Abstract
Basing on the experimental study of fuel consumbtion in World-wide Harmonized Light-duty Test Cycle (WLTC ), this paper conducted the effects of using different immersion temperature on the fuel consumption of a light-duty gasoline vehicle. The study mainly studied the first phase of WLTC with three gaseous pollutant emissions: carbon dioxide, carbon monoxide and unburned hydrocarbon(CO2, CO and HC )which is measured to caculate the fuel consumption of Light-duty Gasoline Vehicles. It appears that with the increase of time the working condition of the vehicle tends to be stable resulting in the similar emission of the gaseous pollutant in the different test. Which means the immersion temperature mainly effects gaseous pollutant emissions in low-speed phase in WLTC. Besides, the cold start of engine had generated a large quantity of carbon monoxide and unburned hydrocarbon, but it is different for the carbon dioxide which was generated continuously in the first whole phase. The study also found that the use of a higher immersion temperatures (26℃) is more favorable than a lower immersion temperatures (23℃) in the typy of testing vehicle’s fuel consumption in the WLTC test cycle.
Highlights
In recent years, with the development of China's road traffic and the further promotion of the trend of automobile growth, the number of motor vehicles in China has reached 330 million by the end of March 2019, including 246 million vehicles
There are few studies on the influencing factors of fuel consumption of ligh-dutyt vehicles under wide Harmonized Light-duty Test Cycle (WLTC) working condition in the certification process, in the meantime, there is a wide range of immersion temperature required by GB 18352.6-2016 [3], P49, The temperature control target of the immersion zone is 23 . °C, and the allowable actual deviation is ± 3°C So this article takes a look into he influence of different immersion temperature on the fuel consumption of a light-duty vehicle
Load the resistance on the chassis dynamometer according to the coast down that had been down the day before the official test, and test the vehicle according to the WLTC working condition
Summary
With the development of China's road traffic and the further promotion of the trend of automobile growth, the number of motor vehicles in China has reached 330 million by the end of March 2019, including 246 million vehicles. The total number and growth of motor vehicles rank first in the world. In order to ensure the sustainable development of the whole social economy, it is imperative to reduce automobile fuel consumption. °C, and the allowable actual deviation is ± 3°C So this article takes a look into he influence of different immersion temperature on the fuel consumption of a light-duty vehicle There are few studies on the influencing factors of fuel consumption of ligh-dutyt vehicles under WLTC working condition in the certification process, in the meantime, there is a wide range of immersion temperature required by GB 18352.6-2016 [3], P49, The temperature control target of the immersion zone is 23 . °C, and the allowable actual deviation is ± 3°C So this article takes a look into he influence of different immersion temperature on the fuel consumption of a light-duty vehicle
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