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Engine oil duct leakage testing device and method

An engine and leak testing technology, applied in combustion engines, internal combustion piston engines, mechanical equipment, etc., can solve problems such as the inability to meet the requirements of leak testing accuracy and accuracy, and the requirements of high sealing pressure and sealing, and improve the reliability of engine sealing. , Guarantee the quality of assembly and reduce the effect of leakage

Pending Publication Date: 2022-08-02
FAW JIEFANG AUTOMOTIVE CO
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Problems solved by technology

However, in the case of special leak test requirements, for example, when the sealing pressure is high and the sealing requirements are high, ordinary leak test methods generally cannot meet the leak test accuracy and accuracy requirements.

Method used

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  • Engine oil duct leakage testing device and method
  • Engine oil duct leakage testing device and method

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Embodiment Construction

[0034] In order to make the technical problems solved by the present invention, the technical solutions adopted and the technical effects achieved more clearly, the technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings. Obviously, the described embodiments are only the present invention. Some examples, but not all examples. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts shall fall within the protection scope of the present invention.

[0035] In the description of the present invention, unless otherwise expressly specified and limited, the terms "connected", "connected" and "fixed" should be understood in a broad sense, for example, it may be a fixed connection, a detachable connection, or an integrated ; It can be a mechanical connection or an electrical connection; it can be a direct connection...

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Abstract

The invention discloses an engine oil duct leakage test device and method, and belongs to the technical field of sealing quality detection. The engine oil duct leakage testing device comprises a high-pressure-resistant plugging tool plugged on an oil hole of a workpiece, an air supercharging device, a high-pressure leakage testing instrument and an inflation plugging tool. The inlet end of the air supercharging device is connected to an air source. The inlet end of the high-pressure leakage testing instrument is connected to the outlet end of the air supercharging device; the two ends of the inflation plugging tool are connected with an oil duct of the workpiece and the high-pressure leakage testing instrument respectively. Air with preset test pressure can be filled into the oil duct through the air supercharging device, the high-pressure leakage testing instrument and the inflation plugging tool, the high-pressure leakage testing instrument can perform inflation, pressure maintaining, testing and exhausting on the oil duct, and the high-pressure leakage testing instrument can feed back the leakage value of the oil duct. The device is simple in structure and convenient to operate, leakage testing precision and accuracy are improved, and the device has a good effect on finding tiny leakage of a workpiece.

Description

technical field [0001] The invention relates to the technical field of engine sealing quality detection, in particular to an engine oil passage leak test device and method. Background technique [0002] On the engine assembly line, a large number of leak tests are required to confirm whether the assembly quality of the components meets the design sealing requirements. At present, the methods commonly used in the industry include the air leak test method, the inflatable water immersion observation method, and other special leak detection methods. The air leak test method and the inflatable water immersion observation method are too complicated in the detection process, the leak test efficiency is not high, and it is not easy to observe and judge the leak location. A special leak test method such as CN103868659A, a leak test method for the tightness of a copper sleeve of a cylinder head fuel injector, adopts a method of starting and stopping a heavy-duty diesel engine and obs...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M3/02
CPCG01M3/025Y02T10/40
Inventor 董西峰陈磊钱承智朱炜
Owner FAW JIEFANG AUTOMOTIVE CO
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