CN102398247B - Tool for detaching engine injector - Google Patents
Tool for detaching engine injector Download PDFInfo
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- CN102398247B CN102398247B CN201010280248.XA CN201010280248A CN102398247B CN 102398247 B CN102398247 B CN 102398247B CN 201010280248 A CN201010280248 A CN 201010280248A CN 102398247 B CN102398247 B CN 102398247B
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- sleeve
- screw rod
- fuel injector
- card hand
- tool
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- 230000007246 mechanism Effects 0.000 claims abstract description 50
- 239000000446 fuel Substances 0.000 claims description 88
- 230000002093 peripheral effect Effects 0.000 claims description 6
- 239000011521 glass Substances 0.000 claims description 2
- 230000006378 damage Effects 0.000 abstract description 9
- 239000003921 oil Substances 0.000 description 6
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- 239000005864 Sulphur Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910052748 manganese Inorganic materials 0.000 description 2
- 239000011572 manganese Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 230000003872 anastomosis Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000007799 cork Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- Fuel-Injection Apparatus (AREA)
Abstract
The invention relates to a special tool for detaching an engine injector from an engine. The tool comprises a support mechanism for supporting on the cylinder wall around the injector; the support mechanism is connected with a drawing mechanism for drawing the injector; the lower end of the support mechanism is tubular, and the pipe diameter is fitted with the outer diameter of the injector; the lower end face of the support mechanism is vertical to the axis of the pipe; the drawing mechanism comprises at least two clamps positioned inside the support mechanism; the lower ends of the clamps are provided with oppositely extending flanges; the edge thickness of the flanges corresponds to the axial dimension of the neck of the injector; and the drawing mechanism comprises a clutch mechanism for separating and gathering the lower ends of the clamps. The lower end of the support mechanism is tubular, so pressure points of the support mechanism for supporting the whole tool are obviously increased, and the whole tool can be stably supported on the cylinder wall around the injector to pull out the injector; therefore, the special tool is convenient to use, and can easily pull out the injector and avoid the damage of the injector.
Description
Technical field
The specific purpose tool that the present invention relates to engine fuel injector to disassemble from engine.
Background technology
The fuel injector of direct spray petrol engine in cylinder is arranged on petrolic casing wall, fuel injector is piston-shaped, fuel injector directly inserts in the mounting hole of oil sprayer on cylinder wall, makes the nozzle of fuel injector front end be positioned at inner chamber of cylinder block, and during work, fuel injector is mapped to the work done of cylinder body internal combustion by gasoline spraying.Because alkene, sulphur and manganese content in fuel oil are higher, after the use of engine long time, gap on casing wall between mounting hole of oil sprayer and fuel injector can deposit a large amount of carbon, sulphur, manganese mixture, and can be in conjunction with also further fastening adhesion under the hot environment of deposit in cylinder, these deposits are by the relative motion hindering between fuel injector and cylinder wall, and the resistance that fuel injector is disassembled from engine is very large.And the portion size that fuel injector is positioned at outside cylinder wall is shorter, conventionally in 30mm; This position has the neck arranging along circumferentially, this neck is exactly along the draw-in groove circumferentially arranging or step-like reducing position, compared with neck, more by the position in casing wall outside, be also provided with plug connector or the inlet connector of arranging holding wire, that is to say that part-structure complexity and size that fuel injector is exposed at outside cylinder wall are less.When needs are dismantled fuel injector and are cleaned, keep in repair or change, if clamp fuel injector with existing pliers, bring in and dismantle outward, often can cause fuel injector to damage, bring waste and loss.
