CN113107728A - Underneath solenoid valve installation type oil sprayer - Google Patents
Underneath solenoid valve installation type oil sprayer Download PDFInfo
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- CN113107728A CN113107728A CN202110526190.0A CN202110526190A CN113107728A CN 113107728 A CN113107728 A CN 113107728A CN 202110526190 A CN202110526190 A CN 202110526190A CN 113107728 A CN113107728 A CN 113107728A
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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
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
- F02M61/04—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00 having valves, e.g. having a plurality of valves in series
- F02M61/10—Other injectors with elongated valve bodies, i.e. of needle-valve type
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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
- F02M51/00—Fuel-injection apparatus characterised by being operated electrically
- F02M51/06—Injectors peculiar thereto with means directly operating the valve needle
- F02M51/061—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means
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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
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
- F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
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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
- F02M65/006—Measuring or detecting fuel leakage of fuel injection apparatus
Abstract
The invention provides a lower electromagnetic valve mounting type oil sprayer which adopts a lower electromagnetic valve mounting arrangement structure, can flexibly meet the requirements of multiple mounting arrangement combinations of overhead or lateral high-pressure oil inlet, overhead or lateral low-pressure oil return, overhead or lateral wiring harness outlet and the like, and all high-pressure sealing contact surfaces are added with abnormal leakage collecting oil passages, can timely collect and monitor early high-pressure sealing leakage failure, and avoid engine faults caused by fuel leakage; meanwhile, the oil sprayer is provided with a needle valve stroke gasket, an armature stroke gasket, a needle valve spring gasket and an electromagnetic valve spring gasket structure, internal parameters of the oil sprayer can be flexibly adjusted, matching requirements for different flow rates and different system pressures are met, meanwhile, the machining cost can be reduced by adopting a gasket adjusting mode, and the ex-factory yield of products is improved.
Description
Technical Field
The invention relates to an oil sprayer, in particular to a bottom electromagnetic valve mounting type oil sprayer.
Background
With the implementation and the upgrading of the emission regulations of the marine engine, the upgrading of a mechanical fuel system in the marine diesel engine to a common rail fuel system is a great trend, and the design and the matching of an oil injector are a core and a difficulty of the upgrading of a diesel engine product. The existing marine diesel engine has various models, and for the matching of the oil injector, the requirements of installation interfaces such as high-pressure oil inlet, low-pressure oil return and a wire harness outlet are different, and in addition, most host plants are more prone to directly upgrading a common rail system on the original installation structure, so that the high-cost design of modularization, generalization and low cost of the oil injector is provided with very high challenges.
Most of the existing common rail oil injectors for vehicles are installed and arranged by adopting an overhead electromagnetic valve, but the thickness of a cylinder head cover of a marine engine is far larger than that of a vehicle engine, and if the overhead electromagnetic valve is adopted, risks such as reduction of rigidity of a control valve assembly, rapid increase of processing difficulty of an oil injection inner cavity and the like can be caused; meanwhile, part of marine oil injectors need to meet special requirements of overhead high-pressure oil inlet, overhead low-pressure oil return, overhead wiring harness outlets and the like in matching, and the existing overhead electromagnetic valve is large in size and difficult to structurally arrange in a limited space; in addition, compared with an engine for a vehicle, the engine for the ship has higher and longer reliability and service life requirements on a fuel system, especially for the problem of leakage of a high-pressure sealing surface, and the prior art scheme does not have the functions of collecting and monitoring abnormal leakage of high-pressure fuel of a fuel injector.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides the oil sprayer with the installed electromagnetic valve, which is used for matching with a marine engine so as to upgrade a common rail fuel system. The technical scheme adopted by the invention is as follows:
