CN203189175U - Fuel injection pump automatically exhausting entrained air in fuel injection pump - Google Patents
Fuel injection pump automatically exhausting entrained air in fuel injection pump Download PDFInfo
- Publication number
- CN203189175U CN203189175U CN 201320179348 CN201320179348U CN203189175U CN 203189175 U CN203189175 U CN 203189175U CN 201320179348 CN201320179348 CN 201320179348 CN 201320179348 U CN201320179348 U CN 201320179348U CN 203189175 U CN203189175 U CN 203189175U
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- injection pump
- oil
- fuel injection
- pump
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Abstract
The utility model relates to a diesel engine accessory fuel injection pump, in particular to a fuel injection pump automatically exhausting entrained air in the fuel injection pump. The fuel injection pump comprises a fuel injection pump body, an oil cavity and an oil inlet pipe. The oil cavity is formed in the fuel injection pump body, the oil inlet pipe is arranged on the outer wall of the fuel injection pump body and communicated with an oil tank (5), and the oil inlet pipe is further communicated with the oil cavity. An exhaust pipe is arranged on the outer wall of the fuel injection pump body and used for being communicated with a cavity above the liquid level in the oil tank. The fuel injection pump automatically exhausting the entrained air in the fuel injection pump has the advantages that when a diesel engine is started, air oil does not sneak into a supply air cylinder, the effect that the air sneaking into the fuel injection pump is exhausted automatically without manual operation is achieved, working efficiency is improved, and the failure rate of the diesel engine is reduced.
Description
Technical field
The utility model relates to the diesel engine part Injection Pump, specifically be a kind of when diesel engine starting the supply cylinder Injection Pump with entrained air in the automatic eliminating oil pump of entrained air fluid not.
Background technique
The application area of diesel engine is very wide, and as the Injection Pump of one of diesel engine critical piece, its effect is that certain fuel oil is fed cylinder with enough pressure in correct time, reaches the work requirements of starting.
At present, known monomer Injection Pump is driven by cam, comprises that plunger, plunger bushing, piston spring, delivery valve seat, outlet valve and oil outlet valve spring combine.When cam pushed up on the roller of roller body, plunger just rose.From move upward between plunger begins oilhole by the plunger upper-end surface block before till.In this section motion owing to plunger in the time, (being the oil suction chamber of Injection Pump) is extruded fuel oil from the grease chamber, flows to oil duct, and this section lift is pretravel.Just begin to press oily process when plunger blocks oilhole, namely plunger is up, and oil pressure sharply raises in the grease chamber.Just back down outlet valve when pressure surpasses the spring force of outlet valve and top oil pressure, fuel oil is pressed into oil pipe and delivers to oil sprayer.But, because the fuel oil entrained air of input Injection Pump pump chamber (when new diesel engine adds fuel oil, the oil consumption of diesel oil tank internal combustion to the greatest extent the time, when the debugging oil sprayer or when debugging whole Injection Pump in the transport pipe entrained air enter the oil suction chamber of Injection Pump), delivering in the fuel oil of oil sprayer also causes the firing chamber fuel feeding unusual entrained air, cause difficulty to diesel engine starting, even can't start.
Generally, the diesel engine operator emits the purpose that the diesel oil of air entrainment realizes discharging air by unclamping the Injection Pump oil inlet pipe; Enter cylinder inner fluid air content when needing right this method of employing that diesel engine starting can be reduced, can the normal starting motor, but the oil suction chamber of Injection Pump still has air, therefore, it is clean to adopt this method in full force and effect air not to be got rid of, and needs manually-operable.
At present, more be to pay close attention to its injection pressure for the diesel injection pump people, oil spout efficient and performance etc., and be the technical barrier that the industry is difficult to overcome all the time to the problem that entrained air in the Injection Pump causes diesel engine to be difficult to start.
In sum, the Injection Pump of prior art can't will sneak into air emptying in the oil-feed oil circuit, namely can't be when diesel engine starting the supply cylinder fluid of entrained air not.
Summary of the invention
The purpose of this utility model provide a kind of when diesel engine starting the supply cylinder Injection Pump with entrained air in the automatic eliminating oil pump of entrained air fluid not.
For realizing that the technological scheme that the utility model above-mentioned purpose adopts is: a kind of Injection Pump with entrained air in the automatic eliminating oil pump, comprise Injection Pump, be arranged on the oil pocket in the oil jet pump body, be arranged on the oil inlet pipe be communicated with fuel tank 5 of being used for of oil jet pump body outer wall, this oil inlet pipe also is communicated with oil pocket; Wherein: described oil jet pump body outer wall is provided with the outlet pipe that is communicated with for liquid level top cavity in the fuel tank.
Because said structure, the utility model has been realized when diesel engine starting not entrained air fluid of supply cylinder, has realized that the air that will sneak into oil pump automatically discharges, and need not manually to discharge air, has improved working efficiency and has reduced the rate of fault of diesel engine.
Description of drawings
The utility model can further specify by the indefiniteness embodiment that accompanying drawing provides.
Fig. 1 is structural representation of the present utility model.
Structural representation when Fig. 2 uses state for the utility model.
Among the figure: 1, Injection Pump; 2, oil pocket; 3, oil inlet pipe; 4, outlet pipe; 5, fuel tank; 6, cavity; 7, oil hose; 8, connecting tube; 9, connect flexible pipe.
