Hybrid drive for a vehicle, in particular an automobile
First Claim
1. In a hybrid drive for a vehicle, for example, an automobile, with an electric engine which can be supplied energy from an electrical energy storage device and is capable of supplying energy back into said energy storage device, said electric engine being in connection with a driving axle of the vehicle by means of a first disconnecting clutch and with an internal combustion engine arranged in series therewith by means of a second disconnecting clutch, wherein depending on the need, at least one of:
- neither of the two clutches, only one of the two clutches, and both clutches are engaged, the improvement wherein the internal combustion engine is designed without a flywheel and the flywheel mass required for its operation is an integral component of the rotating masses of the drive between the disconnection points of the two disconnecting clutches.
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Accused Products
Abstract
A hybrid drive for a vehicle includes an electric engine supplied with energy from an electrical storage device and capable of returning energy back to the storage device. The electric engine is connected with a driving axle of the vehicle by a first disconnecting clutch and to an internal combustion engine arranged in series therewith by a second disconnecting clutch. Operation of these clutches can be independent of each other. In order to save fuel the internal combustion engine is not supplied with a dedicated flywheel, but instead utilizes the rotating masses of the drive between the disconnection points of the two clutches, e.g., the rotating elements of the electric engine, as a flywheel.
242 Citations
33 Claims
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1. In a hybrid drive for a vehicle, for example, an automobile, with an electric engine which can be supplied energy from an electrical energy storage device and is capable of supplying energy back into said energy storage device, said electric engine being in connection with a driving axle of the vehicle by means of a first disconnecting clutch and with an internal combustion engine arranged in series therewith by means of a second disconnecting clutch, wherein depending on the need, at least one of:
- neither of the two clutches, only one of the two clutches, and both clutches are engaged, the improvement wherein the internal combustion engine is designed without a flywheel and the flywheel mass required for its operation is an integral component of the rotating masses of the drive between the disconnection points of the two disconnecting clutches.
- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A method for operation of a hybrid drive for a vehicle comprised of an electric engine powered by an electrical energy storage device and connected to the vehicle driving axle by a first disconnecting clutch, said electric engine also being connected to an internal combustion engine in series therewith by a second disconnecting clutch, which internal combustion engine is without a flywheel and instead utilizes the rotating masses between the disconnection points of the disconnecting clutches as a flywheel mass, comprising the steps of:
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disengaging the second disconnecting clutch, and running the electric engine up to a predetermined speed via the energy storage device. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33)
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Specification