Data processing: vehicles – navigation – and relative location – Vehicle control – guidance – operation – or indication – Transmission control
Reexamination Certificate
2011-08-23
2011-08-23
Black, Thomas G (Department: 3661)
Data processing: vehicles, navigation, and relative location
Vehicle control, guidance, operation, or indication
Transmission control
C701S101000, C123S347000, C477S054000, C477S109000, C477S116000, C477S174000
Reexamination Certificate
active
08005601
ABSTRACT:
A method controls an internal combustion engine in a drive train having a hydraulic torque converter with a pump wheel and a turbine wheel, during a changeover from an overrun mode into a traction mode. In the method, the rotational speeds of the pump wheel and of the turbine wheel are sensed simultaneously and compared with one another, and a deviation of the rotational speed of the pump wheel from the rotational speed of the turbine wheel being determined. If the rotational speed of the turbine wheel is higher than the rotational speed of the pump wheel and the deviation drops below a predefined threshold value, the torque of the internal combustion engine is set in dependence on the deviation and a rate of change of the rotational speed of the pump wheel. Furthermore a control unit is configured to carry out such a method.
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European Search Report dated Nov. 10, 2008.
Black Thomas G
Olsen Lin B
Porsche AG Dr. Ing. h.c. F.
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