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Withdrawal tool of oil injector needle valve

A technology for disassembling tools and fuel injection nozzles, which is applied to fuel injection devices, engine components, machines/engines, etc. Simple, improve work efficiency, easy to use effect

Inactive Publication Date: 2013-04-03
天台县唐宋汽车修配厂
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the needle valve cannot be disassembled with this method for the tightly stuck fuel injector.
The oil nozzle of the common rail is more difficult to disassemble, because the needle valve of the oil nozzle has no tail, and the end surface and the end surface of the valve body are flat and cannot be clamped with hand pliers
Therefore, it is very difficult to disassemble the stuck injector needle valve

Method used

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  • Withdrawal tool of oil injector needle valve
  • Withdrawal tool of oil injector needle valve
  • Withdrawal tool of oil injector needle valve

Examples

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Embodiment Construction

[0013] Below in conjunction with accompanying drawing, the present invention will be further described with specific embodiment, see figure 1 —3: A tool for dismantling the needle valve of the fuel injector, including a fuel injector 10 without a nozzle and a bushing 11, wherein one end of the bushing 11 is connected to the head of the fuel injector 10 without a nozzle, and the bushing The other end of 11 is screwed with a fixed pin 13, and the outlet end of the fuel injector 10 without a nozzle in the shaft sleeve 11 is screwed with a fixed sleeve 12 that can be installed with a fuel injector inside, and the fuel injector 10 without a nozzle The tail is provided with a threaded interface 16 and an oil return joint 17.

[0014] According to the above-mentioned fuel injector needle valve removal tool, wherein, the specific structure that one end of the shaft sleeve 11 is connected to the head of the fuel injector 10 without nozzle is: the fuel injector 10 without nozzle and the...

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PUM

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Abstract

The invention belongs to the technical field of withdrawal tools, and particularly relates to a withdrawal tool of an oil injector needle valve, which comprises an oil injector without a nozzle, and a shaft sleeve, wherein one end of the shaft sleeve is connected with the head part of the oil injector without the nozzle, the other end of the shaft sleeve is screwed with a fixed pin, a fixed sleeve inside which a nozzle can be arranged is screwed on the end part of an outlet of the oil injector without the nozzle in the shaft sleeve, and a threaded coupling and an oil return joint are arranged on the tail part of the oil injector without the nozzle. According to the invention, the needle valve can be completely withdrawn without any physical knocking in the whole withdrawal process, and the nozzle can not be damaged. Meanwhile, the withdrawal tool has the advantages of simpleness in operation, convenience for use, greatly increased working efficiency and low manufacture cost.

Description

technical field [0001] The invention belongs to the technical field of dismantling tools, in particular to a dismantling tool for needle valves of fuel injection nozzles. Background technique [0002] The fuel injector is a device for injecting high-pressure atomized fuel into the combustion chamber of a diesel engine. The gap between the sliding cylinders is only 0.001-0.0025 millimeters. During the working process, due to the moisture, dust or acidic substances in the diesel oil and some irregular operations in the assembly process, the needle valve of the fuel injector assembly will be stuck in the needle valve body. The conventional method for stuck fuel injectors is: put the stuck fuel nozzle into diesel oil or engine oil to warm up, then take out and wrap the cloth, and then use the pliers to clamp the tail of the needle valve and slowly move it to move the needle. The valve is removed from the valve body for maintenance. However, the needle valve cannot be disassem...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02M61/10
Inventor 虞其桢
Owner 天台县唐宋汽车修配厂
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