Method and device for controlling a drive train of a hybrid vehicle
First Claim
1. A method for controlling a drive train of a hybrid vehicle, which can be driven by an internal combustion engine, respectively individually or together with an electric machine, which comprises an electrical energy store, power electronics and a motor/generator unit;
- wherein, depending on a first or second position of an operator control, the drive train is operated in a first operating mode corresponding to a high performance boost preparatory phase or in a second operating mode corresponding to a high performance boost phase;
the method comprising the steps of;
activating the first operating mode, wherein, in the first operating mode, the internal combustion engine is operated, the electrical energy store is charged by operating the motor/generator unit as a generator, and the electric machine is cooled, at least in certain areas, by an air conditioning device to increase a thermal storage capacity of the electric machine in preparation for activation of the second operating mode; and
activating the second operating mode, wherein, in the second operating mode, a boost function of the electric machine is activated by operating the motor/generator unit of the cooled electric machine, together with the internal combustion engine, as a motor, to achieve a greater operating power during the high performance boost phase than during the high performance boost preparatory phase.
1 Assignment
0 Petitions
Accused Products
Abstract
A method and a device for controlling a drive train of a hybrid vehicle (HEF), which can be driven by an internal combustion engine (BKA), respectively individually or together with an electric machine (EA), which includes an electrical energy store (ES), power electronics (LE) and a motor/generator unit (MGE). Depending on a first or second position of an operator control (BV), the drive train (A) is operated in a first operating mode (BM1) corresponding to a boost preparatory phase or in a second operating mode (BM2) corresponding to a boost phase. In the first operating mode (BM1) the electrical energy store (ES) is charged by operating the motor/generator unit (MGE), as a generator, and in the second operating mode (BM2) a boost function of the electric machine (EA) is called by operating the motor/generator unit (MGE), together with the internal combustion engine (BKA), as a motor.
5 Citations
16 Claims
-
1. A method for controlling a drive train of a hybrid vehicle, which can be driven by an internal combustion engine, respectively individually or together with an electric machine, which comprises an electrical energy store, power electronics and a motor/generator unit;
- wherein, depending on a first or second position of an operator control, the drive train is operated in a first operating mode corresponding to a high performance boost preparatory phase or in a second operating mode corresponding to a high performance boost phase;
the method comprising the steps of;activating the first operating mode, wherein, in the first operating mode, the internal combustion engine is operated, the electrical energy store is charged by operating the motor/generator unit as a generator, and the electric machine is cooled, at least in certain areas, by an air conditioning device to increase a thermal storage capacity of the electric machine in preparation for activation of the second operating mode; and activating the second operating mode, wherein, in the second operating mode, a boost function of the electric machine is activated by operating the motor/generator unit of the cooled electric machine, together with the internal combustion engine, as a motor, to achieve a greater operating power during the high performance boost phase than during the high performance boost preparatory phase. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
- wherein, depending on a first or second position of an operator control, the drive train is operated in a first operating mode corresponding to a high performance boost preparatory phase or in a second operating mode corresponding to a high performance boost phase;
-
9. A device for controlling a drive train of a hybrid vehicle, which can be driven by an internal combustion engine, respectively individually or together with an electric machine, which comprises an electrical energy store, power electronics and a motor/generator unit, comprising:
-
an operator control, wherein, depending on a first or second position of the operator control, the drive train is configured to be operated in a first operating mode corresponding to a high performance boost preparatory phase or in a second operating mode corresponding to a high performance boost phase; wherein, in the first operating mode, the internal combustion engine is operated, the electrical energy store is charged by operating the motor/generator unit, as a generator, and the electric machine is cooled, at least in certain areas, by an air conditioning device to increase a thermal storage capacity of the electric machine in preparation for activation of the second operating mode; and wherein, in the second operating mode, a boost function of the electric machine is activated by operating the motor/generator unit of the cooled electric machine, together with the internal combustion engine, as a motor, to achieve a greater operating power during the high performance boost phase than during the high performance boost preparatory phase. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
-
Specification