Abstract
In this paper, heavy-duty commercial diesel vehicles were selected for the actual road, vehicle emission test system (PEMS), C-WTVC and CATC test, and each test was connected to the OBD remote monitoring equipment. Through PEMS test and C-WTVC test, the instantaneous fuel consumption data and carbon balance fuel consumption data of OBD remote monitoring equipment are compared within 10%, which proves that OBD remote monitoring has good accuracy. The fuel consumption of the actual road test normalized to CATC is 10.8%-88.0% higher than that of the ministry of industry and information technology type certification, with an average value of 45.1%. The fuel consumption under the normalized C-WTVC condition is 10.1%∼76.6% higher than that under the type approval of the ministry of industry and information technology, with an average value of 40.0% 23.9%. This difference is relatively smaller than that under the normalized to CATC. It is of great significance to correctly guide the development and calibration of vehicles and promote the research and application of vehicle energy conservation and emission reduction technologies suitable for China’s traffic characteristics and actual use characteristics.
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