Internal-combustion engines – Poppet valve operating mechanism – Electrical system
Patent
1996-08-08
1998-01-27
Lo, Weilun
Internal-combustion engines
Poppet valve operating mechanism
Electrical system
25112901, F01L 120, F01L 904
Patent
active
057112592
ABSTRACT:
A method of measuring a valve play in a reciprocating valve. The valve has open and closed positions and is operated by an electromagnetic actuator which includes an opening electromagnet, a closing electromagnet, an armature movable between pole faces by electromagnetic forces against a spring force of a return spring arrangement for moving the valve into an open position. The valve play is defined by a clearance between the armature and the valve when the armature is in contact with the pole face of the closing magnet and the valve is in the closed position. The method includes the steps of detecting a motion of the armature within the clearance as a function of the course of voltage and/or current in the closing electromagnet; and deriving the size of the valve play from an irregularity (spike) in the course of voltage and/or current. The irregularity is caused by an impacting of the armature on the valve and/or the pole face of the closing electromagnet.
REFERENCES:
patent: 4719882 (1988-01-01), Kreuter
patent: 5080323 (1992-01-01), Kreuter
patent: 5269269 (1993-12-01), Kreuter
Pischinger Franz
Pischinger Martin
Schmitz Gunter
FEV Motorentechnik GmbH & Co. KG
Lo Weilun
LandOfFree
Method of measuring a valve play of an engine-cylinder valve ope 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 of measuring a valve play of an engine-cylinder valve ope, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of measuring a valve play of an engine-cylinder valve ope will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-335166