CN209145751U - A kind of diesel electric-controlled high-pressure common rail oil feed pump - Google Patents
A kind of diesel electric-controlled high-pressure common rail oil feed pump Download PDFInfo
- Publication number
- CN209145751U CN209145751U CN201821723289.XU CN201821723289U CN209145751U CN 209145751 U CN209145751 U CN 209145751U CN 201821723289 U CN201821723289 U CN 201821723289U CN 209145751 U CN209145751 U CN 209145751U
- Authority
- CN
- China
- Prior art keywords
- oil
- plunger
- valve
- pump
- fuel
- 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.)
- Active
Links
Landscapes
- Fuel-Injection Apparatus (AREA)
Abstract
A kind of diesel electric-controlled high-pressure common rail oil feed pump is made of camshaft, the aluminum pump housing, gear fuel supply pump, plunger bushing, plunger, tappet body, plunger spring, spring base, inlet valve, delivery valve, oil inlet attachment screw, solenoid valve with feeding pressure stabilizing device etc.；Camshaft is installed in the middle part of the pump housing, is axially followed successively by camshaft, end cap, the pump housing and gear fuel supply pump；Tappet body is contacted with the cam of camshaft, the tappet body other side and plunger contact；Camshaft rotation, driving tappet body, plunger pump, and complete the process of oil suction pump oil；Oil inlet attachment screw with feeding pressure stabilizing device is one check valve of increase on the basis of oil inlet screw, and when input pressure is excessive, stabilising arrangement is opened, oil inlet pressure release, to play the stable effect of pressure.
Description
Technical field
The utility model relates to diesel engine high-pressure co-rail fuel oil pump technical field, in particular to a kind of 40kW or less non-rice habitats
Use for diesel engine low cost Electrocontrolled high-pressure common rail oil feed pump.
Background technique
It is required according to Air Pollution Prevention Law, from April 1st, 2016, stops manufacture, import and sale dress with the
The non-rice habitats mechanically moving of two-stage diesel engine, all manufactures, import and sale non-rice habitats mechanically moving should fill with meeting
The diesel engine that the standard phase III requires.World today's bavin is had become using high pressure common rail fuel injection system on a diesel engine
One of the Main Trends of The Development of oil machine technology.Stable high-pressure injection may be implemented not only with complete in high pressure common rail fuel injection system
Kind combustion process, can also be independently controlled injection characteristics, there is engine power performance, economy and emission performance greatly
Raising and improvement.
High-pressure common-rail fuel system specifically includes the components such as common rail pump, common rail pipe, fuel injector, ECU, sensor.Fuel oil from
Fuel tank inputs common rail pump through fuel filter, in plunger cavity pressurize after be sent in common rail pipe, the pressure in common rail pipe according to
The pressure adjustment signal control that ECU is issued, fuel oil are defeated by fuel injector through high-pressure oil pipe, fuel injector according to the instruction that ECU is issued with
Fuel oil is sprayed into the combustion chamber of diesel engine by suitable oil spout movement.Common rail pump is the excellent high-pressure common rail fuel oil spray of this environmental-protecting performance
The important composition component for penetrating system is able to achieve the rationalization control to common rail pressure.
The light duty diesel engine of the prior art is mostly mechanical pump, mechanical array oil spout pumping system jet pressure power is lower,
Fuel-flow control conversion is relatively slow when variable working condition and can not accurately control oil mass and injection time progress full working scope, causes matching
Diesel engine be unable to satisfy increasingly strict emission regulation demand.And common rail pump selling price is high, maintenance cost is higher, and oil product is suitable
Answering property is poor, there is the demand of more specific covering 40kw or so non-rice habitats use for diesel engine low cost common rail pump in the market.
