An automatic high-pressure oil injection mechanism for a common rail injector

Abstract

The invention discloses an automatic high-pressure oil injection mechanism for a common rail fuel injector, which comprises a plurality of evenly distributed supporting optical axes, a top plate is fixed on the top of the supporting optical axes, an upper pressure cylinder is fixed on the top surface of the top plate, and the top plate A guide rod is movably connected to the bottom surface, and an upper pressure head is installed on the guide rod. At the same time, a workpiece positioning assembly is movably connected to the bottom end of the guide rod and below the upper pressure head. An oil injection component and a measurement sealing cavity are provided in sequence, wherein both the oil injection component and the measurement sealing cavity are fixed on the supporting optical axis. Beneficial effects of the present invention: the oil injection mechanism is exquisite in structure, strong and reliable, reasonable in cost and fully automatic, and can be used in a detection instrument for common rail injectors to realize automatic oil injection for common rail injectors with high cracking pressure, and There will be no leaks.

Description

technical field [0001] The invention relates to the field of mechanical parts testing equipment, in particular to an automatic high-pressure oil injection mechanism for a common rail injector. Background technique [0002] In the detection of single injection quantity for common rail injectors, a mechanism that can realize automatic high-pressure oil injection is needed. This automatic high-pressure oil injection mechanism for common rail injectors can realize automatic oil injection for workpieces with a cracking pressure greater than 100MPa. And there will be no leakage. At present, among domestic products that meet the high-pressure oil injection mechanism, they are either huge in shape, high in cost, or low in automation. Therefore, there is a lack of an automatic high-pressure oil injection mechanism for common rail injectors that has the characteristics of compact structure, reasonable cost, and complete automation. . [0003] Aiming at the problems in the related te...

AI Technical Summary

Problems solved by technology

At present, among domestic products that meet the high-pressure oil injection mechanism, they are either huge in shape, high in cost, or low in automation. Therefore, there is a lack of an automatic high-pressure oil injection mechanism for common rail injectors that has the characteristics of compact structure, reasonable cost, and complete automation.

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