Modular filter element upper cover assembly for diesel filter

Abstract

The invention discloses a modular filter element upper cover assembly for a diesel filter. The upper cover assembly comprises an upper shell assembly and a filter element assembly; the upper shell assembly comprises a main body part, a cylindrical rotary cover and a gland part, and a necking part is arranged at the top of the rotary cover; the gland part comprises two or more gland ring sections,and all the gland ring sections are spliced to be a circular ring shape on the same horizontal plane in the circumferential direction; the main body part comprises a cover cylinder, a shoulder part and a connecting cylinder which are sequentially connected from top to bottom; and the filter element assembly comprises a central tube, a filter layer with an annular section, a filter element upper end cover and a filter element lower end cover, and a spiral gas guide groove used for guiding gas is formed in the outer wall of the central tube. According to the upper cover assembly, the gas in fuelcan be prevented from being accumulated at the central tube of a filter element, the sealing performance is high, the structure of the upper cover assembly adopts modular design, the assembly and disassembly of all components are relatively convenient, and the assembly and disassembly operation of the diesel filter is facilitated.

Description

technical field [0001] The invention relates to a diesel filter system for motor vehicles, in particular to a modular assembly structure of a diesel filter. Background technique [0002] Motor vehicle three filter refers to the air filter, fuel filter and oil filter. The "three filters" filter the air, oil and diesel on the diesel engine, so as to protect the engine. [0003] In recent years, emission regulations and standards have been continuously improved. OEMs and engine factories have put forward the target requirements of lightweight, modularization, integration and low emission. The original metal material auto parts have been gradually replaced by organic engineering plastics, and the "automobile" More and more "three filter" products are replaced by plastic case air filter, plastic case fuel filter and plastic case oil filter products. The use of organic engineering plastics as raw materials for production not only meets the requirements of national environmental ...

AI Technical Summary

Problems solved by technology

These products have imperfections, such as low integration of components, heaters and water level sensors are independent interfaces, and there is no modular division of filter components, which makes the existing filter assembly and installation difficult. It is more complicated, the disassembly and installation when replacing the filter element is more cumbersome, the filter sealing performance needs to be further improved, etc.

Another example is that when the fuel passes through the filter layer, a small amount of gas contained in the fuel will accumulate at the center tube of the filter element. After a large amount of accumulated gas, it will flow into the motor vehicle oil as the fuel passes through the center tube of the filter element and the oil outlet pipe at one time. road, causing the motor vehicle to stall, and it is not easy to re-ignite after stalling

Images