Heavy-duty vehicle emission characteristics based on the remote-monitoring three-bin moving-average window method

doi:10.3969/j.issn.1674-8484.2023.03.013

Abstract

Abstract:

A three-bin moving average window (3B-MAW) model was proposed and compared with the work-based window method (WB-WM) to investigate the on-road emission characteristics of heavy-duty vehicles. The invalid data of remote monitoring were mainly composed of the NO_x sensor’s abnormal data and the uploaded data after the engine shutdown. In the 3B-MAW model, each data was attributed to one, two or three bins. The percentage of the three bins were linked to the vehicle’s real driving conditions. In order to gain the emission calculation accuracy and a smaller scale of required data, the value of the four main parameters, i.e., the minimum window number, the window width, the first cut-off and the second cut-off are set around 2 400 s, 300 s, 6% and 20%, respectively. Since the window power threshold is no longer required, the 3B-MAW method is able to capture the low load emission characteristics more effectively, compared to the WB-WM. Therefore, the 3B-MAW method is a more appreciate approach to analyse on-road random driving conditions.

Key words: heavy-duty vehicle, moving average, remote monitoring, work-based window method

CLC Number:

X831

REN Shuojin, ZHANG Chao, LI Gang, LI Tengteng, Yu Quanshun, GUAN Min, JI Zhe, JING Xiaojun. Heavy-duty vehicle emission characteristics based on the remote-monitoring three-bin moving-average window method[J]. Journal of Automotive Safety and Energy, 2023, 14(3): 375-384.

Figures/Tables 19

References 16

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名称	分类	最大总质量 / t	体积排量 / L	额定功率 / kW	M_CO2 / [g·(kW·h)^-1]	数据量 / s
货车1	N2	4.5	2.29	96	670.2	258 196
货车2	N3	18.0	4.58	162	583.9	222 072
货车3	N3	31.0	9.50	289	609.1	739 538
牵引1	N3	18.0	10.52	327	602.7	963 274
牵引2	N3	25.0	12.90	426	552.0	784 589
客车1	M3	16.0	7.80	235	696.4	204 990

名称	分类	最大总质量 / t	体积排量 / L	额定功率 / kW	M_CO2 / [g·(kW·h)^-1]	数据量 / s
货车1	N2	4.5	2.29	96	670.2	258 196
货车2	N3	18.0	4.58	162	583.9	222 072
货车3	N3	31.0	9.50	289	609.1	739 538
牵引1	N3	18.0	10.52	327	602.7	963 274
牵引2	N3	25.0	12.90	426	552.0	784 589
客车1	M3	16.0	7.80	235	696.4	204 990

分区	限值
分区	CARB	WVU
怠速区	CF×IDLE限值	15~45 g/h
低负荷区	CF×LLC限值	0.4 g/(kWh)
中高负荷区	CF×FTP/RMC限值	0.1~0.4 g/(kWh)

分区	限值
分区	CARB	WVU
怠速区	CF×IDLE限值	15~45 g/h
低负荷区	CF×LLC限值	0.4 g/(kWh)
中高负荷区	CF×FTP/RMC限值	0.1~0.4 g/(kWh)

样车	最大总质量 t	排量 L	循环功 kWh	加载 %
1	4.5	2.49	10.0	94.3
2	4.5	2.29	6.7	82.8
3	10.5	5.19	10.5	40.0
4	31.0	7.80	22.3	0.0
5	49.0	13.00	36.0	90.0