CN211737339U - Air removing structure of low-pressure fuel system of engine - Google Patents
Air removing structure of low-pressure fuel system of engine Download PDFInfo
- Publication number
- CN211737339U CN211737339U CN202020129474.7U CN202020129474U CN211737339U CN 211737339 U CN211737339 U CN 211737339U CN 202020129474 U CN202020129474 U CN 202020129474U CN 211737339 U CN211737339 U CN 211737339U
- Authority
- CN
- China
- Prior art keywords
- oil
- fuel
- engine
- over valve
- filter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
Abstract
The utility model relates to an engine low pressure fuel oil system air clearing structure, including main fuel tank, bellytank, oil feed change-over valve, fuel strainer, fuel fine filter, fuel injection pump, engine and oil return change-over valve, the oil-out of main fuel tank and bellytank passes through the pipe connection oil feed change-over valve, and the oil feed change-over valve passes through the oil inlet of pipe connection fuel strainer, and the oil-out of fuel strainer passes through the pipe connection fuel fine filter, and the oil-out of fuel fine filter passes through the pipe connection engine, and the engine passes through the pipe connection oil return change-over valve, and the oil return change-over valve passes through the oil inlet of pipe; an exhaust electric pump is arranged in the fuel oil coarse filter. The utility model discloses utilize the inside electric pump of fuel strainer with the air pump to the oil tank of engine low pressure oil circuit to avoided the harmful effects that the air caused in the engine low pressure oil circuit, can effectively improve engine start and dynamic property.
Description
Technical Field
The utility model relates to an engine low pressure fuel oil system air cleaning structure belongs to diesel engine oil feeding technical field.
Background
The improvement of the performance of the diesel engine for the vehicle inevitably causes further improvement and enhancement of a low-pressure oil supply system of the engine. Air in the low-pressure oil supply system of the engine can cause difficulty in starting the vehicle, and the vehicle cannot be started in severe cases, so that the air in the low-pressure oil supply system of the engine plays a crucial role in the performance of the diesel engine. Therefore, in order to ensure efficient and reliable operation of the low-pressure oil supply system, the functions of the system must be improved.
Disclosure of Invention
An object of the utility model is to overcome the not enough of existence among the prior art, provide an engine low pressure fuel oil system air cleaning structure for the air of initiatively forcing the exhaust possesses very strong advantage and market competition of arranging.
According to the utility model provides a technical scheme: an air removing structure of a low-pressure fuel system of an engine comprises a main fuel tank, an auxiliary fuel tank, a fuel inlet change-over valve, a fuel coarse filter, a fuel fine filter, a fuel injection pump, the engine and an oil return change-over valve, wherein an oil outlet of the main fuel tank and an oil outlet of the auxiliary fuel tank are connected with the fuel inlet change-over valve through pipelines;
the fuel oil coarse filter comprises a main shell, a lower end cover is arranged in the main shell, an upper cavity and a lower cavity are formed in the main shell by the lower end cover, the upper cavity is a filter cavity, the upper end of the lower end cover is provided with a filter element assembly, and the main shell is provided with an oil inlet communicated with the filter cavity; an exhaust cavity is separated in the cavity below the filter cavity, an exhaust electric pump is arranged in the exhaust cavity, and the output end of the exhaust electric pump is connected with an oil outlet; the middle part of the filter element assembly is provided with a first guide pipe, and the lower end of the first guide pipe penetrates through the lower end cover to be communicated with the exhaust cavity.
Furthermore, a second guide pipe is further arranged in the filter element assembly and is shorter than the first guide pipe, the outlet of the second guide pipe is connected with a one-way valve, and the outlet of the one-way valve is connected with an oil outlet.
Further, the oil inlet change-over valve and the oil return change-over valve are combined into a fuel change-over valve.
Further, the main oil tank is connected with the auxiliary oil tank in parallel.
Compared with the prior art, the utility model, have following advantage:
(1) the air in the low-pressure oil supply system of the engine can be actively removed.
(2) The electric pump in the fuel oil coarse filter is used for pumping air of the low-pressure oil way of the engine to the oil tank, so that adverse effects caused by air in the low-pressure oil way of the engine are avoided, and the starting and power performance of the engine can be effectively improved.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic structural diagram of a fuel strainer.
Description of reference numerals: 1-a main oil tank, 2-an auxiliary oil tank, 3-an oil inlet change-over valve, 4-a fuel oil coarse filter, 5-a fuel oil fine filter, 6-a fuel oil injection pump, 7-an engine, 8-an oil return change-over valve, 9-a fuel oil change-over valve, 41-a main shell, 42-a lower end cover, 43-a filter element assembly, 44-an oil inlet, 45-a filter cavity, 46-an exhaust cavity, 47-an exhaust electric pump, 48-an oil outlet, 49-a first conduit, 410-a second conduit and 411-a one-way valve.
