CN106121889A - High Enhanced diesel engine constant-pressure oil injection pump - Google Patents

High Enhanced diesel engine constant-pressure oil injection pump Download PDF

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Publication number
CN106121889A
CN106121889A CN201610758185.1A CN201610758185A CN106121889A CN 106121889 A CN106121889 A CN 106121889A CN 201610758185 A CN201610758185 A CN 201610758185A CN 106121889 A CN106121889 A CN 106121889A
Authority
CN
China
Prior art keywords
plunger
valve
diesel engine
pressure
spring
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201610758185.1A
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Chinese (zh)
Inventor
谢远文
陈廷博
彭琦
扈爽
缪强
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Chongqing Hongjiang Machinery Co Ltd
Original Assignee
Chongqing Hongjiang Machinery Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Chongqing Hongjiang Machinery Co Ltd filed Critical Chongqing Hongjiang Machinery Co Ltd
Priority to CN201610758185.1A priority Critical patent/CN106121889A/en
Publication of CN106121889A publication Critical patent/CN106121889A/en
Pending legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M59/00Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
    • F02M59/20Varying fuel delivery in quantity or timing
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M59/00Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
    • F02M59/44Details, components parts, or accessories not provided for in, or of interest apart from, the apparatus of groups F02M59/02 - F02M59/42; Pumps having transducers, e.g. to measure displacement of pump rack or piston
    • F02M59/46Valves
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M59/00Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
    • F02M59/44Details, components parts, or accessories not provided for in, or of interest apart from, the apparatus of groups F02M59/02 - F02M59/42; Pumps having transducers, e.g. to measure displacement of pump rack or piston
    • F02M59/46Valves
    • F02M59/462Delivery valves

Abstract

A kind of high Enhanced diesel engine constant-pressure oil injection pump, the plunger matching parts including the pump housing and being assemblied in the pump housing and oil outlet valve component, tooth bar governor motion, plunger spring and flange components.Its plunger matching parts and oil outlet valve component are pressed on the pump housing by hexagon socket cap head screw, plunger bushing and delivery valve seat are integrated design, delivery valve and relief valves designs are valve form in valve, use alignment pin to be connected location between pump housing lower end and flange components, and on flange components, be designed with diesel engine starting air distribution road.This constant-pressure oil injection pump just has compact conformation, the fastening of part and high-pressure tightness high, and the quantity coordinating face and high pressure sealing face is few, plunger bushing highly reliable, can effectively meet diesel engine starting requirement, the advantage such as make engine block more simplify, compact.

