Diesel engine commercial vehicle re-evaluation method

The invention discloses a diesel engine commercial vehicle load re-evaluation method, relates to the technical field of vehicle load monitoring, and solves the technical problem of inaccurate load estimation, and the method comprises the following steps: an Internet of Vehicles platform receives and stores engine data collected and uploaded by a vehicle-mounted terminal in real time; performing time breakpoint, parking and idle speed marking on data of each engine according to the vehicle speed, the rotating speed and the acquisition timestamps, and generating road spectrum fragment slices; according to the road spectrum fragment slice of each engine, generating road spectrum slice data for each engine every day by using a big data off-line processing engine; checking the fuel consumption value of each segment in the road spectrum slice data of a certain engine, and obtaining a stable driving cycle segment of the vehicle; selecting fuel consumption values per hundred kilometers from all historical road spectr