CN206397633U - Electronic combination unit pump single cylinder oil feeding device - Google Patents
Electronic combination unit pump single cylinder oil feeding device Download PDFInfo
- Publication number
- CN206397633U CN206397633U CN201621433440.7U CN201621433440U CN206397633U CN 206397633 U CN206397633 U CN 206397633U CN 201621433440 U CN201621433440 U CN 201621433440U CN 206397633 U CN206397633 U CN 206397633U
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- oil
- pump
- fuel
- combination unit
- monomer
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Abstract
A kind of single cylinder oil feeding device of electronic combination unit pump disclosed in the utility model, including fuel tank, oil transfer pump, temperature sensor and some pressure maintaining valves, the entrance of the oil transfer pump is connected by the first oil pipe with the fuel tank, the outlet of the oil transfer pump is connected by the second oil pipe with the annular groove in the oil connection in six cylinder monomer pump parts in electronic combination unit pump, the annular groove in oil connection in each monomer pump part is connected by fuel inlet fitting with the low pressure chamber in the monomer pump part, and the temperature sensor is connected in second oil pipe；A pressure maintaining valve is connected with the end of second oil pipe, pressure maintaining valve is mounted in the low pressure chamber in each monomer pump part, all pressure maintaining valves are also connected by oil return pipe with fuel tank.The utility model can significantly improve temperature after the temperature consistency of each cylinder fuel oil oil inlet of injection pump, and the fuel oil coupling of high and low pressure system compared to traditional inside oil-feed mode, and also unanimously, and the cylinder number of injection pump is more, effect is more obvious.
Description
Technical field
The utility model is related to control combination of monomers pump technical field, and more particularly to a kind of single cylinder of electronic combination unit pump enters
Oily device.
Background technology
In order to adapt to increasingly strict diesel engine emissions laws and regulations requirement, a kind of the automatically controlled of single cylinder oil-feed mode is developed
Sundstrand pump fuel injection system.Because electronic compound pump is that the high-low pressure coupling fuel oil for integrating machinery, fluid power and electromagnetism sprays
System is penetrated, with higher injection pressure, its high pressure fuel injection temperature and low-voltage fuel oil temperature supplying have reacted system work
Thermic load characteristic, high pressure fuel injection temperature determine circulation oil spout quality, each cylinder high pressure fuel injector temperature uniformity influence follow
The uniformity of ring spray oil mass；Low-voltage fuel oil temperature supplying influences the oil suction fuel oil quality of high-pressure system, and then influences high-pressure injection
Characteristic.So by studying the single cylinder oil-feed mode of electronic compound pump with reach improve fuel oil temperature dynamic characteristic there is great meaning
Justice.
The content of the invention
Technical problem to be solved in the utility model is for being deposited during existing electronic combination unit pump oil-feed
Above-mentioned technical problem and the single cylinder oil feeding device of electronic combination unit pump a kind of is provided.
Technical problem to be solved in the utility model can be achieved through the following technical solutions：
A kind of single cylinder oil feeding device of electronic combination unit pump, including fuel tank, oil transfer pump, temperature sensor and some voltage stabilizings
Valve, the entrance of the oil transfer pump is connected by the first oil pipe with the fuel tank, the outlet of the oil transfer pump by the second oil pipe with
Oil in annular groove connection in oil connection in electronic combination unit pump in six cylinder monomer pump parts, each monomer pump part
Annular groove in pipe joint is connected by fuel inlet fitting with the low pressure chamber in the monomer pump part, and the temperature sensor is connected on
In second oil pipe；A pressure maintaining valve is connected with the end of second oil pipe, the low pressure chamber in each monomer pump part
On be mounted on pressure maintaining valve, all pressure maintaining valves are also connected by oil return pipe with fuel tank.
The course of work of the present utility model is as follows：
The fuel oil that oil transfer pump is pumped out is sequentially entered in electronic combination unit pump by the second oil pipe and temperature sensor
Annular groove in oil connection, then by annular groove by fuel inlet fitting enter each monomer pump part in low pressure chamber in, enter
Monomer pump part in fuel oil be low pressure oil, in the rotary course of camshaft, logical pressure compression plunger chamber makes fuel oil by low pressure
It is changed into after high pressure, fuel injector and diesel combustion chamber is entered to through pressure duct, and export power, completes reciprocation cycle.Work as pipe
Abnormal pressure oscillation in road can be back in fuel tank by pressure maintaining valve.
