CN106948992B - A kind of automobile fuel injector performance test workbench - Google Patents
A kind of automobile fuel injector performance test workbench Download PDFInfo
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- CN106948992B CN106948992B CN201710371820.5A CN201710371820A CN106948992B CN 106948992 B CN106948992 B CN 106948992B CN 201710371820 A CN201710371820 A CN 201710371820A CN 106948992 B CN106948992 B CN 106948992B
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- oil
- bracket
- fuel injector
- connector
- monitor station
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M65/00—Testing fuel-injection apparatus, e.g. testing injection timing ; Cleaning of fuel-injection apparatus
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M65/00—Testing fuel-injection apparatus, e.g. testing injection timing ; Cleaning of fuel-injection apparatus
- F02M65/001—Measuring fuel delivery of a fuel injector
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
Invention describes a kind of automobile fuel injector performance test workbench to realize the Fast Installation of multiple fuel injectors, and remove, save the operating time of operator by pallet grippers and cam clamping device；In addition, it analyzes fuel injector injection dynamic process, theoretically to the structure of fuel injector, working principle is analyzed and has been studied, certain theoretical foundation is provided for the properties detection exploitation of electric-controlled fuel injector, and it is performance test bed with this to have built electronic control injection, to fuel injector flow characteristic, atomization quality, oil spout angle is detected, the clamping apparatus and oil piping system matched with its of atomizer are had devised simultaneously, the testing bench structure is simple, it is low in cost, 6 fuel injectors can be detected simultaneously, and there is very big flexibility, different types of fuel injector can all be detected.
Description
Technical field
The present invention relates to a kind of detection device of automobile injection system, especially a kind of automobile fuel injector performance test work
Platform belongs to electromechanical integration technology area.
Background technique
The formation of gasoline engine combustion mixture is the spatial characteristics problem of fuel oil, depending on the spraying of fuel oil, air inlet
The factors such as the close fit between road air motion.Gasoline engine electric-controlled fuel injector is by circuit subsystem, magnetic circuit subsystem, machinery
The complication system of motion subsystem and fluid motion subsystem composition, in many characteristics of fuel injector, spray characteristics are to pass
Important.Electric-controlled fuel injector is one of the core component in Electronic Injection System of Engine, and performance directly influences engine
Economy, dynamic property and emission performance.The performance of electric-controlled fuel injector is an important factor for determining electronic control, to directly affect
The accuracy of fuel control unit.
It is mostly at present so artificial detection mode for the detection of automobile injection system, this mode is due to testing staff
Quality is different, the defects of so as to cause deviation and unstable result is caused；In view of the importance of automobile injection system, and at present
For automobile injection system detection there are the problem of, the applicant pass through research and experiment, a kind of automobile fuel injector is provided
Performance test workbench analyzes fuel injector injection dynamic process, theoretically former to the structure of fuel injector, work
Reason is analyzed and has been studied, and provides certain theoretical foundation for the properties detection exploitation of electric-controlled fuel injector.And with this
It is performance test bed to have built electronic control injection, fuel injector flow characteristic, atomization quality, oil spout angle have been detected.It designs simultaneously
The clamping apparatus and oil piping system matched with its of atomizer are gone out.The testing bench structure is simple, low in cost, can be simultaneously
6 fuel injectors are detected, and there is very big flexibility, different types of fuel injector can all be detected.Test result is sentenced
The fixed analysis by stringent foundation detection data, deviation and unstable result caused by having prevented because of testing staff's quality difference etc.
Defect.
Summary of the invention
It is now current it is a primary object of the present invention to solve the problems, such as above-mentioned deficiency in the prior art, and provide
It is a kind of.
