Abstract
In this paper, the light duty that meets the China 6 emission standard is selected to study the emission characteristics of different emission control technology routes under China light-duty vehicle test cycle (CLTC). The results show that the cold start stage of CLTC cycle is still the stage with the most pollutant emissions. The THC, CO and NOx emissions of vehicles on the supercharged direct injection technology are higher than those on the naturally aspirated port fuel injection technology. In terms of reducing the exhaust emission, PHEV technology route is the best, followed by naturally aspirated PFI technology route, and then turbocharged direct injection with GPF route.
Highlights
Limits and measurement methods for emission from light duty vehicles (CHINA 6) has already been released in December 23, 2016, and implemented in some parts of the country in July 1, 2019
Compared with the previous emission standards, china 6 standard is basically separated from the European system, at the same level with the European and American standards, and even some places have surpassed the European and American standards, and are in the no man's land of innovation and development
Test cycle is a benchmark working condition for detecting vehicle exhaust emissions. It has a direct impact on research and development, test and certification of vehicle. whether the test cycle can reflect the actual operation of the vehicle directly affects the development direction of vehicle emission control technology
Summary
Limits and measurement methods for emission from light duty vehicles (CHINA 6) has already been released in December 23, 2016, and implemented in some parts of the country in July 1, 2019. Test cycle is a benchmark working condition for detecting vehicle exhaust emissions. It has a direct impact on research and development, test and certification of vehicle. Whether the test cycle can reflect the actual operation of the vehicle directly affects the development direction of vehicle emission control technology. WLTC (World Light Vehicle Test Cycle) from European standard is adopted in the test cycle of China 6. Therefor WLTC can't really reflect the actual driving situation of Chinese vehicles. CLTC provides more options for measuring emissions and fuel consumption that is consistent with China's actual driving conditions
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