Cylinder internal flow field visualization cylinder cover and method of large diesel engine

Abstract

The invention discloses a cylinder internal flow field visualization cylinder cover and method of a large diesel engine. The cylinder cover is provided with an annular inner edge. A plurality of pairs of through holes are symmetrically formed in the peripheral wall of the annular inner edge in the radial direction, and a laser light source is installed in one through hole. The laser light source is used for collecting the information of a cylinder internal flow field in the fuel injection process. CCD image sensors are installed in the through holes in the opposite side of the laser light source and used for receiving the information, sent by the laser light source, of the cylinder internal flow field and transmitting the information to an external CCD image processing device to be processed. One or two or more through holes of different angles can be selected at will in the opposite face of the placement of the laser light source for containing the CCD image sensors, and therefore the situation of the cylinder internal flow field can be observed from a plurality of angles, and the analysis accuracy is improved. Other through holes not used temporally are sealed and filled with metal sealing components, and therefore the influence on fuel combustion is prevented.

Description

technical field [0001] The invention relates to the observation of the flow field in the cylinder of a diesel engine, in particular to a cylinder head and a method for visualizing the flow field in the cylinder of a large diesel engine. Background technique [0002] In recent years, diesel engines have been widely used due to their high power and high efficiency, especially in the field of nautical ships, and have made great contributions to the development of human society and the progress of navigation. During the working process of the diesel engine, the fuel is actually sprayed and diffused in the combustion chamber to generate power. The atomization process of fuel depends not only on the interaction between the gas outside the injection hole and the oil beam, but also on the condition of the flow field in the cylinder and the flow state of the fuel in the injection hole. During the fuel atomization combustion process, due to the influence of many factors, it has varia...

AI Technical Summary

Problems solved by technology

For the diesel engine experiment platform, the optical engine is usually modified or a constant volume incendiary bomb is used to conduct experiments in combination with the optical path system and data acquisition and control system. For the optical engine modification, an extended body is usually added between the body and the cylinder head And the extended piston, a transparent window as large as possible is designed on the upper part of the extended piston, so as to observe the fuel spray, mixing, ignition and combustion process. This modification method is obviously not easy to realize for large diesel engines

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