Technical solution of the present invention: a kind of automobile fuel injector performance test workbench, under it is supreme successively include: fixed bottom
Plate, monitor station lifter, detection pallet, bracket, bracket fixture, oil duct, cam clamping device, and detection oil piping system；Its
In, bracket installation base is symmetrically arranged on the fixed bottom plate；It is machined with centered on the bracket installation base axis logical
Hole I；The bottom end the through-hole I is machined with counterbore centered on its axis；The monitor station lifter includes: under monitor station lifter
Cabinet, monitor station lifter upper box, gear shaft, gear bar and lock screw；Wherein, the monitor station lifter nowel
Body is fixedly mounted on the fixed bottom plate；The gear shaft is fixedly mounted in the monitor station lifter lower box；It is described
Monitor station lifter upper box is mounted in the monitor station lifter lower box；The gear bar is fixedly mounted on the detection
The one side of platform lifter upper box；The gear bar is meshed with the gear shaft；The lock screw is mounted on the inspection
The side of scaffold tower lifter lower box；The detection pallet is fixedly mounted on the monitor station lifter of the monitor station lifter
Cabinet upper end；The detection pallet includes: bottom plate, disc oil duct, and measurement pan straddle device；Wherein, the bottom plate
It is fixedly mounted on the monitor station lifter upper box upper end；The disc oil duct is fixedly mounted on the bottom plate；It is described
Measurement pan straddle device is fixedly mounted on the fixed bottom plate, is equipped with graduated cylinder thereon；Wherein, the disc oil duct
The quantity of graduated cylinder installed in quantity and the measurement pan straddle device is consistent；The bracket passes through bracket installation base and institute
State fixed bed bolt connection；；The pedestal upper end is provided with oil duct mounting hole；The oil duct is arranged by the pedestal upper end
Oil duct mounting hole be fixedly mounted on the bracket；The cam clamping device is fixedly mounted on the oil duct；The support
Frame fixture is connected to the bottom end of the cam clamping device；The detection oil piping system includes: that oil supply loop and oil suction are returned
Road；Wherein, the oil supply loop includes: electric-spraying fuel pump, overflow valve, bi-bit bi-pass reversal valve valve and pressure regulator；Institute
Stating oil suction circuit includes: two-position four way change valve and oil suction cylinder；Wherein, the two-position four way change valve includes A, B, P, T tetra-
A connector；When the bi-bit bi-pass reversal valve valve of the oil supply loop is in connected state, the oil supply loop is in fuel feeding
State；The two-position four way change valve in the oil suction circuit is in the first working position；When the bi-bit bi-pass of the oil supply loop commutates
When valve valve is in close state, the oil supply loop is in fuel cut-off state；The two-position four way change valve in the oil suction circuit
In the second working position.
As a kind of preferred embodiment of the invention, the cam clamping device includes: upper bracket, lifting bracket, cam, with
And adjust screw；Wherein, the center for adjusting screw and being fixedly mounted on the upper bracket；The cam is fixedly mounted on
The center of the oil duct；The cam and the central axis for adjusting screw are on a line；The lifting bracket
One end is fixedly mounted on the upper bracket by screw；Its lower end is connected to the bracket fixture；In the pallet grippers
It is even to be provided with fuel injector installing blind；The blind via bottom is provided with positioning convex platform；It is set centered on the positioning convex platform axis
It is equipped with through-hole II；Lifting bracket mounting hole is also symmetrically arranged in the pallet grippers；Part on the lifting bracket mounting hole
For round hole, its underpart is bellmouth.
As a kind of preferred embodiment of the invention, when the two-position four way change valve in the oil suction circuit is in the first working position
When, the A connector of the two-position four way change valve is connected with the P connector；B connector is connected with the T connector；Its
In, the A connector is connected to the oil duct；The P connector is connected to the upper cavity of the oil suction cylinder；The T connector
It is connected to the lower chamber of the oil suction cylinder；The external overflow valve of B connector.
As a kind of preferred embodiment of the invention, when the two-position four way change valve in the oil suction circuit is in the second working position
When, the A connector of the two-position four way change valve is connected with the T connector；B connector is connected with the P connector；Its
In, the A connector is connected to the oil duct；The P connector is connected to the upper cavity of the oil suction cylinder；The T connector
It is connected to the lower chamber of the oil suction cylinder；The external overflow valve of B connector.
As a kind of preferred embodiment of the invention, the lifting bracket mounting hole top is divided into round hole, its underpart
It is divided into bellmouth；The lower end of the lifting bracket is provided with tapered end；Wherein, the diameter of the round hole and the lifting bracket
Cylindrical end diameter it is consistent；The bottom diameter of the bellmouth is greater than the diameter of the round hole；The diameter of the tapered end
Greater than the diameter of the lifting bracket cylindrical end.
As a kind of preferred embodiment of the invention, the oil duct is hollow square pipe, and both ends are cylindrical body, and its
Both ends are provided with location dimples；The downside of the oil duct has been evenly arranged fuel injector connector.
As a kind of preferred embodiment of the invention, the top of the bracket is machined with positioning blind hole centered on axis；
The upper and lower ends of positioning blind hole are equipped with little spring, and positioning bead.