Description

High Enhanced diesel engine constant-pressure oil injection pump
Technical field
The invention belongs to Diesel Engine Technique Field, be specifically related to the constant-pressure oil injection pump technology of diesel engine.
Background technology
Fuel Feeding System for Diesel Engine system has considerable influence to the performance of diesel engine.At present due to strengthening with to discharge Strict restriction, it is desirable to oil supply system provides higher expulsion pressure and injection rate.Big marine diesel engine uses equipressure Injection pump is relatively common, and for four strokes, direct injection, exhaust gas turbocharge, in diesel engine cold, irreversible, mesh Front general constant-pressure oil injection pump structural strength is the highest, it is relatively low to be suitable for pressure limit, it is impossible to meet needs.
Summary of the invention
It is an object of the invention to provide a kind of high Enhanced diesel engine constant-pressure oil injection pump, have pressure height, compact conformation, The advantages such as good reliability.Be applicable to four strokes, direct injection, exhaust gas turbocharge, diesel engine cold, irreversible, isobaric spray It is 500~1000r/min that oil pump meets such diesel engine rated speed, and single cylinder rated power is 320~380kW, and cylinder diameter is φ 220~φ 280mm, stroke are the requirement of 350~400mm.
Technical scheme is as follows:
A kind of high Enhanced diesel engine constant-pressure oil injection pump, the plunger matching parts including the pump housing and being assemblied in the pump housing and delivery valve Assembly, tooth bar governor motion, plunger spring and flange components etc..Wherein, plunger matching parts and oil outlet valve component are by interior hexagonal circle Chapiter screw is pressed on the pump housing, and the bottom of plunger coordinates through gear ring with plunger spring and lower spring cup, and gear ring and tooth bar are joined Conjunction composition tooth bar governor motion pilot plunger helix is to regulate fuel delivery, and plunger spring upper end props up upper spring disk, and lower end is tight Spring base on the lower, lower spring cup is simultaneously connected with plunger lower end and tappet upper end.Location is used between pump housing lower end and flange components Pin connects location, and described flange components includes tappet and flange seat, and tappet penetrates flange seat and forms cooperation, and tappet has ring-like gas Road, is distributed startup air inlet, outlet passage on flange seat, lead to starting air inlet, outlet when tappet moves to annular air channel When road communicates, air is entered by flange seat inlet channel, flows through the ring-like air flue on tappet, finally by giving vent to anger on flange seat Passage flows out, and tappet is during moving up and down, and the timing realizing air flue respectively is switched on and off, it is ensured that on the rule that tappet is up Timing is carved connection and is started air, meets diesel engine starting requirement, makes engine block more simplify, compact.
In this injection pump, described plunger matching parts and oil outlet valve component include that the plunger being made up of plunger bushing and plunger is even Part, pressing plate, seal receptacle, oil outlet valve spring, delivery valve, air relief valve and pressure-relief valve spring.The upper end of plunger bushing is as delivery valve Valve seat, i.e. both are integrated design, decrease the quantity of cooperation face and high pressure sealing face, have simplified procedure of processing and cycle, with Time enhance the reliability of plunger bushing.
In this injection pump, delivery valve and relief valves designs are valve form in valve, are sequentially installed with in the valve seat of delivery valve Pressure-relief valve spring, air relief valve, delivery valve, oil outlet valve spring and seal receptacle, compact conformation.
In this injection pump, it is to use the mode of strength screw in compression to connect oil outlet valve component and plunger matching parts, thus real The fastening of existing part and high pressure sealing.That is, seal receptacle is pushed down at oil outlet valve component upper end pressing plate, and by hexagonal circle in strength Chapiter screw is connected with plunger bushing, compresses seal receptacle,
In this injection pump, plunger matching parts uses omoplate formula to be arranged on the pump housing, and plunger bushing passes through strength screw in compression at the pump housing On, it is ensured that the intensity of high-pressure area, effectively prevent mesopore compressive deformation.
In this injection pump, diameter of plunger is Φ 22~Φ 28mm, and lift is 21~25mm.Plunger is optional lubrication, Surface is designed with oil storage annular groove, it is ensured that motor process intermediate fuel oil can pass through gap sufficient lubrication plunger matching parts.Design in plunger bushing There are upper and lower 2 road annular grooves, connect low-voltage fuel back oil road and leakage return flow oil road respectively.
This high Enhanced diesel engine constant-pressure oil injection pump uses the design of above structure, pressure height, compact conformation, good reliability etc. Advantage, can meet rated speed is 500~1000r/min, and single cylinder rated power is 320~380kW, cylinder diameter be φ 220~ φ 280mm, stroke are the requirement of the diesel engine of 350~400mm.
