Control system for hybrid vehicles
First Claim
1. A control system for a hybrid vehicle, in which an internal combustion engine is connected to a first electric motor and to an output member through a power distributing mechanism, in which a second electric motor is connected to the output member through a transmission wherein a torque capacity is varied in accordance with an oil pressure, and which has an electric oil pump for generating an oil pressure to set the torque capacity of the transmission, comprising:
- an oil pressure judging means for judging whether or not the oil pressure established by operating the electric oil pump is raised higher than a preset value;
an electric oil pump output lowering means for lowering an output of the electric oil pump in case the oil pressure judging means judges that the oil pressure is raised higher than the preset value; and
a cranking means for carrying out a cranking of the internal combustion engine by the first electric motor.
1 Assignment
0 Petitions
Accused Products
Abstract
A control system for a hybrid vehicle, in which an engine is connected to a first motor generator and to an output shaft through a power distributing mechanism (12), in which a second motor generator is connected to the output shaft through a transmission (6) wherein a torque capacity is varied in accordance with an oil pressure, and which has an electric oil pump (OPM) for generating an oil pressure, comprising: an oil pressure judging means for judging whether or not the oil pressure established by operating OPM is raised higher than a preset value; an electric oil pump output lowering device for lowering an output of OPM in case the oil pressure judging device judges that the oil pressure is raised higher than the preset value; and a cranking device for carrying out a cranking of E/G by the first motor generator.
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Citations
19 Claims
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1. A control system for a hybrid vehicle, in which an internal combustion engine is connected to a first electric motor and to an output member through a power distributing mechanism, in which a second electric motor is connected to the output member through a transmission wherein a torque capacity is varied in accordance with an oil pressure, and which has an electric oil pump for generating an oil pressure to set the torque capacity of the transmission, comprising:
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an oil pressure judging means for judging whether or not the oil pressure established by operating the electric oil pump is raised higher than a preset value;
an electric oil pump output lowering means for lowering an output of the electric oil pump in case the oil pressure judging means judges that the oil pressure is raised higher than the preset value; and
a cranking means for carrying out a cranking of the internal combustion engine by the first electric motor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A control system for a hybrid vehicle, in which an internal combustion engine is connected to a first electric motor and to an output member through a power distributing mechanism, in which a second electric motor is connected to an output member through a transmission wherein a torque capacity is varied in accordance with an oil pressure, and which has an electric oil pump for generating an oil pressure to set the torque capacity of the transmission, comprising:
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an oil pressure judging device for judging whether or not the oil pressure established by operating the electric oil pump is raised higher than a preset value;
an electric oil pump output lowering device for lowering an output of the electric oil pump in case the oil pressure judging means judges that the oil pressure is raised higher than the preset value; and
a cranking device for carrying out a cranking of the internal combustion engine by the first electric motor. - View Dependent Claims (17, 18)
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19. A control method for a hybrid vehicle, in which an internal combustion engine is connected to a first electric motor and to an output member through a power distributing mechanism, in which a second electric motor is connected to the output member through a transmission wherein a torque capacity is varied in accordance with an oil pressure, and which has an electric oil pump for generating an oil pressure to set the torque capacity of the transmission, comprising:
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a step of judging whether or not the oil pressure established by operating the electric oil pump is raised higher than a preset value;
a step of lowering an output of the electric oil pump in case the oil pressure is raised higher than the preset value; and
a step of carrying out a cranking of the internal combustion engine by the first electric motor.
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Specification