Study on the influence of different test cycles on vehicle emission and fuel consumption

Abstract

In order to satisfy regulations of CHINA 6 and the corresponding standards of fuel consumption, a variety of advanced technology are adopted. While manufacture calibrate engine based on WLTC and NEDC test cycle during development process, and the technical route is still a lack of a large number of test research on CLTC. This article firstly investigates mainstream technology on market, then in-depth study influence of different test cycle on emissions and fuel consumption, comparing difference of test data to evaluate the potential of each technology route for emission and fuel economy, as well as the adaptability of each technology route under CLTC. Finally, to seek the advanced technology route of energy-saving and emission reduction applicable to national conditions.

Methodology to Evaluate CO2 Emissions of Light-Duty Vehicle for Real-World Driving from Multiple Laboratory Testing

“…Based on this background, the MIIT (Ministry of Industry and Information Technology) of China developed its own driving cycle named CLTC-P (China Light-duty Vehicle Test Cycle) for fuel consumption certi cation in 2015 (Liu et al 2020), which would be used to measure CO 2 emissions.. Wang et al (2022c) found that the average deviation of fuel consumption under the NEDC was 22%, under the WLTC was 17%, and under the CLTC-P was 10% when examining the average fuel consumption of various models from users through the platform 'Bear Check Fuel Consumption'. This indicated that the CLTC-P has more realistic and transient tra c patterns, making it more suitable for Chinese roads.…”