Fuel oil metering valve with movable iron core capable of rotating itself

Abstract

The invention discloses a fuel oil metering valve with a movable iron core capable of rotating itself. The fuel oil metering valve comprises the movable iron core, a coil assembly, a shell, a valve body, an ejection rod, a valve element, a spring and a spring base; the movable iron core is arranged at the bottom of the inner side of the shell, the coil assembly is arranged outside the movable iron core, a gap is reserved between the movable iron core and the coil assembly, and the coil assembly is connected to the inner side of the shell in a sleeved manner; the axis of the movable iron core is sleeved with the ejection rod in a connected manner; the valve body is connected to the top of the inner side of the shell in a sleeved manner, the valve element is arranged at the axis of the valve body, one end of the ejection rod penetrates the valve body to abut against one end of the valve element, and the other end of the valve element presses the spring through the spring base in a buckling manner; and the valve element moves left and right under the effects of the ejection rod and the spring. The fuel oil metering valve is reasonable in design, easy and convenient to manufacture and low in cost, and the market competitiveness is improved; the structure of the movable iron core is improved, the movable iron core does rotation motion while doing axial movement, and therefore the service life of the movable iron core is prolonged.

Description

technical field [0001] The invention belongs to the technical field of valves, and specifically relates to a moving iron core applied to a high-pressure common rail system of a BOSCH diesel engine, installed on a high-pressure oil pump, and adjusting the fuel intake of the high-pressure oil pump according to the control signal of the engine ECU, thereby controlling the pressure of the high-pressure common rail system. Self-rotating fuel metering valve. Background technique [0002] At present, from the point of view of products returned from the market, due to the large difference in domestic diesel oil products, after a certain period of use of the original BOSCH fuel metering valve, the outer circle of the moving iron core will wear out at a certain part, resulting in movement resistance of the moving iron core. become larger, the response speed becomes slower, and the performance does not meet the requirements of use. Contents of the invention [0003] The purpose of t...

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Problems solved by technology

[0002] At present, from the point of view of products returned from the market, due to the large difference in domestic diesel oil products, after a certain period of use of the original BOSCH fuel metering valve, the outer circle of the moving iron core will wear out at a certain part, resulting in movement resistance of the moving iron core. Larger, slower response speed, performance does not meet the use requirements

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