Accompanying drawing explanation
The injection pump section of structure that Fig. 1 is.
Fig. 2 is the section of structure of plunger matching parts and oil outlet valve component.
Fig. 3 is the section of structure of the plunger matching parts that Fig. 1 is used.
Fig. 4 is the section of structure of flange components.
Detailed description of the invention
Below in conjunction with accompanying drawing, this technology is described.
The injection pump of the present invention is traditional type mechanical pump, is arranged on cam shaft for diesel engine, and the rotation of camshaft drives very The reciprocal up and down motion of post, thus drive the up and down motion of plunger, to realize fuel feeding.By pulling tooth bar, gear ring is made to rotate fortune Dynamic, thus drive plunger to rotate, accurately control fuel delivery by plunger helix, with the oil mass requirement under satisfied different operating modes.
Seeing Fig. 1, the injection pump of the present invention includes the pump housing 3 and the plunger matching parts being assemblied in the pump housing and delivery valve group Part 2, tooth bar governor motion, plunger spring 8 and flange components 10 etc..Tooth bar governor motion is made up of gear ring 5 and tooth bar 6.
Visible in conjunction with Fig. 2, plunger matching parts and oil outlet valve component 2 include pressing plate 22, seal receptacle 23, oil outlet valve spring 24, go out Fuel tap 25, air relief valve 26, pressure-relief valve spring 27 and plunger matching parts 28.In conjunction with seeing Fig. 3, plunger matching parts 28 is by plunger 281 He Plunger bushing 282 is constituted.
Wherein, plunger matching parts and oil outlet valve component 2 are pressed on the pump housing 3 by hexagon socket cap head screw 1, plunger Couple uses omoplate formula to install, and the pump housing 3 is provided with a pair corrosion protection screw 4 to reduce the fuel oil impingment corrosion to the pump housing, prolongation Pump housing service life.
The bottom of plunger 281 coordinates through gear ring 5 with plunger spring 8 and lower spring cup 9, and gear ring 5 and tooth bar 6 coordinate regulation Plunger helix is to regulate fuel feeding, and plunger spring 8 upper end props up upper spring disk 7, and lower end is against lower spring cup 9.Lower spring cup 9 is same Time connect plunger 281 lower end and tappet 101 upper end.
Delivery valve 25 and air relief valve 26 use valve arrangement in valve, plunger bushing 282 and delivery valve seat to be designed as integral type, i.e. The upper end of plunger bushing 282 is exactly delivery valve seat, is twisted with plunger bushing 282 by seal receptacle 23 by strength hexagon socket cap head screw 21 Tightly.Delivery valve opening pressure is 1.5MPa~2.0MPa, and decompression valve opening pressure is 11MPa~15MPa.
Plunger 281 is optional lubrication, and surface is designed with oil storage annular groove 283, it is ensured that motor process intermediate fuel oil can be filled by gap Share in the benefit sliding plunger matching parts.Plunger bushing mesopore is designed with upper and lower 2 road annular grooves 284, connects low-voltage fuel back oil road and Leakage Energy respectively Return flow oil road, it is ensured that motor process intermediate fuel oil can pass through gap sufficient lubrication plunger matching parts.
Seeing Fig. 4, flange components 10 includes tappet 101 and flange seat 102.Location is used between the pump housing 3 and flange seat 102 Pin connects location, and tappet 101 penetrates flange seat 102 and forms cooperation.Diesel engine starting air distribution road it is designed with on flange components, On tappet 101, i.e. there is ring-like air flue 103.Startup air inlet, outlet passage 104 and 105 is distributed, when very on flange seat 102 Post 101 moves to annular air channel when communicating with import and export, and air is entered by flange seat inlet channel, flows through the ring-like gas on tappet Road, flows out finally by the outlet passageway on flange seat, and tappet 101, during moving up and down, realizes the timing of air flue respectively It is switched on and off.T-shaped lubricant passage way 106 it is designed with, it is ensured that the lubrication in tappet motor process on tappet 101.
This injection pump is in delivery stroke, and oil pressure in pump chamber raises, during more than the unlatching pressure of delivery valve, and delivery valve gram Taking the spring force of oil outlet valve spring and lift, the hydraulic oil in pump chamber is by high-pressure oil duct press-in high-pressure oil pipe.Fuel feeding terminates After, pump chamber becomes low pressure chamber, and the hydraulic oil in high-pressure oil pipe reversely flows into low pressure chamber through high-pressure oil duct.When hydraulic oil is less than a certain After setting numerical value, delivery valve cuts out.If the oil pressure in high pressure chest is opened higher than air relief valve with superposing sum due to pressure wave transmission During pressure, then air relief valve overcomes the thrust of pressure-relief valve spring to lift, and hydraulic oil enters low pressure chamber, the oil pressure in high-pressure oil duct Obtain pressure release, each cylinder oil pressure balance.

