CN203627048U - Mechanical fuel pump of high-power engineering machinery diesel engine - Google Patents
Mechanical fuel pump of high-power engineering machinery diesel engine Download PDFInfo
- Publication number
- CN203627048U CN203627048U CN201320731829.XU CN201320731829U CN203627048U CN 203627048 U CN203627048 U CN 203627048U CN 201320731829 U CN201320731829 U CN 201320731829U CN 203627048 U CN203627048 U CN 203627048U
- Authority
- CN
- China
- Prior art keywords
- pump
- speed regulator
- diesel engine
- engineering machinery
- power engineering
- 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.)
- Expired - Fee Related
Links
Images
Abstract
The utility model discloses a mechanical fuel pump of a high-power engineering machinery diesel engine. The mechanical fuel pump of the high-power engineering machinery diesel engine comprises an in-line high-pressure pump, an oil transfer pump and a speed regulator, wherein the speed regulator adopts an RQV-K speed regulator, a flange surface fastened with a gear room of the engine is arranged at the front end of the in-line high-pressure pump, the center distance L between single-cylinder plunger pistons of the in-line high-pressure pump is 38 mm, the diameter D1 of the driving end of a cam shaft is between 35 mm and 38 mm, the lift range h of a cam is 15 mm, and the inner diameter D2 of a connector of each delivery valve is 2.6 mm. The speed regulator is installed at the rear end of the in-line high-pressure pump and is provided with a pressurization compensation connector, the left end of a turning-connection handle of the speed regulator is fastened with a parking handle, the pressurization compensation connector is connected with an air inlet pipe of the engine through a hose, an oil cut-off electromagnetic valve is installed at the top of the speed regulator, and a push rod at the lower end of the oil cut-off electromagnetic valve is connected with the right end of the turning-connection handle of the speed regulator. The oil transfer pump is integrated on the in-line high-pressure pump and is driven by the cam shaft of the in-line high-pressure pump. According to the mechanical fuel pump of the high-power engineering machinery diesel engine, the pump end pressure can reach 1300 Bar, the maximum injection pressure can reach 1500 Bar, the oil supply amount of the oil pump can be stably adjusted, and dynamic response is fast.
Description
Technical field
The utility model belongs to mechanical type oil for diesel engine fuel system, is specifically related to a kind of high-power engineering machinery Diesel Engine Mechanical formula fuel pump.
Background technique
The current discharge capacity of mechanical type diesel engine generally concentrates on below 10 liters, adopts high-pressure service pump in upright arrangement to join RSV speed regulator and meets automobile-used and demand engineering machinery field.When the discharge capacity of motor is during higher than 10 liters, due to the raising of pump end pressure, the increase of mechanical load, RSV speed regulator, due to the structural feature of himself, causes its speed regulation capacity to promote, and cannot meet the speed governing demand of high power engine.
Summary of the invention
The purpose of this utility model is for more than 500 horsepowers, is applied to the diesel engine of engineering machinery field, and a kind of high-power engineering machinery Diesel Engine Mechanical formula fuel pump of steady state speed governing rate is provided.
The technical solution of the utility model: high-power engineering machinery Diesel Engine Mechanical formula fuel pump of the present utility model comprises high-pressure service pump in upright arrangement, oil transfer pump, speed regulator, speed regulator adopts RQV-K speed regulator, high-pressure service pump front end in upright arrangement arranges the flanged surface fastening with engine gear case, high-pressure service pump single cylinder plunger centre distance L=38mm in upright arrangement, camshaft actuated end diameter D1=35mm～38mm, cam lift h=15mm, discharge outlet inner diameter D 2=2.6mm.
Described speed regulator is installed on high-pressure service pump in upright arrangement rear end, and has supercharging compensate interface, and switching handle left end and the shutdown handle of speed regulator are fastening; Supercharging compensate interface adopts flexible pipe to be connected with engine air inlet tube; Fuel Cut Solenoid Valve is installed at speed regulator top, and the push rod of Fuel Cut Solenoid Valve lower end is connected with the switching handle right-hand member of speed regulator.
Described oil transfer pump is integrated on high-pressure service pump in upright arrangement, by the camshaft actuated of high-pressure service pump in upright arrangement.
Advantage of the present utility model: the utility model pump end pressure can reach 1300Bar, and peak injection pressure can reach 1500Bar.Speed regulator rear end is connected by flexible pipe and engine air inlet tube, for the suction pressure after detecting engine supercharging.In the time of low engine speed or idle running, speed regulator regulates oil pump feed amount according to speed of crankshaft; In the time that high engine speeds turns round, suction pressure is higher, can be to the adjusting diaphragm effect of speed regulator, and therefore, speed regulator can regulate fuel delivery according to speed of crankshaft and suction pressure simultaneously.
