Methanol-diesel oil dual-fuel internal mixing type oil injector capable of being independently controlled

By designing a methanol-diesel dual-fuel internal mixing injector that can be independently controlled, independent control and internal mixing injection of the fuel are achieved, solving the problems of complex structure, difficult installation and inflexible control in the existing technology, improving the fuel mixing uniformity and injection accuracy, and is suitable for ship power, heavy vehicles and construction machinery.

CN120667292APending Publication Date: 2025-09-19HARBIN ENG UNIV
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Patent Information

Application Number
CN202511089462.X
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-08-05
Publication Date
2025-09-19

AI Technical Summary

Technical Problem

The existing methanol-diesel dual-fuel injection system has a complex structure, large injector size, difficult cylinder head installation, poor fuel premixing ability and inflexible injection control, making it difficult to achieve precise control and synchronous mixing.

Method used

A methanol-diesel dual-fuel internal mixing injector with independent control is designed. It includes methanol and diesel control components, a pressure control chamber, a ball valve, a needle valve and a premix pressure chamber. The independent control and internal mixing injection of the fuel are achieved through the combination of an electromagnet and a plunger.

Benefits of technology

It improves the timing accuracy, flow stability, mixing uniformity and injection control precision of fuel injection, reduces the system modification cost and engineering difficulty, and adapts to the fuel ratio adjustment under different working conditions.

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Abstract

The invention relates to the field of power and energy engineering, in particular to a methanol-diesel dual-fuel internal mixing type fuel injector capable of being independently controlled. In order to overcome the defects that in the prior art, a dual-fuel injection system is complex in structure, the size of an oil injector is large, a cylinder cover is difficult to install, the fuel premixing capacity is poor, and injection control is not flexible, the technical scheme is that the methanol-diesel oil dual-fuel internal mixing type oil injector capable of being independently controlled comprises an oil injector shell; the fuel injector shell is provided with a methanol fuel inlet, a diesel fuel inlet, a fuel injection hole as well as a methanol oil way and a diesel oil way which are respectively connected with the methanol fuel inlet and the diesel fuel inlet; a methanol control assembly, a diesel oil control assembly, a pressure control chamber, a ball valve, a needle valve and a premixing pressure cavity are arranged in the oil injector, injection of methanol and injection of diesel oil can be controlled respectively, and mixed injection of two kinds of fuel can be achieved in the premixing pressure cavity. The methanol-diesel oil dual-fuel efficient mixed injection system is suitable for modification work of an engine oil injection system needing to achieve methanol-diesel oil dual-fuel efficient mixed injection and precise control in the fields of ship power, heavy vehicles, engineering machinery and the like.
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