CN205349580U - Diesel engine starts emptying devices - Google Patents
Diesel engine starts emptying devices Download PDFInfo
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- CN205349580U CN205349580U CN201521120459.1U CN201521120459U CN205349580U CN 205349580 U CN205349580 U CN 205349580U CN 201521120459 U CN201521120459 U CN 201521120459U CN 205349580 U CN205349580 U CN 205349580U
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- electrically operated
- fuel pump
- diesel engine
- operated fuel
- containing cavity
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Abstract
The utility model discloses a diesel engine starts emptying devices, including linking bridge, electric fuel delivery pump and check valve subassembly, linking bridge is equipped with oil inlet, goes out oil pipe and electric fuel delivery pump holding chamber, and electric fuel delivery pump sets up at electric fuel delivery pump holding intracavity, oil inlet and electric fuel delivery pump holding chamber intercommunication, its characteristics lie in, go out oil pipe and include a lumen, and the lumen has two input ports and a delivery outlet, two input ports all with electric fuel delivery pump holding chamber intercommunication, the check valve subassembly sets up in the lumen to be located one of them input port with between the delivery outlet. The utility model discloses compare with current automatic emptying devices, the structure is compacter, and it is littleer to install shared space.
Description
Technical field
This utility model relates to the device under a kind of Diesel engine low rate start state with automatic-discharging function.
Background technology
Along with the enhancing that reinforcement and mankind's environmental protection of greenhouse effect look like, the motor vehicle exhaust emission impact on air or even environment for human survival is increasingly paid close attention in the whole world, and country variant has formulated different motor vehicle exhaust emission regulations according to the practical situation of various countries.China has realized in 2015 since state IV Abgasgesetz, has improved constantly automobile exhaust emission standard.And at present popular in the world and what very easily promote is adopt fuel oil high pressure co-rail system, raising fuel-injection pressure, make fuel oil reach abundant atomizing effect so that it is fully to burn in engine cylinder body, reduce the discharge of tail gas of fuel harmful substance.
And high pressure co-rail system is while improving fuel-injection pressure, under low engine speed starting state or under cryogenic conditions, low pressure oil way tends not to automatic-discharging, cause engine start shakiness, difficulty in starting or stop working suddenly, reduce vehicle driver and crew's operation comfort and discharge index, it is therefore desirable to a device under low engine speed starting state with automatic-discharging function.And existing automatic emptier often mounting structure is more complicated, shared volume is also relatively larger.
Summary of the invention
Technical problem to be solved in the utility model is in that to overcome the drawbacks described above of prior art, it is provided that a kind of volume is little, the Diesel engine of compact conformation starts emptier.
For solving above-mentioned technical problem, this utility model be the technical scheme is that
A kind of Diesel engine starts emptier, including connecting support, electrically operated fuel pump and check valve assembly；Connecting support and be provided with oiler, flowline and electrically operated fuel pump containing cavity, electrically operated fuel pump is arranged in electrically operated fuel pump containing cavity, and oiler connects with electrically operated fuel pump containing cavity；It is characterized in that, flowline includes a tube chamber, and tube chamber has two input ports and a delivery outlet；Two input ports all connect with electrically operated fuel pump containing cavity, and check valve assembly is arranged in tube chamber, and are located in one of between input port and described delivery outlet.
Above-mentioned a kind of Diesel engine starts emptier, and wherein, check valve assembly includes the spool, spring and the joint that are arranged in check valve containing cavity；Spring is between spool and joint, and applies the elastic force of one of them described input port of a closedown to spool；Joint is fixed in delivery outlet, and this joint has oil hole, goes out oil hole and connects with another input port described.
Above-mentioned a kind of Diesel engine starts emptier, wherein, and spool and be arranged with O RunddichtringO on joint respectively.
