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首页> 外文会议>SAE International Powertrains, Fuels Lubricants Meeting >Evaluation of a Gasoline Particulate Filter to Reduce Particle Emissions from a Gasoline Direct Injection Vehicle
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Evaluation of a Gasoline Particulate Filter to Reduce Particle Emissions from a Gasoline Direct Injection Vehicle

机译：评价汽油颗粒过滤器以减少汽油直喷辆颗粒排放

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Gaseous compounds, particle number and size distribution measurements on a gasoline direct injection (GDI) vehicle and a port fuel injection (PFI) vehicle were conducted over the U.S. Federal Test Procedure 75 (FTP-75) and US06 Supplemental Federal Test Procedure (US06) on Tier 2 certification gasoline (E0) and a 10% by volume ethanol (E10). Overall the GDI test vehicle was observed to have lower fuel consumption than the PFI test vehicle by 6% and 3% for the FTP-75 and US06 drive cycles, respectively. When using E10, this GDI vehicle had a better fuel consumption than the PFI vehicle by 7% and 5% for the FTP-75 and US06 drive cycles, respectively. For particle emissions, the solid particle number emission rates for the GDI, equipped with a 3-way catalyst in its original equipment manufacturer configuration (i.e., stock GDI), were 10 and 31 times higher than the PFI vehicle for the FTP-75 and US06 drive cycles, respectively. However, when a non-catalyzed gasoline particulate filter (GPF) was installed, the solid particle number emission rates were only 2 and 8 times higher than that from the PFI vehicle. For the GDI vehicle, the number-weighted geometric mean particle diameters over both FTP-75 and US06 cycles were in the range of 50-70 nm. The situation was similar for the PFI vehicle over the FTP-75, however, over the US06, most of the emitted particles were ultrafine particles with a diameter of about 10 nm. E10 had little impact on particle diameter for both the GDI and PFI vehicles. The use of E10 fuel generally led to a reduction in particle number emissions on the PFI vehicle over both cycles. For the GDI vehicle, the use of E10 led to a reduction in particle emissions over the FTP-75 but the opposite was observed for the US06 drive cycle. Based on the test results, the unconditioned GPF had a particle filtration efficiency of 82 and 76% for the FTP-75 and US06 cycles, respectively. Results also revealed that the GPF filtration efficiency was strongly linked to the exhaust temperature and continued soot regenerations were the reason for the lower filtration efficiency being observed for the US06 drive cycle.
机译：对汽油直喷（GDI）车辆的气态化合物，粒子数和尺寸分布测量和港口燃料喷射（PFI）车辆进行了美国联邦测试程序75（FTP-75）和US06补充联邦测试程序（US06）在Tier 2认证汽油（E0）和10％乙醇（E10）上。总体而言，GDI试验载体分别观察到FTP-75和US06驱动循环的PFI试验载体比PFI试验载体更低的燃料消耗量为6％和3％。当使用E10时，该GDI车辆的燃料消耗比PFI车辆更好，而FTP-75和US06驱动循环分别比PFI车辆达到7％和5％。对于颗粒排放，GDI的固体粒子数排放率，配备了在其原始设备制造商配置（即股票GDI）中的三通催化剂，比FTP-75的PFI车辆高10％和31倍。 US06驱动周期。然而，当安装非催化的汽油颗粒过滤器（GPF）时，固体颗粒数发射率仅比PFI载体高出2和8倍。对于GDI车辆，FTP-75和US06循环上的数量加权几何平均粒子直径在50-70nm的范围内。对于FTP-75，PFI车辆的情况类似，然而，在US06上，大多数发射的颗粒是直径约10nm的超细颗粒。 E10对GDI和PFI车辆的粒径几乎没有影响。 E10燃料的使用通常在两个循环上导致PFI车辆上的粒子数排放的降低。对于GDI车辆，E10的使用导致FTP-75的颗粒排放的降低，但是对于US06驱动循环观察到相反。基于测试结果，无条件的GPF分别具有82和76％的颗粒过滤效率，分别为FTP-75和US06循环。结果还表明，GPF过滤效率与排气温度强烈连接，持续的烟灰再生是为US06驱动循环观察到较低过滤效率的原因。

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