Method and device for automatic detection of high-voltage resistance of spark plug

Abstract

The invention discloses a method and a device for automatic detection of high-voltage resistance of a spark plug on a production line. The method is characterized in that a clamping mechanism clamps the spark plug to be detected on an assembly line; the ignition thread end is downwards inserted into a gas sealed chamber; high-pressure air is filled into the sealed chamber; a high-voltage pulse voltage string is supplied on a conductive screw rod of the spark plug; a voltage signal is subjected to sampling conditioning and window judgment by a circuit detection board according to a principle of voltage drop after high-voltage breakdown due to an insulation defect; the qualified pulse string is introduced into a controller; and the voltage resistance of the detected spark plug is judged whether the voltage resistance is qualified according to parameter setting.

Description

technical field [0001] The present invention relates to a spark plug detection method and device, in particular to a spark plug high voltage automatic detection method and device; the method and device can automatically detect spark plug withstand voltage defects on a mass production line, and can Automatically remove defective products, and the detection process can be closer to the ignition condition of the engine. Background technique [0002] The function of the spark plug is to break down the air between the two electrodes of the spark plug with the pulsed high-voltage current sent by the high-voltage wire, and generate electric sparks to ignite the mixed gas in the cylinder to make the engine run. This requires the spark plug to have excellent performance. Such as higher withstand voltage characteristics. At present, most manufacturers at home and abroad have simple spark plug withstand voltage testing equipment on the production line. The withstand voltage testing eq...

AI Technical Summary

Problems solved by technology

[0006] The above two patents, although the first mentions the online detection of spark plugs, it does not detect the withstand voltage performance of spark plugs; the second patent is the applicant of the present invention A technology for testing the insulation performance of spark plugs that I applied for first, but it is not for online testing of spark plugs, but a portable tester for repairing places

Therefore, the problems existing in the online detection of spark plugs have not been solved, and further improvements are needed.

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