Drive unit for vehicle
First Claim
1. A drive unit for a vehicle comprising a first motor, power distributing means, a second motor, and a stepped speed change gear having frictional engaging means, wherein an engine driving force transmitted to an input shaft is distributed and transmitted to the first motor and an output section by the power distributing means, and the second motor is operated in association with the output section through the stepped speed change gear for performing a speed changing operation in accordance with the operation of the frictional engaging means, and an engine is started on the basis of the driving of the first motor, the drive unit further comprises:
- engine driving control means for driving the first motor on the basis of an engine driving signal, and driving the second motor so as to restrain a reaction force in the power distributing means due to the driving of the first motor in a state in which the stepped speed change gear connects the second motor and the output section by the frictional engaging means;
an electrically operated oil pump for generating an operating oil pressure of the frictional engaging means; and
an electrically operated pump control section having pump operation control means for operating the electrically operated oil pump prior to the control of the engine driving control means on the basis of an engine starting signal outputted in a vehicle stopped state.
1 Assignment
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Accused Products
Abstract
The drive unit for a vehicle has an engine driving control element for driving a first motor on the basis of an engine driving signal, and driving a second motor so as to restrain a reaction force in a power distributing planetary gear due to the driving of the first motor in a state in which the stepped speed change gear connects the second motor and an output shaft by brakes. Further, the drive unit has an electrically operated oil pump for generating an operating oil pressure of the brakes, and also has a control section having an electrically operated oil pump operation control element for operating the electrically operated oil pump prior to the control of the engine driving control element on the basis of an engine starting signal outputted in a vehicle stopped state.
30 Citations
20 Claims
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1. A drive unit for a vehicle comprising a first motor, power distributing means, a second motor, and a stepped speed change gear having frictional engaging means, wherein an engine driving force transmitted to an input shaft is distributed and transmitted to the first motor and an output section by the power distributing means, and the second motor is operated in association with the output section through the stepped speed change gear for performing a speed changing operation in accordance with the operation of the frictional engaging means, and an engine is started on the basis of the driving of the first motor, the drive unit further comprises:
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engine driving control means for driving the first motor on the basis of an engine driving signal, and driving the second motor so as to restrain a reaction force in the power distributing means due to the driving of the first motor in a state in which the stepped speed change gear connects the second motor and the output section by the frictional engaging means;
an electrically operated oil pump for generating an operating oil pressure of the frictional engaging means; and
an electrically operated pump control section having pump operation control means for operating the electrically operated oil pump prior to the control of the engine driving control means on the basis of an engine starting signal outputted in a vehicle stopped state. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A drive unit for a vehicle comprising a first motor, a power distributing element, a second motor, and a stepped speed change gear having frictional engaging elements, wherein an engine driving force transmitted to an input shaft is distributed and transmitted to the first motor and an output section by the power distributing element, and the second motor is operated in association with the output section through the stepped speed change gear for performing a speed changing operation in accordance with the operation of the frictional engaging elements, and an engine is started on the basis of the driving of the first motor, the drive unit further comprises:
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an engine driving control device that drives the first motor on the basis of an engine driving signal, and drives the second motor so as to restrain a reaction force in the power distributing element due to the driving of the first motor in a state in which the stepped speed change gear connects the second motor and the output section by the frictional engaging elements;
an electrically operated oil pump for generating an operating oil pressure of the frictional engaging elements; and
an electrically operated pump control section having a pump operation control element that operates the electrically operated oil pump prior to the control of the engine driving control device on the basis of an engine starting signal outputted in a vehicle stopped state.
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20. A method for controlling a drive unit for a vehicle having a first motor, a power distributing element, a second motor, and a stepped speed change gear having frictional engaging elements, wherein an engine driving force transmitted to an input shaft is distributed and transmitted to the first motor and an output section by the power distributing element, and the second motor is operated in association with the output section through the stepped speed change gear for performing a speed changing operation in accordance with the operation of the frictional engaging elements, and an engine is started on the basis of the driving of the first motor, comprising:
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driving the first motor on the basis of an engine driving signal, driving the second motor so as to restrain a reaction force in the power distributing means due to the driving of the first motor in a state in which the stepped speed change gear connects the second motor and the output section by the frictional engaging means;
generating an operating oil pressure of the frictional engaging elements; and
operating the electrically operated oil pump prior to driving the first and second motors on the basis of an engine starting signal outputted in a vehicle stopped state.
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Specification