Vehicle, driving apparatus and control method of both
First Claim
1. A vehicle, comprising:
- an internal combustion engine;
an electric power-mechanical power input output mechanism that is connected to a drive shaft coupled to an axle, and connected to an output shaft of said internal combustion engine so as to be rotatable independently of the drive shaft, and can input and output mechanical power to and from said drive shaft and said output shaft, with the input and output of electric power and mechanical power;
an electric motor that can output mechanical power to said drive shaft;
a generator capable of exchanging electric power with said electric power-mechanical power input output mechanism and said electric motor;
a vehicle speed detection device that detects a vehicle speed;
a standstill judgment device that judges whether or not a vehicle is at a standstill on the basis of said detected vehicle speed; and
a control device that when a demand for an idle operation of said internal combustion engine has been made, controls said internal combustion engine, said electric power-mechanical power input output mechanism and said electric motor so that said idle operation of said internal combustion engine is performed at a first rotation speed and the vehicle travels by use of a power demand required for the travel in a case where it has been judged by said standstill judgment device that said vehicle is not at a standstill and during a high vehicle speed travel which is such that said detected vehicle speed is in a prescribed high vehicle speed range, controls said internal combustion engine, said electric power-mechanical power input output mechanism and said electric motor so that said idle operation of said internal combustion engine is performed at a second rotation speed higher than said first rotation speed and the vehicle travels by use of the power demand required for the travel in a case where it has been judged by said standstill judgment device that said vehicle is not at a standstill and during a low vehicle speed travel which is such that said detected vehicle speed is in a prescribed low vehicle speed range, and controls the internal combustion engine so that said idle operation of said internal combustion engine is performed at a third rotation speed lower than said second rotation speed during a standstill in a case where it has been judged by said standstill judgment device that said vehicle is at a standstill.
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0 Petitions
Accused Products
Abstract
During a standstill, a prescribed rotation speed N3, which is lower than a prescribed rotation speed N2 used during a travel at a low vehicle speed, is set as a minimum rotation speed Nemin (S410), and when a demand for an idle operation has been made (S490), the minimum rotation speed Nemin is set as a target rotation speed Ne* and the value 0 is set as a target torque Te* (S500), whereby an engine is controlled. As a result of this, it is possible to improve the fuel consumption of a vehicle when the engine is operated at idle at standstill compared to a case where the engine is operated at idle at the minimum rotation speed Nemin for which the prescribed rotation speed N2 is set regardless of whether or not the vehicle is at a standstill.
32 Citations
15 Claims
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1. A vehicle, comprising:
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an internal combustion engine; an electric power-mechanical power input output mechanism that is connected to a drive shaft coupled to an axle, and connected to an output shaft of said internal combustion engine so as to be rotatable independently of the drive shaft, and can input and output mechanical power to and from said drive shaft and said output shaft, with the input and output of electric power and mechanical power; an electric motor that can output mechanical power to said drive shaft; a generator capable of exchanging electric power with said electric power-mechanical power input output mechanism and said electric motor; a vehicle speed detection device that detects a vehicle speed; a standstill judgment device that judges whether or not a vehicle is at a standstill on the basis of said detected vehicle speed; and a control device that when a demand for an idle operation of said internal combustion engine has been made, controls said internal combustion engine, said electric power-mechanical power input output mechanism and said electric motor so that said idle operation of said internal combustion engine is performed at a first rotation speed and the vehicle travels by use of a power demand required for the travel in a case where it has been judged by said standstill judgment device that said vehicle is not at a standstill and during a high vehicle speed travel which is such that said detected vehicle speed is in a prescribed high vehicle speed range, controls said internal combustion engine, said electric power-mechanical power input output mechanism and said electric motor so that said idle operation of said internal combustion engine is performed at a second rotation speed higher than said first rotation speed and the vehicle travels by use of the power demand required for the travel in a case where it has been judged by said standstill judgment device that said vehicle is not at a standstill and during a low vehicle speed travel which is such that said detected vehicle speed is in a prescribed low vehicle speed range, and controls the internal combustion engine so that said idle operation of said internal combustion engine is performed at a third rotation speed lower than said second rotation speed during a standstill in a case where it has been judged by said standstill judgment device that said vehicle is at a standstill. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A driving apparatus that is mounted on a vehicle along with an internal combustion engine and an accumulator unit capable of charge and discharge, said driving apparatus comprising:
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an electric power-mechanical power input output mechanism that is connected to a drive shaft coupled to an axle and connected to an output shaft of said internal combustion engine so as to be rotatable independently of the drive shaft, can exchange electric power with said accumulator unit, and can input and output mechanical power to and from said drive shaft and said output shaft, with the input and output of electric power and mechanical power; an electric motor that can exchange electric power with said accumulator unit and can output mechanical power to said drive shaft; a standstill judgment device that judges whether or not the vehicle is at a standstill on the basis of a vehicle speed; and a control device that when a demand for an idle operation of said internal combustion engine has been made, controls said internal combustion engine, said electric power-mechanical power input output mechanism and said electric motor so that said idle operation of said internal combustion engine is performed at a first rotation speed and the vehicle travels by use of a power demand required for the travel in a case where it has been judged by said standstill judgment device that said vehicle is not at a standstill and during a high vehicle speed travel which is such that a detected vehicle speed is in a prescribed high vehicle speed range, controls said internal combustion engine, said electric power-mechanical power input output mechanism and said electric motor so that said idle operation of said internal combustion engine is performed at a second rotation speed higher than said first rotation speed and the vehicle travels by use of the power demand required for the travel in a case where it has been judged by said standstill judgment device that said vehicle is not at a standstill and during a low vehicle speed travel which is such that said detected vehicle speed is in a prescribed low vehicle speed range, and controls the internal combustion engine so that said idle operation of said internal combustion engine is performed at a third rotation speed lower than said second rotation speed during a standstill in a case where it has been judged by said standstill judgment device that said vehicle is at a standstill.