As a kind of preferred embodiment of the invention, the medial surface of the bracket is equipped with height gauge.
As a kind of preferred embodiment of the invention, the lifting bracket upper and lower ends are connected to the upper bracket, with
And the pallet grippers；The oil duct is passed through among it；In the oil duct and the tray clamps in the lifting bracket
The position of tool is equipped with big spring.
Compared with the existing technology, the invention has the following advantages: a kind of automobile fuel injector performance provided by the invention
Test table realizes the Fast Installation of multiple fuel injectors by setting pallet grippers and cam clamping device, with
And remove, save the operating time of operator；In addition, it analyzes fuel injector injection dynamic process, from theory
On structure, the working principle of fuel injector are analyzed and have been studied, for electric-controlled fuel injector properties detection exploitation provide
Certain theoretical foundation.And it is performance test bed with this to have built electronic control injection, to fuel injector flow characteristic, atomization quality, spray
Oily angle is detected.The clamping apparatus and oil piping system matched with its of atomizer are had devised simultaneously.The testboard knot
Structure is simple, low in cost, can detect 6 fuel injectors simultaneously, and have very big flexibility, all may be used to different types of fuel injector
It is detected.To the judgement of test result by the stringent analysis according to detection data, prevent because of testing staff's quality difference institute
The defects of caused deviation and unstable result.
Detailed description of the invention
Fig. 1 provides a kind of overall structure diagram of automobile fuel injector performance test workbench for the present invention
Fig. 2 provides monitor station lifter, and the scheme of installation of detection pallet for the present invention.
Fig. 3 provides the scheme of installation of bracket and oil duct for the present invention.
Fig. 4 provides the mounting structure schematic diagram of cam clamping device for the present invention.
Fig. 5 provides the oil circuit connection schematic diagram of detection oil piping system for the present invention.
In figure, 1-fixed bottom plate, 110-bracket installation bases, 120-through-hole I, 130-counterbores, the lifting of 2-monitor stations
Device, 210-monitor station lifter lower boxes, 220-monitor station lifter upper boxes, 230-gear shafts, 240-gear bars,
250-lock screws, 3-detection pallets, 310-bottom plates, 320-disc oil ducts, 330-measurement pan straddle devices,
331-graduated cylinders, 4-brackets, 410-oil duct mounting holes, 420-positioning blind holes, 421-little springs, 422-positioning beads,
430-height gauges, 5-bracket fixtures, 510-fuel injector installing blinds, 520-positioning convex platforms, 530-through-hole II, 540-mention
Liter rack mounting apertures, 541-round holes, 542-bellmouths, 6-oil ducts, 610-location dimples, 620-fuel injector connectors,
7-cam clamping devices, 710-upper brackets, 720-lifting brackets, 721-tapered ends, 722-big springs, 730-cams,
740-adjusting screws, 8-detection oil piping systems, 810-oil supply loops, 811-electric-spraying fuel pumps, 812-overflow valves, 813-
Bi-bit bi-pass reversal valve, 814-pressure regulators, 820-oil suction circuits, 821-two-position four way change valves, 822-oil suction cylinders.
Specific embodiment
Present invention will be further explained below with reference to the attached drawings and specific embodiments.
As Figure 1-Figure 5, Fig. 1 provides a kind of overall structure of automobile fuel injector performance test workbench for the present invention
Schematic diagram；Fig. 2 provides monitor station lifter, and the scheme of installation of detection pallet for the present invention；Fig. 3 provides branch for the present invention
The scheme of installation of frame and oil duct；Fig. 4 provides the mounting structure schematic diagram of cam clamping device for the present invention；Fig. 5 is this hair
It is bright that the oil circuit connection schematic diagram of detection oil piping system is provided.
