Abstract
The gasoline direct injection (GDI) vehicle was used to conduct WLTC test and real driving emission test respectively at different altitudes simulated through plateau test bench without doing any change to the engine. The results showed that CO emission first increased and then decreased, NOx emission increased, and PN emission first decreased and then increased with the increase of altitude under the condition of WLTC test at an altitude simulated by warehouse. Under the RDE test condition, CO and NOx emissions increased in urban area, CO emission first increased and then decreased and NOx emission first slowly decreased and then increased in motorway and comprehensive areas, and PN emission increased, then decreased and increased again in urban and comprehensive areas with the increase of altitude. CO and PN emissions mainly occurred in highspeed conditions, while NOx emissions mainly occurred in urban conditions. In general, the emission results of CO and PN in comprehensive area were higher than those in urban area, while NOx emission results were just the opposite.
Key words
gasoline vehicle /
real driving emission (RDE) /
plateau /
emission characteristics
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CHENG Liang.
Influence of Altitude on RDE Emission Characteristics of Light Duty Gasoline Vehicle[J]. Vehicle Engine. 2019, 0(6): 78-83
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