Detailed Description
The present invention and embodiments will be further described with reference to the accompanying drawings.
As shown in fig. 1, an air scavenging structure of a low-pressure fuel system of an engine comprises a main fuel tank 1, an auxiliary fuel tank 2, an oil inlet change-over valve 3, a fuel coarse filter 4, a fuel fine filter 5, a fuel injection pump 6, an engine 7 and an oil return change-over valve 8, wherein oil outlets of the main fuel tank 1 and the auxiliary fuel tank 2 are connected with the oil inlet change-over valve 3 through a pipeline, the oil inlet change-over valve 3 is connected with an oil inlet of the fuel coarse filter 4 through a pipeline, an oil outlet of the fuel coarse filter 4 is connected with the fuel fine filter 5 through a pipeline, an oil outlet of the fuel fine filter 5 is connected with the engine 7 through a pipeline, the engine 7 is connected with the oil return change-over valve 8 through;
as shown in fig. 2, the fuel oil coarse filter 4 includes a main housing 41, a lower end cover 42 is disposed in the main housing 41, the lower end cover 42 forms an upper cavity and a lower cavity in the main housing 41, the upper cavity is a filter cavity 45, a filter element assembly 43 is disposed at an upper end of the lower end cover 42, and an oil inlet 44 communicated with the filter cavity 45 is disposed on the main housing 41; an exhaust cavity 46 is partitioned in the cavity below the filter cavity 45, an exhaust electric pump 47 is arranged in the exhaust cavity 46, and the output end of the exhaust electric pump 47 is connected with an oil outlet 48; the filter element assembly 43 is provided with a first conduit 49 at the middle part, and the lower end of the first conduit 49 passes through the lower end cover 42 and is communicated with the exhaust cavity 46.
The filter element assembly 43 is also provided with a second conduit 410, the second conduit 410 is shorter than the first conduit 49, the outlet of the second conduit 410 is connected with a one-way valve 411, and the outlet of the one-way valve 411 is connected with the oil outlet 48.
The oil inlet change-over valve 3 and the oil return change-over valve 8 are combined into a fuel change-over valve 9.
The main oil tank 1 is connected with the auxiliary oil tank 2 in parallel, and an oil inlet conversion valve 3 is arranged at an outlet of the main oil tank, so that the system can adapt to different environmental temperatures and working conditions, and the fuel cost is saved.
An exhaust electric pump 47 is provided in the fuel strainer 4, and the exhaust electric pump can make the fuel or air in the low-pressure oil path flow. The main oil tank 1, the auxiliary oil tank 2, the oil inlet change-over valve 3, the fuel coarse filter 4, the fuel fine filter 5, the fuel injection pump 6, the engine 7 and the oil return change-over valve 8 form a low-pressure fuel system loop of the engine.
The utility model discloses at first open the ignition switch and supply power for exhaust electric pump 47 to utilize exhaust electric pump 47 can take out the air in 4 front end main fuel tanks 1 of fuel coarse filter, bellytank 2, the oil feed change-over valve 3 in the fuel coarse filter 4, later pump to engine 7, return to main fuel tank 1, bellytank 2 by engine 7 oil return pipeline again.
It is to be understood that the above embodiments are merely exemplary embodiments that have been employed to illustrate the principles of the present invention, and that the present invention is not limited thereto. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit and substance of the invention, and these modifications and improvements are also considered to be within the scope of the invention.
Claims (4)
1. An air scavenging structure of a low-pressure fuel system of an engine is characterized by comprising a main oil tank (1), an auxiliary oil tank (2), an oil inlet change-over valve (3), a fuel coarse filter (4), a fuel fine filter (5), a fuel injection pump (6), the engine (7) and an oil return change-over valve (8), the oil inlet conversion valve (3) is connected with the oil outlets of the main oil tank (1) and the auxiliary oil tank (2) through pipelines, the oil inlet conversion valve (3) is connected with the oil inlet of the fuel coarse filter (4) through a pipeline, the oil outlet of the fuel coarse filter (4) is connected with the fuel fine filter (5) through a pipeline, the oil outlet of the fuel fine filter (5) is connected with the engine (7) through a pipeline, the engine (7) is connected with the oil return conversion valve (8) through a pipeline, and the oil return conversion valve (8) is connected with the oil inlets of the main oil tank (1) and the auxiliary oil tank (;
the fuel oil coarse filter (4) comprises a main shell (41), a lower end cover (42) is arranged in the main shell (41), the lower end cover (42) forms an upper cavity and a lower cavity in the main shell (41), the upper cavity is a filter cavity (45), the upper end of the lower end cover (42) is provided with a filter element assembly (43), and the main shell (41) is provided with an oil inlet (44) communicated with the filter cavity (45); an exhaust cavity (46) is partitioned in the cavity below the filter cavity (45), an exhaust electric pump (47) is arranged in the exhaust cavity (46), and the output end of the exhaust electric pump (47) is connected with an oil outlet (48); the middle part of the filter element assembly (43) is provided with a first conduit (49), and the lower end of the first conduit (49) passes through the lower end cover (42) to be communicated with the exhaust cavity (46).