And if while utilizing the instrument dismounting fuel injector of the similar structures such as existing drawbench, due to fuel injector cylinder wall out-of-flatness around, so the several symmetrically arranged supporting leg of drawbench cannot be supported on cylinder wall reposefully; Or the supporting leg of drawbench is supported on cylinder wall limpingly, but being all point, supporting leg is supported on contiguously on cylinder wall, in the process of drawing fuel injector, supporting leg must easily slide and use inconvenient; Or for supporting leg symmetry is stably supported on fuel injector cylinder wall around, and cause the axis of movement of drawing can not be concentric with the axle core of fuel injector and mounting hole of oil sprayer, increased like this when fuel injector is extracted and the local friction of installing hole, be easy to make fuel injector concentrated wear and destruction in being pulled out process.
Summary of the invention
The object of the present invention is to provide a kind of extracting tool of special use, such extracting tool is easy to use and fuel injector can be disassembled from engine in good condition.
For solving above-described technical problem, the technical scheme that the present invention takes is: a kind of tool for detaching engine injector, comprise for being supported on the supporting mechanism on fuel injector cylinder wall around, on supporting mechanism, connect the drawing mechanism for drawing fuel injector, described supporting mechanism lower end is tubulose, the external diameter of its caliber and fuel injector coincide, its lower surface is vertical with tubular axis line, described drawing mechanism comprises at least two card hands, card hand is positioned at supporting mechanism inside, the lower end of card hand has the flange extending in opposite directions, the edge thickness of flange is corresponding with the axial dimension of fuel injector neck, described drawing mechanism comprises is separated from each other and the clutch closing up card hand lower end.
As seen from the above technical solution: first drawing mechanism and clutch are adjusted to relaxed state, then card hand can be stretched out the neck that then clamps fuel injector from the lower end of supporting mechanism, then supporting mechanism lower end is supported on around fuel injector, make the kinematic axis core of card hand drawing fuel injector and the axle core of fuel injector and mounting hole of oil sprayer be positioned at same straight line, then handle drawing mechanism and fuel injector can be extracted.The supporting mechanism of special-purpose instrument is like this because lower end is tubulose, so its stress point that can be used for supporting whole instrument significantly increases, even in the situation that fuel injector cylinder wall is around smooth not, this supporting mechanism also can use fuel injector cylinder wall around and support reposefully whole instrument and extract fuel injector, there will not be the drawbench of supporting leg type several along the symmetrical strong point of fuel injector axle core because finding, and the situation that cannot extract fuel injector.Such specific purpose tool is easy to use, fuel injector can be extracted easily, and because supporting & stablizing, stir steadily and also just avoided the damage of fuel injector, saved cost, has avoided the pollution of the fuel injector after damage to environment.
Accompanying drawing explanation
Fig. 1 is the structural representation of one embodiment of the present invention;
Fig. 2 is the structural representation of the preferred embodiment of the present invention;
Fig. 3 is the rearview of Fig. 2;
Fig. 4 is the right view of the sleeve shown in Fig. 3;
Fig. 5 is the stereogram of a card hand;
Fig. 6 is the assembling schematic diagram of connecting pin and screw rod, nut, card hand.
