Valve timing controller

Details Valve timing controller Valve timing controller

2007-07-16

2009-12-15

Eshete, Zelalem (Department: 3748)

Internal-combustion engines

Poppet valve operating mechanism

With means for varying timing

C123S090150, C123S090310

Reexamination Certificate

active

07631623

ABSTRACT:
A valve timing controller includes a driving circuit, a control circuit, and a signal line. Receiving electric power from a power source, the drive circuit drives an electric motor according to the control signal, and outputs the rotative direction signal showing the rotation direction of the electric motor. A controlling circuit outputs the control signal generated according to the rotation-direction signal. A signal line transmits the rotation-direction signal to the controlling circuit from the drive circuit. The drive circuit outputs a high-level signal showing the normal rotation direction, and a low level signal showing the reverse rotation direction of the electric motor. When a power supply voltage falls below to the acceptable value, the drive circuit maintains the voltage level of the signal line at high level.

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Office Action dated Jul. 28, 2009 issued in corresponding Japanese Application No. 2006-225801 with an at least partial English language translation thereof.

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