Multi-channel discharge large-area distributed ignition system and method

Abstract

The invention belongs to the technical field of electrode ignition, and particularly relates to a multi-channel discharge large-area distributed ignition system and method.The multi-channel discharge large-area distributed ignition system comprises a pulse generator and multi-channel discharge distributed ignition electrodes; the multi-channel discharge distributed ignition electrode is of a columnar structure and comprises an inner electrode, an outer electrode and an insulating medium. The outer electrode is arranged at the center shaft, one end of the outer electrode extends out of one side of the multi-channel discharge distributed ignition electrode and then is electrically connected with the positive electrode of the pulse generator, and the other end of the outer electrode extends out of the other side of the multi-channel discharge distributed ignition electrode in a circular truncated cone structure; the inner electrode comprises a first inner electrode arranged at the axial outer part of the multi-channel discharge distributed ignition electrode and a second inner electrode arranged on the bottom surface close to one side of the circular truncated cone-shaped structure, and the first inner electrode is connected with the second inner electrode; the insulating medium is arranged outside the second inner electrode and between the first inner electrode and the outer electrode; the first inner electrode is electrically connected with the negative electrode of the pulse generator.

Description

technical field [0001] The present disclosure belongs to the technical field of electrode ignition, and in particular relates to a large-area distributed ignition system and method for multi-channel discharge. Background technique [0002] The statements in this section merely provide background information related to the present disclosure and do not necessarily constitute prior art. [0003] Lean burn improves engine thermal efficiency and reduces NO x and other pollutant emissions. However, lean burn makes ignition difficult, resulting in increased engine cycle variation. In addition, the lean combustion speed is slow, which reduces the constant volume of the engine cycle. These factors limit the improvement effect of lean combustion on thermal efficiency in an actual engine. [0004] Newer clean fuels, such as ammonia, burn more slowly than carbon-based fuels such as methane and are more difficult to ignite. The application of such clean fuels in engines requires mor...

AI Technical Summary

Problems solved by technology

RF corona ignition is currently a more practical multi-point ignition technology, but the coverage area of ​​the discharge channel is still small, limited to a small area near the electrode tip

In addition, radio frequency corona discharge easily forms a single arc channel and loses the ability of multi-point ignition

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