The specific embodiment
Contrast accompanying drawing 1 to 6 specific descriptions below preferred embodiment, the extracting tool of engine fuel injector, comprise for being supported on supporting mechanism and the drawing mechanism on fuel injector cylinder wall around, supporting mechanism lower end is necessary for tubulose, its caliber equals or is slightly larger than the external diameter of fuel injector, as long as guarantee that the lower end tubular portion of supporting mechanism can entangle fuel injector, visible this tubulose is circular tube shaped preferably, can coincide with fuel injector profile as far as possible, and saving material usage, as long as can being square supporting leg, its top supports drawing mechanism or other any structure that can support drawing mechanism, the sleeve 20 that best whole supporting mechanism is exactly a circular tube shaped, can meet the effect of supporting drawing mechanism like this, and processing is simultaneously convenient again.The lower surface of this sleeve 20 is vertical with tubular axis line simultaneously, and the lower end mouth of pipe of sleeve 20 can be supported on fuel injector cylinder wall around like this.Described drawing mechanism comprises at least two card hands 10, card hand 10 is positioned at sleeve 20 inside, inner as long as the lower end of the card hand 10 directly coordinating with fuel injector clamping is positioned at the lower end of sleeve 20 strictly speaking, the concrete shape of card hand 10 is not strict with, can be the groove type identical with sleeve 20 inner chambers, also can be exactly cylinder or four prism type, its lower end has the flange 11 extending in opposite directions, the edge thickness of flange 11 is corresponding with the axial dimension of fuel injector neck, the longitudinal section that is to say card hand 10 is " L " shape, lower end kink that should " L " shape namely the gauge of flange 11 namely at sleeve 20, the size on is axially less than or equal to the size that fuel injector is revealed in the neck of cylinder wall outside and coincide, on drawing mechanism, also comprise card hand 10 lower ends are separated from each other and the clutch closing up, clutch can be the extension spring between card hand 10 that is arranged on shown in Fig. 1, the radial peg that can be exactly also the shell dismounting shown in Fig. 2 connects.Power section as for drawing mechanism can be the lever construction that is fixed in sleeve 20 upper ends shown in Fig. 1, the lever outer end of lifting topmost as shown in Figure 1 card hand 10 moves down and stretches out sleeve 20 lower ends and can clamp fuel injector neck, then sleeve 20 moves down and supports to fuel injector cylinder wall around, depress the lever outer end of topmost, fuel injector can be extracted, or the power section of drawing mechanism is the oil/gas cylinder in end sleeve 20 upper ends along sleeve 20 axial distribution just, the compression of oil/gas cylinder and effect stroke stretch out sleeve 20 clip fuel injectors and card hand 10 rising drawing fuel injectors with regard to corresponding card hand 10 like this.Apparent, the card hand 10 of two or more numbers is at supporting mechanism, namely sleeve 20 inside are that decentralized photo is arranged, preferably along sleeve 20 axle cores, arrange symmetrically, the clamping fuel injector that card hand 10 can be symmetrically like this, and card hand 10 drawings also overlap the axis of movement of fuel injector with the axle core of fuel injector and the axle core of sleeve 20, fuel injector can be extracted more reposefully, avoids fuel injector local excessive and cause damage with installing hole friction.
Lower end due to supporting mechanism in special-purpose instrument is like this tubulose, so its stress point that can be used for supporting whole instrument significantly increases, even in the situation that fuel injector cylinder wall is around smooth not, this supporting mechanism also can use fuel injector cylinder wall around and support reposefully rigidly whole instrument, then the card hand of drawing mechanism can be extracted fuel injector reposefully, there will not be the supporting leg of several symmetries of instrument to find several along the symmetrical strong point of fuel injector axle core, and the situation that cannot extract fuel injector; Also avoided the situation of the supporting leg slip of instrument.Such specific purpose tool is easy to use, fuel injector can be extracted easily, and because supporting & stablizing, and can stir reposefully fuel injector along fuel injector axle core, so just avoided the damage of fuel injector, saved cost, avoided the pollution of the fuel injector after damage to environment.