The utility model can provide fuel delivery for 500 horsepowers and above diesel engine.Adopt inline pump to join RQV-K speed regulator.Because RQV-K speed regulator internal structure rigidity is high, possess supercharging compensate function, can stable regulation oil pump feed amount, dynamic response is fast, meets the requirement of engine test bench characteristic curve.
Oil pump fuel delivery adopts Fuel Cut Solenoid Valve control, and oil-break is thorough, and response is fast.Solenoid valve simple in structure, its adhesive, disconnects and adopts cable control, arranges and is not subject to spatial constraints.
Accompanying drawing explanation
Fig. 1 is plan view of the present utility model.
Fig. 2 is left view of the present utility model.
Fig. 3 is plan view of the present utility model.
Fig. 4 is the plan view that the utility model is removed Fuel Cut Solenoid Valve.
Fig. 5 is high-pressure service pump single cylinder sectional drawing.
Embodiment
Further illustrate the utility model below in conjunction with drawings and Examples.
Embodiment shown in Fig. 3, Fig. 4, Fig. 5 as shown in Figure 1, Figure 2: in figure: 1-high-pressure service pump in upright arrangement, 1a-high-pressure service pump single cylinder, 1b-outlet valve, 1c-front end mounting flange, 1d-rear end fitting seat, 1e-cam of injection pump axle, 2-oil transfer pump, 3-speed regulator, 3a-shutdown handle, 3b-throttle control handle, 3c--supercharging compensate interface, 3d-switching handle, 4-Fuel Cut Solenoid Valve, 4a-push rod, the 1a1-single cylinder pump housing, 1a2 tappet body, 1b1-discharge outlet.
High-power engineering machinery Diesel Engine Mechanical formula fuel pump of the present utility model comprises high-pressure service pump 1 in upright arrangement, oil transfer pump 2, speed regulator 3, speed regulator 3 adopts RQV-K speed regulator, the flanged surface 1c that high-pressure service pump 1 front end setting in upright arrangement and engine gear case are fastening, rear end fitting seat 1d and bracket are fastening simultaneously; Gear of fuel pump is arranged on the camshaft 1e front end conical surface with locking nut; High-pressure service pump single cylinder plunger centre distance L=38mm, camshaft actuated end diameter D1=35mm～38mm, cam lift h=15mm, discharge outlet 1b1 inner diameter D 2=2.6mm.
Described speed regulator 3 is installed on high-pressure service pump in upright arrangement 1 rear end, and has supercharging compensate interface 3c, and switching handle 3d left end and the shutdown handle 3a of speed regulator 3 are fastening; Supercharging compensate interface 3c adopts flexible pipe to be connected with engine air inlet tube; Fuel Cut Solenoid Valve 4 is installed at speed regulator 3 tops, and the push rod 4a of Fuel Cut Solenoid Valve 4 lower ends is connected with the switching handle 3d right-hand member of speed regulator 3.
Described oil transfer pump 2 is integrated on high-pressure service pump 1 in upright arrangement, by the camshaft actuated of high-pressure service pump 1 in upright arrangement.
When engine running, the negative pressure that oil transfer pump 2 produces, sucks coarse filtration by fuel oil from long-range combustion filter, be transferred to essence filter by coarse filtration again, be delivered to high-pressure service pump 1 in upright arrangement by essence filter again, fuel oil is forced into high pressure under the to-and-fro motion of high-pressure service pump 1 plunger in upright arrangement, from outlet valve 1b, is delivered to oil sprayer.
The central shaft of speed regulator 3 and cam of injection pump axle connect firmly, and speed regulator 3 regulates the stroke of the control rack of high-pressure service pump 1 in upright arrangement according to the rotating speed of cam of injection pump axle.In the time that engine speed is higher, the compressed air pressure of pressurized machine output also raises, because supercharging compensate interface 3c and the gas handling system of speed regulator 3 are connected, therefore, high-pressure air can promote the diaphragm spring in speed regulator 3, and then the stroke of control rack to high-pressure service pump 1 in upright arrangement produces and regulates.
Driver connects the power supply of Fuel Cut Solenoid Valve 4 in the time driving, and makes Fuel Cut Solenoid Valve 4 switch on, and switching handle 3d is rotated in now push rod 4a rising, and switching handle 3d rotates shutdown handle 3a, and oil pump is in supplying oil condition.Otherwise, Fuel Cut Solenoid Valve 4 power-off, oil pump is fuel cut-off immediately.When vehicle operating, driver regulates the size of accelerator open degree by the rotation of Joystick 3b.
