Thermal Balance Method for EGR Rate Determination Usable for Real Engine with Uncooled EGR System
2009-01-1114
04/20/2009
- Event
- 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.
- 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.