Interrelated power delivery controls – including engine control – Plural engines – Electric engine
Reexamination Certificate
2006-01-03
2008-11-04
Wright, Dirk (Department: 3681)
Interrelated power delivery controls, including engine control
Plural engines
Electric engine
Reexamination Certificate
active
07445578
ABSTRACT:
A control device for a vehicular drive system including (a) a differential portion having a differential mechanism operable to distribute an output of an engine to a first electric motor and a power transmitting member, and a second electric motor disposed in a power transmitting path between the power transmitting member and a drive wheel of a vehicle, (b) a transmission portion which constitutes a part of the power transmitting path, (c) a coupling device operable to place a power transmitting path between the engine and the drive wheel, selectively in a power-transmitting state or a power-cutoff state, and (d) a shift lever operable between a drive position for the coupling device to select the power-transmitting state, and a non-drive position for the coupling device to select the power-cutoff state, the control device including an engine-speed control device for controlling engine speed NEso as not to exceed a predetermined engine speed value NE′ while the shift lever is placed in the non-drive position, so that the coupling device is engaged while engine torque TEis reduced as a result of an operation of the shift lever from the non-drive position to the drive position, whereby the durability of the coupling device is improved.
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Tabata Atsushi
Taga Yutaka
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
Toyota Jidosha & Kabushiki Kaisha
Wright Dirk
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