a fuel injector with an installed solenoid valve arranged below comprises a needle valve body, wherein a piston needle valve is arranged in the needle valve body, and the piston needle valve and the needle valve body are guided in a clearance fit manner;
a needle valve spring, a needle valve spring washer, a piston sleeve and an oil inlet valve plate are sequentially mounted on the upper step surface of the piston needle valve, and the piston needle valve is matched with the piston sleeve through a matching part;
the upper end face of the needle valve body is sequentially provided with a needle valve stroke gasket, an oil outlet valve plate, an armature plate and an oil injector body, and is tightly pressed and fixed with the needle valve body through a tightening cap;
under the action of the pressing force of the needle valve spring, the lower end of the oil inlet valve plate is tightly attached and sealed with the piston sleeve, the upper end of the oil inlet valve plate is tightly attached and sealed with the oil outlet valve plate, and the oil outlet valve plate is provided with a control valve tightly attached with an armature rod;
an electromagnetic valve spring is arranged on the step surface of the armature rod, an electromagnetic valve spring washer is arranged on the electromagnetic valve spring, and the electromagnetic valve spring tightly presses the control valve on the upper end surface of the oil outlet valve plate;
an armature stroke gasket, an electromagnetic valve and a compression spring are sequentially arranged on the armature disc, one end of the compression spring is compressed on the step surface of the inner hole of the oil injector body, and the electromagnetic valve and the armature stroke gasket are compressed on the upper end surface of the armature disc by the other end of the compression spring;
step surface is equipped with rather than clearance fit's armature under the armature rod, step surface is equipped with buffer spring under the armature, the buffer spring other end supports on the step surface in the armature dish, buffer spring will armature compresses tightly on the step surface under the armature rod.
Furthermore, the piston needle valve divides the inner cavity of the needle valve body into an upper cavity and a lower cavity, a circulation groove is arranged on the piston needle valve, and two ends of the circulation groove are respectively communicated with the upper cavity and the lower cavity.
Further, the injector body side direction is equipped with first high-pressure inlet port, armature plate side direction is equipped with second high-pressure inlet port, it is equipped with the third high-pressure oil inlet hole to go out oil valve plate side direction, needle valve stroke packing ring side direction is equipped with high-pressure oil feed groove, first high-pressure inlet port the second high-pressure inlet port the third high-pressure oil inlet hole high-pressure oil feed groove with the needle valve body go up the cavity the circulation groove down the cavity intercommunication forms the high-pressure oil feed route.
Furthermore, the side of the oil inlet valve plate is provided with an oil inlet throttling hole, the lower end face of the oil outlet valve plate is sequentially provided with a transverse groove, a straight hole and an oil outlet throttling hole which are communicated with each other, and a cavity formed by the oil inlet valve plate, the oil outlet valve plate, the piston sleeve and the piston needle valve is a control cavity.
Furthermore, the electromagnetic valve is connected with a wire harness, a wire harness hole is formed in the oil injector body, and the wire harness sequentially penetrates through the compression spring inner hole and the wire harness hole and is led out to the outer side of the oil injector.
Furthermore, a cavity defined by the oil outlet valve plate and the armature plate is a lower low-pressure cavity, the electromagnetic valve and the oil injector are axially provided with an O-shaped ring for preventing the oil injector body and the electromagnetic valve from axially leaking fuel oil, the armature plate, the electromagnetic valve and the cavity defined by the oil injector body are upper low-pressure cavities, a plurality of low-pressure oil holes are further arranged in the armature plate and uniformly distributed along the circumferential direction, the upper end surface of the armature plate is provided with a low-pressure oil groove, the oil injector body is laterally provided with a low-pressure oil duct, and the low-pressure oil holes, the low-pressure oil groove, the upper low-pressure cavity, the low-pressure oil holes and the lower low-pressure cavity are communicated to form a low-pressure oil outlet passage.
Furthermore, an annular oil drainage groove is formed in the lower end face of the needle valve stroke gasket, and an abnormal oil drainage hole communicated with the annular oil drainage groove is formed in the annular oil drainage groove.
