Common faults and solutions of Dalian engine crankcase leak testing machine

Common faults and solutions of Dalian engine crankcase leak testing machine

The Dalian engine crankcase leak testing machine plays an important role in ensuring engine quality. However, it may also encounter some faults, and it is necessary to understand common problems and solutions.

Inaccurate test results are a prominent fault. On the one hand, if the pressure sensor of the leak testing machine malfunctions, such as zero drift, it will cause the measured pressure reference to deviate, leading to misjudgment. At this point, it is necessary to use professional calibration equipment to recalibrate the pressure sensor and restore its accuracy; On the other hand, wear or aging of the sealing connection components can cause poor sealing between the crankcase and the leak testing machine, resulting in gas leakage and affecting the detection results. Worn seals should be replaced promptly to ensure the integrity of the enclosed testing space.

Unstable operation of leak testing machines is also a common problem. When the power supply voltage fluctuates greatly, it can interfere with the normal operation of the control system, causing interruptions or errors in the detection process. Can install voltage regulator to ensure stable power supply; In addition, internal electronic components that are damp and short circuited can also cause unstable conditions. It is necessary to do a good job of moisture-proof and dehumidification of the equipment, regularly inspect and dry damp parts.

No detection signal output fault occurs. Firstly, check the signal transmission cables for any open circuits, short circuits, or loose connectors that may hinder the transmission of signals from the detection site to the display terminal. Repair or replace the faulty cables to ensure a smooth signal path; If the cable is normal, it may be due to damage to the detection component. For example, if the flow sensor fails and cannot sense changes in gas flow, a new detection component needs to be replaced to restore the "sensing" ability of the leak testing machine.

Malfunctions caused by operational errors cannot be ignored. Operators who mistakenly set detection parameters such as inflation pressure and holding time that do not meet the specifications of the crankcase may obtain incorrect results. This requires strengthening personnel training, strictly following the product manual to ensure that each step is accurate and error free.

Only by promptly addressing these common faults can the Dalian engine crankcase leak testing machine operate accurately and reliably, laying a solid quality defense line for engine production and promoting the high-quality development of related industries such as automobile manufacturing.