Claims (5)

  1. The highest Enhanced diesel engine constant-pressure oil injection pump, the plunger matching parts including the pump housing and being assemblied in the pump housing and delivery valve group Part, tooth bar governor motion, plunger spring and flange components;It is characterized in that, plunger matching parts and oil outlet valve component are by screw pressure Tight on the pump housing, the bottom of plunger coordinates through gear ring with plunger spring and lower spring cup, and gear ring and tooth bar coordinate composition tooth bar Governor motion, pilot plunger helix is to regulate fuel delivery, and plunger spring upper end props up upper spring disk, and lower end is against lower spring Seat, lower spring cup is simultaneously connected with plunger lower end and tappet upper end;Alignment pin is used to be connected between pump housing lower end and flange components fixed Position, described flange components includes tappet and flange seat, and tappet penetrates flange seat and forms cooperation, and tappet has ring-like air flue, flange Startup air inlet, outlet passage is distributed on Zuo, communicates with starting air inlet, outlet passage when tappet moves to annular air channel Time, air is entered by flange seat inlet channel, flows through the ring-like air flue on tappet, finally by the outlet passageway stream on flange seat Going out, tappet is during moving up and down, and the timing realizing air flue respectively is switched on and off.
  2. High Enhanced diesel engine constant-pressure oil injection pump the most according to claim 1, it is characterised in that plunger matching parts and delivery valve Assembly includes pressing plate, seal receptacle, oil outlet valve spring, delivery valve, air relief valve, pressure-relief valve spring and is made up of plunger bushing and plunger Plunger matching parts;The upper end of plunger bushing as the valve seat of delivery valve, be sequentially installed with in it pressure-relief valve spring, air relief valve, delivery valve, Oil outlet valve spring and seal receptacle, delivery valve and relief valves designs are valve form in valve, and pressing plate is pressed on seal receptacle, and by strength Hexagon socket cap head screw is connected with plunger bushing;Plunger matching parts uses omoplate formula to be arranged on the pump housing.
  3. High Enhanced diesel engine constant-pressure oil injection pump the most according to claim 1, it is characterised in that be designed with T-shaped on tappet Lubricant passage way.
  4. 4. according to the high Enhanced diesel engine constant-pressure oil injection pump required by right 1, it is characterised in that delivery valve opening pressure is 1.5MPa~2.0MPa, decompression valve opening pressure is 11MPa~15MPa.
  5. 5. according to required by right 1 high Enhanced diesel engine constant-pressure oil injection pump, it is characterised in that diameter of plunger be Φ 22~ Φ 28mm, lift is 21~25mm.
CN201610758185.1A 2016-08-30 2016-08-30 High Enhanced diesel engine constant-pressure oil injection pump Pending CN106121889A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610758185.1A CN106121889A (en) 2016-08-30 2016-08-30 High Enhanced diesel engine constant-pressure oil injection pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610758185.1A CN106121889A (en) 2016-08-30 2016-08-30 High Enhanced diesel engine constant-pressure oil injection pump

Publications (1)

Publication Number Publication Date
CN106121889A true CN106121889A (en) 2016-11-16

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106762273A (en) * 2017-03-21 2017-05-31 北京亚新科天纬油泵油嘴股份有限公司 A kind of high pressure fuel pump of oil lubricating
CN111512039A (en) * 2017-12-21 2020-08-07 德尔福汽车系统卢森堡有限公司 High-pressure fuel pump

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN86107583A (en) * 1985-11-05 1987-11-04 奥格斯堡·纽伦堡机械公司伯迈斯特与韦恩柴油机分公司 The control air distributor of reversible combustion engine
KR100740434B1 (en) * 2006-08-14 2007-07-16 현대중공업 주식회사 Control air starting system
CN201810439U (en) * 2010-10-25 2011-04-27 重庆红江机械有限责任公司 Isopiestic pressure oil injection pump
CN205918532U (en) * 2016-08-30 2017-02-01 重庆红江机械有限责任公司 High isobaric injection pump of type of strengthening

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN86107583A (en) * 1985-11-05 1987-11-04 奥格斯堡·纽伦堡机械公司伯迈斯特与韦恩柴油机分公司 The control air distributor of reversible combustion engine
KR100740434B1 (en) * 2006-08-14 2007-07-16 현대중공업 주식회사 Control air starting system
CN201810439U (en) * 2010-10-25 2011-04-27 重庆红江机械有限责任公司 Isopiestic pressure oil injection pump
CN205918532U (en) * 2016-08-30 2017-02-01 重庆红江机械有限责任公司 High isobaric injection pump of type of strengthening

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106762273A (en) * 2017-03-21 2017-05-31 北京亚新科天纬油泵油嘴股份有限公司 A kind of high pressure fuel pump of oil lubricating
CN106762273B (en) * 2017-03-21 2022-05-20 北油电控燃油喷射系统(天津)有限公司 High-pressure fuel pump lubricated by engine oil
CN111512039A (en) * 2017-12-21 2020-08-07 德尔福汽车系统卢森堡有限公司 High-pressure fuel pump
US11365710B2 (en) 2017-12-21 2022-06-21 Delphi Automotive Systems Luxembourg Sa High pressure fuel pump
CN111512039B (en) * 2017-12-21 2022-08-09 德尔福汽车系统卢森堡有限公司 High-pressure fuel pump

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Application publication date: 20161116