Method and device for controllling an injector

Details Method and device for controllling an injector Method and device for controllling an injector

2005-12-02

2008-08-05

Moulis, Thomas N (Department: 3747)

Internal-combustion engines

Charge forming device

With fuel pump

Reexamination Certificate

active

07406952

ABSTRACT:
An injector has a valve pin whose position is adjustable according to the pressure prevailing in a control chamber and which blocks a fluid flow through at least one injection port in a closed position. The injector has a control chamber that is hydraulically coupled to a high-pressure fluid reservoir, a piezo actuator, and a control valve which hydraulically connects and disconnects the control chamber, the piezo actuator acting upon said control valve. A combination of a triggering period for the piezo actuator and electric power that is to be fed to the piezo actuator is varied from a predefined initial combination to a target combination in which a pressure curve is detected that is characteristic of a movement of the control valve out of the closed position thereof without fluid being proportioned through the injection port.

REFERENCES:
patent: 6062489 (2000-05-01), Tokumaru
patent: 6253736 (2001-07-01), Crofts et al.
patent: 6420817 (2002-07-01), Ricci-Ottati et al.
patent: 6478013 (2002-11-01), Boecking
patent: 6491027 (2002-12-01), Freudenberg et al.
patent: 6539925 (2003-04-01), Rueger et al.
patent: 6619268 (2003-09-01), Rueger et al.
patent: 6705291 (2004-03-01), Rueger et al.
patent: 6837221 (2005-01-01), Crofts et al.
patent: 6885131 (2005-04-01), Hirn et al.
patent: 7269500 (2007-09-01), Cochet et al.
patent: 7305971 (2007-12-01), Fujii
patent: 19905340 (1999-02-01), None
patent: 19954023 (1999-11-01), None
patent: 10012607 (2000-03-01), None
patent: 10024662 (2000-05-01), None
patent: 10319530 (2003-04-01), None
patent: 0856654 (1998-02-01), None
patent: 1087120 (2000-09-01), None
patent: 01/63121 (2001-08-01), None
patent: 02/092985 (2002-11-01), None
International Search Report And Written Opinion; PCT/EP2005/056442; 5 pgs.

Affiliated with

Also associated with

Rating

Method and device for controllling an injector does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and device for controllling an injector, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and device for controllling an injector will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4018405