Interrelated power delivery controls – including engine control – Plural engines – Electric engine
Reexamination Certificate
2007-10-16
2007-10-16
Ho, Ha D. (Department: 3681)
Interrelated power delivery controls, including engine control
Plural engines
Electric engine
C477S003000
Reexamination Certificate
active
11055118
ABSTRACT:
A mode switch control system for a hybrid transmission for a powertrain, the powertrain including an engine, a first motor/generator, and a second motor/generator, which controls a mode switch from a high speed mode to a low speed mode. The high speed mode is established by engaging a high-mode clutch. The low speed mode is established by engaging a low-mode brake. In the mode switch, the mode switch control system reduces the torque capacity of the high-mode clutch to zero linearly in time by an open-loop control system, and varies the torque of the second motor/generator to a target torque by a feedback control system so as to adjust the gear ratio to a target gear ratio, while the mode switch control system holds substantially constant the input torque from the engine, and the torque of the first motor/generator, to hold substantially constant the output torque.
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U.S. Appl. No. 11/004,875, filed Dec. 7, 2004, Oshidari.
Ho Ha D.
Nissan Motor Co,. Ltd.
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