A Study on High-Accuracy Test Method for Fuel Consumption of Heavy-Duty Diesel Vehicles Considering the Transient Characteristics of Engines

2016 ◽  
Vol 9 (2) ◽  
pp. 383-391 ◽  
Author(s):  
Norifumi Mizushima ◽  
Kyohei Yamaguchi ◽  
Daisuke Kawano ◽  
Hisakazu Suzuki ◽  
Hajime Ishii
Keyword(s):  
Fuel Consumption ◽  
High Accuracy ◽  
Test Method ◽  
Heavy Duty ◽  
Transient Characteristics ◽  
Diesel Vehicles ◽  
Accuracy Test ◽  
Heavy Duty Diesel

scholarly journals NOx Emissions from Euro 5 and Euro 6 Heavy-Duty Diesel Vehicles under Real Driving Conditions

Energies ◽  
2020 ◽  
Vol 13 (1) ◽  
pp. 218 ◽  
Author(s):  
Sangchul Ko ◽  
Junhong Park ◽  
Hyungjun Kim ◽  
Gunwoo Kang ◽  
Jongchul Lee ◽  
...  
Keyword(s):  
Moving Average ◽  
Test Methods ◽  
Test Method ◽  
Emission Measurement ◽  
Nox Emissions ◽  
Vehicle Speed ◽  
Heavy Duty ◽  
Diesel Vehicles ◽  
Gross Vehicle Weight ◽  
Heavy Duty Diesel

Despite the strengthening of vehicle emissions standards and test methods, nitrogen oxide (NOx) emissions from on-road mobile sources are not being notably reduced. The introduction of real driving emission (RDE) regulations is expected to reduce the discrepancy between emission regulations and actual air pollution. To analyze the effects of RDE regulations on heavy-duty diesel vehicles, pollutants emitted while driving were measured using a portable emission measurement system (PEMS) for Euro 5 and Euro 6 vehicles, which were produced before and after RDE regulations, respectively. NOx emissions were compared as a function of emissions allowance standards, gross vehicle weight (GVW), average vehicle speed, and ambient temperature. NOx emissions from Euro 6 vehicles were found to be low, regardless of GVW; emissions from both vehicular categories increased with a decline in the average speed. To reflect real road driving characteristics more broadly in the RDE test method for heavy-duty vehicles, it is necessary to consider engine power, which is a criterion for classifying effective sections, in the moving average window (MAW) analysis method, as well as including cold start conditions.

Sign in / Sign up

Export Citation Format

Share Document