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:
Aug. 07, 2018
Filed:
Dec. 15, 2016
Applicant:
Caterpillar Inc., Peoria, IL (US);
Inventors:
Assignee:
Caterpillar Inc., Deerfield, IL (US);
Primary Examiner:
Int. Cl.
CPC ...
F16K 37/00 (2006.01); F02M 65/00 (2006.01); F02M 63/00 (2006.01); F02M 21/02 (2006.01);
U.S. Cl.
CPC ...
F02M 65/005 (2013.01); F02M 21/02 (2013.01); F02M 63/0015 (2013.01); F02M 63/0054 (2013.01); F16K 37/0041 (2013.01); F02D 2200/063 (2013.01); Y10T 137/8242 (2015.04);
Abstract
A system for detecting valve seating in a valve system such as a fuel admission valve system includes seat detection circuitry coupled with a low-side driver circuit in solenoid actuator circuitry for the valve system. The seat detection circuitry includes a voltage probe for sensing voltage in the solenoid actuator circuitry, delay circuitry, and a comparator coupled with the delay circuitry and the voltage probe and having an output dependent upon change in the sensed voltage over time. A timing of voltage changes is observed to enable valve seating detection.