CN114718785A - Internal oil passing structure of diesel pump - Google Patents
Internal oil passing structure of diesel pump Download PDFInfo
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- CN114718785A CN114718785A CN202210421167.XA CN202210421167A CN114718785A CN 114718785 A CN114718785 A CN 114718785A CN 202210421167 A CN202210421167 A CN 202210421167A CN 114718785 A CN114718785 A CN 114718785A
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- Prior art keywords
- oil
- assembly
- oil inlet
- check valve
- valve assembly
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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
- F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
- F02M59/44—Details, components parts, or accessories not provided for in, or of interest apart from, the apparatus of groups F02M59/02 - F02M59/42; Pumps having transducers, e.g. to measure displacement of pump rack or piston
- F02M59/46—Valves
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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
- F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
- F02M37/22—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system
- F02M37/32—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system characterised by filters or filter arrangements
- F02M37/34—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system characterised by filters or filter arrangements by the filter structure, e.g. honeycomb, mesh or fibrous
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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
- F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
- F02M37/22—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system
- F02M37/32—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system characterised by filters or filter arrangements
- F02M37/44—Filters structurally associated with pumps
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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
- F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
- F02M59/44—Details, components parts, or accessories not provided for in, or of interest apart from, the apparatus of groups F02M59/02 - F02M59/42; Pumps having transducers, e.g. to measure displacement of pump rack or piston
- F02M59/46—Valves
- F02M59/464—Inlet valves of the check valve type
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Abstract
The invention discloses an internal oil passing structure of a diesel pump, which comprises a filter screen assembly, a one-way valve assembly, an oil inlet assembly and an oil pump motor which are sequentially arranged in a casing from bottom to top, wherein a cover is fixed at the top of the casing, an oil cavity is arranged at the bottom of the cover, an oil outlet assembly is arranged at the top of the cover, a pressure relief valve assembly is arranged in the oil cavity, the one-way valve assembly is fixed above the filter screen assembly through a mounting seat, an oil inlet channel is arranged on the mounting seat and is communicated with an oil inlet of the oil inlet assembly, the one-way valve assembly is communicated with an oil outlet of the oil inlet assembly, when the diesel pump is powered on, the one-way valve assembly is closed, fluid enters the oil inlet assembly from the oil inlet channel, when the diesel pump is powered off, the one-way valve assembly is opened, and the fluid enters the diesel pump from the one-way valve assembly. The invention improves the problem of difficult starting of the engine, is particularly suitable for oil supply systems with weak fluidity such as diesel oil, and can keep good oil pumping performance and ignition speed even at low temperature.
Description
Technical Field
The invention relates to an internal oil passing structure of a diesel pump.
Background
An electric fuel pump delivers sufficient fuel to the fuel injector and maintains a nominal pressure to ensure efficient injection of fuel. The electric fuel pump is an extremely important component of an oil supply system and plays an important role in ensuring smoothness and stability of an oil way. Electric fuel pumps are typically constructed as an electromechanical assembly of a micro-pump connected to a micro-motor and encapsulated by a housing and auxiliary components for delivering fuel from the fuel tank to an engine in a fuel supply system for a gasoline or diesel engine (GB/T25984.1-2010).
The electric fuel pump can be generally divided into a brush electric fuel pump and a brushless electric fuel pump, and the brushless fuel pump is favored due to the advantages of long service life, difficult loss, low interference, low noise and the like. CN203271974U discloses a brushless motor roller pump, which integrates a roller pump, a brushless motor controller, and a pressure release valve, so as to reduce the overall installation volume and realize the miniaturization of the structure. However, the engine is difficult to start and needs a long ignition starting time due to various reasons such as long oil distribution line of an oil supply system, poor sealing performance of a low-pressure oil path of an oil pipe, no manual exhaust when a new machine is off line or no air exhaust when the oil path is disassembled and maintained, and large oil path drop of agricultural machinery and engineering machinery. If the fuel, especially diesel, has reduced fluidity at low temperatures, cold start of the engine is more difficult.
Disclosure of Invention
Aiming at the problems, the invention provides an internal oil passing structure of a diesel pump, which solves the problem of difficult starting of an engine, particularly difficult cold starting.
