Piston Cooling Spray Hook Targeting Test Tool

Abstract

The invention discloses a piston cooling spray hook shooting test tool, which is used for delivering the shooting liquid to the spray hook of the main oil channel of the cylinder body. Piston cooling spray hook target test tool includes inner tube, outer bushing and lock switch. The inner tube is a tubular structure arranged in the axial direction, and the side wall is provided with a plurality of through holes. One end of the inner tube is provided with a first boss, and the other end is closed and provided with a second boss. The outer bush is sleeved outside the inner pipe, and the outer bush and the inner pipe can move relative to each other in the axial direction. The outer bushing has a connecting copper sleeve part, which can communicate with the through hole and the spray hook; and an expanding sleeve part, which is located on both axial sides of the connecting copper sleeve part, and the expanding sleeve part is in clearance fit with the main oil passage in a free state. The locking switch can drive the inner tube to move in the axial direction. When the locking switch is in the locked state, the two ends of the outer bush are in contact with the first boss and the second boss respectively, and the expansion sleeve is squeezed to move along the radial direction. The protrusion forms an interference fit with the main oil passage. The invention enables good sealing.

Description

technical field [0001] The invention relates to the field of diesel engines, in particular to a diesel engine piston cooling spray hook targeting test tool. Background technique [0002] The piston is a key part of the diesel engine, which works in a harsh environment of high temperature and high pressure. In order to prevent the melting and deformation of the piston caused by the overheating of the piston, causing serious engine failure, most diesel engines now use pistons with internal cooling holes. The piston is forcibly cooled by the lubricating oil sprayed into the internal cooling oil channel of the piston by the cooling spray hook. The use of this structure reduces the operating temperature of the engine piston and greatly improves the reliability of the engine. Due to the manufacturing accuracy of the hook itself, the installation hole of the piston cooling spray hook on the engine, and improper assembly, the drop point of the lubricating oil sprayed by the piston c...

AI Technical Summary

Problems solved by technology

[0006] The object of the present invention is to provide a piston cooling spray hook shooting test tool, so as to overcome the shortcomings of the prior art that the O-shaped sealing ring of the piston cooling spray hook shooting test tool is easy to be trimmed, the sealing effect is not good, and the use is inconvenient.

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