Specifically, the present embodiment provides a kind of automobile fuel injector performance test workbench, under it is supreme successively include: fixation
Bottom plate 1, monitor station lifter 2, detection pallet 3, bracket 4, bracket fixture 5, oil duct 6, cam clamping device 7, and detection oil
Road system 8；Wherein, bracket installation base 110 is symmetrically arranged on the fixed bottom plate 1；With 110 axis of bracket installation base
Through-hole I120 is machined with centered on line；The bottom end the through-hole I120 is machined with counterbore 130 centered on its axis；The monitor station
Lifter 2 includes: monitor station lifter lower box 210, monitor station lifter upper box 220, gear shaft 230, gear bar 240,
And lock screw 250；Wherein, the monitor station lifter lower box 210 is fixedly mounted on the fixed bottom plate 1；It is described
Gear shaft 230 is fixedly mounted in the monitor station lifter lower box 210；The monitor station lifter upper box 220 is installed
In the monitor station lifter lower box 210；The gear bar 240 is fixedly mounted on the monitor station lifter upper box
220 one side；The gear bar 240 is meshed with the gear shaft 230；The lock screw 250 is mounted on the detection
The side of platform lifter lower box 210；The detection pallet 3 is fixedly mounted on the monitor station lifting of the monitor station lifter 2
220 upper end of device upper box；The detection pallet 3 includes: bottom plate 310, disc oil duct 320, and measurement pan straddle device
330；Wherein, the bottom plate 310 is fixedly mounted on 220 upper end of monitor station lifter upper box；The disc oil duct 320
It is fixedly mounted on the bottom plate 310；The measurement pan straddle device 330 is fixedly mounted on the fixed bottom plate 1, thereon
Graduated cylinder 331 is installed；Wherein, the quantity of the disc oil duct 320 and the amount for measuring and being installed on pan straddle device 330
The quantity of cylinder 331 is consistent；The bracket 4 is bolted by bracket installation base 110 with the fixed bottom plate 1；；The bracket
4 upper ends are provided with oil duct mounting hole 410；The oil duct 6 passes through the fixed peace of oil duct mounting hole 410 that 4 upper end of bracket is arranged
On the bracket 4；The cam clamping device 7 is fixedly mounted on the oil duct 6；The bracket fixture 5 is connected to institute
State the bottom end of cam clamping device 7；The detection oil piping system 8 includes: oil supply loop 810 and oil suction circuit 820；It is described
Oil supply loop 810 includes: electric-spraying fuel pump 811, overflow valve 812, bi-bit bi-pass reversal valve valve 813 and pressure regulator
814；The oil suction circuit 820 includes: two-position four way change valve 821 and oil suction cylinder 822；Wherein, the two-position four-way commutation
Valve 821 includes tetra- connectors of A, B, P, T；When the bi-bit bi-pass reversal valve valve 813 of the oil supply loop 810 is in connected state
When, the oil supply loop 810 is in oil condition；The two-position four way change valve 821 in the oil suction circuit 820 is in the first work
Position；When the bi-bit bi-pass reversal valve valve 813 of the oil supply loop 810 is in close state, the oil supply loop 810, which is in, to stop
Only oil condition；The two-position four way change valve 821 in the oil suction circuit 820 is in the second working position.
As a kind of preferred embodiment of the present embodiment, the cam clamping device 7 includes: upper bracket 710, lifting bracket
720, cam 730, and adjust screw 740；Wherein, the center for adjusting screw 740 and being fixedly mounted on the upper bracket 710
Position；The cam 730 is fixedly mounted on the center of the oil duct 6；The cam 730 and the adjusting screw 740
Central axis is on a line；Described 720 one end of lifting bracket is fixedly mounted on the upper bracket 710 by screw；Its
Lower end is connected to the bracket fixture 5；Fuel injector installing blind 510 is evenly arranged in the pallet grippers 5；The blind hole
510 bottoms are provided with positioning convex platform 520；Through-hole II530 is provided with centered on 520 axis of positioning convex platform；The pallet
Lifting bracket mounting hole 540 is also symmetrically arranged on fixture 5；540 top of lifting bracket mounting hole is divided into round hole 541,
Its underpart is bellmouth 542.
As a kind of preferred embodiment of the present embodiment, when the two-position four way change valve 821 in the oil suction circuit 820 is in the
When one working position, the A connector of the two-position four way change valve 821 is connected with the P connector；B connector is connect with the T
Mouth conducting；Wherein, the A connector is connected to the oil duct 6；The P connector is connected to the epicoele of the oil suction cylinder 822
Body；The T connector is connected to the lower chamber of the oil suction cylinder 822；The external overflow valve of B connector；When the oil suction
When the two-position four way change valve 821 in circuit 820 is in the second working position, the A connector of the two-position four way change valve 821 and institute
State the conducting of T connector；B connector is connected with the P connector；Wherein, the A connector is connected to the oil duct 6；The P
Connector is connected to the upper cavity of the oil suction cylinder 822；The T connector is connected to the lower chamber of the oil suction cylinder 822；It is described
The external overflow valve of B connector.