The technical scheme adopted by the invention is as follows:
the utility model provides an interior oily structure of crossing of diesel pump, includes filter screen subassembly, check valve subassembly, oil feed subassembly and the oil pump motor that sets gradually in the casing from bottom to top, the top of casing is fixed with the cover, cover bottom be the oil pocket, the top is equipped with the subassembly of producing oil, the oil pocket in be equipped with the pressure release valve subassembly, the check valve subassembly pass through the mount pad and fix in filter screen subassembly top, the mount pad on be equipped with the oil feed passageway, the oil feed passageway be linked together with the oil inlet of oil feed subassembly, the oil-out of check valve subassembly and oil feed subassembly be linked together, when the diesel pump circular telegram, the check valve subassembly close, fluid gets into the oil feed subassembly from the oil feed passageway, when the diesel pump outage, the check valve subassembly open, fluid gets into the diesel pump from the check valve subassembly.
The one-way valve assembly is arranged at the bottom, so that the resistance of fuel in the pump can be reduced.
Preferably, an oil passage is arranged at the outer circle of the stator of the oil pump motor.
Preferably, the top of the oil passing channel is communicated with the oil cavity, and the bottom of the oil passing channel is communicated with the check valve assembly.
The oil passing channel can improve the oil supply efficiency, reduce the resistance of fuel oil in the pump and play a role in cooling and radiating the stator.
Preferably, the number of the oil passing channels is 6, and the oil passing channels are circumferentially and uniformly distributed.
The oil passing channel uniformly distributed outside the stator can ensure that fuel oil is more uniform and stable when passing through the oil passing channel.
Preferably, the check valve assembly has 4, is the circumference array on the mount pad, oil feed passageway have 5, wherein 1 oil feed passageway is located the central point of mount pad, 4 oil feed passageways and check valve assembly interval distribution on the mount pad.
The oil inlet channel has 5, can increase the fuel feeding efficiency of pump during operation.
Preferably, at least two mounting lugs which are uniformly distributed in the circumferential direction are fixed on the periphery of the cover, and a mounting hole is formed in the center of each mounting lug.
The filter screen subassembly is used for filtering the impurity in the fuel, improves the cleanliness factor of fuel to reduce the loss to the mechanism.
The invention has the beneficial effects that:
1. the invention provides two using states for the electric fuel pump: the engine oil inlet assembly is in a working state, fluid enters the pump body from the oil inlet channel, the oil inlet assembly works to pump the fluid after being pressurized and then the fluid is supplied to the oil supply system, and in a non-use state, the fluid enters from the one-way valve and enters the oil cavity through the oil passing channel and the oil inlet assembly, so that the engine oil inlet assembly has extremely beneficial effects on starting of the engine, can help the oil supply system to exhaust and eliminate residual pressure, especially in a low-temperature environment, enhances the fluidity of the fluid, can lubricate a mechanism and can reduce abrasion;
2. the invention improves the problem of difficult starting of the engine, improves the performances of the oil supply system such as fluidity, starting efficiency and the like through the internal oil passing structure, is particularly suitable for the oil supply system such as diesel oil with weak fluidity, and can keep good oil pumping performance and ignition speed even at low temperature.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic bottom view of the concealed screen assembly of the present invention;
FIG. 3 is a schematic view of the internal structure of the present invention;
FIG. 4 is a schematic cross-sectional view of the present invention;
FIG. 5 is a cross-sectional view A-A of FIG. 4;
fig. 6 is a schematic structural view of the cover.
Detailed Description
The invention is described in further detail below with reference to specific embodiments and with reference to the attached drawings.
Example 1
As shown in fig. 1-6, an internal oil passing structure of a diesel pump comprises a filter screen assembly 2, a check valve assembly 3, an oil inlet assembly 4 and an oil pump motor 5 which are sequentially arranged in a casing 1 from bottom to top, wherein a cover 6 is fixed at the top of the casing 1, an oil cavity 7 is arranged at the bottom of the cover 6, an oil outlet assembly 8 is arranged at the top of the cover, a pressure release valve assembly 9 is arranged in the oil cavity 7, the check valve assembly 3 is fixed above the filter screen assembly 2 through a mounting seat 10, an oil inlet channel 11 is arranged on the mounting seat 10, the oil inlet channel 11 is communicated with an oil inlet of the oil inlet assembly 4, the check valve assembly 3 is communicated with an oil outlet of the oil inlet assembly 4, when the diesel pump is powered on, the check valve assembly 3 is closed, fluid enters the oil inlet assembly 4 from the oil inlet channel 11, and when the diesel pump is powered off, the check valve assembly 3 is opened, from the check valve assembly 3, the fluid enters the diesel pump.