Furthermore, a first abnormal oil drainage groove and a low-pressure kidney-shaped groove are formed in the lower end face of the oil outlet valve plate, the first abnormal oil drainage groove is communicated with the low-pressure kidney-shaped groove and surrounds the outer side of a third high-pressure oil inlet hole orifice of the oil outlet valve plate, the low-pressure kidney-shaped groove is communicated with the abnormal oil drainage hole of the needle valve stroke gasket, a low-pressure oil drainage hole is formed in the low-pressure kidney-shaped groove, and the low-pressure kidney-shaped groove is communicated with the lower low-pressure cavity through the low-pressure oil drainage hole;
a second abnormal oil drainage groove is formed in the upper end face of the oil outlet valve plate, surrounds the outer side of a third high-pressure oil inlet hole of the oil outlet valve plate and is communicated with the lower low-pressure cavity;
and a third abnormal oil drainage groove is formed in the upper end face of the armature plate, the third abnormal oil drainage groove surrounds the outer side of an orifice of a second high-pressure oil inlet hole of the armature plate, and the third abnormal oil drainage groove is communicated with the upper low-pressure cavity.
Further, the oil injector body is provided with an overhead oil inlet or a lateral oil inlet and an overhead wiring harness outlet or a lateral wiring harness outlet according to the matching requirement of the engine.
Further, the fuel injector body is provided with an overhead fuel outlet or a lateral fuel outlet according to the matching requirement of the engine.
The invention has the advantages that:
1) the oil injector adopts a lower electromagnetic valve installation arrangement structure, and can flexibly meet various installation arrangement combinations of overhead or lateral high-pressure oil inlet, overhead or lateral low-pressure oil return, overhead or lateral wiring harness outlet and the like.
2) Abnormal leakage collecting oil passages are additionally arranged on all high-pressure sealing contact surfaces of the oil sprayer, early high-pressure sealing leakage failure can be timely collected and monitored, and engine faults caused by fuel leakage are avoided.
3) The oil sprayer is provided with a needle valve stroke gasket, an armature stroke gasket, a needle valve spring gasket and an electromagnetic valve spring gasket structure, internal parameters of the oil sprayer can be flexibly adjusted, matching requirements for different flow rates and different system pressures are met, meanwhile, the machining cost can be reduced by adopting a gasket adjusting mode, and the ex-factory yield of products is improved.
Drawings
FIG. 1 is a sectional view of an oil inlet passage of a fuel injector with a solenoid valve installed therebelow according to an embodiment of the invention.
FIG. 2 is a cross-sectional view of a fuel injector return channel with a solenoid valve installed underneath in an embodiment of the invention.
FIG. 3 is a bottom view of an oil outlet valve plate of a fuel injector with a solenoid valve installed therebelow according to an embodiment of the invention.
FIG. 4 is a top view of an oil outlet valve plate of a fuel injector with a solenoid valve installed therebelow according to an embodiment of the invention.
FIG. 5 is a top view of an under-solenoid mounted fuel injector armature plate according to an embodiment of the present disclosure.
FIG. 6 is a sectional view of an oil inlet of a fuel injector with an installed solenoid valve arranged therebelow in the embodiment of the invention.
