Valve timing controller

Details Valve timing controller Valve timing controller

Filed on

2005-10-11

Date issued

2005-10-11

Examiner

Denion, Thomas (Department: 3748)

Patent Class

Internal-combustion engines

SubClass

Poppet valve operating mechanism

SubSubClass

With means for varying timing

Other Related Categories

C123S090150, C123S090310

Type

Reexamination Certificate

Status

active

Patent number

06953013

Description

ABSTRACT:
A valve timing controller is driven by a motor and has a control circuit and a driving circuit. The driving circuit drives the motor according to a target rotation speed which is represented by a control signal frequency generated by the control circuit. Accordingly as the frequency becomes higher, the target rotation speed increases. When the frequency of the control signal is either lower than or equal to a first threshold frequency, or higher than or equal to a second threshold, the first threshold frequency being greater than zero and being greater than the second threshold frequency, the driving circuit stops supplying current to the motor.

REFERENCES:
patent: 4873453 (1989-10-01), Schmerda et al.
patent: 6138622 (2000-10-01), Heer
patent: 6843344 (2005-01-01), Kodama et al.
patent: U-4-105906 (1992-09-01), None
patent: A-8-317679 (1996-11-01), None

Affiliated with

Also associated with

Rating

Valve timing controller does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Valve timing controller, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Valve timing controller will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3468449