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首页> 外文期刊>Fuel >Experimental Investigation Of Mineral Diesel Fuel, Gtl Fuel, Rme And Neat Soybean And Rapeseed Oil Combustion In A Heavy Duty On-road Engine With Exhaust Gas Aftertreatment
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Experimental Investigation Of Mineral Diesel Fuel, Gtl Fuel, Rme And Neat Soybean And Rapeseed Oil Combustion In A Heavy Duty On-road Engine With Exhaust Gas Aftertreatment

机译：重型汽油发动机废气后处理中矿物柴油，Gtl燃料，Rme和纯大豆及菜籽油燃烧的实验研究

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摘要

The effects of mineral diesel fuel, gas-to-liquid fuel, rapeseed methyl ester, neat soybean and neat rape-seed oil on injection, combustion, efficiency and pollutant emissions have been studied on a compression ignition heavy duty engine operated near full load and equipped with a combined exhaust gas aftertreatment system (oxidation catalyst, particle filter, selective catalytic NO_x reduction). In a first step, the engine calibration was kept constant for all fuels which led to differences in engine torque for the different fuels. In a second step, the injection duration was modified so that all fuels led to the same engine torque. In a third step, the engine was recalibrated in order to keep the NO_x emissions at an equal level for all fuels (injection pressure, injection timing, EGR rate). The experiments show that the critical NO_x emissions were higher (even behind the exhaust gas aftertreatment systems) for oxygenated fuels in case of the engine not being recalibrated for the fuel. GTL and the oxygenated fuels show lower emissions for some pollutants and higher efficiency after recalibration to equal NO_x levels.
机译：在接近满负荷运行的压燃重载发动机上，研究了矿物柴油，气液燃料，菜籽甲酯，纯大豆和纯菜籽油对喷射，燃烧，效率和污染物排放的影响。配备了组合式废气后处理系统（氧化催化剂，颗粒过滤器，选择性催化还原NO_x）。第一步，所有燃料的发动机标定保持恒定，这导致不同燃料的发动机扭矩不同。在第二步中，修改了喷射持续时间，以使所有燃料都导致相同的发动机扭矩。在第三步中，对发动机进行重新校准，以将所有燃料（喷射压力，喷射正时，EGR率）的NO_x排放保持在相同水平。实验表明，如果未针对发动机重新校准含氧燃料，则临界NO_x排放量会更高（甚至落后于废气后处理系统）。 GTL和含氧燃料对于某些污染物显示出较低的排放量，在重新校准为相等的NO_x水平后，其效率更高。

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