As shown in Fig. 2 to 6, described drawing mechanism comprises screw rod 30, screw rod 30 inserts in sleeve 20, screw rod 30 lower ends and card hand 10 by connecting pin 40 be radially connected to can together with the state that moves up and down along sleeve 20 inner chambers, screw rod 30 tops are positioned at sheathed handle 50 on the shaft of sleeve 20 outsides, the internal thread that the endoporus setting of handle 50 and the external screw thread on screw rod 30 are identical, described screw rod 30 upper ends are greater than the length of sleeve 20 to the distance of card hand 10 lower ends.Screw rod 30 can drive card hand 10 to stretch out sleeve 20 lower ends so, is convenient to card hand 10 clamping fuel injectors, utilizes handle 50 to be resisted against sleeve 20 upper ends and selects dress handle 50 will in screw rod 30 and card hand 10, draw and fuel injector is extracted.Preferably the internal diameter on sleeve 20 tops and the radial dimension of screw rod 30 are identical, bottom internal diameter is identical with the outer radial dimension being connected after card hand 10 of nut 60, and namely the endoporus of sleeve 20 is shoulder hole, and Xi, bottom, top is thick.The upper end of sleeve 20 outer surfaces can also arrange the head 23 of being convenient to gripping, and head 23 profiles are the tubulose coaxially arranged with the stack shell of sleeve 20, and the external diameter that is exactly mainly head 23 grips compared with being slightly convenient to user; Such sleeve 20 also can regard that sleeve 20 is for inside and outside ladder pipe as, and sleeve 20 profiles are ladder tubulose in other words, and interior shape is also ladder tubulose, and outside for up big and down small, endoporus be lower large little.Rotary friction pad 24 is preferably installed in sleeve 20 upper surfaces, the rotation friction in the time of can reducing like this handle 50 and be resisted against sleeve 20 upper surface.
Further can also on the outer peripheral face of head 23, be processed with concaveconvex structure by annular knurl, described handle 50 is glass holder shape, and handle 50 is coaxially arranged with screw rod 30, and its bottom surface is towards sleeve 20, and the outer peripheral face annular knurl of handle 50 is processed with concaveconvex structure.And handle installing hole 51 can also be offered perpendicular to the direction of screw rod 30 in edge on handle 50, when fuel injector is combined closely with cylinder wall, can, at the interior insertion lever of handle installing hole 51, utilize the principle of lever force-saving to dismantle like a cork fuel injector like this; Screw rod 30 upper ends can arrange the end 31 that size is greater than its shaft external diameter, so just can avoid handle 50 to rotate to screw rod 30 upper ends and come off, and have further facilitated extracting tool use.
And sleeve 20 mouth of pipe places, lower end preferably extend upward and dodge groove 21, the groove width of dodging groove 21 is greater than the size of the Plug Division on fuel injector, for example, shown in Fig. 3,4, fall " U " shape or become a shape.Dismounting, just without the pipeline connecting on fuel injector is all dismantled during fuel injector, or also can be dismantled the asymmetric fuel injector of outer end shape easily like this, does not increase again the size of sleeve 20 simultaneously, saving manufacturing cost.On the bottom tube wall of sleeve 20, can offer in addition two each or gathering sills 22, gathering sill 22 is symmetrical arranged along the axle core of sleeve 20, its flute length direction is parallel to the axial of sleeve 20, the both ends or one end of connecting pin 40 just can be positioned at gathering sill 22 like this, can avoid fuel injector to be combined handle 50 and screw rod 3 integral-rotations too tight and that cause with cylinder wall, namely prevent that handle 50 from skidding.
A nut 60 can also be set, on screw thread mate with the screw thread on screw rod 30, nut 60 screws in screw rod 30 lower ends, it is large that nut 60 profiles are lower end, the step shape that upper end is little or taper type etc., now card hand 10 must be the groove type identical with the radian of nut 60 outer peripheral faces, flange 11 is arc with the arc anastomosis of groove, described connecting pin 40 is by screw rod 30, radially three being worn and is connected as a single entity of nut 60 and card hand 10, the radial dimension of connecting pin 40 is slightly less than the internal diameter in the hole on each parts of company of wearing with it, especially be less than the size of the through hole 12 in card hand 10, such one is to insert and to extract connecting pin 40 more smooth and easy, laborsaving, and as long as screw rod 30 moves down and drives card hand 10 lower ends to stretch out sleeve 20 lower ends, card hand 10 can be drawn close by the axle core along connecting pin 40 to screw rod 30 under external force so, thereby card hand lower end separately clamps fuel injector, then can carry out disassembling section, and without card hand 10 all being exposed to then separated card hand 10 clamping fuel injectors just of sleeve 20.In card hand 10, for connecting the through hole 12 of connecting pin 40, can also be provided with many groups, after one group of through hole 12 damages, to utilize other through hole 12 to continue to use on the one hand, and can select different through hole 12 according to the fuel injector of different length, reduce the operation of rotating handles 50.