Embodiment
The utility model is described in further detail below in conjunction with drawings and Examples:
Referring to accompanying drawing 1 to 2, a kind of Injection Pump with entrained air in the automatic eliminating oil pump comprises Injection Pump 1, is arranged on the oil pocket 2 in Injection Pump 1 pump housing, be arranged on the oil inlet pipe 3 be communicated with fuel tank 5 of being used for of Injection Pump 1 pump housing outer wall, this oil inlet pipe 3 also is communicated with oil pocket 2; Wherein: described Injection Pump 1 pump housing outer wall is provided with the outlet pipe 4 that is communicated with for liquid level top cavity 6 in the fuel tank 5.In this embodiment, outlet pipe 4, oil pocket 2, oil inlet pipe 3 and fuel tank 5 form the loop of connecting vessels working principle, when having air to sneak in the oil pocket 2 of Injection Pump 1, outlet pipe 4 one end pressures are less than the pressure of oil inlet pipe 3 fuel oil input ends, flow back under the air of the sneaking into pressure effect that fuel oil produces in fuel tank 5 in fuel tank 5 apex cavities 6, thereby air is discharged automatically, reach automatic eliminating and sneaked into the purpose of oil-fired system air, namely realized when diesel engine starting the not fluid of entrained air of supply cylinder.This structure Injection Pump can not only be discharged the air of sneaking into oil pump automatically, and can directly add fuel oil across-the-line starting diesel engine again in fuel tank 5 after fuel tank 5 intermediate fuel oils exhaust, and need not manually to discharge air.Improved the rate of fault of working efficiency and reduction diesel engine.
For ease of installing, in above-described embodiment, preferably: described oil inlet pipe 3 is communicated with fuel tank 5 by oil hose 7.
For ease of making and installing, in above-described embodiment, preferably: the casing of described fuel tank 5 is provided with connecting tube 8, and this connecting tube 8 is communicated with the cavity 6 of liquid levels top in the fuel tank 5 after passing the wall of fuel tank 5; And connecting tube 8 is communicated with outlet pipe 4 by connecting flexible pipe 9.
For further improving exhaust effect, in above-described embodiment, preferably: described outlet pipe 4 is provided with one-way valve, and the air in this one-way valve control oil pocket 2 is discharged from outlet pipe 4.
The described Injection Pump 1 of above-described embodiment is the existing market sell goods, no matter is that known monomer Injection Pump or binary Injection Pump all can adopt said structure to realize automatic vent.
Obviously, all embodiments of foregoing description are a part of embodiments of the present utility model, rather than whole embodiments.Based on embodiment of the present utility model, those of ordinary skills are not making all other embodiments that obtain under the creative work prerequisite, all belong to the category of the utility model protection.
In sum, this structure has realized when diesel engine starting not entrained air fluid of supply cylinder, has realized that the air that will sneak into oil pump automatically discharges, and need not manually to discharge air, has improved working efficiency and has reduced the rate of fault of diesel engine.
Claims (4)
1. Injection Pump with entrained air in the automatic eliminating oil pump, comprise Injection Pump (1), be arranged on the oil pocket (2) in Injection Pump (1) pump housing, be arranged on the oil inlet pipe (3) be communicated with fuel tank (5) of being used for of Injection Pump (1) pump housing outer wall, this oil inlet pipe (3) also is communicated with oil pocket (2); It is characterized in that: described Injection Pump (1) pump housing outer wall is provided with the outlet pipe (4) that is communicated with for the interior liquid level top cavity of fuel tank (5) (6).
2. the Injection Pump with entrained air in the automatic eliminating oil pump according to claim 1, it is characterized in that: described oil inlet pipe (3) is communicated with fuel tank (5) by oil hose (7).
3. the Injection Pump with entrained air in the automatic eliminating oil pump according to claim 1, it is characterized in that: the casing of described fuel tank (5) is provided with connecting tube (8), and this connecting tube (8) is communicated with the cavity (6) of the interior liquid level of fuel tank (5) top after passing the wall of fuel tank (5); And connecting tube (8) is communicated with outlet pipe (4) by connecting flexible pipe (9).
4. according to claim 1 or 3 described Injection Pumps with entrained air in the automatic eliminating oil pump, it is characterized in that: described outlet pipe (4) is provided with one-way valve, and the air in this one-way valve control oil pocket (2) is discharged from outlet pipe (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320179348 CN203189175U (en) | 2013-04-11 | 2013-04-11 | Fuel injection pump automatically exhausting entrained air in fuel injection pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320179348 CN203189175U (en) | 2013-04-11 | 2013-04-11 | Fuel injection pump automatically exhausting entrained air in fuel injection pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203189175U true CN203189175U (en) | 2013-09-11 |
Family
ID=49106039
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320179348 Expired - Fee Related CN203189175U (en) | 2013-04-11 | 2013-04-11 | Fuel injection pump automatically exhausting entrained air in fuel injection pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203189175U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103195631A (en) * | 2013-04-11 | 2013-07-10 | 重庆拓普柴油机厂 | Oil injection pump capable of automatically discharging air mixed in oil pump |
-
2013
- 2013-04-11 CN CN 201320179348 patent/CN203189175U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103195631A (en) * | 2013-04-11 | 2013-07-10 | 重庆拓普柴油机厂 | Oil injection pump capable of automatically discharging air mixed in oil pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130911 Termination date: 20160411 |