As a kind of preferred embodiment of the present embodiment, 540 top of lifting bracket mounting hole is divided into round hole
541, its underpart is bellmouth 542；The lower end of the lifting bracket 720 is provided with tapered end 721；Wherein, the round hole
541 diameter is consistent with the cylindrical end diameter of the lifting bracket 720；The bottom diameter of the bellmouth 542 is greater than described
The diameter of round hole 541；The diameter of the tapered end 721 is greater than the diameter of 720 cylindrical end of lifting bracket.
As a kind of preferred embodiment of the present embodiment, the oil duct 6 is hollow square pipe, and both ends are cylindrical body,
And its both ends is provided with location dimples 610；The downside of the oil duct 6 has been evenly arranged fuel injector connector 620.
As a kind of preferred embodiment of the present embodiment, the top of the bracket 4 is machined with centered on axis to be positioned with blind
Hole 420；The positioning is equipped with little spring 421, and positioning bead 422 with the upper and lower ends of blind hole 420.
As a kind of preferred embodiment of the present embodiment, the medial surface of the bracket 4 is equipped with height gauge 430.
As a kind of preferred embodiment of the present embodiment, 720 upper and lower ends of lifting bracket are connected to the upper branch
Frame 710 and the pallet grippers 5；The oil duct 6 is passed through among it；In the lifting bracket 720 in the oil duct 6 with
The position of the pallet grippers 5 is equipped with big spring 722.
Specifically, a kind of automobile fuel injector performance test workbench provided in this embodiment, is broadly divided into two parts: spray
Oily device clamping part and performance detection part；Wherein, for clamping part, for the purpose for realizing quick-clamping, the dress of fuel injector
Folder portion point is the intermediate portions of mechanism.Monitor station can detect 6 fuel injectors simultaneously, be added by the rotation forces fixture of cam 730
There is self-locking device can rotate special angle for tight atomizer, cam 730, guarantee fixture reliable operation.And adjustable adjusting
Screw 740 changes the clamping distance between fixture to adapt to different types of fuel injector, expands the test scope of testboard.Entirely
Fixture can be rotated with oil duct, and cooperation oil piping system completes oil-absorbing process.Detection device is by equal part fan-shaped disc, plexiglass tent
It can not fill and be formed with fuel injector etc..The border circular areas that equal part circle catch tray is evenly distributed by 5 pieces forms.Each circle has
One aperture is connected with connecting tube, by graduated cylinder 331 collect oil mass number.Moving up and down for supporting plate is controlled by elevating mechanism.
Change detection platform at a distance from fuel injector, adapts to different fuel injectors.Leftmost support mounting height ruler 430, convenient for detection oil spout
Device is at a distance from detection platform.
In addition, it is worth noting that, the oil duct 6 can rotate, and symmetrical above and below two are provided in the rotary shaft at both ends
A location dimples 610 push positioning bead 422 to reach positioning action by little spring 421.Because anchor point be fixture vertically downward
Straight up, in the process not by External force interference, so mechanism can reach predetermined purpose.Upon completion of the assays, folder is pulled
Tool system rotates 180 °, and the purpose of fuel injector fuel flow returns is completed under the cooperation of detection oil piping system 8, prevents from spraying in disassembly
Fuel oil is caused to leak during oily device；Specifically, the i.e. described oil feeding line for detection system in addition to that can provide the vapour of steady pressure
It is oily outer, also the gasoline in fuel injector can be sucked back into oil duct upon completion of the assays, when changing part test, avoid the wave that leaks of fuel oil
Take.To realize this function, it is especially added with oil suction cylinder 822.When fuel feeding, the solenoid valve of two-position four way change valve 821 is disconnected, described
Two-position four way change valve 821 is in the first working position, and because the presence of charge oil pressure will be such that piston in oil suction cylinder moves down, spring is drawn
It is long, store energy.After the completion of detection, because stopping to oil duct fuel feeding, pressure decline, two-position four way change valve 821 is powered, by oil suction
Oil duct is accessed in 822 lower end of cylinder, and spring releases energy, thus by the cavity of resorption of the fuel oil sucking oil suction cylinder 822 in oil duct, to reach
Purpose.
It should be noted that above embodiments are only to illustrate technical solution of the present invention rather than restriction technologies scheme, although
The invention is described in detail with reference to the preferred embodiments by applicant, those skilled in the art should understand that, those are right
The modification or equivalent replacement that technical solution of the present invention carries out, cannot be detached from the objective and range of the technical program, should all cover
In scope of the invention as claimed.
