192 clutches and power-stop control – Vortex-flow drive and clutch – Including drive-lockup clutch
Reexamination Certificate
2008-05-27
2008-05-27
Bonck, Rodney H (Department: 3681)
192 clutches and power-stop control
Vortex-flow drive and clutch
Including drive-lockup clutch
C074S732100, C477S169000
Reexamination Certificate
active
07377373
ABSTRACT:
Engagement, disengagement, and slip of a lock-up clutch can be controlled using two valves that are a lock-up relay valve and a linear solenoid valve. A lock-up control valve employed in a conventional hydraulic control apparatus can be eliminated, which simplifies the configuration, and reduces the size of a hydraulic control apparatus for a torque converter with a lock-up clutch. When the lock-up clutch is engaged, hydraulic pressure output from the linear solenoid valve is supplied to a disengagement-side oil chamber of the torque converter, and a pressure difference between the engagement-side oil chamber and the disengagement-side oil chamber is applied to a spool valve element of the linear solenoid valve. Therefore, the spool valve element is driven such that an electromagnetic force applied from a linear solenoid becomes equal to the pressure difference.
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Abe Akiharu
Honda Atsushi
Inoue Yuji
Kamada Atsushi
Nozaki Kazutoshi
Bonck Rodney H
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
Toyota Jidosha & Kabushiki Kaisha
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