Oil nozzle structure with blockage switching function

Through the design of multiple oil channels and pressure sensors, automatic switching of oil channels of the injector nozzle and rapid cleaning of the filter net are achieved, which solves the interruption problem caused by injector blockage, improves the working reliability and adaptability of the injector nozzle, and reduces maintenance costs.

CN120487461AActive Publication Date: 2025-08-15ZHEJIANG BATON DYNAMICS SYST CO LTD
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Patent Information

Application Number
CN202510843622.9
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-06-23
Publication Date
2025-08-15
Estimated Expiration
2045-06-23

AI Technical Summary

Technical Problem

The oil passage of the existing fuel injector nozzle is easily blocked, resulting in interruption of fuel injection, and requires shutdown and disassembly and cleaning. The operation is cumbersome and the maintenance cost is high. The lack of automatic detection and switching mechanisms makes it difficult to adapt to complex working conditions.

Method used

It adopts a multi-group oil channel design, combined with a pressure sensor and a high-pressure controller, to determine the blockage by detecting the pressure difference of the oil channel, automatically switch the oil channel, and realize oil channel switching through high-pressure input switch and opening and closing plate, and clean the filter with backflush to ensure the unobstructed oil channel.

Benefits of technology

The stable and continuous operation of the fuel injector is achieved, which reduces maintenance frequency and cost, extends service life, and improves the adaptability to complex working conditions and fuel injection effect.

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Abstract

The invention relates to the field of automobile engine oil nozzles, in particular to an oil nozzle structure with a blockage switching function, which comprises an oil nozzle main body and an oil return assembly, and the oil return assembly is communicated with the top end of the oil nozzle main body; an inner cavity of the oil nozzle body is provided with a plurality of oil channels, one ends of the oil channels are communicated with a main channel, and the main channel is located in the center of the inner cavity of the oil nozzle body. By arranging the multiple sets of oil ducts, the pressure sensor, the high-pressure controller and the high-pressure input switch, the pressure sensor is used for detecting the pressure difference of the oil ducts to judge the blocking condition, then the high-pressure controller controls the high-pressure input switch to close the blocked oil ducts and open the normal oil ducts, and the opening and closing plate is driven through pressure linkage to switch oil ways; the problems that in the prior art, when an oil duct of an oil nozzle is blocked, oil injection is prone to being interrupted, shutdown disassembly and cleaning are needed, operation is tedious, maintenance cost is high, an automatic detection and switching mechanism is lacked, and complex working conditions are difficult to adapt are solved.
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