Utility model content
The utility model provides a kind of diesel electric-controlled high-pressure common rail oil feed pump, including the aluminum pump housing, gear type oil transportation
Pump, camshaft, pump oil component, tappet body, inlet valve, solenoid valve and delivery valve, the pump oil component include plunger bushing, plunger and
Plunger spring only opens up fuel oil oil duct in the aluminum pump housing；The plunger bushing is set to aluminum pump housing top；It further include bringing into
The oil inlet attachment screw of oil pressure stabilising arrangement, the oil inlet attachment screw and inlet valve, solenoid valve are highly set to together plunger
At left and right sides of set, fuel gallery is opened up in plunger bushing；Oil pressure stabilising arrangement is arranged in the oil inlet attachment screw, and the oil pressure is stablized
Device is made of steel ball, spring, back leakage connection and oil inlet screw, and spring mounting hole is equipped in back leakage connection, is set in oil inlet screw
Steel ball sealing face is screwed into oil inlet screw head side after being packed into spring and steel ball in back leakage connection jointly.
Further, the solenoid valve is fuel cut-off control mode, and the inlet valve is by oil inlet valve seat, oil inlet valve rod, magnet
Composition；Weld magnet on oil inlet valve rod, the magnet other side is solenoid valve, and the inlet valve is normally open, when solenoid valves,
Attract magnet dynamic to electromagnetism displaceable valve with oil inlet valve rod, closes oil inlet passage.
Further, the fuel oil enters plunger bushing the first fuel oil oil duct from oil inlet attachment screw, then passes through inlet valve
Oil duct in seat enters the second fuel oil of plunger bushing oil duct under oil inlet valve rod normally open, finally reaches plunger cavity；First fuel oil
Oil duct and the second fuel oil oil duct are evenly arranged with oil inlet attachment screw, inlet valve, solenoid valve coaxial line, and the first fuel oil oil duct is 2
A, the second fuel oil oil duct is 4.
Further, the camshaft is supported by both ends sliding bearing, and forced feed lubrication oil duct is equipped in the pump housing and is entered
Two side bearings, the sliding bearing use flanging type bearing, are the integrated sliding bearing with axial thrust, the brearing bore
Friction-Reducing Coating is designed with thrust surface.
Further, cam shaft mounting hole is opened up inside the connecting key of the gear fuel supply pump and camshaft, outside is
The keyway of same shape is arranged on gear for hexagram shape, can be caught in connecting key, and the connection key material is polyether-ether-ketone.
The utility model is to match 40KW or so non-rice habitats use for diesel engine low cost common rail demand pump on existing market
Exploitation.Oil feed pump is by camshaft, the aluminum pump housing, gear fuel supply pump, plunger bushing, plunger, tappet body, plunger spring, spring
Seat, inlet valve, delivery valve, oil inlet attachment screw, solenoid valve with feeding pressure stabilizing device etc. form.
Camshaft is installed in the middle part of the pump housing, is axially followed successively by camshaft, end cap, the pump housing and gear fuel supply pump.Tappet body
It is contacted with the cam of camshaft, the tappet body other side and plunger contact.Camshaft rotation, driving tappet body, plunger are up and down reciprocatingly transported
It is dynamic, complete the process of oil suction pump oil.Oil inlet attachment screw with feeding pressure stabilizing device is to increase by one on the basis of oil inlet screw
A check valve, when input pressure is excessive, stabilising arrangement is opened, oil inlet pressure release, to play the stable effect of pressure.
Fuel-flow control conversion is very fast when the utility model sprays higher pressure, variable working condition and can be to oil mass and injection time
It carries out full working scope accurately to control, can satisfy increasingly strict emission regulation demand, and the utility model maintenance cost is low, oil product
Adaptability is good.
Detailed description of the invention
Fig. 1 is the radial section structural schematic diagram of the utility model.
Fig. 2 is the axial section structural schematic diagram of the utility model.
Fig. 3 is the structural schematic diagram of the oil inlet attachment screw with input pressure stabilising arrangement of the utility model.
Fig. 4 is the plunger fuel oil oil duct axial arrangement schematic diagram of the utility model.
Fig. 5 is the plunger fuel oil oil duct radial structure schematic diagram of the utility model.
