Automobile engine ignition test system and test method

Abstract

The invention provides an automobile engine ignition test system and test method. The automobile engine ignition test system comprises an ECU, a standard gap spark plug, a non-standard gap spark plug, ignition coils, two knob type variable resistors, an ignition regulator, an ignition logic relay and a relay. The standard gap spark plug is connected with one of the ignition coils in series and then connected with the ECU. The non-standard gap spark plug is connected with the relay. The relay is connected with a switch arranged on the ignition regulator. The two knob type variable resistors comprise knobs and variable resistor bodies correspondingly. The two knobs are arranged on the ignition regulator. One end of one of the ignition coils corresponding to the non-standard gap spark plug is connected with the ignition regulator, and the other end of the ignition coil corresponding to the non-standard gap spark plug is connected with the ECU, wherein a primary coil resistor and a secondary coil resistor of the ignition coil are in series connection with one variable resistor body correspondingly and then connected with the corresponding knob. The ignition regulator is connected with the ignition logic relay. The ignition logic relay is connected with the ECU. The test and analysis function of the variation of the primary coil resistor, the secondary coil resistor and the spark plug gap can be realized.

Description

Technical field [0001] The invention relates to the technical field of automobile electrical and electronic control, and more specifically, to an automobile engine ignition test system and a test method. Background technique [0002] The ignition system of an automobile engine is one of the five major systems and two major mechanisms of the automobile. The ignition energy of each cylinder of the engine has a great influence on the combustion quality of the fuel-air mixture. [0003] The experiment of automobile engine ignition system shows that there are three factors that directly affect the ignition energy, the primary coil resistance value of the ignition coil, the secondary coil resistance value and the spark plug gap. The design and development of automobile engine ignition system needs to consider the allowable deviation of the three key parameters of spark plug gap, primary ignition coil and secondary ignition coil resistance according to the selection of ignition system com...

AI Technical Summary

Problems solved by technology

[0005] However, at present, various types of teaching experiment benches for the ignition system of automobile engines on the market are based on the ignition coil, spark plug, and ECU of a certain model, and adopt the electrical control principle of the ignition system of the model to simulate the engine speed through the speed knob. Signals (which can simulate the signals of Hall-type, electromagnetic, and photoelectric speed sensors) are used to realize the experimental research on the engine ignition system of this model, but this test bench cannot carry out ignition performance experiments aimed at changes in the resistance of the ignition coil and changes in the spark plug gap.

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