FIG. 7 is a sectional view of an oil outlet of a fuel injector with a solenoid valve installed therebelow according to an embodiment of the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in fig. 1, the fuel injector with the installed solenoid valve provided by the embodiment of the invention comprises a needle valve body 2, wherein a piston needle valve 1 is arranged in the needle valve body 2, and the piston needle valve 1 and the needle valve body 2 are guided in a clearance fit manner; the needle valve spring 3, the needle valve spring washer 4, the piston sleeve 5 and the oil inlet valve plate 7 are sequentially mounted on the step surface of the piston needle valve 1, and the piston needle valve 1 and the piston sleeve 5 are matched by a matching part; the upper end surface of the needle valve body 2 is sequentially provided with a needle valve stroke gasket 8, an oil outlet valve plate 10, an armature disc 11 and an oil injector body 21, and is tightly pressed and fixed with the needle valve body 2 through a tightening cap 6; under the action of the pressing force of the needle valve spring 3, the lower end of the oil inlet valve plate 7 is tightly attached and sealed with the piston sleeve 5, the upper end of the oil inlet valve plate 7 is tightly attached and sealed with the oil outlet valve plate 10, and the oil outlet valve plate 10 is provided with a control valve 9 tightly attached with an armature rod 15; an electromagnetic valve spring 17 is arranged on the step surface of the armature rod 15, an electromagnetic valve spring washer 18 is arranged on the electromagnetic valve spring 17, and the electromagnetic valve spring 17 tightly presses the control valve 9 on the upper end surface of the oil outlet valve plate 10; an armature stroke gasket 14, an electromagnetic valve 22 and a compression spring 19 are sequentially arranged on the armature plate 11, one end of the compression spring 19 is compressed on the step surface of the inner hole of the oil injector body 21, and the electromagnetic valve 22 and the armature stroke gasket 14 are compressed on the upper end surface of the armature plate 11 by the other end; step surface is equipped with rather than clearance fit's armature 13 under the armature rod 15, armature 13 lower step surface is equipped with buffer spring 12, the buffer spring 12 other end supports on the step surface in the armature dish 11, buffer spring 12 will armature 13 compresses tightly on the step surface under the armature rod 15. The oil injector is provided with a needle valve stroke gasket 8, an armature stroke gasket 14, a needle valve spring gasket 4 and an electromagnetic valve spring gasket 18, internal parameters of the oil injector can be flexibly adjusted, matching requirements on different flow rates and different system pressures are met, meanwhile, the machining cost can be reduced by adopting a gasket adjusting mode, and the factory yield of products is improved
Specifically, the piston needle valve 1 divides the inner cavity of the needle valve body 2 into an upper cavity 201 and a lower cavity 202, a flow groove 101 is arranged on the piston needle valve 1, and two ends of the flow groove 101 are respectively communicated with the upper cavity 201 and the lower cavity 202; the oil injector 21 is laterally provided with a first high-pressure oil inlet 2101, the armature disc 11 is laterally provided with a second high-pressure oil inlet 1101, the oil outlet valve plate 10 is laterally provided with a third high-pressure oil inlet 1001, the needle valve stroke gasket 8 is laterally provided with a high-pressure oil inlet groove 801, and the first high-pressure oil inlet 2101, the second high-pressure oil inlet 1101, the third high-pressure oil inlet 1001 and the high-pressure oil inlet groove 801 are communicated with the upper cavity 201, the flow groove 101 and the lower cavity 202 of the needle valve body 2 to form a high-pressure oil inlet passage; an oil inlet throttling hole 701 is formed in the side direction of the oil inlet valve plate 7, a transverse groove 1002, a straight hole 1003 and an oil outlet throttling hole 1004 which are communicated with one another are sequentially formed in the lower end face of the oil outlet valve plate 10, and a cavity surrounded by the oil inlet valve plate 7, the oil outlet valve plate 10, the piston sleeve 5 and the piston needle valve 1 is a control cavity 23; the electromagnetic valve 22 is connected with a wire harness 20, a wire harness hole 2102 is formed in the injector body 21, and the wire harness 20 sequentially penetrates through an inner hole of the compression spring 19 and the wire harness hole 2102 to be led out to the outer side of the injector.
Specifically, as shown in fig. 2, a cavity enclosed by the oil outlet valve plate 10 and the armature disc 11 is a lower low pressure cavity 1102, the electromagnetic valve 22 and the oil injector 21 are axially provided with an O-ring 16 for preventing axial fuel leakage of the oil injector body 21 and the electromagnetic valve 22, the cavity enclosed by the armature disc 11, the electromagnetic valve 22 and the oil injector body 21 is an upper low pressure cavity 1103, the armature disc 11 is further provided with a plurality of low pressure oil holes 1104, the plurality of low pressure oil holes 1104 are uniformly distributed along a circumferential direction, the upper end surface of the armature disc 11 is provided with a low pressure oil groove 1105, the oil injector body 21 is laterally provided with a low pressure oil passage 2103, and the low pressure oil hole 2103, the low pressure oil groove 1105, the upper low pressure cavity 1103, the low pressure oil hole 2103 and the lower low pressure cavity 1102 are communicated to form a low pressure oil outlet passage.
