Integrated microwave enhanced laser plasma ignition experiment system

Abstract

The invention belongs to the related technical field of laser ignition, and discloses an integrated microwave enhanced laser plasma ignition experiment system. The system comprises a laser emission unit, a microwave emission unit, an igniter and a constant volume combustion bomb, the laser emission unit is used for emitting laser, the microwave emission unit is used for generating microwaves, the igniter is used for receiving the laser emitted by the laser emission unit and the microwaves generated by the microwave emission unit, and performing ignition by using the laser and the microwaves. The constant-volume combustion bomb is arranged below the igniter, and an ignition head of the igniter is arranged in the constant-volume combustion bomb, so that the combustion process is isolated from the outside. According to the system, microwave ignition and laser ignition are coupled together, and a basic research means is provided for deep research on the microwave-enhanced laser ignition process, the plasma-enhanced combustion mechanism and potential application of microwave-enhanced laser ignition on a real machine.

Description

technical field [0001] The invention belongs to the related technical fields of laser ignition and internal combustion engine ignition, and more specifically relates to an integrated microwave-enhanced laser plasma ignition experiment system. Background technique [0002] In the face of increasingly stringent emission regulations, the application of technologies such as lean combustion and exhaust gas recirculation on vehicle engines has been promoted. The ignition effect of the previously favored electric spark ignition device is greatly improved in the face of such a lean mixture. Weaken, not to mention, in the high-speed thin airflow in the high-speed aircraft combustion chamber, the ignition difficulty and combustion instability caused by the spark ignition system; but simply increasing the ignition energy will increase the ablation of the spark plug electrode and rapidly reduce the effective life. In addition, since the electric spark system is fixed, it is impossible t...

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Problems solved by technology

The test bench of this invention is in an open environment, and it is difficult to conduct premixed ignition research; at the same time, the microwave and laser are arranged in two ways, the equipment structure is not compact enough, and it is not suitable for the real machine arrangement of the microwave-enhanced laser ignition technology on the internal combustion engine. In addition, in this invention It is difficult to adjust the position of laser focus and microwave antenna: if the antenna is too close to the laser focus, the laser will be blocked and the laser energy will be lost; if the antenna is too far away from the laser focus, it is difficult for microwave energy to enter the laser plasma

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