Two-stage series-connection high-pressure fuel pump

A high-pressure fuel and secondary pump technology, applied in the field of oil pumps, can solve the problems of heavy weight, large space size, and inability to meet new engines, and achieve the effect of light weight and small space size

Inactive Publication Date: 2017-10-20
XINXIANG AVIATION IND GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The high-pressure fuel pump of the existing engine is two independent fuel pumps. Due to the improvement of the overall performanc

Method used

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  • Two-stage series-connection high-pressure fuel pump

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Example Embodiment

[0007] Such as figure 1 As shown, the technical solution of the present invention is that the flange at the left end of the main pump housing 1 and the flange at the right end of the secondary pump housing 7 are respectively provided with an axial hole that is slidingly matched with the positioning pin 5 and a sealing ring 4 A matching annular groove, the left end of the main pump flange is provided with a positioning block 17 that matches the groove on the right end of the secondary pump flange, and screw holes are evenly distributed on the outside of the two flanges. The function of the positioning pin is to ensure the concentricity requirements of the main pump and the secondary pump. The driving shaft 16 of the main pump is driven by a motor. The left end of the main pump shaft is provided with an external spline that engages with the internal spline of the coupling sleeve 13, and the right end of the secondary pump driving shaft 10 is provided with an internal spline that ...

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Abstract

The invention discloses a two-stage series high-pressure fuel pump, which comprises a motor, a main pump driving gear, a main pump driven gear, a secondary pump driving gear, a secondary pump driven gear, a main pump floating bearing assembly, and a main pump fixed bearing assembly , the secondary pump floating bearing assembly, the secondary pump fixed bearing assembly, the main pump compensation spring and the secondary pump compensation spring, the flange at the left end of the main pump casing and the flange surface at the right end of the secondary pump casing are provided with sliding pins The matching axial hole and the annular groove matching the sealing ring, the left end face of the main pump flange is provided with a positioning block matching the groove on the right end face of the secondary pump flange, and on the outside of the above two flanges Screw holes are evenly distributed, the driving shaft of the main pump is driven by a motor, and the left end of the main pump shaft is provided with an external spline that engages with the internal spline of the coupling sleeve, and the internal spline at the left end of the coupling sleeve is in contact with the The external spline on the right end of the secondary pump shaft engages. The invention has the advantages of light weight and small spatial dimensions.

Description

Technical field: [0001] The invention relates to an oil pump, in particular to a two-stage serial high-pressure fuel pump. Background technique: [0002] The existing high-pressure fuel pumps of the engine are two independent fuel pumps. Due to the improvement of the comprehensive performance requirements of the engine, the two fuel pumps have a large weight and a large space size, which cannot meet the requirements of the new engine. Invention content: [0003] The object of the present invention is to provide a two-stage series high-pressure fuel pump with light weight and small space size. [0004] The technical solution for realizing the purpose of the present invention is a two-stage series high-pressure fuel pump, including a motor, a main pump driving gear, a main pump driven gear, a secondary pump driving gear, a secondary pump driven gear, a main pump floating bearing assembly, The fixed bearing assembly of the main pump, the floating bearing assembly of the seco...

Claims

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Application Information

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IPC IPC(8): F02M37/08F02M37/18F04C11/00
CPCF02M37/08F02M37/18F04C11/00
Inventor 葛中伟李传仓张赢权李征乾毋洲杨振军侯常亮
Owner XINXIANG AVIATION IND GROUP
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