Hybrid electric vehicle speed reducer load spectrum compilation method, medium and equipment

Abstract

The invention discloses a hybrid electric vehicle speed reducer load spectrum compilation method, medium and equipment, and the method comprises the steps: obtaining vehicle load data, carrying out the preprocessing, and carrying out the classification according to a power source mode and a road working condition; calculating the load data characteristic parameters according to the classification result, determining the optimal sample number of the hybrid electric vehicle under various working conditions, further determining the speed reducer torque load samples under various road working conditions, and obtaining the optimal sample loads of an engine and a driving motor on a speed reducer after superposition; carrying out the rain flow counting statistics on the optimal sample load of the speed reducer through a rain flow counting method to obtain a rain flow matrix, obtaining an extrapolated rain flow matrix after extrapolation, namely, a full-life two-dimensional load spectrum of the corresponding automobile speed reducer, and finally, after the two-dimensional load spectrum is converted into a one-dimensional load spectrum, adopting a load spectrum compilation method, and generating a load spectrum of the speed reducer of the hybrid electric vehicle. The speed reducer load spectrum compilation can be carried out on the hybrid electric vehicle under the changeable and complex working conditions.

Description

technical field [0001] The invention belongs to the technical field of engineering machinery, and in particular relates to a method, medium and equipment for preparing a load spectrum of a reducer of a hybrid electric vehicle. Background technique [0002] With the rapid development of the economy, the sales of hybrid electric vehicles in my country, as an important transitional product for the development of new energy vehicles, have maintained rapid growth, and they are the new energy vehicle products with the best user experience at the current stage. In the process of vehicle development, it is necessary to conduct strength and fatigue tests on the transmission system, and the load spectrum is the basis for the reliability design of components. [0003] The current research on hybrid electric vehicles is mainly to improve the thermal efficiency of the engine or optimize the design of the reducer, but there are few studies on the fatigue life of the reducer of hybrid elec...

AI Technical Summary

Problems solved by technology

However, for hybrid electric vehicles, which have only begun to be vigorously developed in recent years, there are relatively few studies on the fatigue durability of their transmission systems, and there are few studies on the preparation method and application of the load spectrum of the core component reducer.

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