At least two mounting convex blocks 13 which are uniformly distributed in the circumferential direction are fixed on the periphery of the cover 6, and a mounting hole 14 is formed in the center of each mounting convex block 13.
After the power supply is switched on, a controller in the oil outlet assembly 8 determines the phase change position of the brushless direct current motor by detecting three-phase back electromotive force of the motor, then controls inversion output, an inverter circuit outputs direct current chopped wave to a stator coil in the stator assembly to generate an electromagnetic field to form induced electromotive force, magnetic steel on the pump inner rotor assembly starts to rotate after sensing the electromagnetic field, so that the whole process of electric energy-magnetic energy-kinetic energy conversion is completed, the rotation of the rotor assembly drives a rotating wheel in the oil inlet assembly 4 to rotate at a high speed, the oil inlet assembly 4 starts to pump oil, and the one-way valve assembly 3 is opened to provide an oil inlet channel after power failure.
Example 2
As shown in fig. 1-6, an internal oil passing structure of a diesel pump comprises a filter screen assembly 2, a check valve assembly 3, an oil inlet assembly 4 and an oil pump motor 5 which are sequentially arranged in a casing 1 from bottom to top, wherein a cover 6 is fixed at the top of the casing 1, an oil cavity 7 is arranged at the bottom of the cover 6, an oil outlet assembly 8 is arranged at the top of the cover, a pressure release valve assembly 9 is arranged in the oil cavity 7, the check valve assembly 3 is fixed above the filter screen assembly 2 through a mounting seat 10, an oil inlet channel 11 is arranged on the mounting seat 10, the oil inlet channel 11 is communicated with an oil inlet of the oil inlet assembly 4, the check valve assembly 3 is communicated with an oil outlet of the oil inlet assembly 4, when the diesel pump is powered on, the check valve assembly 3 is closed, fluid enters the oil inlet assembly 4 from the oil inlet channel 11, and when the diesel pump is powered off, the check valve assembly 3 is opened, from the check valve assembly 3, the fluid enters the diesel pump.
At least two mounting convex blocks 13 which are uniformly distributed in the circumferential direction are fixed on the periphery of the cover 6, and a mounting hole 14 is formed in the center of each mounting convex block 13.
After the power supply is switched on, a controller in the oil outlet assembly 8 determines the phase change position of the brushless direct current motor by detecting three-phase back electromotive force of the motor, then controls inversion output, an inverter circuit outputs direct current chopped wave to a stator coil in the stator assembly to generate an electromagnetic field to form induced electromotive force, magnetic steel on the pump inner rotor assembly starts to rotate after sensing the electromagnetic field, so that the whole process of electric energy-magnetic energy-kinetic energy conversion is completed, the rotation of the rotor assembly drives a rotating wheel in the oil inlet assembly 4 to rotate at a high speed, the oil inlet assembly 4 starts to pump oil, and the one-way valve assembly 3 is opened to provide an oil inlet channel after power failure.
Example 3
As shown in fig. 1-6, an internal oil passing structure of a diesel pump comprises a filter screen assembly 2, a check valve assembly 3, an oil inlet assembly 4 and an oil pump motor 5 which are sequentially arranged in a casing 1 from bottom to top, wherein a cover 6 is fixed at the top of the casing 1, an oil cavity 7 is arranged at the bottom of the cover 6, an oil outlet assembly 8 is arranged at the top of the cover, a pressure release valve assembly 9 is arranged in the oil cavity 7, the check valve assembly 3 is fixed above the filter screen assembly 2 through a mounting seat 10, an oil inlet channel 11 is arranged on the mounting seat 10, the oil inlet channel 11 is communicated with an oil inlet of the oil inlet assembly 4, the check valve assembly 3 is communicated with an oil outlet of the oil inlet assembly 4, when the diesel pump is powered on, the check valve assembly 3 is closed, fluid enters the oil inlet assembly 4 from the oil inlet channel 11, and when the diesel pump is powered off, the check valve assembly 3 is opened, from the check valve assembly 3, the fluid enters the diesel pump.