Fuel injector remover of the present invention simple in structure, easy to use, is applicable to dismounting fuel injector, is certainly also applicable to similarly other parts of dismounting and fuel injector; In text, for convenience with defining tool upper and lower always of the upper and lower in scheming, this definition, not to being the restriction to the structure of extracting tool itself, is not to say that instrument can only be with illustrated direction placement or use.
Claims (7)
1. a tool for detaching engine injector, it is characterized in that: comprise for being supported on the supporting mechanism on fuel injector cylinder wall around, on supporting mechanism, connect the drawing mechanism for drawing fuel injector, described supporting mechanism is the sleeve (20) of circular tube shaped, the external diameter of its caliber and fuel injector coincide, its lower surface is vertical with tubular axis line, described drawing mechanism comprises at least two card hands (10), card hand (10) is positioned at supporting mechanism inside, the lower end of card hand (10) has the flange (11) extending in opposite directions, the edge thickness of flange (11) is corresponding with the axial dimension of fuel injector neck, described drawing mechanism comprises is separated from each other and the clutch closing up card hand (10) lower end,
Described card hand (10) is uniform along the axle core of supporting mechanism lower end;
Described drawing mechanism comprises screw rod (30), screw rod (30) inserts in sleeve (20), screw rod (30) lower end and card hand (10) are connected by connecting pin (40) radially, screw rod (30) top is positioned at sheathed handle (50) on the outside shaft of sleeve (20), the identical internal thread of external screw thread on the endoporus setting of handle (50) and screw rod (30), described screw rod (30) upper end is greater than the length of sleeve (20) to the distance of card hand (10) lower end;
Described screw rod (30) lower end arranges the nut (60) coordinating with it, nut (60) profile is the little step shape in great, upper end, lower end, described card hand (10) is the groove type identical with the radian of nut (60) outer peripheral face, described radially connecting pin (40) is worn card hand (10) and screw rod (30), nut (60) to be connected as a single entity, and radially the radial dimension of connecting pin (40) is slightly less than the internal diameter of each connecting hole.
2. a kind of tool for detaching engine injector according to claim 1, is characterized in that: mouth of pipe place, described sleeve (20) lower end has extended upward and dodged groove (21), and the groove width of dodging groove (21) is greater than the size of the Plug Division on fuel injector.
3. a kind of tool for detaching engine injector according to claim 1, it is characterized in that: on the tube wall of described sleeve (20), offer two gathering sills (22), gathering sill (22) is symmetrical arranged along the axle core of sleeve (20), its flute length direction is parallel to the axial of sleeve (20), and the two ends of described radially connecting pin (40) lay respectively in gathering sill (22).
4. a kind of tool for detaching engine injector according to claim 1, it is characterized in that: the internal diameter on described sleeve (20) top is slightly larger than the radial dimension of screw rod (30), bottom internal diameter coincide with the outer radial dimension being connected after card hand (10) of nut (60), the upper end of sleeve (20) outer surface comprises the head (23) of being convenient to gripping, and head (23) profile is the tubulose coaxially arranged with the stack shell of sleeve (20).
5. a kind of tool for detaching engine injector according to claim 4, it is characterized in that: head (23) external diameter of described sleeve (20) is greater than the external diameter of the pipe shaft section of sleeve (20), on the outer peripheral face of head (23), annular knurl is processed with concaveconvex structure, described handle (50) is glass holder shape, handle (50) is coaxially arranged with screw rod (30), its bottom surface is towards sleeve (20), and the outer peripheral face annular knurl of handle (50) is processed with concaveconvex structure.
