System and method for detecting engine oil level based on ultrasonic waves

Abstract

The invention discloses a method for detecting the oil level of engine oil based on ultrasonic waves, which comprises the following steps: step S10, after an automobile is powered on, controlling an electronic engine oil sensor to send ultrasonic waves into an engine oil measuring tube and receive echoes; step S11, calculating the oil level of the engine oil in the measuring tube according to the propagation time of the ultrasonic waves received and transmitted by the electronic engine oil sensor; S12, according to the currently measured oil level, determining the current base engine oil amount through measurement reference parameters pre-calibrated by the base rack; S13, recognizing the current working condition of the vehicle, processing and correcting the current basic engine oil amount through a processing strategy corresponding to the current working condition of the vehicle, and finally outputting a stable actual engine oil amount signal; and S14, sending the actual engine oil quantity signal to an instrument for displaying and reminding. The invention further discloses a corresponding system. According to the invention, engine oil quantity detection can be carried out under various working conditions, corresponding correction is carried out, the measurement accuracy is improved, and the application scene is widened.

Description

technical field [0001] The invention relates to engine oil level detection, in particular to a system and method for detecting engine oil level based on ultrasonic waves. Background technique [0002] As the main medium for engine lubrication and heat dissipation, engine oil plays an important role in engine operation. With the development of engine technology, more and more components need to be lubricated, cooled or driven by oil (such as supercharger, EGR, variable oil pump, etc.). Insufficient oil can lead to engine, transmission wear due to lack of lubrication, or other components that are driven by oil will not be able to drive. [0003] However, traditional fuel vehicles and new energy vehicles use oil medium to lubricate, dissipate heat or drive mechanical parts. At present, most domestic models on the market only use oil dipsticks to measure the oil position in the oil pan. A small number of domestic models and most European models Models gradually use electronic ...

AI Technical Summary

Problems solved by technology

[0004] However, the existing electronic oil dipstick measurement has the following shortcomings: it can only be displayed during the running of the vehicle; the measurement data update cycle is long, and the real-time performance is poor; the measurement result is poorly corrected, and it is prone to value jumps

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