The utility model has the advantages that compared to prior art：
Traditional oil-feed mode is internal oil-feed mode, the fuel oil and monoblock pump of the low pressure chamber entered in monomer pump part
There is temperature difference in the unnecessary draining of the high pressure chest backflow in part, it is contemplated that the coupled characteristic of the fuel oil temperature of high and low pressure system,
Each cylinder of fuel oil temperature after coupling is different, and the temperature value that the temperature sensor monitors in low pressure oil way are arrived can not
Truly reflect each cylinder temperature, therefore its temperature-compensating can not reflect the integrated temperature of each cylinder.
The utility model can significantly improve the temperature of each cylinder fuel oil oil inlet of injection pump compared to traditional inside oil-feed mode
Temperature is also consistent after uniformity, and the fuel oil coupling of high and low pressure system, and the cylinder number of injection pump is more, and effect is more obvious.
And because high-pressure injection temperature is also influenceed by low-pressure system and fuel injection pulsewidth comprehensive function, therefore by improving low-pressure system i.e. list
The inlet oil temperature uniformity of body pump, and then can improve each cylinder high pressure fuel injector temperature under identical fuel injection pulsewidth and cam rotating speed
Uniformity.And the temperature of the density and fuel oil because of fuel oil is linearly, so as to reach by improving each cylinder high-pressure injection fuel oil
Temperature further can reach improve circulating fuel injection quantity under conditions of the identical fuel injection pulsewidth of each cylinder uniformity it is finally reachable
The performance faults such as the big, vibration of cigarette to reduction Diesel engine.
Brief description of the drawings
Fig. 1 is the structural representation of the single cylinder oil feeding device of the utility model electronic combination unit pump.
Embodiment
Referring to Fig. 1, a kind of single cylinder oil feeding device of the electronic combination unit pump provided in figure, including fuel tank 100, oil transfer pump
200th, temperature sensor 300 and some pressure maintaining valves 400, the entrance of oil transfer pump 200 are connected by the first oil pipe 210 with fuel tank 100,
The outlet of oil transfer pump 200 passes through the second oil pipe 210 and the oil connection in six cylinder monomer pump parts in electronic combination unit pump 500
In annular groove connection, the annular groove in oil connection in each monomer pump part 510 passes through fuel inlet fitting and the monoblock pump
Low pressure chamber connection in part 510, temperature sensor 300 is connected in the second oil pipe 210；Connect in the end of the second oil pipe 210
A pressure maintaining valve 400 is connected to, pressure maintaining valve 400, all pressure maintaining valves are mounted in the low pressure chamber in each monomer pump part 510
400 are also connected by oil return pipe 410 with fuel tank 100.
Claims (1)
1. the single cylinder oil feeding device of a kind of electronic combination unit pump, it is characterised in that including fuel tank, oil transfer pump, temperature sensor
With some pressure maintaining valves, the entrance of the oil transfer pump is connected by the first oil pipe with the fuel tank, and the outlet of the oil transfer pump passes through
Second oil pipe is connected with the annular groove in the oil connection in six cylinder monomer pump parts in electronic combination unit pump, each monoblock pump
The annular groove in oil connection in part is connected by fuel inlet fitting with the low pressure chamber in the monomer pump part, and the temperature is passed
Sensor is connected in second oil pipe；A pressure maintaining valve is connected with the end of second oil pipe, in each monomer pump part
In low pressure chamber on be mounted on pressure maintaining valve, all pressure maintaining valves are also connected by oil return pipe with fuel tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621433440.7U CN206397633U (en) | 2016-12-26 | 2016-12-26 | Electronic combination unit pump single cylinder oil feeding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621433440.7U CN206397633U (en) | 2016-12-26 | 2016-12-26 | Electronic combination unit pump single cylinder oil feeding device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206397633U true CN206397633U (en) | 2017-08-11 |
Family
ID=59510995
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621433440.7U Active CN206397633U (en) | 2016-12-26 | 2016-12-26 | Electronic combination unit pump single cylinder oil feeding device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206397633U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106677938A (en) * | 2016-12-26 | 2017-05-17 | 南岳电控（衡阳）工业技术股份有限公司 | Single-cylinder oil inlet device for electronic unit-pump combined pump |
-
2016
- 2016-12-26 CN CN201621433440.7U patent/CN206397633U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106677938A (en) * | 2016-12-26 | 2017-05-17 | 南岳电控（衡阳）工业技术股份有限公司 | Single-cylinder oil inlet device for electronic unit-pump combined pump |
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