Method For Operating a Hybrid Vehicle Drive and a Device For Carrying Out Said Method
First Claim
1. A method of operating a vehicle drive with at least one internal combustion engine and at least one electric machine mechanically coupled to said internal combustion engine and having at least one power storage battery actively connectable to the electric machine and to the internal combustion engine in at least one on-board electric network, wherein said internal combustion engine and electric machine produce a nominal required drive torque in a substantially common manner, the method comprising:
- ascertaining an instant electromotive torque reserve of the at least one electric machine specifying an internal combustion engine torque reserve for the at least one internal combustion engine taking into account the instant electromotive torque reserve, so that a torque reserve equals a minimum reference torque reserve of the internal combustion engine for at least the one internal combustion engine.
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Abstract
The invention relates to a method for operating a motor vehicle drive comprising at least one internal combusting engine (10), at least one electric machine (20) mechanically coupled to said internal combustion engine (10) and at least one power storage battery actively connectable to said electric machine (20) and to the internal combustion engine (1) in an on-board electric network, wherein said internal combustion engine (10) and electric machine (20) produces a nominal required drive torque (M) in a substantially common manner, the instant electromotive torque reserve (MEres) of the electric machines(s) (20) is determined and the internal combustion engine torque reserve is taken into account as a minimum reference torque reserve of the internal combustion engine for at least one or several internal combustion engines (10).
29 Citations
15 Claims
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1. A method of operating a vehicle drive with at least one internal combustion engine and at least one electric machine mechanically coupled to said internal combustion engine and having at least one power storage battery actively connectable to the electric machine and to the internal combustion engine in at least one on-board electric network, wherein said internal combustion engine and electric machine produce a nominal required drive torque in a substantially common manner, the method comprising:
- ascertaining an instant electromotive torque reserve of the at least one electric machine specifying an internal combustion engine torque reserve for the at least one internal combustion engine taking into account the instant electromotive torque reserve, so that a torque reserve equals a minimum reference torque reserve of the internal combustion engine for at least the one internal combustion engine.
- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A device for the implementation of the method for operating a vehicle drive with at least one internal combustion engine and at least one electric machine mechanically coupled to said internal combustion engine as well as with at least one power storage battery actively connectable to said electric machine and to said internal combustion engine in at least one on-board electric network, wherein said internal combustion engine and electric machine produce a required nominal drive torque in a substantially common manner and wherein an overriding control mechanism is disposed in order to specify a nominal lead torque for the entire drive and a nominal torque for the entire drive in such a way that an instant electromotive torque reserve of the at least one electric machine can be ascertained, and this is taken into account during the specification of an internal combustion engine torque reserve for the at least internal combustion engine so that said torque reserve equals a minimum reference torque reserve of the internal combustion engine for the at least one internal combustion engine.
Specification