A fuel injector with filter inner core

Abstract

The invention discloses an oil atomizer with filter inner core, and relates to the field of automobile oil atomizers. The oil atomizer comprises the oil atomizer body and an oil nozzle coupling element connected with head of the oil atomizer body; a first oil inlet channel and a first oil outlet channel are formed in the oil atomizer body; the oil outlet channel is communicated with an oil storagecavity, and the oil outlet channel is communicated with an oil return pipe; the lower end of the oil storage cavity is communicated with a filtering mechanism; the filtering mechanism comprises a filtering cavity and a primary filter screen communicated with the lower end of the oil storage cavity and fixed on the upper end surface of the filtering cavity; a secondary filter screen and a tertiaryfilter screen which are cone-shaped and are sequentially arranged below the primary filter screen from top to bottom; the lower end of the tertiary filter screen is communicated with a second oil outlet channel; the second oil outlet channel is communicated with a second oil inlet channel; and a bottom corner of the secondary filter screen and the bottom corner of the tertiary filter screen are correspondingly provided with the annular primary filter screen round angle with circular cross section and the annular secondary filter screen round angle with circular cross section. According to theoil atomizer with filter inner core, filtered residual impurities which are cleaned automatically in the oil atomizer, so that the problem that workers need to frequently dismount and replace filterelements is completely eradicated.

Description

technical field [0001] The invention relates to the field of automobile fuel injectors, in particular to a fuel injector with a filter inner core. Background technique [0002] In order to ensure the uninterrupted operation of the diesel engine, the fuel from the fuel tank must be filtered to filter out the impurities in the oil. If the impurities enter the injector, the parts of the injector will be easily worn or the needle valve will be stuck. The reliability and service life of the fuel injector. At present, the common fuel injector assembly uses a gap filter (also called a filter element) in the oil pipe joint to filter the impurities in the oil, and some of them are in the fuel injector body. A slit filter is set in the oil inlet hole to filter impurities. The principle of the slit filter is that there is a narrow gap between the slit filter and the wall of the storage chamber, and the gap is 0.06-0.15 mm. The oil can pass through the gap and the impurities will be st...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a fuel injector with a filter core, which can automatically clean the residual impurities filtered in the fuel injector, completely eliminating the problem of workers frequently disassembling and replacing filter cores, Thereby effectively solved the technical problem mentioned in above-mentioned background

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