Specifically, as shown in fig. 1, an annular oil drainage groove 802 is formed in the lower end face of the needle valve stroke gasket 8, and an abnormal oil drainage hole 803 communicated with the annular oil drainage groove 802 is formed in the annular oil drainage groove 802.
Specifically, as shown in fig. 1 and 3, a first abnormal oil drainage groove 1005 and a low-pressure kidney-shaped groove 1006 are formed in the lower end surface of the oil outlet valve plate 10, the first abnormal oil drainage groove 1005 and the low-pressure kidney-shaped groove 1006 are communicated and surround the outer side of a third high-pressure oil inlet hole orifice of the oil outlet valve plate 10, the low-pressure kidney-shaped groove 1006 is communicated with the abnormal oil drainage hole 803 of the needle valve stroke gasket 8, a low-pressure oil drainage hole 1007 is formed in the low-pressure kidney-shaped groove 1006, and the low-pressure kidney-shaped groove 1006 is communicated with the lower low-pressure cavity 1102 through the low-pressure oil drainage hole 1007.
Further, as shown in fig. 1 and 4, a second abnormal oil drainage groove 1008 is provided on an upper end surface of the oil outlet valve plate 10, the second abnormal oil drainage groove 1008 surrounds an outer side of a third high-pressure oil inlet hole of the oil outlet valve plate 10, and the second abnormal oil drainage groove 1008 is communicated with the lower low-pressure chamber 1102.
Further, as shown in fig. 1 and 5, a third abnormal oil drainage groove 1106 is formed in the upper end surface of the armature plate 11, the third abnormal oil drainage groove 1106 surrounds the outer side of the second high-pressure oil inlet hole of the armature plate 11, and the third abnormal oil drainage groove 1106 is communicated with the upper low-pressure cavity 1103. Abnormal leakage collecting oil passages are additionally arranged on all high-pressure sealing contact surfaces of the oil sprayer, early high-pressure sealing leakage failure can be timely collected and monitored, and engine faults caused by fuel leakage are avoided.
Specifically, as shown in fig. 6, the oil injector body 21 is provided with an overhead oil inlet 2104 or a lateral oil inlet 2105, an overhead wiring harness outlet 2106 or a lateral wiring harness outlet 2107 according to the engine matching requirement.
Specifically, as shown in fig. 7, the fuel injector body 21 is provided with a top fuel outlet 2108 or a side fuel outlet 2109 according to the engine matching requirement. The oil injector adopts a lower electromagnetic valve installation arrangement structure, and can flexibly meet various installation arrangement combinations of overhead or lateral high-pressure oil inlet, overhead or lateral low-pressure oil return, overhead or lateral wiring harness outlet and the like.
When the electromagnetic valve 22 is not electrified, the control valve 9 is in a closed state, the piston needle valve 1 is at the position of the bottom dead center, and the oil injector does not inject oil; after the electromagnetic valve 22 is electrified, the control valve 9 is opened, the pressure of oil in the control cavity 23 is gradually reduced, the piston needle valve 1 moves upwards after the pressure is lower than a critical value A until the piston needle valve reaches a top dead center and is limited by the oil inlet valve plate 7, and the oil injector starts to inject oil; after the electromagnetic valve 22 is powered off, the control valve 9 is closed, the oil pressure in the control cavity 23 gradually rises, the piston needle valve 1 moves downwards after reaching the high-pressure critical value B until reaching the bottom dead center and is limited by the conical surface of the needle valve body 2, and the oil injector stops injecting oil. When high-pressure leakage occurs on four sealing contact surfaces of the needle valve body 2 and the needle valve stroke gasket 8, the needle valve stroke gasket 8 and the oil outlet valve plate 10, the oil outlet valve plate 10 and the armature plate 11, and the armature plate 11 and the oil injector body 21, the leaked high-pressure fuel oil enters the lower low-pressure cavity 1102 or the upper low-pressure cavity 1103 through the annular oil drainage groove 802, the first abnormal oil drainage groove 1005, the second abnormal oil drainage groove 1008 and the third abnormal oil drainage groove 1106 respectively and flows out together with control return oil flowing out of the control valve 9, and whether high-pressure leakage exists can be judged on the outer side of the oil injector through detecting and judging the return oil amount or the return oil temperature and the like, so that the functions of early warning and early protection are realized.