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14. A control method of a vehicle, comprising:
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an internal combustion engine; an electric power-mechanical power input output mechanism that is connected to a drive shaft coupled to an axle, and connected to an output shaft of said internal combustion engine so as to be rotatable independently of the drive shaft, and can input and output mechanical power to and from said drive shaft and said output shaft, with the input and output of electric power and mechanical power; an electric motor that can output mechanical power to said drive shaft; a generator capable of exchanging electric power with said electric power-mechanical power input output mechanism and said electric motor; said control method of a vehicle comprising the steps of; (a) judging whether or not a vehicle is at a standstill on the basis of a vehicle speed; and (b) when a demand for an idle operation of said internal combustion engine has been made, controlling said internal combustion engine, said electric power-mechanical power input output mechanism and said electric motor so that said idle operation of said internal combustion engine is performed at a first rotation speed and the vehicle travels by use of a power demand required for the travel in a case where it has been judged that said vehicle is not at a standstill and during a high vehicle speed travel which is such that a detected vehicle speed is in a prescribed high vehicle speed range, controlling said internal combustion engine, said electric power-mechanical power input output mechanism and said electric motor so that said idle operation of said internal combustion engine is performed at a second rotation speed higher than said first rotation speed and the vehicle travels by use of the power demand required for the travel in a case where it has been judged that said vehicle is not at a standstill and during a low vehicle speed travel which is such that said detected vehicle speed is in a prescribed low vehicle speed range, and controlling the internal combustion engine so that said idle operation of said internal combustion engine is performed at a third rotation speed lower than said second rotation speed during a standstill in a case where it has been judged that said vehicle is at a standstill.
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15. A control method of a driving apparatus that is mounted on a vehicle along with an internal combustion engine and an accumulator unit capable of charge and discharge, said driving apparatus comprising:
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an electric power-mechanical power input output mechanism that is connected to a drive shaft coupled to an axle and connected to an output shaft of said internal combustion engine so as to be rotatable independently of the drive shaft, can exchange electric power with said accumulator unit, and can input and output mechanical power to and from said drive shaft and said output shaft, with the input and output of electric power and mechanical power; an electric motor that can exchange electric power with said accumulator unit and can output mechanical power to said drive shaft; said control method of a driving apparatus comprising the steps of; (a) judging whether or not a vehicle is at a standstill on the basis of a vehicle speed; and (b) when a demand for an idle operation of said internal combustion engine has been made, controlling said internal combustion engine, said electric power-mechanical power input output mechanism and said electric motor so that said idle operation of said internal combustion engine is performed at a first rotation speed and the vehicle travels by use of a power demand required for the travel in a case where it has been judged that said vehicle is not at a standstill and during a high vehicle speed travel which is such that a detected vehicle speed is in a prescribed high vehicle speed range, controlling said internal combustion engine, said electric power-mechanical power input output mechanism and said electric motor so that said idle operation of said internal combustion engine is performed at a second rotation speed higher than said first rotation speed and the vehicle travels by use of the power demand required for the travel in a case where it has been judged that said vehicle is not at a standstill and during a low vehicle speed travel which is such that said detected vehicle speed is in a prescribed low vehicle speed range, and controlling the internal combustion engine so that said idle operation of said internal combustion engine is performed at a third rotation speed lower than said second rotation speed during a standstill in a case where it has been judged that said vehicle is at a standstill.
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Specification