Specific embodiment
With reference to Fig. 1,2,3,4 and 5,
A kind of diesel electric-controlled high-pressure common rail oil feed pump, camshaft 3 are packed into 1 middle part of the aluminum pump housing, are axially followed successively by the pump housing
1, gear fuel supply pump 2, cam position, the pump housing top from bottom to up successively install tappet body 5, plunger 42, plunger bushing 41.Column
The installation oil inlet attachment screw 6 and inlet valve 7, solenoid valve 8 of 41 left and right sides coaxial line of plug sleeve.Fuel oil passes through oil inlet attachment screw
Plunger bushing fuel gallery 10, oil inlet valve body oil duct 11, oil duct 12 are passed sequentially through, plunger cavity 13 is entered.Plunger 42 is in cam
Under 3 driving effect of axis, 13 internal combustion oil pressure of plunger cavity is gone out into delivery valve 9.Camshaft 3 is supported by both ends sliding bearing, is set in the pump housing 1
There is forced feed lubrication oil duct to enter two side bearings, sliding bearing is flanging type axial thrust integrated bearing, brearing bore and thrust
Face is designed with Friction-Reducing Coating.By connection key connection, connecting key is board-like hexagram knot for camshaft 3 and gear fuel supply pump 2
Structure, center open up cam shaft mounting hole, and outside is hexagram shape, there is the keyway of same shape, connecting key external card on gear
Driving gear is become owner of, internal and cam axis connection passes through camshaft and rotates transmitting torque drive gear rotation.
Claims (5)
1. a kind of diesel electric-controlled high-pressure common rail oil feed pump, including the aluminum pump housing (1), gear fuel supply pump (2), camshaft (3),
Pump oil component (4), tappet body (5), inlet valve (7), solenoid valve (8) and delivery valve (9), the pump oil component (4) includes plunger
(41), plunger (42) and plunger spring (43) are covered, only opens up fuel oil oil duct in the aluminum pump housing (1)；The plunger bushing (41)
It is set to the aluminum pump housing (1) top；It is characterized by also including the oil inlet attachment screw (6) with input pressure stabilising arrangement, institutes
State oil inlet attachment screw (6) and inlet valve (7), solenoid valve (8) is highly set to together at left and right sides of plunger bushing (41), plunger bushing
(41) fuel gallery is opened up in；Oil pressure stabilising arrangement is arranged in the oil inlet attachment screw (6), and the oil pressure stabilising arrangement is by steel ball
(61), spring (62), back leakage connection (63) and oil inlet screw (64) composition, back leakage connection (63) is interior to be equipped with spring mounting hole, into
Steel ball sealing face is set in whelk nail (64) is screwed into oil inlet screw (64) jointly after being packed into spring and steel ball in back leakage connection (63)
Head side.
2. a kind of diesel electric-controlled high-pressure common rail oil feed pump according to claim 1, it is characterised in that: the solenoid valve
It (8) is fuel cut-off control mode, the inlet valve (7) is made of oil inlet valve seat (71), oil inlet valve rod (72), magnet (73)；Oil inlet
Magnet (73) are welded on valve rod (72), magnet (73) other side is solenoid valve (8), and the inlet valve (7) is normally open, electromagnetism
When valve (8) is powered, attracts magnet (73) dynamic to electromagnetism displaceable valve with oil inlet valve rod (72), close oil inlet passage.
3. a kind of diesel electric-controlled high-pressure common rail oil feed pump according to claim 1, it is characterised in that: the fuel oil from into
Oily attachment screw (6) enters the first fuel oil of plunger bushing oil duct (10), then by the oil duct (11) in oil inlet valve seat (71), into
Enter the second fuel oil of plunger oil duct (12) under oil valve bar (72) normally open, finally reaches plunger cavity (13)；First fuel oil oil duct
(10) it is evenly arranged with the second fuel oil oil duct (12) with oil inlet attachment screw (6), inlet valve (7), solenoid valve (8) coaxial line, the
One fuel oil oil duct (10) is 2, and the second fuel oil oil duct (12) is 4.
