Invention Grant
- Patent Title: Fixed rate EGR system
- Patent Title (中): 固定利率EGR系统
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Application No.: US13239137Application Date: 2011-09-21
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Publication No.: US08904787B2Publication Date: 2014-12-09
- Inventor: Daniel Joseph Styles , James Hilditch , William Charles Ruona
- Applicant: Daniel Joseph Styles , James Hilditch , William Charles Ruona
- Applicant Address: US MI Dearborn
- Assignee: Ford Global Technologies, LLC
- Current Assignee: Ford Global Technologies, LLC
- Current Assignee Address: US MI Dearborn
- Agency: Alleman Hall McCoy Russell & Tuttle LLP
- Agent Julia Voutyras
- Main IPC: F02D41/00
- IPC: F02D41/00 ; F02D9/02 ; F02M25/07 ; F02B37/007 ; F02B29/04

Abstract:
A method is provided for controlling EGR flow in turbocharged engine. The method comprises operating a low-pressure exhaust gas recirculation (LP-EGR) system at a fixed EGR percentage rate of fresh airflow from mid-load down to a minimum engine load, even as load changes. In this way, errors in the delivered LP-EGR rate during transient conditions may be alleviated by providing a fixed EGR percentage of fresh airflow at all engine loads within a fixed mode range.
Public/Granted literature
- US20120023937A1 FIXED RATE EGR SYSTEM Public/Granted day:2012-02-02
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