TRANSMISSION CONTROL DEVICE
1 Assignment
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Accused Products
Abstract
A transmission control device (7) of a transmission (3) for a drivetrain which includes, in addition to the transmission (3), a hybrid drive with an internal combustion engine (1) and an electric motor (2). The transmission control device (7) stores parameters which form the basis of the manner with which gearshifts are controlled or regulated. At least some parameters are stored in duplicate, firstly, for operating the transmission (3) under purely electric-motor power using only the electric motor (2), and secondly for operating the transmission (3) during hybrid driving using both the internal combustion engine (1) and the electric motor (2).
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Citations
7 Claims
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1-3. -3. (canceled)
- 4. A transmission control device of a transmission for a drivetrain in combination with a hybrid drive comprising an internal combustion engine, an electric motor and the transmission, parameters being stored in the transmission control device, on a basis of which gearshifts are one of controlled and regulated, and at least some parameters are stored in duplicate, namely, firstly for operation of the transmission (3) when driving purely under electric-motor power using only the electric motor (2), and secondly for operation of the transmission (3) during hybrid driving using the internal combustion engine (1) and the electric motor (2).
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7. A method of controlling a transmission of a vehicle drive train in which the vehicle drive train comprises a combustion engine (1) coupled, via a first clutch (5), to an electric motor (2) which is coupled, via a second clutch (6), to the transmission (3), and an engine control unit (8) for controlling and regulating operation of the combustion engine (1) and the electric motor (2), the method comprising the steps of:
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exchanging data between the combustion engine (1), the electric motor (2) and the engine control unit (8) to control and regulate operation of the combustion engine (1) and the electric motor (2); exchanging data between a transmission control unit (7) and the transmission (3) to control and regulate gearshifts within the transmission (3); exchanging data between the engine control unit (8) and the transmission control unit (7) to co-ordinate control and regulation of the combustion engine (1) and the electric motor (2) with the control and regulation of the transmission (3); and storing a first set and a second set of parameters within the transmission control unit (7), each of which influences the control and regulation of gearshifts within the transmission (3), the first set of parameters being influenced by a mass moment of inertia of the combustion engine (1), the first clutch (5) and the electric motor (2) and facilitating a first type of gearshifts when the transmission (3) is driven by both the combustion engine (1) and the electric motor (2), the second set of parameters being influenced by the mass moment of inertia of the first clutch (5) and the electric motor (2) and facilitating a second type of gearshifts when the transmission (3) is driven solely by the electric motor (2).
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Specification