---
publication_id: "OT-2026-000000087"
title: "Fuel pump flow passage structure"
published_at: "2026-09-15T19:02:28.496565Z"
canonical_url: "https://opentechnical.org/p/OT-2026-000000087"
categories:
  - "industrial-motion-power-transmission/fluid-power"
keywords:
  - "f16k24/06"
  - "f16l55/07"
---

# Fuel pump flow passage structure

## Abstract

A novel fuel pumpflow channel passage structure, which comprises an adapter, an air vent valve and a sealing plug, wherein the adapter comprises a body, an input end and an output end; the input end is communicated with the output end through the body; both the input end and the output end have cylindrical inner wall surfaces roughly varying in axial diameters; the input end and the output end define an input pipeline and an output pipeline along the cylindrical inner wall surfaces; the body is provided with an air vent hole and a through hole; the air vent valve is arranged on the air vent hole; and the sealing plug is arranged on the through hole.