A special high-voltage source resistance tester for the resistance of spark plug porcelain components

Abstract

The invention discloses a high-voltage source resistance tester dedicated to spark plug ceramic component resistance. The high-voltage source resistance tester dedicated to spark plug ceramic component resistance is equipped with an AC / DC power supply, a DC / DC step-up power supply module, and a DC intelligent voltage Table; the input end of the AC / DC power supply is connected to the AC circuit, and the output end is connected to the DC / DC step-up power supply module; the output end of the DC / DC step-up power supply module is connected to the test end of the DC smart voltmeter, and a fixed-value resistor is connected in series therebetween , a constant current diode or a constant current triode; the DC intelligent voltmeter test terminal extends two test leads to overlap the spark plug screw end and the central electrode. The resistance tester provided by the present invention improves the accuracy of measurement results, can greatly reduce mismeasurement, saves manual retesting and verification work, can be adapted to automatic and large-scale measurement, and improves production efficiency.

Description

technical field [0001] The technical field of spark plugs of the present invention, more specifically, relates to a high-voltage source resistance tester dedicated to the resistance of spark plug porcelain components. Background technique [0002] The resistor body of the spark plug ceramic component refers to the glass resistance sintered body filled in the inner hole of the spark plug ceramic body, which plays the role of connecting the screw and the central motor and sealing the inner hole of the ceramic; the sintering temperature of the glass resistor of the spark plug ceramic component reaches about 950 ° C, Afterwards, rapid air cooling will cause surface oxide layers on the center electrode and screw ends, which will adversely affect the measurement of the resistance value of the resistor in the ceramic assembly. [0003] The resistance measurement of the original spark plug ceramic components generally uses a multimeter and a resistance meter. The test power supply v...

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Problems solved by technology

[0002] The resistor body of the spark plug ceramic component refers to the glass resistance sintered body filled in the inner hole of the spark plug ceramic body, which plays the role of connecting the screw and the central motor and sealing the inner hole of the ceramic; the sintering temperature of the glass resistor of the spark plug ceramic component reaches about 950 ° C, Afterwards, the rapid air cooling will cause the surface oxide layer on the center electrode and the screw end, which will have an adverse effect on the resistance value measurement of the resistor in the ceramic component.

[0003] The resistance measurement of the original spark plug ceramic components generally uses a multimeter and a resistance meter. The test power supply voltage generally adopts a low voltage, ranging from a few volts to tens of volts. It is also based on the existence of the oxide layer. Before the measurement, it is necessary to manually use a blunt tool to scrape off the surface oxide layer, which slows down the detection speed of the resistance of the ceramic component, thus affecting Production efficiency of the entire spark plug

[0004] At the same time, since the spark plug ceramic component is a non-linear element, when the spark plug ceramic component is measured with the traditional high voltage source testing equipment and method, the resistance value of the ceramic component will change greatly, and the measured value will be There will be a large error

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