Interrelated power delivery controls – including engine control – Plural engines – Electric engine
Reexamination Certificate
2006-05-26
2009-11-17
Pang, Roger L (Department: 3655)
Interrelated power delivery controls, including engine control
Plural engines
Electric engine
C475S005000, C475S219000
Reexamination Certificate
active
07618343
ABSTRACT:
A control apparatus for a vehicular drive system provided with a continuously-variable transmission portion operable as an electrically controlled continuously variable transmission, and a step-variable transmission portion, the continuously-variable transmission 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, the control apparatus including a continuous-transmission control device including a first shifting control portion for controlling a speed ratio of the continuously-variable transmission portion, so as to prevent a change of a speed of the engine due to a change of an input speed of the step-variable transmission portion upon a shifting action of the step-variable transmission portion, and second shifting control portion for controlling the speed ratio of the continuously-variable transmission portion independently of the shifting action of the step-variable transmission portion, the continuous-transmission control means selectively activating the first shifting control portion and the second shifting control portion, on the basis of a manner in which an overall speed ratio of the transmission mechanism is changed.
REFERENCES:
patent: 6146302 (2000-11-01), Kashiwase
patent: 7179186 (2007-02-01), Bucknor et al.
patent: 7322902 (2008-01-01), Tabata et al.
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patent: 2005-348532 (2005-12-01), None
Inoue Yuji
Kamada Atsushi
Tabata Atsushi
Knight Derek D
Oblon, Spivak McClelland, Maier & Neustadt, L.L.P.
Pang Roger L
Toyota Jidosha & Kabushiki Kaisha
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