Claims (9)
1. a kind of automobile fuel injector performance test workbench, which is characterized in that supreme under it successively includes: fixed bottom plate (1), inspection
Scaffold tower lifter (2), detection pallet (3), bracket (4), bracket fixture (5), oil duct (6), cam clamping device (7), Yi Jijian
It surveys oil piping system (8)；Wherein, bracket installation base (110) are symmetrically arranged on the fixed bottom plate (1)；With bracket peace
Through-hole I(120 is machined with centered on dress boss (110) axis)；The through-hole I(120) bottom end is machined with centered on its axis
Counterbore (130)；The monitor station lifter (2) includes: monitor station lifter lower box (210), monitor station lifter upper box
(220), gear shaft (230), gear bar (240) and lock screw (250)；Wherein, the monitor station lifter lower box
(210) it is fixedly mounted on the fixed bottom plate (1)；The gear shaft (230) is fixedly mounted under the monitor station lifter
In cabinet (210)；The monitor station lifter upper box (220) is mounted in the monitor station lifter lower box (210)；Institute
State the one side that gear bar (240) is fixedly mounted on the monitor station lifter upper box (220)；The gear bar (240) with
The gear shaft (230) is meshed；The lock screw (250) is mounted on the one of the monitor station lifter lower box (210)
Side；Detection pallet (3) is fixedly mounted on monitor station lifter upper box (220) upper end of the monitor station lifter (2)；
The detection pallet (3) includes: bottom plate (310), disc oil duct (320), and measurement pan straddle device (330)；Wherein,
The bottom plate (310) is fixedly mounted on monitor station lifter upper box (220) upper end；The disc oil duct (320) is solid
Dingan County is on the bottom plate (310)；The measurement pan straddle device (330) is fixedly mounted on the fixed bottom plate (1),
Graduated cylinder (331) are installed thereon；Wherein, the quantity of the disc oil duct (320) and the measurement pan straddle device (330)
The quantity of the graduated cylinder (331) of upper installation is consistent；The bracket (4) passes through bracket installation base (110) and the fixed bottom plate (1)
It is bolted；Bracket (4) upper end is provided with oil duct mounting hole (410)；The oil duct (6) passes through the bracket (4) upper end
The oil duct mounting hole (410) of setting is fixedly mounted on the bracket (4)；The cam clamping device (7) is fixedly mounted on institute
It states on oil duct (6)；The bracket fixture (5) is connected to the bottom end of the cam clamping device (7)；The detection oil piping system
It (8) include: oil supply loop (810) and oil suction circuit (820)；The oil supply loop (810) includes: electric-spraying fuel pump
(811), overflow valve (812), bi-bit bi-pass reversal valve (813) and pressure regulator (814)；Oil suction circuit (820) packet
It includes: two-position four way change valve (821) and oil suction cylinder (822)；Wherein, the two-position four way change valve (821) include A, B, P,
Tetra- connectors of T；When the bi-bit bi-pass reversal valve (813) of the oil supply loop (810) is in connected state, the fuel feeding is returned
Road (810) is in oil condition；The two-position four way change valve (821) of the oil suction circuit (820) is in the first working position；Work as institute
When stating the bi-bit bi-pass reversal valve (813) of oil supply loop (810) and being in close state, the oil supply loop (810), which is in, to stop
Oil condition；The two-position four way change valve (821) of the oil suction circuit (820) is in the second working position.
2. a kind of automobile fuel injector performance test workbench according to claim 1, which is characterized in that the cam clamps
Device (7) includes: upper bracket (710), lifting bracket (720), cam (730), and adjusts screw (740)；Wherein, the tune
Section screw (740) is fixedly mounted on the center of the upper bracket (710)；The cam (730) is fixedly mounted on the oil
The center in road (6)；The cam (730) and the central axis for adjusting screw (740) are on a line；It is described to mention
Ascending branch frame (720) one end is fixedly mounted on the upper bracket (710) by screw；Its lower end is connected to the bracket fixture
(5)；Fuel injector installing blind (510) are evenly arranged on the pallet grippers (5)；Blind hole (510) bottom is provided with fixed
Position boss (520)；Through-hole II(530 is provided with centered on the positioning convex platform (520) axis)；On the pallet grippers (5)
Also it is symmetrically arranged with lifting bracket mounting hole (540)；Lifting bracket mounting hole (540) top is divided into round hole (541),
Lower part is divided into bellmouth (542).
