Thermal Balance Method for EGR Rate Determination Usable for Real Engine with Uncooled EGR System

2009-01-1114

04/20/2009

Event
SAE World Congress & Exhibition
Authors Abstract
Content
The presented work deals with an accurate method for the EGR (Exhaust Gas Recirculation) rate determination, which is suitable for the real combustion engines equipped with the uncooled EGR system. A Thermal Balance method (further T.B.) has been proposed for this purpose. It uses differences between EGR (hot gas) and fresh charging air temperatures as a base for the EGR mass fraction determination. This method has been developed and tested on a real engine in authors' laboratory and verified using the well known CO2 method. As it is known that this method is inherently not accurate, the paper deals with a possibility how to improve the method. Measured differences between results from both methods T.B. and CO2 are within 8% in the measured operating range.
Meta TagsDetails
DOI
https://doi.org/10.4271/2009-01-1114
Pages
10
Citation
Miklánek, L., Klír, V., Emrich, M., and Pohořelský, L., "Thermal Balance Method for EGR Rate Determination Usable for Real Engine with Uncooled EGR System," SAE Technical Paper 2009-01-1114, 2009, https://doi.org/10.4271/2009-01-1114.
Additional Details
Publisher
Published
Apr 20, 2009
Product Code
2009-01-1114
Content Type
Technical Paper
Language
English