Prime-mover dynamo plants – Traction
Reexamination Certificate
2007-11-13
2007-11-13
Ponomarenko, Nicholas (Department: 2834)
Prime-mover dynamo plants
Traction
C290S00100C, C290S00400D, C180S065230, C475S005000
Reexamination Certificate
active
11373217
ABSTRACT:
A method of controlling a vehicle driving system having differential gear including an input shaft, an outlet shaft and a reactionary shaft, a flywheel, an engine, the flywheel and the engine being interlocked with the input shaft, an output shaft interlocked with the outlet shaft, a first motor generator (MG) interlocked with the reactionary shaft and a second MG adapted to receive the output electric power of the first MG as input. If the indicated torque of the output shaft as indicated by the pedaled quantity of the accelerator pedal is T2and a torque of the reactionary shaft is Trd, while a power transmission efficiency from the input shaft to the reactionary shaft by way of the differential gear, a power transmission efficiency from the input shaft to the output shaft by way of the differential gear and a power transmission efficiency from the reactionary shaft to the output shaft by way of the first MG and the second MG are respectively ηmr, ηmo and ηe, a critical speed ratio of the differential gear, a rotational speed of the output shaft and that of the flywheel are respectively ec, N2and Nf, the torque Trd is determined by the relation ofin-line-formulae description="In-line Formulae" end="lead"?Trd=(ec−1)×T2×ηmr/[{ηmo−(ηmr×ηe)}+{(ec×Nf/N2)×ηmr×ηe}]in-line-formulae description="In-line Formulae" end="tail"?and generation of electric power of the first MG is controlled so as to cause the reactionary shaft to produce the torque Trd.
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Ponomarenko Nicholas
Pravel James W.
Pravel Intellectual Property Law, P.C.
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