6. a kind of tool for detaching engine injector according to claim 1, it is characterized in that: described handle (50) is upper offers handle installing hole (51) along the direction perpendicular to screw rod (30), described screw rod (30) upper end arranges has the end (31) that size is greater than its shaft external diameter.
7. a kind of tool for detaching engine injector according to claim 4, is characterized in that: described sleeve (20) is provided with rotary friction pad (24) on upper surface; Described card hand (10) is upper is provided with many groups for connecting the radially through hole (12) of connecting pin (40).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010280248.XA CN102398247B (en) | 2010-09-08 | 2010-09-08 | Tool for detaching engine injector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010280248.XA CN102398247B (en) | 2010-09-08 | 2010-09-08 | Tool for detaching engine injector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102398247A CN102398247A (en) | 2012-04-04 |
| CN102398247B true CN102398247B (en) | 2014-02-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010280248.XA Active CN102398247B (en) | 2010-09-08 | 2010-09-08 | Tool for detaching engine injector |
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| CN (1) | CN102398247B (en) |
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| CN110216627A (en) * | 2019-06-18 | 2019-09-10 | 神华包神铁路集团有限责任公司 | Device is removed in locomotive split pin |
| CN112355963B (en) * | 2020-11-12 | 2022-04-22 | 国网新疆电力有限公司巴州供电公司 | Electric energy meter buckle type lead seal opening device and single-hand lead seal opening method |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2076906U (en) * | 1990-07-03 | 1991-05-15 | 卢瑞颙 | Drawing horse (jaws vice) |
| US6035506A (en) * | 1998-05-22 | 2000-03-14 | Bowen; Joe | Fuel injector remover |
| CN2681863Y (en) * | 2004-03-22 | 2005-03-02 | 中国重型汽车集团有限公司 | Liner dismounting device for automobile engine fuel injector |
| EP0968366B1 (en) * | 1997-03-18 | 2006-07-12 | Siemens VDO Automotive Corporation | Automatic injector insertion station |
| CN2843775Y (en) * | 2005-11-09 | 2006-12-06 | 青岛港（集团）有限公司 | Detacher of fuel injector |
| CN2843776Y (en) * | 2005-11-09 | 2006-12-06 | 青岛港（集团）有限公司 | The sheath stripping attachment |
| CN201040370Y (en) * | 2007-06-11 | 2008-03-26 | 青岛港（集团）有限公司 | Dismounting tool for diesel engine fuel injector |
| CN201544174U (en) * | 2009-11-19 | 2010-08-11 | 奇瑞汽车股份有限公司 | Novel engine fuel injector removing tool |
-
2010
- 2010-09-08 CN CN201010280248.XA patent/CN102398247B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2076906U (en) * | 1990-07-03 | 1991-05-15 | 卢瑞颙 | Drawing horse (jaws vice) |
| EP0968366B1 (en) * | 1997-03-18 | 2006-07-12 | Siemens VDO Automotive Corporation | Automatic injector insertion station |
| US6035506A (en) * | 1998-05-22 | 2000-03-14 | Bowen; Joe | Fuel injector remover |
| CN2681863Y (en) * | 2004-03-22 | 2005-03-02 | 中国重型汽车集团有限公司 | Liner dismounting device for automobile engine fuel injector |
| CN2843775Y (en) * | 2005-11-09 | 2006-12-06 | 青岛港（集团）有限公司 | Detacher of fuel injector |
| CN2843776Y (en) * | 2005-11-09 | 2006-12-06 | 青岛港（集团）有限公司 | The sheath stripping attachment |
| CN201040370Y (en) * | 2007-06-11 | 2008-03-26 | 青岛港（集团）有限公司 | Dismounting tool for diesel engine fuel injector |
| CN201544174U (en) * | 2009-11-19 | 2010-08-11 | 奇瑞汽车股份有限公司 | Novel engine fuel injector removing tool |
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|---|---|
| CN102398247A (en) | 2012-04-04 |
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