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- W2973055962 abstract "An experimental investigation was conducted in a direct-injection (DI) diesel engine to investigate the effect of different post-injection strategies on combustion and regulated/unregulated exhaust emissions. Various exhaust emissions at different post-injection timings and quantities were measured and analyzed by FTIR, including common regulated emissions and certain unregulated emissions, such as aromatic hydrocarbon (AHC), acetylene (C2H2), propane (C3H6), and n-octane (NC8). Experimental research showed that the addition of post-injection can significantly reduce NOx emissions compared to no post-injection condition, with a maximum reduction of 26.7%. Meanwhile, NOx emissions had obvious trade-off relation with soot particulate, CO and light hydrocarbons (HC) emissions under the post-injection condition. Further, the CO and light HCs emissions was slightly increased when the post-injection quantity was increased from 10 mg to 15 mg. A delay in the peak of higher emissions was observed form 60° crank angle (CA) to 80 °CA between fuel cracked and uncracked components. In addition, under most operation conditions, post-injection could provide more light HCs and THC for the after-treatment equipment, with the THC emissions up to 4911 ppm. However, soot emissions were not sensitive to post-injection timing compared to other emissions, except for the early post-injection timing at 20 °CA. Overall, an appropriate quantity and timing of post-injection could have a positive effect on pollutant emissions reduction from the perspective of the exhaust pollutants in this DI diesel engine." @default.
- W2973055962 created "2019-09-19" @default.
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- W2973055962 date "2019-12-01" @default.
- W2973055962 modified "2023-10-16" @default.
- W2973055962 title "Effect of post-injection on combustion and exhaust emissions in DI diesel engine" @default.
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- W2973055962 doi "https://doi.org/10.1016/j.fuel.2019.116131" @default.
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