Plunger and barrel assembly of oil injection pump of high-power diesel engine

Plunger and barrel assembly of oil injection pump of high-power diesel engine

  • CN 101,694,194 A
  • Filed: 08/20/2009
  • Published: 04/14/2010
  • Est. Priority Date: 08/20/2009
  • Status: Active Application
First Claim
Patent Images

1. plunger and barrel assembly of oil injection pump of high-power diesel engine comprises it is characterized in that the seal ring of the sleeve (1) that is provided with oil inlet hole (1a), the plunger (3) that matches with sleeve (1), sleeve (1) outer surface:

  • The front portion of described sleeve (1) is provided with first spray orifice (1b) that six circumferential spacing radians in edge are arranged, the diameter of first spray orifice (1b) is 9mm to 11mm, mouth is provided with wide 34mm to 36mm in the outer hole of first spray orifice (1b) (1f), one side fillet radius is 14mm to 16mm, and the opposite side fillet radius is the groove (1c) of 4mm to 6mm;

    Described oil inlet hole (1a) is arranged on the middle part of sleeve (1), outer hole (1f) by endoporus (1d), flaring mesopore (1e) and circular arc is formed, endoporus (1d) is diameter 3mm to 4mm, the cylindrical hole of long 3mm to 5mm, the horn opening angle of described mesopore (1e) is 20 °

    , and described outer hole (1f) is the circular arc camber of radius 9mm to 11mm;

    The afterbody of sleeve (1) circumferentially is symmetrically arranged with four second spray orifices (1g), and the vestibule shaft axis angulation of two second spray orifices (1g) wherein is 66 °

    , and second spray orifice (1g) diameter is 9mm to 11mm;

    The outside thread that sleeve (1) tail end is provided for assembling is convenient to install and fix sleeve (1);

    Sleeve (1) is shaped on the vestibule of the described plunger of assembling (3), at the inwall of vestibule and oil inlet hole (1a) one deck nitriding composite bed (10) is set;

    Described plunger (3) front end head is shaped on the spiral chute and the straight trough of control flow rate, skewed slot and straight trough below are the annular arc grooves (11) that an amount of oil is stored in three sections circumferential being used to, the annular arc groove of each section (11) space 15mm, the wide 1mm of annular arc groove (11), dark 1mm.

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