the internal combustion engine is lower than a power level defined by the target drive point, while the internal combustion engine is under a preset control to be driven at the target drive point; and
a control module that controls the internal combustion engine, said electric power-mechanical power input-output module, and the motor with a predetermined control parameter, in the case of no detection of the output decreasing state by said output decrease detection module, said control module correcting the predetermined control parameter to increase the output power from the internal combustion engine, in the case of detection of the output decreasing state by said output decrease detection module, and controlling the internal combustion engine, said electric power-mechanical power input-output module, and the motor with the corrected control parameter. - View Dependent Claims (13, 14, 15, 16, 17, 18)
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19. A control method of a power output apparatus, said power output apparatus being equipped with an internal combustion engine, an electric power-mechanical power input-output module that is connected to an output shaft of the internal combustion engine and to a drive shaft and outputs at least part of output power from the internal combustion engine to the drive shaft through input and output of electric power and mechanical power, and a motor that inputs and outputs power from and to the drive shaft,
said control method comprising the steps of: -
(a) setting a target drive point of the internal combustion engine, based on a power demand required to the drive shaft;
(b) detecting an output decreasing state, where the output power from the internal combustion engine is lower than a power level defined by the target drive point, while the internal combustion engine is under a preset control to be driven at the target drive point; and
(c) controlling the internal combustion engine, said electric power-mechanical power input-output module, and the motor with a predetermined control parameter, in the case of no detection of the output decreasing state by step (b), while correcting the predetermined control parameter to increase the output power from the internal combustion engine, in the case of detection of the output decreasing state by step (b), and controlling the internal combustion engine, said electric power-mechanical power input-output module, and the motor with the corrected control parameter.
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Specification