High-frequency resonance ignition circuit of lean combustion engine, as well as working and control methods thereof

Abstract

The invention discloses a high-frequency resonance ignition circuit of a lean combustion engine. The circuit comprises an ignition main loop, wherein the ignition main loop comprises a power supply; an external direct-current battery is connected into the input end of the power supply; and the output end of the power supply outputs alternating current with the output frequency f. The ignition circuit further comprises a high-energy ignitor, wherein the high-energy ignitor comprises a boosting transformer, a shunt capacitor, a grounding electrode and an ignition electrode; the shunt capacitor and a secondary side of the boosting transformer are connected in parallel so as to form an ignition resonance structure; the grounding electrode is connected with one common terminal of the shunt capacitor and the secondary side of the boosting transformer; and the ignition electrode is connected with the other common terminal of the shunt capacitor and the secondary side of the boosting transformer. By utilizing a resonance characteristic of the ignition resonance structure, the ignition circuit, as well as an ignition method and a control method thereof provided by the invention can be conveniently applied to an air cylinder of the lean combustion engine, lean fuel gas can be accurately and high-efficiently combusted, and the lean combustion engine is ensured to run normally.

Description

technical field [0001] The invention belongs to the technical field of engine ignition, and in particular relates to a high-frequency resonance ignition circuit of a lean combustion engine. Background technique [0002] An engine is a machine that can convert other forms of energy into mechanical energy, generally including internal combustion engines, external combustion engines, jet engines, electric motors, etc. Today's power vehicles often use internal combustion engines as their power core to provide speed and torque for the vehicle to drive it forward. [0003] The internal combustion engine is a kind of power machinery, which uses the heat energy released by the combustion of fuel inside the machine, and converts the heat energy directly into power, and then drives the external load. Common internal combustion engines usually run on gasoline or diesel. The internal combustion engine realizes the conversion between the internal energy of the fuel and the mechanical e...

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Problems solved by technology

[0010] However, in the specific implementation process of the above-mentioned patents, not only the problems of excessively large volume and high cost, but also the problem of microwave frequency drift that is difficult to overcome in the microwave-assisted ignition technology, the ignition control of the entire ignition device is very difficult, and it is difficult to use it in a real internal combustion engine. Promotion and application in the field of ignition

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