Combined Low and High Pressure EGR for Higher Brake Efficiency with Partially Premixed Combustion

2017 ◽  
Author(s):  
Erik Svensson ◽  
Lianhao Yin ◽  
Per Tunestal ◽  
Martin Tuner
Keyword(s):  
High Pressure ◽  
Premixed Combustion ◽  
Partially Premixed Combustion ◽  
Partially Premixed

Combustion stability study of partially premixed combustion by high-pressure multiple injections with low-octane fuel

2019 ◽  
Vol 248 ◽  
pp. 626-639 ◽  
Author(s):  
Yanzhao An ◽  
Qinglong Tang ◽  
Raman Vallinayagam ◽  
Hao Shi ◽  
Jaeheon Sim ◽  
...  
Keyword(s):  
High Pressure ◽  
Stability Study ◽  
Premixed Combustion ◽  
Combustion Stability ◽  
Multiple Injections ◽  
Partially Premixed Combustion ◽  
Partially Premixed

Effects of porous media on partially premixed combustion and heat transfer in meso-scale burners fuelled with ethanol

Energy ◽  
2021 ◽  
pp. 120191
Author(s):  
Xinjian Chen ◽  
Junwei Li ◽  
Dan Zhao ◽  
Muhammad Tahir Rashid ◽  
Xinyuan Zhou ◽  
...  
Keyword(s):  
Heat Transfer ◽  
Porous Media ◽  
Premixed Combustion ◽  
Partially Premixed Combustion ◽  
Partially Premixed ◽  
Meso Scale

Effects of Different Type of Gasoline Fuels on Heavy Duty Partially Premixed Combustion

2009 ◽  
Vol 2 (2) ◽  
pp. 71-88 ◽  
Author(s):  
Vittorio Manente ◽  
Bengt Johansson ◽  
Per Tunestal ◽  
William Cannella
Keyword(s):  
Premixed Combustion ◽  
Heavy Duty ◽  
Partially Premixed Combustion ◽  
Partially Premixed

Characterization of Partially Premixed Combustion With Ethanol: EGR Sweeps, Low and Maximum Loads

2010 ◽  
Vol 132 (8) ◽  
Author(s):  
Vittorio Manente ◽  
Bengt Johansson ◽  
Pert Tunestal
Keyword(s):  
High Efficiency ◽  
Pressure Rise ◽  
Premixed Combustion ◽  
Maximum Pressure ◽  
Pressure Rise Rate ◽  
Start Of Injection ◽  
Partially Premixed Combustion ◽  
Rise Rate ◽  
Partially Premixed ◽  
Gas Recirculation

Exhaust gas recirculation (EGR) sweeps were performed on ethanol partially premixed combustion (PPC) to show different emission and efficiency trends as compared with diesel PPC. The sweeps showed that when the EGR rate is increased, the efficiency does not diminish, HC trace is flat, and CO is low even with 45% of EGR. NOx exponentially decreases by increasing EGR while soot levels are nearly zero throughout the sweep. The EGR sweeps underlined that at high EGR levels, the pressure rise rate is a concern. To overcome this problem and keep high efficiency and low emissions, a sweep in the timing of the pilot injection and pilot-main ratio was done at ∼16.5 bars gross IMEP. It was found that with a pilot-main ratio of 50:50, and by placing the pilot at −60 with 42% of EGR, NOx and soot are below EURO VI levels; the indicated efficiency is 47% and the maximum pressure rise rate is below 10 bar/CAD. Low load conditions were examined as well. It was found that by placing the start of injection at −35 top dead center, the efficiency is maximized, on the other hand, when the injection is at −25, the emissions are minimized, and the efficiency is only 1.64% lower than its optimum value. The idle test also showed that a certain amount of EGR is needed in order to minimize the pressure rise rate.

scholarly journals Hybrid transported-tabulated chemistry for partially premixed combustion

2019 ◽  
Vol 179 ◽  
pp. 206-227 ◽  
Author(s):  
Bastien Duboc ◽  
Guillaume Ribert ◽  
Pascale Domingo
Keyword(s):  
Premixed Combustion ◽  
Partially Premixed Combustion ◽  
Tabulated Chemistry ◽  
Partially Premixed
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