Interrelated power delivery controls – including engine control – Transmission control – Transmission controlled by engine
Reexamination Certificate
2007-03-13
2007-03-13
Pang, Roger (Department: 3681)
Interrelated power delivery controls, including engine control
Transmission control
Transmission controlled by engine
Reexamination Certificate
active
10849058
ABSTRACT:
A control apparatus for a vehicular automatic transmission includes a control portion that executes a neutral control in which the control portion places the automatic transmission in a neutral state by reducing an application load on a frictional apply device inside the automatic transmission when the vehicle is stopped. The control portion ends the neutral control when a torque transmitted to the frictional apply device has been continually equal to, or greater than, a predetermined value for a consecutive predetermined of time. As a result, by considering the torque transmitted to the frictional apply device in addition to the continuation time of the neutral control, it is possible to more precisely grasp the state of the frictional apply device. In other words, it is possible to execute, as quickly as possible, neutral control for an extended period of time while ensuring durability of the frictional apply device.
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Hasegawa Yoshio
Matsubara Tooru
Nakayashiki Makoto
Sakai Takahiro
Tanaka Yoshikazu
Holmes Justin K.
Pang Roger
Toyota Jidosha & Kabushiki Kaisha
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