2. The air scavenging structure of the low-pressure fuel system of the engine as claimed in claim 1, wherein a second conduit (410) is further arranged in the filter element assembly (43), the second conduit (410) is shorter than the first conduit (49), the outlet of the second conduit (410) is connected with a one-way valve (411), and the outlet of the one-way valve (411) is connected with the oil outlet (48).
3. The engine low-pressure fuel system air purge structure according to claim 1, wherein the oil feed change-over valve (3) and the oil return change-over valve (8) are combined into a fuel change-over valve (9).
4. The engine low-pressure fuel system air purge structure as claimed in claim 1, wherein the main fuel tank (1) is connected in parallel with the sub fuel tank (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020129474.7U CN211737339U (en) | 2020-01-20 | 2020-01-20 | Air removing structure of low-pressure fuel system of engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020129474.7U CN211737339U (en) | 2020-01-20 | 2020-01-20 | Air removing structure of low-pressure fuel system of engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211737339U true CN211737339U (en) | 2020-10-23 |
Family
ID=72880234
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020129474.7U Active CN211737339U (en) | 2020-01-20 | 2020-01-20 | Air removing structure of low-pressure fuel system of engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211737339U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113482816A (en) * | 2021-08-16 | 2021-10-08 | 一汽解放汽车有限公司 | Fuel filter |
-
2020
- 2020-01-20 CN CN202020129474.7U patent/CN211737339U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113482816A (en) * | 2021-08-16 | 2021-10-08 | 一汽解放汽车有限公司 | Fuel filter |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105508107A (en) | Integrated high-pressure oil pump assembly for high-pressure common-rail fuel injection system of diesel engine | |
| CN211737339U (en) | Air removing structure of low-pressure fuel system of engine | |
| CN209179912U (en) | Engine fuel oil system and engine | |
| CN107956612A (en) | A kind of integrated type fuel oil prefilter pump oil exhaust structure | |
| CN102588171B (en) | Electric control exhaust diesel filter | |
| RU2031238C1 (en) | System for two-time supplying of fuel to diesel engine | |
| CN205315181U (en) | Integrated form diesel engine high pressure common rail fuel injection high -pressure oil pump assembly for system | |
| CN211598884U (en) | Module integrated type fuel prefilter assembly structure | |
| CN214221382U (en) | Single-cylinder common-rail oil supply pump of blade-mounted oil transfer pump | |
| CN109083784A (en) | Prevent the diesel fuel filter of engine start difficulty | |
| CN208253538U (en) | A kind of vehicular engine exhaust heat recovery system | |
| CN201696191U (en) | Fuel oil supply device of light-duty truck | |
| CN112648120A (en) | Single-cylinder common-rail oil supply pump of blade-mounted oil transfer pump | |
| CN111963341B (en) | Leak-proof carburetor of automobile engine | |
| CN111535962A (en) | Heavy diesel engine high pressure common rail fuel system | |
| CN201137786Y (en) | Hermetic pipeline liquid injecting device | |
| CN215408941U (en) | Fuel filter's exhaust structure | |
| CN207813800U (en) | A kind of eductor for fuel oil pump assembly | |
| CN216974954U (en) | Multi-fluid joint for diesel engine | |
| CN214403824U (en) | External oil pump type small gasoline tank for motorcycle fault diagnosis | |
| CN210599231U (en) | Forklift fuel system | |
| CN209011972U (en) | Engine device for rapidly starting | |
| CN220470093U (en) | Exhaust and oil supply system with double filters | |
| CN217129668U (en) | Double-oil-pump fuel pump assembly with oil absorption function for saddle-shaped oil tank | |
| CN218934596U (en) | Degassing fuel-saving diesel filter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |