一种汽车燃油泵
By installing a filter assembly and guide structure at the external protrusion of the automotive fuel pump, the problems of uneven fuel intake and impurity intake in traditional fuel pumps are solved, achieving higher fuel intake accuracy and uniformity, and improving the engine's operational stability and efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG HONGRUI FOUND AUTO PARTS
- Filing Date
- 2025-09-28
- Publication Date
- 2026-07-17
AI Technical Summary
Traditional automotive fuel pumps suffer from problems such as uneven fuel flow, low fuel injection accuracy, and easy intake of impurities during the fuel injection process, which affect engine performance.
A filter assembly, including a filter screen and a guide structure, is installed on the external protrusion of the pump body. The guide structure guides the oil to move in a straight line. A positioning rod and a locking slot are set in the filter assembly to ensure the stability of the filter assembly. The flow channel is designed to reduce the formation of eddies.
It improves the precision and uniformity of fuel intake, prevents impurities from entering, reduces energy loss, and enhances the engine's operational stability and efficiency.
Smart Images
Figure CN224515289U_ABST
Abstract
Claims
1. A fuel pump for automobiles, comprising a pump body (1) and a pump core (2) disposed within the pump body (1), wherein the upper end of the pump core (2) is an oil outlet end extending outside the pump body (1), and the lower end is provided with a plunger (3) for sucking and pressing oil, characterized in that: The pump body (1) has an external protrusion (11) for connecting an external oil inlet pipe and having a guide channel (111). The external protrusion (11) has a recessed cavity (112) at its inlet end that forms a stepped configuration with the guide channel (111). A filter assembly (4) is provided in the recessed cavity (112) for filtering the flowing oil and extending into the guide channel (111). The external protrusion (11) has a guide structure (5) on the inner wall of the guide channel (111) that provides movement guidance. The guide structure (5) causes the oil to move in a straight line along the guide direction after entering.
2. The automotive fuel pump according to claim 1, characterized by: The cavity (112) is provided with a plurality of positioning rods (1121) for quickly defining the final position of the filter assembly (4) in the cavity (112), and the filter assembly (4) is provided with positioning holes (6) that engage with the positioning rods (1121).
3. The automotive fuel pump of claim 2, wherein: The filter assembly (4) includes an assembly ring (41) and a filter cylinder (42). The positioning hole (6) is disposed on the assembly ring (41). The filter cylinder (42) is detachably connected to the assembly ring (41) and extends into the guide channel (111). The outer surface of the filter cylinder (42) is in contact with the inner wall of the external protrusion (11).
4. The automotive fuel pump according to claim 3, characterized in that: The assembly ring (41) is provided with a locking slot (411) located between two adjacent positioning holes (6). The locking slot (411) includes a guide section (4111) and a locking section (4112). One end of the filter cylinder (42) is provided with a locking block (421) matching the number of the locking slots (411). The locking block (421) reaches the locking section (4112) through the guide section (4111) and engages with the locking section (4112) by rotation.
5. The automotive fuel pump according to claim 4, characterized in that: The locking segment (4112) has a conical configuration.
6. The automotive fuel pump of claim 1, wherein: The guide structure (5) includes a plurality of guide grooves (51) evenly distributed along the circumferential direction of the external protrusion (11), and the guide grooves (51) gradually narrow along the guide direction.
7. The automotive fuel pump of claim 6, wherein: The guide groove (51) is provided with a guide protrusion (7), which is in the shape of a water droplet.