Variable valve timing apparatus executing reference position...

Details Variable valve timing apparatus executing reference position... Variable valve timing apparatus executing reference position...

2008-04-22

2008-04-22

Denion, Thomas (Department: 3748)

Internal-combustion engines

Poppet valve operating mechanism

With means for varying timing

C123S090150, C123S090160, C123S090310

Reexamination Certificate

active

11691692

ABSTRACT:
A current value of an intake valve phase calculated based on a sensor output is smoothed along the direction of time axis in accordance with a smoothing factor, whereby a phase detection value is detected. At the time of reference position learning, the smoothing factor is set to a value larger than at the time of normal control, so that the degree of smoothing in the smoothing process of phase detection value becomes smaller. Therefore, it is possible to detect more quickly that the intake valve timing has reached the reference timing at the time of reference position learning based on the phase detection value, than when a common smoothing factor is set both for the normal control and for the reference position learning.

REFERENCES:
patent: 6729280 (2004-05-01), Muraki
patent: 7107951 (2006-09-01), Urushihata et al.
patent: 7308877 (2007-12-01), Izumi et al.
patent: 4-1406 (1992-01-01), None
patent: 2002-138864 (2002-05-01), None
patent: 2003-172160 (2003-06-01), None
patent: 2004-116301 (2004-04-01), None
patent: 2004-156461 (2004-06-01), None
patent: 2004-340013 (2004-12-01), None

Affiliated with

Also associated with

Rating

Variable valve timing apparatus executing reference position... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Variable valve timing apparatus executing reference position..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Variable valve timing apparatus executing reference position... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3941629