Finally, it should be noted that the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to examples, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the claims of the present invention.
Claims (10)
1. The oil sprayer with the installed electromagnetic valve arranged below is characterized by comprising a needle valve body (2), wherein a piston needle valve (1) is arranged in the needle valve body (2), and the piston needle valve (1) and the needle valve body (2) are guided in a clearance fit manner;
the needle valve (1) is characterized in that a needle valve spring (3), a needle valve spring washer (4), a piston sleeve (5) and an oil inlet valve plate (7) are sequentially arranged on the step surface of the piston needle valve (1), and the piston needle valve (1) is matched with the piston sleeve (5) through a matching part;
the upper end face of the needle valve body (2) is sequentially provided with a needle valve stroke gasket (8), an oil outlet valve plate (10), an armature disc (11) and an oil injector body (21), and is tightly pressed and fixed with the needle valve body (2) through a tightening cap (6);
under the action of the pressing force of the needle valve spring (3), the lower end of the oil inlet valve plate (7) is tightly attached and sealed with the piston sleeve (5), the upper end of the oil inlet valve plate (7) is tightly attached and sealed with the oil outlet valve plate (10), and the oil outlet valve plate (10) is provided with a control valve (9) tightly attached with an armature rod (15);
an electromagnetic valve spring (17) is arranged on the step surface of the armature rod (15), an electromagnetic valve spring washer (18) is arranged on the electromagnetic valve spring (17), and the electromagnetic valve spring (17) tightly presses the control valve (9) on the upper end surface of the oil outlet valve plate (10);
an armature stroke gasket (14), an electromagnetic valve (22) and a compression spring (19) are sequentially arranged on the armature disc (11), one end of the compression spring (19) is compressed on the step surface of the inner hole of the oil injector body (21), and the electromagnetic valve (22) and the armature stroke gasket (14) are compressed on the upper end surface of the armature disc (11) by the other end of the compression spring;
step surface is equipped with rather than clearance fit's armature (13) under armature rod (15), step surface is equipped with buffer spring (12) under armature (13), buffer spring (12) other end supports on the step surface in armature dish (11), buffer spring (12) will armature (13) compress tightly on the step surface under armature rod (15).
2. The under-laid solenoid valve mounted fuel injector according to claim 1,
the piston needle valve (1) divides the inner cavity of the needle valve body (2) into an upper cavity (201) and a lower cavity (202), a circulation groove (101) is formed in the piston needle valve (1), and two ends of the circulation groove (101) are communicated with the upper cavity (201) and the lower cavity (202) respectively.
3. The under-laid solenoid valve mounted fuel injector according to claim 2,
injector body (21) side direction is equipped with first high-pressure inlet port (2101), armature plate (11) side direction is equipped with second high-pressure inlet port (1101), oil outlet valve plate (10) side direction is equipped with third high-pressure oil inlet hole (1001), needle valve stroke packing ring (8) side direction is equipped with high-pressure oil feed groove (801), first high-pressure inlet port (2101) second high-pressure inlet port (1101), third high-pressure oil inlet hole (1001) high-pressure oil feed groove (801) with needle valve body (2) go up cavity (201), runner (101) cavity (202) intercommunication forms high-pressure oil feed passageway down.
