Visual spark plug ignition energy comparison test system and test method

Abstract

The invention discloses a visual spark plug ignition energy comparison test system, which comprises a rotating speed adjusting knob, an ignition signal generator, an ignition controller, an ignition coil, a spark plug, a camera obscura body, a high-pressure inflation device and an inflation device control module, the spark plug comprises a standard spark plug and a to-be-tested spark plug. The ignition coil is connected in parallel with a terminal of the standard spark plug and a terminal of the to-be-tested spark plug through high-voltage wires. A standard spark plug or / and a spark plug to be tested are / is contained in a cavity of the camera obscura body in a sealed mode. End optical fibers of the two optical fiber sensors are hermetically accommodated in a cavity of the camera obscura body respectively; the optical fiber signal analyzer is electrically connected with the two optical fiber sensors, the light intensity calibration device and the display through wires respectively; by measuring the ignition light intensity of the spark plug and detecting the ignition energy of the spark plug, the ignition energy of the spark plug can be quantified, a measurement curve can be output, and whether the ignition energy of the to-be-tested spark plug meets the requirement of a standard spark plug can be visually compared.

Description

technical field [0001] The invention relates to the field of vehicle ignition system detection, in particular to a visual spark plug ignition energy comparison test system and a test method. Background technique [0002] The spark plug is the main part of the ignition system of the engine. It mainly ionizes the air between the center electrode and the side electrode through high voltage, and generates an electric spark, thereby igniting the mixture. [0003] In order to make the engine run normally, the ignition energy of the spark plug should be large enough so that the spark can successfully ignite the combustible mixture; the ignition energy has a direct impact on the engine. Shortening the service life of the spark plug may even cause pre-ignition knocking, which will reduce the engine power and damage the parts; if the ignition energy is too small, it will cause the engine to misfire, reduce the power and economy of the engine, and affect the starting performance of the...

AI Technical Summary

Problems solved by technology

[0003] In order for the engine to run normally, the ignition energy of the spark plug must be large enough so that the spark can successfully ignite the combustible mixture; the size of the ignition energy has a direct impact on the engine. When the ignition energy is too large, it is easy to cause the spark plug electrode to be ablated. Shorten the service life of the spark plug, and even cause premature detonation, which will reduce the engine power and damage the parts; if the ignition energy is too small, it will cause the engine to misfire, reduce the power and economy of the engine, and affect the starting performance of the engine

[0004] In the existing technology, as disclosed in the Chinese patent CN101551302A "a spark plug ignition performance and withstand voltage performance tester, test method and application", this patent can only check whether the spark plug flashes over, and cannot detect the ignition energy of the spark plug. There is no guarantee that the spark plug can normally ignite the combustible mixture of the engine during work.

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