Combustion chamber of diesel engine with visualization window

Abstract

The invention discloses a diesel engine combustion chamber with a visual window. The diesel engine combustion chamber is characterized in that a quartz cylinder sleeve is connected with a metal cylinder in a sleeving manner; a lengthened piston is arranged in the quartz cylinder sleeve and the metal cylinder; the circumference of the inner wall of a top combustion chamber of the lengthened piston is milled to remove a 90-degree sector volume; the position, where the 90-degree sector volume is removed, on the inner wall of the combustion chamber is filled with the quartz glass visual window in an embedding manner; a combustion chamber pressing plate is arranged at the upper part of the quartz glass visual window; and the combustion chamber pressing plate, the lengthened piston and the quartz glass visual window are fixed through bolts, so that the quartz glass visual window is integrated with the lengthened piston. The visual combustion chamber solves the problems of distortion of a flowing field due to conventional simplification of the combustion chamber and difficulty in obtaining a flowing field in the vertical direction in the combustion chamber; a vertical laser sheet light source is emitted from one side edge of the visual window and reaches the wall surface of the opposite combustion chamber; and a high speed camber is perpendicular to sheet laser, and flowing field information on the vertical surface of the whole region from the center of a cylinder to the wall surface can be obtained through the quartz visual angle.

Description

technical field [0001] The invention belongs to the engine structure technology, and in particular relates to a design structure capable of visualizing engine combustion chambers. Background technique [0002] In the engine combustion diagnosis experiment, because the traditional intrusive measurement method will cause some interference to the in-cylinder flow field, the optical test method is widely used in the engine cylinder flow, mixture formation and combustion diagnosis. The use of laser and high-speed camera to obtain the oil-air mixing and combustion information in the cylinder through the visualization window has important guiding significance for the research and development of the engine. [0003] The engine combustion chamber is surrounded by three parts: the bottom surface of the cylinder head, the top of the piston and the cylinder liner, so there are three visual design methods in terms of structure: (1) Measure the flow field in the cylinder through the cylin...

AI Technical Summary

Problems solved by technology

Its defect is that the structural simplification is too large, which is quite different from the actual combustion chamber, resulting in the distortion of the flow field in the cylinder, and can only obtain the flow field information of the horizontal section, and it is difficult to obtain the flow information of the vertical surface

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