CN202300761U - Oil return pipe of injection pump of engine - Google Patents
Oil return pipe of injection pump of engine Download PDFInfo
- Publication number
- CN202300761U CN202300761U CN2011203752346U CN201120375234U CN202300761U CN 202300761 U CN202300761 U CN 202300761U CN 2011203752346 U CN2011203752346 U CN 2011203752346U CN 201120375234 U CN201120375234 U CN 201120375234U CN 202300761 U CN202300761 U CN 202300761U
- Authority
- CN
- China
- Prior art keywords
- oil
- injection pump
- pipe
- engine
- oil pipe
- 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.)
- Expired - Fee Related
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- Fuel-Injection Apparatus (AREA)
Abstract
The utility model discloses an oil return pipe of an injection pump of an engine, which comprises an oil pipe led out upwards through an oil return hole of the injection pump and an oil tank connecting pipe connected with the oil pipe. The oil return pipe of an oil injection device is connected through a connecting position of the oil pipe and the oil tank connecting pipe. Due to the fact that the oil pipe led out upwards through the oil return hole of the oil injection pump is added on the oil return pipe of the oil injection pump of the engine, partial return oil can be remained in the oil pipe throughout to seal the oil pipe in an oil returning process of the oil injection pump. Therefore, the oil return pipe of the oil injection device can not be connected into the oil return hole of the oil injection pump directly, and air in the oil return pipe of the oil injection device is prevented from entering the oil injection pump of the engine. Accordingly, oil pumping performance of the oil injection pump is not affected, and starting of the engine is not affected.
Description
Technical field
The utility model relates to engine art, particularly a kind of injection pump of engine return tube.
Background technique
In the existing technology, the fuel pipe of motor comes design arrangement oil pipe trend according to attractive in appearance usually.The return tube of oil sprayer is connected to the injection pump of engine spill port earlier, and then flows back to oil sump tank with the oil return of Injection Pump together through a pipeline, because the return tube of oil sprayer is long; Because self is poorly sealed with coupled other pipelines, parts; Be mixed with air in the oil circuit that causes oil sprayer to reflux, and access port is set directly at Injection Pump spill port place, the air that is mixed with in the oil circuit that causes oil sprayer to reflux is easily pressed people's Injection Pump; The pump oiliness that influences Injection Pump can; And then phenomenon such as difficult startups of motor appears, and also can cause the rail pressure shakiness of pipeline, influence the ride quality of motor.
The model utility content
The air that the technical problem that the utility model solves provides in a kind of return tube that prevents oil sprayer gets into injection pump of engine, influence the injection pump of engine return tube of the pump oiliness ability of Injection Pump.
For achieving the above object, a kind of injection pump of engine return tube that the utility model provides comprises: the oil pipe by the Injection Pump spill port is upwards drawn is taken over the fuel tank that is connected with oil pipe, and the return tube of oil sprayer is inserted by the joint that oil pipe and fuel tank are taken over.
Further, oil pipe is drawn by the Injection Pump spill port straight up.
Further, the upper end of oil pipe is equipped with tee union, and fuel tank is taken over and is connected with said oil pipe through tee union with the return tube of oil sprayer.
Technological scheme according to the utility model; Owing on the injection pump of engine return tube, increased the oil pipe that makes progress by the Injection Pump spill port; All the time can the reserve part oil return seal this oil pipe in this oil pipe in the Injection Pump oil return process, make the return tube of oil sprayer can not directly insert the Injection Pump spill port, prevent that the air in the return tube of oil sprayer from getting into injection pump of engine; And influence Injection Pump the pump oiliness can, and then influence the startup of motor.
Description of drawings
Fig. 1 is the structural representation according to the injection pump of engine return tube of the utility model.
Embodiment
Below in conjunction with accompanying drawing, the embodiment of the utility model is described in detail, but the protection domain that is to be understood that the utility model does not receive the restriction of embodiment.
Referring to Fig. 1; This injection pump of engine return tube comprises: one section oil pipe 1 by the Injection Pump spill port is upwards drawn takes over 2 with the fuel tank that is connected with this oil pipe 1; The lower end of oil pipe 1 is equipped with connecting bolt 11, is used for this oil pipe 1 is connected to the Injection Pump spill port, and the upper end of oil pipe 1 is equipped with tee union 12; The left end of tee union 12 connects fuel tank and takes over 2, and right-hand member connects the return tube 3 of oil sprayer.Oil pipe 1 can be drawn by the Injection Pump spill port straight up, thereby reduces the cantilever of upper end tee union 12, increases the reliability that oil circuit connects.
The oil return that the oil pipe 1 of the oil return of injection pump of engine through this Injection Pump return tube flows upward in the return tube 3 of tee union 12 and oily device converges, and takes over 2 through fuel tank together then and flows back to the fuel tank (not shown).The part that the oil return of injection pump of engine only rises to tee union 12 just can be back to fuel tank, and still reserve part oil return in the oil pipe 1 that makes progress is because this part oil return is to the sealing of oil pipe 1; Make the air in the return tube 3 of oil sprayer not get into injection pump of engine through oil pipe 1; In addition, the trend of oil pipe 1 is made progress by the Injection Pump spill port, and the density of the air ratio fuel oil in the return tube 3 of oil sprayer is little; Make air upwards compile and can not pass through oil pipe 1 and get into injection pump of engine; Prevented that the air in the return tube of oil sprayer from getting into injection pump of engine, and influence the pump oiliness ability of Injection Pump, and then influenced the startup of motor.
More than a disclosed specific embodiment that is merely the utility model, still, the utility model is not limited thereto, any those skilled in the art can think variation all should fall into the protection domain of the utility model.
Claims (3)
1. an injection pump of engine return tube is characterized in that, comprising: the oil pipe by the Injection Pump spill port is upwards drawn is taken over the fuel tank that is connected with said oil pipe, and the return tube of oil sprayer is inserted by the joint that said oil pipe and fuel tank are taken over.
2. injection pump of engine return tube according to claim 1 is characterized in that said oil pipe is drawn by the Injection Pump spill port straight up.
3. injection pump of engine return tube according to claim 1 and 2 is characterized in that the upper end of said oil pipe is equipped with tee union, and said fuel tank is taken over and is connected with said oil pipe through said tee union with the return tube of oil sprayer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203752346U CN202300761U (en) | 2011-09-30 | 2011-09-30 | Oil return pipe of injection pump of engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203752346U CN202300761U (en) | 2011-09-30 | 2011-09-30 | Oil return pipe of injection pump of engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202300761U true CN202300761U (en) | 2012-07-04 |
Family
ID=46369672
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203752346U Expired - Fee Related CN202300761U (en) | 2011-09-30 | 2011-09-30 | Oil return pipe of injection pump of engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202300761U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104234882A (en) * | 2014-08-21 | 2014-12-24 | 内蒙古欧意德发动机有限公司 | Oil return pipe assembly |
-
2011
- 2011-09-30 CN CN2011203752346U patent/CN202300761U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104234882A (en) * | 2014-08-21 | 2014-12-24 | 内蒙古欧意德发动机有限公司 | Oil return pipe assembly |
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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: 20120704 Termination date: 20160930 |