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For the additional fuel consumption and pollutant emissions caused by heavy-duty vehicle air conditioning, this paper analyzes the effects of turning on or off air conditioning on fuel consumption and pollutant emissions under different temperature conditions. Dynamometer test is performed based on China Heavy-duty commercial vehicle Test Cycle (CHTC). The test results show that the additional fuel consumption of the air conditioning is about 7% under high temperature, 5% higher than that under normal temperature. The larger the weight of a heavy-duty vehicle, the smaller the impact of the air conditioning system on fuel consumption. Turning on the air conditioning can reduce NOx emission, and NOx emission under high temperature is lower than that under normal temperature. Turning on the air conditioning will cause an increase of Particle Number (PN) and CO2 emissions.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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