4. a kind of diesel electric-controlled high-pressure common rail oil feed pump according to claim 1 to 3, it is characterised in that: described convex
Wheel shaft (3) is supported by both ends sliding bearing, and forced feed lubrication oil duct is equipped in the pump housing (1) and enters two side bearings, the sliding
Bearing uses flanging type bearing, is the integrated sliding bearing with axial thrust, the brearing bore and thrust surface are designed with
Friction-Reducing Coating.
5. a kind of diesel electric-controlled high-pressure common rail oil feed pump according to claim 1 to 3, it is characterised in that: the tooth
Open up cam shaft mounting hole inside the connecting key of wheeled oil transfer pump (2) and camshaft (3), outside is hexagram shape, on gear
The keyway of same shape is set, connecting key can be caught in, the connection key material is polyether-ether-ketone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821723289.XU CN209145751U (en) | 2018-10-23 | 2018-10-23 | A kind of diesel electric-controlled high-pressure common rail oil feed pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821723289.XU CN209145751U (en) | 2018-10-23 | 2018-10-23 | A kind of diesel electric-controlled high-pressure common rail oil feed pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209145751U true CN209145751U (en) | 2019-07-23 |
Family
ID=67269359
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821723289.XU Active CN209145751U (en) | 2018-10-23 | 2018-10-23 | A kind of diesel electric-controlled high-pressure common rail oil feed pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209145751U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109268180A (en) * | 2018-10-23 | 2019-01-25 | 思达耐精密机电（常熟）有限公司 | A kind of diesel electric-controlled high-pressure common rail oil feed pump |
-
2018
- 2018-10-23 CN CN201821723289.XU patent/CN209145751U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109268180A (en) * | 2018-10-23 | 2019-01-25 | 思达耐精密机电（常熟）有限公司 | A kind of diesel electric-controlled high-pressure common rail oil feed pump |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101421508B (en) | Fuel supply system for an internal combustion engine | |
| US3779225A (en) | Reciprocating plunger type fuel injection pump having electromagnetically operated control port | |
| US7574995B2 (en) | Fuel injection system | |
| CN109268180A (en) | A kind of diesel electric-controlled high-pressure common rail oil feed pump | |
| CN103644057A (en) | Fuel injector capable of injecting fuel to engine quantitatively at fixed time in controllable manner | |
| CN209145751U (en) | A kind of diesel electric-controlled high-pressure common rail oil feed pump | |
| CN106523226B (en) | High-pressure common rail system of diesel engine | |
| CN201778934U (en) | Diesel engine fuel injection electric control single combination pump | |
| CN203627055U (en) | Oil sprayer capable of controlling sprayed fuel oil provided for engine in fixed time and quantity | |
| US3812829A (en) | Fuel injection system and associated structure | |
| CN106523228A (en) | Fuel-injection electronic unit pump for low-power diesel generator | |
| CN104632317A (en) | Vent valve device for high-power low-speed marine diesel engine | |
| CN101922391B (en) | Fuel jet electronic combination unit pump of diesel engine | |
| CN209483522U (en) | A kind of diesel electric-controlled high-pressure common rail oil feed pump | |
| WO2002053903B1 (en) | Fuel injection pump for an internal combustion engine | |
| CN206707900U (en) | A kind of low-power diesel-driven generator fuel jet electronic monoblock pump | |
| CN107143448A (en) | Miniature air-cooling single cylinder diesel engine fuel oil sprays single cylinder electric control pump | |
| JP2001207935A (en) | Fuel injection device assembly having improved solenoid operating type check valve | |
| JPS6353379B2 (en) | ||
| CN209483519U (en) | A kind of diesel electric-controlled high-pressure common rail oil feed pump of anti-leak | |
| CN204492917U (en) | A kind of high-power marine low-speed diesel engine discharge valve apparatus | |
| CN206830354U (en) | Miniature air-cooling single cylinder diesel engine fuel oil sprays single cylinder electric control pump | |
| US6966301B2 (en) | Accumulator fuel system | |
| CN105257362A (en) | Common rail type air cylinder oil injection lubricating system | |
| CN2723713Y (en) | Single pump type synthetic in-line pump |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |