Ten light-duty vehicles with different
fuel and power types that meet the requirements of China Ⅵ-b stage were selected as research objects, including plug-in hybrid, extended-range hybrid, gasoline
vehicle, diesel vehicle, and natural gas vehicle. WLTC cycles of plain and
plateau were conducted under controlled ambient temperatures in the light-duty vehicle environmental simulation emission laboratory in Ningbo
and Kunming, and the emission characteristics of light-duty
vehicle pollutants in plateau environment and the influencing factors were
studied and analyzed. The results show that, compared to pre-calibration levels, all pollutant emissions of plug-in hybrid electric vehicles in charge depleting(CD) mode reduce to
varying degrees and meet the China Ⅵ-b phase limits
specified in GB〓18352.6—2016
after plateau emission calibration. The emissions of various pollutants from
plug-in hybrid and extended-rang
hybrid vehicles are generally lower than those from light-duty vehicles for gasoline, diesel and natural gas. The change in
REESS power during the power retention stage affects the overall vehicle
pollutant emissions. The emissions of CO, CO2, THC, NOx and PN from light-duty vehicles of different fuels and power types are predominantly
concentrated during the cold start stage. CO2
emissions directly correlate with vehicle operating conditions, exhibiting
increased levels during all acceleration segments under WLTC testing.
WANG Jiguang, YU Hongxiu, YANG Xi, LI Jiaqiang, GU Wangwen, WANG Li
. Pollutant Emission Characteristics of Light-duty
Vehicle in Plateau Environment[J]. Vehicle Engine, 2025
, 0(3)
: 54
-59
.
DOI: 10.3969/j.issn.1001-2222.2025.03.008