4. The under-laid solenoid valve mounted fuel injector according to claim 1,
the oil inlet valve plate (7) is laterally provided with an oil inlet throttling hole (701), the lower end face of the oil outlet valve plate (10) is sequentially provided with a transverse groove (1002), a straight hole (1003) and an oil outlet throttling hole (1004) which are communicated with each other, and a cavity surrounded by the oil inlet valve plate (7), the oil outlet valve plate (10), the piston sleeve (5) and the piston needle valve (1) is a control cavity (23).
5. The under-laid solenoid valve mounted fuel injector according to claim 1,
the electromagnetic valve (22) is connected with a wiring harness (20), a wiring harness hole (2102) is formed in the oil injector body (21), and the wiring harness (20) sequentially penetrates through an inner hole of the compression spring (19) and the wiring harness hole (2102) and is led out to the outer side of the oil injector.
6. The under-laid solenoid valve mounted fuel injector according to claim 1,
a cavity surrounded by the oil outlet valve plate (10) and the armature plate (11) is a lower low-pressure cavity (1102), the electromagnetic valve (22) and the fuel injector (21) are provided with an O-shaped ring (16) in the axial direction, for preventing axial fuel leakage between the injector body (21) and the solenoid valve (22), a cavity body enclosed by the armature plate (11), the electromagnetic valve (22) and the oil injector body (21) is an upper low-pressure cavity (1103), a plurality of low-pressure oil holes (1104) are also arranged in the armature plate (11), the low-pressure oil holes (1104) are uniformly distributed along the circumferential direction, the upper end surface of the armature plate (11) is provided with a low-pressure oil groove (1105), the oil injector body (21) is laterally provided with a low-pressure oil duct (2103), the low-pressure oil hole (2103), the low-pressure oil groove (1105), the upper low-pressure cavity (1103), the low-pressure oil hole (2103) and the lower low-pressure cavity (1102) are communicated to form a low-pressure oil outlet passage.
7. The under-laid solenoid valve mount type fuel injector according to claim 6,
the needle valve stroke gasket (8) lower terminal surface is equipped with annular draining groove (802), be equipped with in annular draining groove (802) rather than the unusual draining hole (803) of intercommunication.
8. The under-laid solenoid valve mount type fuel injector according to claim 7,
a first abnormal oil drainage groove (1005) and a low-pressure kidney-shaped groove (1006) are formed in the lower end face of the oil outlet valve plate (10), the first abnormal oil drainage groove (1005) is communicated with the low-pressure kidney-shaped groove (1006) and surrounds the outer side of a third high-pressure oil inlet hole opening of the oil outlet valve plate (10), the low-pressure kidney-shaped groove (1006) is communicated with the abnormal oil drainage hole (803) of the needle valve stroke gasket (8), a low-pressure oil drainage hole (1007) is formed in the low-pressure kidney-shaped groove (1006), and the low-pressure kidney-shaped groove (1006) is communicated with the lower low-pressure cavity (1102) through the low-pressure oil drainage hole (1007);
a second abnormal oil drainage groove (1008) is formed in the upper end face of the oil outlet valve plate (10), the second abnormal oil drainage groove (1008) surrounds the outer side of a third high-pressure oil inlet hole of the oil outlet valve plate (10), and the second abnormal oil drainage groove (1008) is communicated with the lower low-pressure cavity (1102);
a third abnormal oil drainage groove (1106) is formed in the upper end face of the armature plate (11), the third abnormal oil drainage groove (1106) surrounds the outer side of an orifice of a second high-pressure oil inlet hole of the armature plate (11), and the third abnormal oil drainage groove (1106) is communicated with the upper low-pressure cavity (1103).
9. The under-laid solenoid valve mounted fuel injector according to claim 1,
the oil injector body (21) is provided with an overhead oil inlet (2104) or a lateral oil inlet (2105) and an overhead wiring harness outlet (2106) or a lateral wiring harness outlet (2107) according to the matching requirement of an engine.