And an oil passage 12 is arranged between the outer circles of the stators of the oil pump motor 5.
The top of the oil passage 12 is communicated with the oil chamber 7, and the bottom is communicated with the check valve component 3.
The oil passing channels 12 are 6 and are circumferentially and uniformly distributed.
At least two mounting convex blocks 13 which are uniformly distributed in the circumferential direction are fixed on the periphery of the cover 6, and a mounting hole 14 is formed in the center of each mounting convex block 13.
The fuel system is easy to remain gas and pressure for various reasons, especially for the fuel system of a diesel engine, the fuel pipeline forms air resistance once air enters due to compression ignition, the uniformity of fuel supply is influenced, the suction force is weakened and even cut-off occurs, and the diesel engine is difficult to start, insufficient in power or unstable in operation and even cannot start. The conventional methods such as a hand oil pump and a loose air release screw are adopted for air exhaust, but the methods are not easy to exhaust or can enter after the exhaust. The embodiment can remove residual gas and pressure of the mechanism and the oil supply system during starting, assist oil supply and supplement oil supply when the pump body works, and ensure uniformity of oil supply or adjustment of adaptation working conditions.
The internal oil passing structure of the invention provides two selectable use states: the first pump is in a pump working state, fuel enters the pump body from the oil inlet channel 11, is pressurized by the oil inlet assembly 4 and then is pumped out to provide fuel with certain pressure for the oil supply system; and the first state is a pump non-use state, fluid enters from the check valve assembly 3, enters the oil cavity through the oil passing channel 11 and the oil inlet assembly 4 and flows out through the oil outlet assembly 8, so that the exhaust of an oil supply system can be assisted, the residual pressure can be eliminated, the fluidity of fuel oil can be enhanced, particularly for diesel oil, heavy oil and the like with weak fluidity and the use in a low-temperature environment, the mechanism can be lubricated, the abrasion can be reduced, and the starting efficiency of the engine, particularly the cold starting efficiency can be improved.
The filter screen component 2 can be a metal filter screen or textile fabric and the like as a filter material, so that large particles, impurities and the like are prevented from entering the pump body, the cleanness of fluid is improved, and the loss of the mechanism is reduced.
After a power supply is switched on, a controller in the oil outlet assembly 8 determines the phase change position of the brushless direct current motor by detecting three-phase back electromotive force of the motor, then controls inversion output, an inverter circuit outputs direct current chopped wave to a stator coil in a stator assembly to generate an electromagnetic field to form induced electromotive force, magnetic steel on the pump inner rotor assembly starts to rotate after sensing the electromagnetism, so that the whole process of electric energy-magnetic energy-kinetic energy conversion is completed, the rotation of the rotor assembly drives a rotating wheel in the oil inlet assembly 4 to rotate at high speed, the oil inlet assembly 4 starts to pump oil, and the check valve assembly 3 is opened to provide an oil inlet channel after power failure.
Finally, it should be noted that the above-mentioned list is only a specific embodiment of the present invention. Obviously, the present invention is not limited to the above embodiments, and many modifications are possible. All modifications which can be derived or suggested by the person skilled in the art from the present disclosure are to be considered within the scope of the present invention.
Claims (6)
1. The internal oil passing structure of the diesel pump is characterized by comprising a filter screen assembly (2), a check valve assembly (3), an oil inlet assembly (4) and an oil pump motor (5) which are sequentially arranged in a casing (1) from bottom to top, wherein a cover (6) is fixed at the top of the casing (1), an oil cavity (7) is formed in the bottom of the cover (6), an oil outlet assembly (8) is arranged at the top of the cover (6), a pressure relief valve assembly (9) is arranged in the oil cavity (7), the check valve assembly (3) is fixed above the filter screen assembly (2) through a mounting seat (10), an oil inlet channel (11) is arranged on the mounting seat (10), the oil inlet channel (11) is communicated with an oil inlet of the oil inlet assembly (4), the check valve assembly (3) is communicated with an oil outlet of the oil inlet assembly (4), and the check valve assembly (3) is closed when the diesel pump is electrified, fluid gets into oil feed subassembly (4) from oil feed passageway (11), when the diesel pump outage, check valve subassembly (3) open, fluid gets into the diesel pump from check valve subassembly (3).
