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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.:

US 9435310 B1

PDFFull Text
Date of Patent:
Sep. 06, 2016

Filed:

Mar. 07, 2013

Hydraulic start-of-injection detecting system and method

Applicant:

Cummins Inc., Columbus, IN (US);

Inventors:

Paul V. Moonjelly, Columbus, IN (US);

Richard A. Booth, Columbus, IN (US);

Jesus Carmona-Valdes, Columbus, IN (US);

Assignee:

CUMMINS INC., Columbus, IN (US);

Attorney:

Faegre Baker Daniels LLP

Primary Examiner:

Hung Q Nguyen

Assistant Examiner:

Brian P Monahon

Int. Cl.
CPC ...
F02M 65/00 (2006.01); F02D 41/40 (2006.01); F02D 35/02 (2006.01); F02D 41/28 (2006.01);
U.S. Cl.
CPC ...
F02M 65/00 (2013.01); F02D 35/023 (2013.01); F02D 35/028 (2013.01); F02D 41/401 (2013.01); F02D 2041/286 (2013.01); F02D 2041/288 (2013.01); F02D 2250/14 (2013.01); F02M 65/005 (2013.01); Y02T 10/44 (2013.01);
Abstract

This disclosure provides system and method that can determine hydraulic start of injection (SOI) in engines using an in-cylinder pressure sensor. The system and method iteratively perform a wavelet transform on a signal based on the pressure information provided by the in-cylinder pressure sensors to determine a detail coefficient corresponding to a frequency band containing frequencies of pressure pulsations excited from a fuel jet injected into the cylinder. Hydraulic SOI is determined at the timing when the amplitude of the determined detail coefficient satisfies a predetermined threshold. The system and method provide diagnostic, control, and/or compensation opportunities for fuel injector operation in high pressure fuel rail engine systems without use of expensive or complex fuel injector components.

Find Patent Forward Citations

Moonjelly, Paul. (2016). Hydraulic start-of-injection detecting system and method (U.S. Patent No. 9435310). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/9435310

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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