Interrelated power delivery controls – including engine control – Transmission control – Transmission controlled by engine
Reexamination Certificate
2006-12-22
2009-12-08
Bonck, Rodney H (Department: 3655)
Interrelated power delivery controls, including engine control
Transmission control
Transmission controlled by engine
C477S906000, C475S123000
Reexamination Certificate
active
07628729
ABSTRACT:
A hydraulic control apparatus, provided with a manual shift valve that outputs a forward range pressure and a reverse range pressure, and a linear solenoid valve that outputs an engagement pressure to the hydraulic servo that engages during reverse travel when energized, includes a fourth clutch relay valve that is interposed between the linear solenoid valve and the hydraulic servo. The fourth clutch relay valve communicates an engagement pressure of the linear solenoid valve to the hydraulic servo by locking in the normal position when a signal pressure of the solenoid valve is input, and communicates a reverse range pressure to the hydraulic servo by being switched to a fail position by the reverse range pressure during a failure in which the fourth clutch relay valve is de-energized. Thereby, it is possible to establish a reverse speed during a failure in which the solenoid valve is de-energized.
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PCT International Search Report (PCT/JP 2006/321210).
Fukatsu Akira
Honda Atsushi
Iwase Mikio
Noda Kazuyuki
Nozaki Kazutoshi
Aisin AW Co. Ltd.
Bonck Rodney H
Holmes Justin
Sughrue & Mion, PLLC
Toyota Jidosha & Kabushiki Kaisha
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