System and method of detecting hydraulic start-of-injection

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United States of America Patent

PATENT NO 9719457
SERIAL NO

14690648

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Abstract

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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 determine apparent heat release rate (AHRR) curve data for the cylinder from the pressure information provided by the in-cylinder pressure sensors, and the hydraulic SOI from the derivative of the AHRR curve data. 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.

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Patent Owner(s)

Patent OwnerAddress
CUMMINS INTELLECTUAL PROPERTY INCMINNEAPOLIS MN

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Booth, Richard A Columbus, US 34 94
Garimella, Phanindra Bloomington, US 21 495
Huang, Jeffrey C Greenwood, US 8 101
Moonjelly, Paul V Columbus, US 20 95
Peters, Lester L Columbus, US 77 1876

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