How to Replace the Copper Water Jacket of Engine Injector

Abstract

The invention discloses a method for replacing an engine fuel spray nozzle copper water jacket and belongs to the technical field of engine repairing and maintenance. By means of the method, when a diesel engine is maintained under normal conditions, the engine fuel spray nozzle copper water jacket can also be replaced. The method includes the following steps that a pulling device and an expansion device are respectively made, wherein the pulling device is provided with tapping screws, and the expansion device is provided with an expansion cavity; then, the pulling device and the waste fuel spray nozzle copper water jacket needing replacing are connected into a whole through the tapping screws, the waste fuel spray nozzle copper water jacket is pulled out of the engine together with the pulling device through the pulling device; a new fuel spray nozzle copper water sleeve is connected to the expansion device in a sleeved mode, the new fuel spray nozzle copper water sleeve and the expansion device are assembled into the position, where the waste fuel spray nozzle copper water jacket is pulled out, of the engine, the new fuel spray nozzle copper water sleeve is arranged on the engine in an expansion mode through the expansion cavity, and the steps are repeatedly carried out until the fuel spray nozzle copper water jacket needing replacing is replaced.

Description

technical field [0001] The invention relates to a replacement method, in particular to a method for replacing a copper water jacket of an engine fuel injector, and belongs to the technical field of engine repair and maintenance. Background technique [0002] The function of the nozzle water jacket of the diesel engine is to cool the nozzle. Most domestic diesel engine nozzle water jackets are copper water jackets, so they are commonly called fuel nozzle copper water jackets. This material has better thermal conductivity and ductility. When installing, they are all inlaid and installed in place at the engine production plant at one time, and it is generally not possible to replace them until overhaul. However, during the use of the engine, due to environmental changes, the copper water jacket of the oil nozzle and nozzle can only be used for half a year to a year before it starts to leak. The reason is that the inlaid sealing part is loose due to thermal expansion and contra...

AI Technical Summary

Problems solved by technology

However, during the use of the engine, due to environmental changes, the copper water jacket of the oil nozzle and nozzle can only be used for half a year to a year before it starts to leak. The reason is that the inlay sealing part is loose due to thermal expansion and contraction. while leaking

Due to the small space at the location of the water leakage, the water leakage cannot be repaired. In this way, the engine cylinder head has to be replaced as a whole under general maintenance conditions, causing a lot of waste.

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