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Model Based EGR Control

  • Almost stationary control of the correct EGR rate (Exhaust Gas Recirculation) is state of the art. More aggressive emission tests such as WLTP and RDE require a dynamic control of the EGR rate, otherwise a too low EGR rate results in increased NOx emissions, a too high EGR rate in particulate emissions. The difficulty in any EGR control is the missing plant knowledge; the EGR rate is controlled although the present EGR rate is not exactly known. EGR flow sensors are available, but due to additional costs they have not found a broad acceptance. A different approach for high pressure EGR investigated in this paper is a control using a second lambda sensor between EGR and inlet valves. This approach improves the dynamic response, but it might come with costs similar to an EGR flow sensor. Alternatively a model based approach can be used which shows high potential.

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Metadaten
Author:Kai BorgeestORCiD, Patrik Höfer, Michael Seubert, Simon Stein
Parent Title (English):Proceedings of the Fev Diesel Powertrains 3.0, July 11th & 12th 2017
Publisher:FEV
Place of publication:Aachen
Document Type:Conference Proceeding
Language:English
Year of Completion:2017
Date of first Publication:2017/07/11
Release Date:2018/02/07
Tag:Exhaust Gas Recirculation
GND Keyword:Abgasrückführung
First Page:64
Last Page:66
Urheberrecht:0
research focus :Intelligent Systems / Electronics and Electric Drives
Intelligent Systems / Intelligent Mobility
Licence (German):Keine Lizenz - es gilt das deutsche Urheberrecht
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