2. The internal oil passing structure of a diesel pump according to claim 1, wherein an oil passing channel (12) is provided at an outer circumference of a stator of the pump motor (5).
3. The internal oil passing structure of a diesel pump according to claim 2, wherein the top of the oil passing channel (12) is communicated with the oil chamber (7), and the bottom is communicated with the check valve assembly (3).
4. The internal oil passing structure of the diesel pump as claimed in claim 3, wherein the number of the oil passing channels (12) is 6, and the oil passing channels are circumferentially and uniformly distributed.
5. The internal oil passing structure of the diesel pump as claimed in claim 1, wherein the number of the check valve assemblies (3) is 4, the check valve assemblies are circumferentially arrayed on the mounting seat (10), the number of the oil inlet channels (11) is 5, wherein 1 oil inlet channel (11) is located in the center of the mounting seat (10), and the 4 oil inlet channels (11) and the check valve assemblies (3) are distributed on the mounting seat (10) at intervals.
6. The internal oil passing structure of the diesel pump according to claim 1, characterized in that at least two mounting lugs (13) are circumferentially and uniformly distributed and fixed on the periphery of the cover (6), and a mounting hole (14) is formed in the center of each mounting lug (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210421167.XA CN114718785B (en) | 2022-04-21 | 2022-04-21 | Internal oil passing structure of diesel pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210421167.XA CN114718785B (en) | 2022-04-21 | 2022-04-21 | Internal oil passing structure of diesel pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114718785A true CN114718785A (en) | 2022-07-08 |
| CN114718785B CN114718785B (en) | 2023-03-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210421167.XA Active CN114718785B (en) | 2022-04-21 | 2022-04-21 | Internal oil passing structure of diesel pump |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120294732A1 (en) * | 2011-05-17 | 2012-11-22 | Holley Performance Products | Pump System and Method of Use |
| CN207033625U (en) * | 2017-07-20 | 2018-02-23 | 瑞安市欧通汽车部件有限公司 | Diesel pump provided with filter |
| CN207315557U (en) * | 2017-11-02 | 2018-05-04 | 广西玉柴机器股份有限公司 | Electric fuel punp for diesel engine |
| JP2019015272A (en) * | 2017-07-10 | 2019-01-31 | 株式会社ミツバ | Fuel filter and fuel pump module |
| CN209724549U (en) * | 2019-03-22 | 2019-12-03 | 潍坊辰翔动力科技有限公司 | A kind of fuel filter assembly |
| CN113550848A (en) * | 2021-06-29 | 2021-10-26 | 无锡威孚高科技集团股份有限公司 | Diesel constant-flow brushless starting pump assembly and controller |
-
2022
- 2022-04-21 CN CN202210421167.XA patent/CN114718785B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120294732A1 (en) * | 2011-05-17 | 2012-11-22 | Holley Performance Products | Pump System and Method of Use |
| JP2019015272A (en) * | 2017-07-10 | 2019-01-31 | 株式会社ミツバ | Fuel filter and fuel pump module |
| CN207033625U (en) * | 2017-07-20 | 2018-02-23 | 瑞安市欧通汽车部件有限公司 | Diesel pump provided with filter |
| CN207315557U (en) * | 2017-11-02 | 2018-05-04 | 广西玉柴机器股份有限公司 | Electric fuel punp for diesel engine |
| CN209724549U (en) * | 2019-03-22 | 2019-12-03 | 潍坊辰翔动力科技有限公司 | A kind of fuel filter assembly |
| CN113550848A (en) * | 2021-06-29 | 2021-10-26 | 无锡威孚高科技集团股份有限公司 | Diesel constant-flow brushless starting pump assembly and controller |
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| Publication number | Publication date |
|---|---|
| CN114718785B (en) | 2023-03-24 |
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