3. a kind of automobile fuel injector performance test workbench according to claim 1, which is characterized in that when the oil suction is returned
When the two-position four way change valve (821) on road (820) is in the first working position, the A connector of the two-position four way change valve (821)
It is connected with the P connector；B connector is connected with the T connector；Wherein, the A connector is connected to the oil duct (6)；
The P connector is connected to the upper cavity of the oil suction cylinder (822)；The T connector is connected under the oil suction cylinder (822)
Cavity；The external overflow valve of B connector.
4. a kind of automobile fuel injector performance test workbench according to claim 1, which is characterized in that when the oil suction is returned
When the two-position four way change valve (821) on road (820) is in the second working position, the A connector of the two-position four way change valve (821)
It is connected with the T connector；B connector is connected with the P connector；Wherein, the A connector is connected to the oil duct (6)；
The P connector is connected to the upper cavity of the oil suction cylinder (822)；The T connector is connected under the oil suction cylinder (822)
Cavity；The external overflow valve of B connector.
5. a kind of automobile fuel injector performance test workbench according to claim 2, which is characterized in that the promotion
Rack mounting apertures (540) top is divided into round hole (541), and its underpart is bellmouth (542)；The lifting bracket (720)
Lower end is provided with tapered end (721)；Wherein, the cylindrical end of the diameter of the round hole (541) and the lifting bracket (720)
Diameter is consistent；The bottom diameter of the bellmouth (542) is greater than the diameter of the round hole (541)；The tapered end (721)
Diameter is greater than the diameter of the lifting bracket (720) cylindrical end.
6. a kind of automobile fuel injector performance test workbench according to claim 1, which is characterized in that the oil duct (6)
For hollow square pipe, both ends are cylindrical body, and its both ends is provided with location dimples (610)；The downside of the oil duct (6)
Face has been evenly arranged fuel injector connector (620).
7. a kind of automobile fuel injector performance test workbench according to claim 1, which is characterized in that the bracket (4)
Top positioning blind hole (420) are machined with centered on axis；The positioning is equipped with small with the upper and lower ends of blind hole (420)
Spring (421), and positioning bead (422).
8. a kind of automobile fuel injector performance test workbench according to claim 1, which is characterized in that the bracket (4)
Medial surface height gauge (430) are installed.
9. a kind of automobile fuel injector performance test workbench according to claim 2, which is characterized in that the lifting bracket
(720) upper and lower ends are connected to the upper bracket (710) and the pallet grippers (5)；The oil duct is passed through among it
(6)；Position in the oil duct (6) and the pallet grippers (5) in the lifting bracket (720) is equipped with big spring
(722).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710371820.5A CN106948992B (en) | 2017-05-24 | 2017-05-24 | A kind of automobile fuel injector performance test workbench |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710371820.5A CN106948992B (en) | 2017-05-24 | 2017-05-24 | A kind of automobile fuel injector performance test workbench |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106948992A CN106948992A (en) | 2017-07-14 |
| CN106948992B true CN106948992B (en) | 2018-12-07 |
Family
ID=59480243
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710371820.5A Expired - Fee Related CN106948992B (en) | 2017-05-24 | 2017-05-24 | A kind of automobile fuel injector performance test workbench |
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| Country | Link |
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| CN (1) | CN106948992B (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2275166Y (en) * | 1996-08-29 | 1998-02-25 | 北京铁路局 | Test table for oil injector |
| DE10115924A1 (en) * | 2001-03-30 | 2002-10-24 | Bosch Gmbh Robert | Test bench for determining pressures on pressurized components |
| CN2804417Y (en) * | 2005-05-23 | 2006-08-09 | 中国南方航空动力机械公司 | Nozzle flow tester |
| US7878052B2 (en) * | 2008-07-31 | 2011-02-01 | Perkins Engines Company Limited | High pressure cavitation system |
| CN102996312B (en) * | 2012-12-25 | 2015-07-01 | 天台县唐宋汽车修配厂 | Automatic clamping device of common rail oil atomizer detection device |
-
2017
- 2017-05-24 CN CN201710371820.5A patent/CN106948992B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN106948992A (en) | 2017-07-14 |
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Granted publication date: 20181207 Termination date: 20190524 |