Impact of Ambient Temperature on Fuel Consumption and Emissions During Real Road Driving of Heavy-duty Diesel Vehicles
A vehicle model with a 6.234L diesel engine meeting the China VI emission standards was selected,and real-road tests were conducted under ambient temperatures of-10℃,25℃,and 40℃on an engine dynamometer.The impact of ambient temperature on fuel consumption and emissions during actual road driving was analyzed and compared.The results show that as the ambient temperature increases,cyclic fuel consumption increases and the difference in cyclic fuel consumption between cold and hot start decreases.With higher ambient temperature,NOx and THC emissions de-crease,CO2 emissions increase,and the patterns of PN emissions in cold starting cycle is not obvious,while CO emissions decrease.PN emissions during hot start cycle increase and CO emissions remain relatively consistent.Cold start results in increased fuel consumption,as well as increased CO,CO2,NOx,and THC emissions.
Diesel engineAmbient temperatureEngine in the loopReal road
NETL
NSTL
万方数据
维普
