| Authors |
Nefediev Alexey Ivanovich, doctor of technical sciences, professor, sub-department of electrical engineering, Volgograd State Technical University (28 Lenin avenue, Volgograd, Russia), E-mail: nefediev@rambler.ru
Gusev Vladimir Georgievich, postgraduate student, Volgograd State Technical University (28 Lenin avenue, Volgograd, Russia), E-mail: gusev.vl.g@mail.ru
Nefediev Dmitry Ivanovich, doctor of technical sciences, professor, sub-department of information and measuring technique and metrology, Penza State University (40 Krasnay street, Penza, Russia), E-mail: ndi200106@yandex.ru
Sharonova Veronika Gennadyevna, senior lecturer, sub-department of basics of architectural design, Penza State University of Architecture and Construction (28 Germana Titova street, Penza, Russia), E-mail: virineya73@mail.ru
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| Abstract |
Background. To improve the reliability of the ignition system of a gas or gasoline engine, it is necessary to control the combustion of the air-fuel mixture in the internal combustion engine cylinders. The article is devoted to the problem of spark discharge control in an internal combustion engine. The article discusses a method for monitoring the presence of a spark discharge in the secondary circuit of the ignition coil by voltage on its primary winding. The main attention is paid to the properties of the flame and the peculiarities of the operation of photoelectric sensors. A control system is proposed that allows diagnosing emergency modes of operation of the ignition system, the principles of its construction are considered.
Materials and methods. In internal combustion engines, a high compression ratio is used to reduce fuel consumption, while the pressure in the engine cylinders increases, which leads to a significant increase in the spark plug discharge voltage. If the spark plug fails, the air-fuel mixture burns not in the cylinder, but in the catalytic converter, causing it to fail. The authors suggested that in order to improve the reliability of the ignition system, it is necessary to monitor the sparking process in the cylinders, and inform the driver about the spark plug failure.
Results. To solve this problem, a monitoring system was developed that allows diagnosing emergency operating modes of the ignition system, and the principles of its construction were considered. A diagram of a device for monitoring the parameters of a spark discharge in an internal combustion engine is shown and time diagrams of operation are given.
Conclusions. Thus, by measuring the voltage across the capacitor and the length of its charging time, it is possible to determine the condition of the spark plug and detect misfires. If an abnormal operation of the ignition system occurs, or if the spark plug is faulty, the control unit turns off the supply of the air-fuel mixture to the engine cylinders and warns the driver about the failure of the ignition system.
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