Air leakage diagnosis method, device and equipment for engine air inlet pipeline

Abstract

The invention discloses an air leakage diagnosis method, device and equipment for an engine air inlet pipeline. Parameter items collected by a sensor preset in the air inlet pipeline are obtained, the air inlet pipeline comprises a high-pressure pipeline and a low-pressure pipeline, the sensor is arranged at the air outlet end of an air filter, and the parameter items indicate the air inlet flow of air flowing through the air filter. When it is detected that an engine is in the idling state and the value of the air inlet flow is larger than a first preset threshold value, a user is reminded of air leakage of the high-pressure pipeline. When it is detected that the engine is in the idling state and the value of the air inlet flow is smaller than a second preset threshold value, the user is reminded of air leakage of the low-pressure pipeline, and the second preset threshold value is smaller than the first preset threshold value. By means of the scheme, the accuracy of air leakage diagnosis of the engine air inlet pipeline can be effectively improved, and the air leakage diagnosis method, device and equipment for the engine air inlet pipeline can be suitable for different types of engines produced by different manufacturers, and high applicability is achieved.

Description

technical field [0001] The present application relates to the field of engine detection, and in particular to a method, device and equipment for diagnosing air leakage of an engine intake pipeline. Background technique [0002] Diesel engine air intake pipeline leakage is one of the common faults of the engine. The engine leakage has a great impact on its performance. After the air leakage, the engine power performance is poor, the fuel consumption deteriorates, and the smoke level increases, causing serious harm to users and the environment. big impact. In addition, China's diesel engine oil emission standards have entered the National VI emission standards, which put forward higher requirements for engines. For example, the National VI emission standards require the addition of diesel particulate filter (Diesel Particulate Filter, DPF) post-treatment If the device cannot be accurately diagnosed in case of air leakage, the DPF will accelerate carbon deposition and even blo...

AI Technical Summary

Problems solved by technology

[0002] Diesel engine air intake pipeline leakage is one of the common faults of the engine. The engine leakage has a great impact on its performance. After the air leakage, the engine power performance is poor, the fuel consumption deteriorates, and the smoke level increases, causing serious harm to users and the environment. big impact

In addition, China's diesel engine oil emission standards have entered the National VI emission standards, which put forward higher requirements for engines. For example, the National VI emission standards require the addition of diesel particulate filter (Diesel Particulate Filter, DPF) post-treatment If the device cannot be accurately diagnosed in the case of air leakage, the DPF will accelerate carbon deposition and even block and burn down

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