MATEC Web Conf.
Volume 118, 2017VII International Congress on Combustion Engines
|Number of page(s)||5|
|Published online||24 July 2017|
The influence of engine warm up phase on nitrogen oxides emission for heavy-duty Euro VI diesel engine
Automotive Research and Development Institute BOSMAL, ul Sarni Stok 93, 43-300, Bielsko-Biała, Poland
* Corresponding author: firstname.lastname@example.org
This article presents test results achieved under World Harmonized Transient Driving Cycle (WHTC) run on heavy-duty diesel engine compliant with Euro VI standard. The emission cycle was performed both for cold and hot engine start up conditions. Modal analysis of emission compounds was carried out with the focus on nitro-gen oxides (NOx) emission. The scope of the work was to assess the influence of cold start effect on selective catalytic reduction (SCR) system operation efficiency. Due to the fact that the urea injection strategy in SCR system can by activated only after certain exhaust gas temperature threshold is achieved, the NOx emission on WHTC cold start cycle is significantly greater than for the hot start one. Result analysis included also determination of time period needed for achieving the readiness of SCR system to work efficiently. The occurrence of ammonia slip emissions downstream SCR was also monitored.
© The Authors, published by EDP Sciences, 2017
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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