Invention Grant
- Patent Title: System and method of detecting hydraulic start-of-injection
- Patent Title (中): 检测液压起动注射的系统和方法
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Application No.: US13361708Application Date: 2012-01-30
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Publication No.: US09010303B2Publication Date: 2015-04-21
- Inventor: Paul Moonjelly , Richard A. Booth , Lester L. Peters , Jeffrey C. Huang , Phanindra V. Garimella
- Applicant: Paul Moonjelly , Richard A. Booth , Lester L. Peters , Jeffrey C. Huang , Phanindra V. Garimella
- Applicant Address: US MN Minneapolis
- Assignee: Cummins Intellectual Property, Inc.
- Current Assignee: Cummins Intellectual Property, Inc.
- Current Assignee Address: US MN Minneapolis
- Agency: Faegre Baker Daniels LLP
- Main IPC: B60T7/12
- IPC: B60T7/12 ; G05D1/00 ; G06F7/00 ; G06F17/00 ; F02D35/02 ; F02D41/00 ; F02D41/22 ; F02D41/40 ; F02D41/14
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 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.
Public/Granted literature
- US20120216777A1 SYSTEM AND METHOD OF DETECTING HYDRAULIC START-OF-INJECTION Public/Granted day:2012-08-30
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