Double-electromagnetic-valve control type electronic control fuel injector capable of increasing fuel quantity

Abstract

The invention relates to the technical field of internal combustion engines, in particular to a double-electromagnetic-valve control type electronic control oil injector capable of increasing oil mass, which comprises an oil injector body, a nozzle tightening cap, a needle valve matching part, a metering orifice plate and two sets of electromagnetic valve control systems, the needle valve matching part comprises a needle valve body, a main needle valve, an auxiliary needle valve, a pressure adjusting spring, a reset spring, a control sleeve and a plug, a plurality of main spraying holes and a plurality of auxiliary spraying holes are formed in the outer side of the needle valve matching part, the main spraying holes are located in the outer sides of the auxiliary spraying holes, the main needle valve can seal the pressure storage cavity, and the bottom of the auxiliary needle valve can stretch into the pressure storage cavity to seal the auxiliary spraying holes; the metering orifice plate is provided with the two control metering orifices, the two sets of electromagnetic valve control systems control the two metering orifices respectively, the double-layer spray orifice arrangement is adopted, the arrangement flexibility of the spray orifices can be improved, the sizes and the arrangement modes of the main spray orifices and the auxiliary spray orifices can be adjusted according to the actual requirements of high and low working conditions, and the control flexibility of the oil quantity requirement of an engine is improved; and the requirements of the engine on the oil quantity under different working conditions are met.

Description

technical field [0001] The invention relates to the technical field of internal combustion engines, in particular to a dual-solenoid valve-controlled electronically-controlled fuel injector capable of increasing oil quantity. Background technique [0002] At present, with the increasing awareness of environmental protection and the increasing demand for power, more and more attention has been paid to the improvement of engine emissions and the optimization of power liters. The current electronically controlled injectors used in internal combustion engines basically adopt a single-valve control single-valve single-layer nozzle structure. On the one hand, to optimize emissions, it is necessary to reduce the nozzle holes and improve atomization and optimization while ensuring the amount of oil. The fuel injection duration; on the other hand, to increase the power, it is necessary to increase the nozzle hole as much as possible and increase the fuel injection amount while ensuri...

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Problems solved by technology

[0004] The present invention intends to provide a dual solenoid valve controlled electronically controlled fuel injector that can increase the oil volume, so as to solve the problem that the oil volume and discharge cannot be guaranteed at the same time

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