Claims (3)
1. a high-power engineering machinery Diesel Engine Mechanical formula fuel pump, comprise high-pressure service pump in upright arrangement (1), oil transfer pump (2), speed regulator (3), is characterized in that: speed regulator (3) adopts RQV-K speed regulator, the flanged surface (1c) that high-pressure service pump in upright arrangement (1) front end setting and engine gear case are fastening, high-pressure service pump single cylinder plunger centre distance L=38mm, camshaft actuated end diameter D1=35mm～38mm, cam lift h=15mm, discharge outlet (1b1) inner diameter D 2=2.6mm.
2. high-power engineering machinery Diesel Engine Mechanical formula fuel pump according to claim 1, it is characterized in that: speed regulator (3) is installed on high-pressure service pump in upright arrangement (1) rear end, and thering is supercharging compensate interface (3c), switching handle (3d) left end and the shutdown handle (3a) of speed regulator (3) are fastening; Supercharging compensate interface (3c) adopts flexible pipe to be connected with engine air inlet tube; Fuel Cut Solenoid Valve (4) is installed at speed regulator (3) top, and the push rod (4a) of Fuel Cut Solenoid Valve (4) lower end is connected with switching handle (3d) right-hand member of speed regulator (3).
3. high-power engineering machinery Diesel Engine Mechanical formula fuel pump according to claim 1 and 2, is characterized in that: it is upper that oil transfer pump (2) is integrated in high-pressure service pump in upright arrangement (1), by the camshaft actuated of high-pressure service pump in upright arrangement (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320731829.XU CN203627048U (en) | 2013-11-19 | 2013-11-19 | Mechanical fuel pump of high-power engineering machinery diesel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320731829.XU CN203627048U (en) | 2013-11-19 | 2013-11-19 | Mechanical fuel pump of high-power engineering machinery diesel engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203627048U true CN203627048U (en) | 2014-06-04 |
Family
ID=50813534
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320731829.XU Expired - Fee Related CN203627048U (en) | 2013-11-19 | 2013-11-19 | Mechanical fuel pump of high-power engineering machinery diesel engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203627048U (en) |
-
2013
- 2013-11-19 CN CN201320731829.XU patent/CN203627048U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102333950B (en) | High-pressure pump arrangement | |
| US10190553B2 (en) | Pumping unit for feeding fuel, preferably diesel fuel, from a storage tank to an internal combustion engine | |
| CN103089507B (en) | Double-row six-cylinder radial type common-rail oil feed pump | |
| CN102197211A (en) | High-pressure fuel pump for an internal combustion engine | |
| CN104791211A (en) | Electromagnetic variable cam mechanism and small-fluctuation variable-flow oil supply device | |
| CN110748446A (en) | Common rail high-pressure oil inlet and outlet valve assembly and common rail high-pressure oil supply pump | |
| CN2903453Y (en) | Constant pressure oil outlet valve of diesel engine oil injection pump | |
| CN104612962A (en) | Variable-displacement piston oil delivery pump and variable-flow low-pressure oil supplying device | |
| CN106523226B (en) | High-pressure common rail system of diesel engine | |
| CN203627048U (en) | Mechanical fuel pump of high-power engineering machinery diesel engine | |
| CN204591609U (en) | Electromagnetic type variable cam mechanism and little pulsation variable-flow oil supplying device | |
| RU2369767C1 (en) | High-pressure fuel pump | |
| CN202628350U (en) | Electric control single-cylinder fuel injection pump | |
| KR100937979B1 (en) | Fuel adjustment and filtering device for a high-pressure pump | |
| CN1664350A (en) | Electric control common-rail valve-nozzle injection system | |
| CN201747496U (en) | Electric control high pressure oil injecting pump for single-cylinder diesel engine | |
| CN109268180A (en) | A kind of diesel electric-controlled high-pressure common rail oil feed pump | |
| CN202108631U (en) | Rail pressure enhancing pump for high-pressure common rail system of high-power diesel engine | |
| CN203962260U (en) | Energy-saving injection pump of engine plunger | |
| CN201818411U (en) | Fuel injection pump | |
| CN2861534Y (en) | Plunger pump for jetting machine | |
| CN102734013A (en) | Gasoline supplying device for motorcycle | |
| CN105545549A (en) | Double-shaft balance single cylinder diesel engine with fuel delivery pump | |
| CN204716438U (en) | High-power high voltage common rail diesel engine rail pressure strengthens pump | |
| CN205297798U (en) | Take balanced single cylinder diesel of biax of petroleum pump |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140604 Termination date: 20161119 |