To meet demand of Euro V emission legislation urea free for HD diesel engine with DMCC. (1st November 2017)

• Record Type: Journal Article
• Authors: Wei, Hongyuan; Yao, Chunde; Pan, Wang; Han, Guopeng; Dou, Zhancheng; Wu, Taoyang; Liu, Meijuan; Gao, Jian; Chen, Chao; Shi, Junjie
• Is Part Of: Fuel. Volume 207(2017)
• Page Start: 33
• Page End: 46
• Publication Date: 2017-11-01
• Subjects: DMCC diesel methanol compound combustion -- HD heavy-duty -- ESC European Steady-state Cycle -- HP EGR high pressure exhaust gas recirculation -- DPOC diesel oxidation catalyst coupled with particulate oxidation catalyst -- SCR selective catalytic reduction -- HC hydrocarbon -- CO carbon monoxide -- NOX nitrogen oxide -- PM particulate matter -- HCHO formaldehyde -- CH3OH methanol -- DMDF diesel methanol dual fuel -- MSR methanol substitution ratio -- ECU electronic control unit -- CA crank angle -- BTDC before top dead center -- CA50 crank angle of 50% accumulated heat release rate -- LTC low temperature combustion -- IC engine internal combustion engine -- F/O equivalence ratio fuel to oxygen equivalence ratio -- HCCI homogeneous charge compression ignition -- PCCI premixed charge compression ignition -- RCCI reactivity controlled compression ignition -- CRDPF continuously regenerating diesel particulate filter -- MII Ministry of Industry and Information -- IARC International Agency for Research on Cancer -- EGR exhaust gas recirculation -- F.S. full scale -- CHN China -- DOC diesel oxidation catalyst -- CO2 carbon dioxide -- NO nitric oxide -- NO2 nitrogen dioxide -- EPA Environmental Protection Agency -- ETC European Transient Cycle -- ELR European Load Response test; Diesel engine -- Diesel methanol compound combustion (DMCC) -- Euro V emission legislation -- DPOC; Fuel -- Periodicals; Coal -- Periodicals; Coal; Fuel; Periodicals; 662.6
• DOI: 10.1016/j.fuel.2017.06.070
• Languages: English
• ISSNs: 0016-2361

Abstract

Highlights: Experiment for HD diesel engine to meet Euro V emission legislation with DMCC was conducted on a Euro IV engine. The application of DMCC and DPOC helped the Euro IV engine to meet the emission limit of Euro V urea free. NOX and PM emissions before DPOC from DMCC Euro V engine have met the demand of Euro V legislation. The increased HC, CO, HCHO and CH3 OH emissions from DMCC engine could be eliminated effectively by DPOC. Abstract: Based on European Steady-state Cycle (ESC) test procedure, an engine test was carried out to meet the demand of Euro V legislation with diesel methanol compound combustion (DMCC) technology on a common-rail, turbocharged, inter-cooling heavy-duty and high pressure exhaust gas recirculation (HP EGR) diesel engine with meeting the requirements of Euro IV legislation. The engine was just modified with DMCC technology and combined with after-treatment device diesel oxidation catalyst coupled with particulate oxidation catalyst (DPOC). The test results show that it can fully meet the demand of Euro V legislation without the help of selected catalyst reduction (SCR). Additionally, the comparative analysis of the dynamic and economic performances between the DMCC Euro V engine and the baseline Euro IV engine was presented in this study. The regulated emissions (included HC, CO, NOX, PM (particulate matter)) and unregulated emissions (included formaldehyde (HCHO) and unburned methanol (CH3 OH)) before and after DPOC from DMCC Euro V engine were also investigated. The dynamic performance of DMCC Euro V engine is basically consistent with the baseline Euro IV engine, while there is a slight deterioration in economic performance at certain operation conditions in terms of calorific value. Compared with the baseline engine before DPOC, the DMCC engine causes an increase in HC, CO, HCHO and CH3 OH emissions, but the NOX and PM emissions are much better. The DPOC efficiency in the conversion rate of HC, CO, HCHO and CH3 OH is over 98% under the whole ESC test procedure, and for PM, the conversion efficiency is only around 21%. However, DPOC has no obvious influence on the conversion of NOX emissions.