Oil sprayer

Abstract

The invention provides an oil sprayer. The oil sprayer comprises a fuel pipe joint, an electric appliance joint, an electromagnetic coil, a magnetic core, a valve body, a shell, a needle valve, a spring and a filter. The electric appliance joint is connected with the electromagnetic coil. The fuel pipe joint is connected with the head of the shell. The valve body is arranged inside the shell. The needle valve is arranged inside the valve body. The valve element is arranged at the front portion of the valve body. The spring is connected to the front portion of the valve element. The filter is installed on the fuel pipe joint. An inlet is formed in the end of the fuel pipe joint. According to the oil sprayer, the faults that spraying is poor, oil is dripped from a spraying hole, carbon is deposited and the needle valve is clamped will not appear.

Description

technical field [0001] The invention relates to a fuel injector and belongs to the technical field of automobiles. Background technique [0002] When working, the fuel injection pump sends high-pressure fuel from the injector inlet pipe joint through the injector body and the oil passage in the needle valve body into the annular high-pressure oil chamber in the middle of the needle valve body, and the oil pressure acts on the pressure-bearing slope in the middle of the needle valve When the thrust exceeds the pressure of the pressure regulating spring, the needle valve will move up, and the fuel will be sprayed into the combustion chamber in an atomized state through the nozzle hole at the bottom of the valve body. When the oil supply is interrupted and the pressure of the oil flow drops, the needle valve returns quickly under the action of the pressure regulating spring, the sealing cone surface at the lower part of the needle valve is pressed against the sealing cone surfa...

AI Technical Summary

Problems solved by technology

Poor atomization of fuel injection will cause incomplete combustion and weak engine acceleration, which will cause single cylinder or multiple cylinders to misfire

If the working conditions of the fuel injector are very bad, the mechanical load and thermal load are high, and the installation and adjustment are improper, there will often be faults such as poor spraying, oil dripping from the nozzle hole, carbon deposits, and even needle valve stuck.

Once the fuel injector fails, the running engine will produce black smoke from the exhaust, the cylinders will work unevenly, the vibration will increase, and the power will drop and other abnormal phenomena.

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