Above-mentioned a kind of Diesel engine starts emptier, wherein, connects support and includes rack body and end cap, and oiler, flowline and electrically operated fuel pump containing cavity are arranged on rack body；Electrically operated fuel pump containing cavity has a blind end and an opening, and end cap covers described opening, and detachably connected by multiple threaded fasteners with rack body.
Above-mentioned a kind of Diesel engine starts emptier, wherein, connects support and is bolted on the cylinder wall being fixed on Diesel engine.
Above-mentioned a kind of Diesel engine starts emptier, and wherein, one of them input port is arranged on the sidewall of electrically operated fuel pump containing cavity, and another input port is connected with electrically operated fuel pump containing cavity by pipeline.
After adopting technique scheme so that this utility model at least has the advantage that
1. this utility model directly installs check valve assembly in the flowline connecting support, eliminate the valve body of check valve, one is provided for housing the die cavity of check valve assembly without special, thus simplifying check valve and connecting the structure of support, save material, reduce small product size, make product structure compacter；
2. this utility model can ensure that electric-control diesel engine normally starts under cryogenic, and can empty electric-control diesel engine and enter into the air in low-voltage fuel pipeline when long-term parking and fuel system maintenance；When electrically operated fuel pump starts, Diesel engine coarse cleaner the fuel oil flowed into supplies the low pressure gear pump of high-pressure common-rail injection system either directly through electrically operated fuel pump；When electrically operated fuel pump stops, Diesel engine coarse cleaner the fuel oil flowed into is either directly through bypass oil duct supply low pressure gear pump, and therefore, no matter electrically operated fuel pump start and stop, the low pressure gear pump of high-pressure common-rail injection system all continues to obtain oil sources.
Accompanying drawing explanation
Fig. 1 is the overall structure schematic diagram that a kind of Diesel engine according to this utility model one embodiment starts emptier.
Fig. 2 is the explosive view that a kind of Diesel engine according to this utility model one embodiment starts emptier.
Fig. 3 illustrates that a kind of Diesel engine according to this utility model one embodiment starts the fuel oil flow graph when electrically operated fuel pump of emptier is in opening.
Fig. 4 illustrates that a kind of Diesel engine according to this utility model one embodiment starts the fuel oil flow graph when electrically operated fuel pump of emptier is in halted state.
Detailed description of the invention
Below in conjunction with accompanying drawing this utility model made and further illustrating.
Referring to figs. 1 to Fig. 4.A kind of Diesel engine according to this utility model one embodiment starts emptier and includes connecting support 1, electrically operated fuel pump 2 and check valve assembly 3.
Connect support 1 and include rack body 1a and end cap 1b.Rack body 1a is provided with oiler 10, flowline 11 and electrically operated fuel pump containing cavity 12.Electrically operated fuel pump 2 is arranged in electrically operated fuel pump containing cavity 12, and electrically operated fuel pump containing cavity 12 has a blind end and an opening, and end cap 1b covers opening, and is detachably interconnected by multiple threaded fasteners 41 with rack body 1a.This threaded fastener 41 can be such as tapping screw.The housing of electrically operated fuel pump 2 is arranged with O RunddichtringO 21.Connect support 1 can be bolted on the cylinder wall being fixed on Diesel engine.
Oiler 11 connects with electrically operated fuel pump containing cavity 2.Flowline 12 includes a tube chamber 13, and tube chamber 13 has 131,132 and one, two input ports delivery outlet 133, and these two input ports 131,132 all connect with electrically operated fuel pump containing cavity 12.One of them input port 131 is arranged on the sidewall of electrically operated fuel pump containing cavity 12, and check valve assembly 3 is arranged in tube chamber 13, and is located in one of between input port 131 and delivery outlet 133.Another input port 132 is connected with electrically operated fuel pump containing cavity 2 by pipeline 14.Check valve assembly 3 allows fuel oil to be flowed to delivery outlet 133 by input port 131.Check valve assembly 3 includes the spool 32, spring 33 and the joint 35 that are arranged in tube chamber 13.Spring 33 is between spool 32 and joint 35, and applies the elastic force of one of them input port 131 of a closedown to spool 32.Spool 32 is arranged with O RunddichtringO 31, joint 35 is arranged with O RunddichtringO 34.Joint 35 is fixed in delivery outlet 133, and this joint 35 has oil hole 351, goes out oil hole 351 and connects with another input port 132, so that the fuel oil flowing into tube chamber 13 from another input port 132 can flow out from going out oil hole 351.
