Experimental device and method based on fast compressor

Abstract

The invention provides an experimental device and method based on a fast compressor, comprising: a compression cylinder, including a cylinder barrel provided with a through hole and a piston movably inserted in the through hole; a combustion component, sealed and connected to the cylinder The first end of the barrel and the side of the combustion component close to the cylinder barrel construct a combustion chamber connected to the through hole; the trigger device is installed on the side wall of the combustion chamber; the position sensor is installed on the The cylinder is suitable for sensing the position of the piston; the signal generator is communicatively connected to the position sensor and the trigger device. Precisely controlling the triggering time of the triggering device can establish a data model between the triggering time and engine knocking, which is conducive to in-depth research and utilization of the engine knocking phenomenon, thereby improving the thermal efficiency of the engine. At the same time, the experimental device can also be applied to other combustion studies that rely on precise triggering.

Description

technical field [0001] The invention relates to the technical field of engines, in particular to an experimental device and method based on a fast compressor. Background technique [0002] With the development of engine technology and the competition in domestic and foreign markets, it is urgent for engines to further improve thermal efficiency to reduce fuel consumption. Increasing the compression ratio is the most direct and effective means to improve the thermal efficiency of the engine. However, with the further increase of the compression ratio, the engine will face the problem of knocking. When knocking occurs, the combustion of the engine deteriorates rapidly, and there will be violently oscillating pressure waves in the combustion chamber. Higher knocking can even destroy the engine in one cycle. It is generally believed that the essence of knocking is the spontaneous combustion phenomenon in the combustion process in the cylinder, so the research on the spontaneous...

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Problems solved by technology

Engine experiments show that as the ignition timing advances, the tendency of the mixture to knock will increase. However, the triggering timing of the mixture in the engine in the prior art has a large chance and cannot be precisely controlled, which is not conducive to further research.

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