Position sensor of a valve actuator for an internal...

Details Position sensor of a valve actuator for an internal... Position sensor of a valve actuator for an internal...

2007-03-13

2007-03-13

Chang, Ching (Department: 3748)

Internal-combustion engines

Poppet valve operating mechanism

Electrical system

C251S129010, C251S129050, C324S207170

Reexamination Certificate

active

11100057

ABSTRACT:
A sensor of the position of a target is secured to an electromagnetic or electromechanical valve actuator of an internal combustion engine. The target is driven by a reciprocating translatory motion (f+, f−) in synchronism with that of the valve. The sensor uses an eddy current transducer, including two secondary coils connected in series opposition and a primary coil fed by a radio frequency current. The output signal of the transducer is sent to a phase locked loop synchronous detector. The coils are engraved or printed on a flexible film. The transducer is arranged in an external tube made of aluminum and includes an internal wall made of insulating material.

REFERENCES:
patent: 4100480 (1978-07-01), Lytle et al.
patent: 6397798 (2002-06-01), Fiaccabrino
patent: 6642711 (2003-11-01), Kawate et al.
patent: 6681728 (2004-01-01), Haghgooie et al.
patent: 2002/0097042 (2002-07-01), Kawate et al.
patent: 3329515 (1985-03-01), None
patent: 3602107 (1987-07-01), None
David S. Nyce, “Linear Position Sensors”, Jan. 21, 2004, John Wiley & Sons, ONLINE, XP002312335, ISBN: 0-471-23326-9, Extrait de l'Internet: URL: http://www3.interscience.wiley.com/cgi-gin/booktoc/107063525/> * pp. 94-108; figure 6.7.
Int'l Search Report for FR 0403617/FA 648983.
EPO Search Report for App. No. EP 05 30 0178.

Affiliated with

Also associated with

Rating

Position sensor of a valve actuator for an internal... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Position sensor of a valve actuator for an internal..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Position sensor of a valve actuator for an internal... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3721647