The work process that Diesel engine according to this utility model one embodiment starts emptier is as follows:
When electrically operated fuel pump 2 opens work, forming a pressure reduction at check valve assembly 3 two ends, cause that check valve assembly 3 plays the effect of damming, fuel oil flows to as indicated by the arrows in fig. 3.Fuel oil sequentially passes through oiler 10, electrically operated fuel pump 2, the input port 132 of tube chamber 13, delivery outlet 133, then from the common rail system going out oil hole 351 and being fed to electromotor.In the process, check valve assembly 3 can play the unidirectional effect of damming, and fuel oil is without check valve assembly.After electromotor normally starts, electrically operated fuel pump 2 quits work, and the flow path of fuel oil is as shown by the arrows in figure 4.Fuel oil sequentially passes through oiler 10, the input port 131 of tube chamber 13, delivery outlet 133, then from the common rail system going out oil hole 351 and being fed to electromotor.
This utility model is compared with existing automatic emptier, and structure is compacter, installs shared space less.
Claims (6)
1. Diesel engine starts an emptier, including connecting support, electrically operated fuel pump and check valve assembly；Described connection support is provided with oiler, flowline and electrically operated fuel pump containing cavity, and described electrically operated fuel pump is arranged in described electrically operated fuel pump containing cavity, and described oiler connects with described electrically operated fuel pump containing cavity；It is characterized in that, described flowline includes a tube chamber, and described tube chamber has two input ports and a delivery outlet；Said two input port all connects with described electrically operated fuel pump containing cavity, and described check valve assembly is arranged in described tube chamber, and is located in one of between input port and described delivery outlet.
2. a kind of Diesel engine as claimed in claim 1 starts emptier, it is characterised in that described check valve assembly includes the spool, spring and the joint that are arranged in check valve containing cavity；Described spring is between spool and joint, and applies the elastic force of one of them described input port of a closedown to spool；
Described joint is fixed in described delivery outlet, and this joint has oil hole, described in go out oil hole and connect with another input port described.
3. a kind of Diesel engine as claimed in claim 2 starts emptier, it is characterised in that be arranged with O RunddichtringO on described spool and joint respectively.
4. a kind of Diesel engine as claimed in claim 1 starts emptier, it is characterised in that described connection support includes rack body and end cap, and described oiler, flowline and electrically operated fuel pump containing cavity are arranged on described rack body；Described electrically operated fuel pump containing cavity has a blind end and an opening, and described end cap covers described opening, and detachably connected by multiple threaded fasteners with described rack body.
5. a kind of Diesel engine as claimed in claim 1 starts emptier, it is characterised in that the described support that connects is bolted on the cylinder wall being fixed on Diesel engine.
6. a kind of Diesel engine as claimed in claim 1 starts emptier, it is characterized in that, one of them input port described is arranged on the sidewall of described electrically operated fuel pump containing cavity, and another input port described is connected with described electrically operated fuel pump containing cavity by pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521120459.1U CN205349580U (en) | 2015-12-30 | 2015-12-30 | Diesel engine starts emptying devices |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521120459.1U CN205349580U (en) | 2015-12-30 | 2015-12-30 | Diesel engine starts emptying devices |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205349580U true CN205349580U (en) | 2016-06-29 |
Family
ID=56171117
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521120459.1U Active CN205349580U (en) | 2015-12-30 | 2015-12-30 | Diesel engine starts emptying devices |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205349580U (en) |
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2015
- 2015-12-30 CN CN201521120459.1U patent/CN205349580U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |