The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 03, 2006
Filed:
Jun. 05, 2003
Michele Petrone, San Lazzaro Di Savena, IT;
Luca Mancini, Bologna, IT;
Massimo Mattioli, Castelmaggiore, IT;
Michele Petrone, San Lazzaro Di Savena, IT;
Luca Mancini, Bologna, IT;
Massimo Mattioli, Castelmaggiore, IT;
Magneti Marelli Powertrain S.p.A., Corbetta, IT;
Abstract
A method for controlling a fuel injector provided with an electrically operated electomagnetic actuator in such a manner as to open the injector for a determined injection time; the method providing that the injector be operated with a first current waveform if the injection time is greater than a predetermined threshold value, and that the injector be operated with a second current waveform if the injection time is less than the predetermined threshold value; both the current waveforms have an identical initial portion, during which the current passing through the injector is caused to rise until it reaches a peak value, which is maintained by cyclic switching of the voltage applied to the injector between two different values.