Lengthened piston for optical engine

Abstract

The invention discloses a lengthened piston for an optical engine, which comprises a piston top window part and a piston lengthened part, wherein the piston top window part is connected with the piston lengthened part through bolts; a circular hole for installing a transparent window is arranged at the top of the piston top window part; a group of oil scraping rings and a group of oil control rings are arranged on the piston lengthened part; at least a group of bushing rings which can enable the lengthened piston to move along the axial direction of a cylinder sleeve are also arranged on the piston lengthened part; a piston pin hole which can enable the piston lengthened part to be assembled together with a connecting rod is arranged at the lower part of the piston lengthened part; and atleast a group of piston compression rings are arranged on the piston top window part. The lengthened piston for the optical engine, which has the special structure, solves the problems of untight sealing and air leakage between the transparent window and the circular hole at the piston top and solves the problem of disassembly of the transparent window by connecting the piston top window part with the piston lengthened part through the bolts, thus the transparent window at the piston top can be disassembled, replaced or cleaned easily.

Description

technical field [0001] The invention relates to a piston for an engine, in particular to an extended piston for an optical engine. Background technique [0002] At present, the optical engine is mainly used to study the fuel injection and spray stroke in the engine cylinder. The transparent window and mirror set on the top surface of the piston are used to take images, so as to analyze the flow field, spray, combustion and mixing in the cylinder. Gas formation, etc. are studied. However, during the working process of optical engines, especially combustible optical engines, the transparent window at the top of the extended piston needs to be disassembled frequently for cleaning or replacement, but the disassembly of the transparent window at the top of the existing extended piston is tedious, time-consuming, and difficult to install. Finally, it is difficult to ensure the sealing between the piston and the transparent window, so that the pressure in the cylinder becomes lowe...

AI Technical Summary

Problems solved by technology

However, during the working process of optical engines, especially combustible optical engines, the transparent window at the top of the extended piston needs to be disassembled frequently for cleaning or replacement, but the disassembly of the transparent window at the top of the existing extended piston is tedious, time-consuming, and difficult to install. Finally, it is difficult to ensure the seal between the piston and the transparent window, so that the pressure in the cylinder becomes lower and the power decreases

Images