DPF carbon load prediction method and device based on XGBOOST algorithm and storage medium

Abstract

The invention relates to a DPF carbon load prediction method and device based on an XGBOOST algorithm and a storage medium. The method comprises the following steps: collecting state data of an engine, wherein the state data comprises carbon load, engine oil pressure, accumulated mileage and accumulated fuel consumption; calculating a mean value, a variance and skewness of the carbon load, and kurtosis of the engine oil pressure in a preset time interval before each historical moment and a logarithm value of the accumulated fuel consumption and a logarithm value of the accumulated mileage at each historical moment, and generating a sample data set according to calculation results; dividing the sample data set into a training set and a test set, training an XGBOOST algorithm model by using the training set, and testing prediction performance of the XGBOOST algorithm model by using the test set to obtain a DPF carbon load prediction model; and according to the state data and the DPF carbon load prediction model, predicting carbon load of the engine at the current moment and at the future moment. According to the method, carbon load of an engine at the future moment can be predicted in advance, so that stop timing is reasonably arranged for active DPF regeneration or ash removal.

Description

technical field [0001] The present application relates to the technical field of diesel vehicle emission monitoring, in particular to a DPF carbon load prediction method, device and storage medium based on the XGBOOST algorithm. Background technique [0002] Part of the air pollution comes from diesel vehicles. The pollutants of diesel engines mainly include particulate matter and nitrogen oxides. Among them, the post-processor of diesel engines mainly controls particulate matter through DPF. DPF is a physical filter. , It will cause the DPF to become clogged and lose its function. After the DPF is clogged, it needs to be cleaned to restore its function. This process is also called "DPF regeneration". [0003] Installing a particle filter (DPF) on a diesel engine to trap particles and burn them at an appropriate time (when the carbon load reaches a certain threshold) to achieve regeneration is an important technical approach to reduce particle emissions from diesel engines. ...

AI Technical Summary

Problems solved by technology

The black smoke (carbon particles) collected in the particle filter is increasing, which will slowly lead to high exhaust back pressure and affect the power of the engine

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