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A kind of pipeline disconnection diagnosis method, device and electronic equipment

A diagnostic method and pipeline technology, applied in the direction of mechanical equipment, machine/engine, crankcase ventilation, etc., to achieve the effect of ensuring power

Active Publication Date: 2022-07-19
SAIC MOTOR
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In view of this, the present invention provides a pipeline disconnection diagnosis method, device and electronic equipment to solve the problem of urgently needing to detect whether the ventilation connecting pipeline in the crankshaft ventilation system is disconnected

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  • A kind of pipeline disconnection diagnosis method, device and electronic equipment
  • A kind of pipeline disconnection diagnosis method, device and electronic equipment
  • A kind of pipeline disconnection diagnosis method, device and electronic equipment

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Embodiment Construction

[0059] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0060] refer to figure 1 , figure 1 It is a schematic diagram of the structure of the crankshaft ventilation system, including the clean intake pipe, the full load pipe, the partial load pipe, the crankcase and the intake manifold. The air pipe flows into the full load pipe, the full load pipe passes through the crankcase to the part load pipe, then flows into the intake manifold, and flows through the intake manifold into the cylind...

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Abstract

The present invention provides a method, device and electronic equipment for diagnosing pipeline disconnection. If the intake air flow deviation data output by a preset intake air flow deviation model is greater than the cylinder intake air flow deviation value, the obtained data corresponding to the initial operating state of the vehicle is obtained. According to the calculation rule of the change rate of the intake air flow; according to the calculation rule of the change rate of the intake air flow, the initial intake air flow rate of change is calculated and obtained; The change of the intake air flow of the engine cylinder before and after the disconnection is determined; the diagnosis result of whether the intake pipeline is disconnected is determined according to the comparison result of the initial intake air flow rate of change and the deviation value of the cylinder intake air flow. Through the present invention, it can be detected whether the intake pipeline is disconnected, thereby ensuring the power performance of the engine in time.

Description

technical field [0001] The present invention relates to the field of crankshaft ventilation system diagnosis, and more particularly, to a method, device and electronic equipment for diagnosing pipeline disconnection. Background technique [0002] With the increasingly strict vehicle emission requirements, GB18352.6-201 Light Vehicle Pollutant Emission Limits and Measurement Methods clearly requires testing of the crankshaft ventilation system, and the connection pipeline in the crankshaft ventilation system will affect the disconnection. The intake air volume of the engine cylinder affects the power of the engine. In order to ensure the power of the engine, it is necessary to know the ventilation connection pipes in the crankshaft ventilation system. SUMMARY OF THE INVENTION [0003] In view of this, the present invention provides a pipeline disconnection diagnosis method, device and electronic device to solve the problem of urgent need to detect whether the ventilation co...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02B77/08F01M13/00
CPCF02B77/08F01M13/00
Inventor 薄东程传辉杨辉吴迪李广乐韩珍
Owner SAIC MOTOR