10. The under-laid solenoid valve mounted fuel injector according to claim 1,
the oil injector body (21) is provided with an overhead oil outlet (2108) or a lateral oil outlet (2109) according to the matching requirement of an engine.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111528299.4A CN114109684B (en) | 2021-05-14 | 2021-05-14 | Structure is collected to unusual leakage of sprayer high pressure fuel |
| CN202110526190.0A CN113107728A (en) | 2021-05-14 | 2021-05-14 | Underneath solenoid valve installation type oil sprayer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110526190.0A CN113107728A (en) | 2021-05-14 | 2021-05-14 | Underneath solenoid valve installation type oil sprayer |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111528299.4A Division CN114109684B (en) | 2021-05-14 | 2021-05-14 | Structure is collected to unusual leakage of sprayer high pressure fuel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113107728A true CN113107728A (en) | 2021-07-13 |
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Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110526190.0A Pending CN113107728A (en) | 2021-05-14 | 2021-05-14 | Underneath solenoid valve installation type oil sprayer |
| CN202111528299.4A Active CN114109684B (en) | 2021-05-14 | 2021-05-14 | Structure is collected to unusual leakage of sprayer high pressure fuel |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111528299.4A Active CN114109684B (en) | 2021-05-14 | 2021-05-14 | Structure is collected to unusual leakage of sprayer high pressure fuel |
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| Country | Link |
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| CN (2) | CN113107728A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1288486A2 (en) * | 2001-09-04 | 2003-03-05 | Robert Bosch Gmbh | Leakage channel in a high-pressure fuel system |
| JP2003097389A (en) * | 2001-09-20 | 2003-04-03 | Denso Corp | Metal seal device of metal product |
| CN103975160A (en) * | 2011-11-07 | 2014-08-06 | 卡特彼勒公司 | Fuel injector with needle control system that includes f, a, z and e orifices |
| CN105840376A (en) * | 2016-05-23 | 2016-08-10 | 辽阳新风科技有限公司 | No-static-leakage low-inertia oil sprayer module and oil sprayer |
| CN106762291A (en) * | 2017-01-18 | 2017-05-31 | 哈尔滨工程大学 | A kind of board-like electric-controlled fuel injector of minute hand valve opening without static leakage |
| JP2019074037A (en) * | 2017-10-17 | 2019-05-16 | 株式会社デンソー | Fuel injection valve |
| CN212690215U (en) * | 2020-06-30 | 2021-03-12 | 无锡威孚高科技集团股份有限公司 | Split type oil sprayer of sectional oil sprayer |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006214394A (en) * | 2005-02-04 | 2006-08-17 | Denso Corp | Fuel injection valve |
| JP6376988B2 (en) * | 2014-09-02 | 2018-08-22 | 株式会社デンソー | Fuel injection valve |
-
2021
- 2021-05-14 CN CN202110526190.0A patent/CN113107728A/en active Pending
- 2021-05-14 CN CN202111528299.4A patent/CN114109684B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1288486A2 (en) * | 2001-09-04 | 2003-03-05 | Robert Bosch Gmbh | Leakage channel in a high-pressure fuel system |
| JP2003097389A (en) * | 2001-09-20 | 2003-04-03 | Denso Corp | Metal seal device of metal product |
| CN103975160A (en) * | 2011-11-07 | 2014-08-06 | 卡特彼勒公司 | Fuel injector with needle control system that includes f, a, z and e orifices |
| CN105840376A (en) * | 2016-05-23 | 2016-08-10 | 辽阳新风科技有限公司 | No-static-leakage low-inertia oil sprayer module and oil sprayer |
| CN106762291A (en) * | 2017-01-18 | 2017-05-31 | 哈尔滨工程大学 | A kind of board-like electric-controlled fuel injector of minute hand valve opening without static leakage |
| JP2019074037A (en) * | 2017-10-17 | 2019-05-16 | 株式会社デンソー | Fuel injection valve |
| CN212690215U (en) * | 2020-06-30 | 2021-03-12 | 无锡威孚高科技集团股份有限公司 | Split type oil sprayer of sectional oil sprayer |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114109684A (en) | 2022-03-01 |
| CN114109684B (en) | 2023-02-14 |
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Application publication date: 20210713 |
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