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:
Oct. 21, 2014
Filed:
May. 20, 2011
Syed S. Jalal, Columbus, IN (US);
Douglas W. Memering, Columbus, IN (US);
Richard E. Reisinger, Columbus, IN (US);
Edward Benjamin Manring, Columbus, IN (US);
Jesus Carmona-valdes, Columbus, IN (US);
Anthony A. Shaull, Columbus, IN (US);
Shankar Venkataraman, Columbus, IN (US);
William David Daniel, Scipio, IN (US);
Syed S. Jalal, Columbus, IN (US);
Douglas W. Memering, Columbus, IN (US);
Richard E. Reisinger, Columbus, IN (US);
Edward Benjamin Manring, Columbus, IN (US);
Jesus Carmona-Valdes, Columbus, IN (US);
Anthony A. Shaull, Columbus, IN (US);
Shankar Venkataraman, Columbus, IN (US);
William David Daniel, Scipio, IN (US);
Cummins Intellectual Property, Inc., Minneapolis, MN (US);
Abstract
This disclosure provides a fuel injector system and method in which the timing of events in during period of fuel injection of a piezoelectric-actuated fuel injector are estimated based on sensed forces within the injector. The force sensor is positioned between a piezoelectric actuator and a hydraulic link assembly mechanically coupled with the piezoelectric actuator, and the force sensor operable to output a signal corresponding to forces between the piezoelectric actuator and the hydraulic link assembly. From information contained in the sensor output signal, timing in the injection period of at least one fueling characteristic based can be estimated to allow for adjusting fuel injector characteristics to compensate for variations affecting fuel injection, such as manufacturing tolerances, environmental conditions, and deterioration/wear.