CN209163972U - The diesel fuel supply system of in-line large scale multi-cylinder diesel engine - Google Patents
The diesel fuel supply system of in-line large scale multi-cylinder diesel engine Download PDFInfo
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- CN209163972U CN209163972U CN201920002058.8U CN201920002058U CN209163972U CN 209163972 U CN209163972 U CN 209163972U CN 201920002058 U CN201920002058 U CN 201920002058U CN 209163972 U CN209163972 U CN 209163972U
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Abstract
The utility model discloses a kind of diesel fuel supply systems of in-line large scale multi-cylinder diesel engine, comprising: prefilter is connected to fuel tank；One end of petroleum pipeline is connected to prefilter；Oil transfer pump is connected to the other end of petroleum pipeline；One end of oil inlet pipe is connected to oil transfer pump；Filter is connected to the other end of oil inlet pipe；One end of flowline is connected to filter；High-pressure fuel-feed pump is connected to the other end of flowline；One end of oily rail pipe is connected to high-pressure fuel-feed pump；One of multiple transit joints are connected to the other end of oily rail pipe；Each one end of more high-pressure oil pipes is connected to a transit joint, and the other end is connected to a fuel injector；And more high-pressure connecting pipes, it is connected to by a high-pressure connecting pipe between two adjacent transit joints, so that multiple transit joints form series winding connection by more high-pressure connecting pipes.Whereby, by using electronic control common rail system, distributive value and injection timing is made to can reach full working scope control, fuel injection characteristic can also directly control.
Description
Technical field
The utility model is to supply field about engine fuel, especially with regard to a kind of in-line large scale multi-cylinder diesel engine
High pressure co-rail system.
Background technique
In face of an urgent demand of world wide energy-saving emission reduction, diesel engine must further improve combustion process, and fuel oil
The performance of spraying system is to determine the key factor of combustion process.Compared to tradition machinery pump and electronically controlled unit pump, high-pressure common rail combustion
Oil spurts technology injection pressure with higher and injection pressure can be adjusted flexibly according to operating condition, injection timing and distributive value
Accurate control is able to achieve, it can be achieved that multi-injection.Therefore, Electrocontrolled high-pressure common rail is the certainty of diesel engine fuel jetting technology development
Trend.
There are following defects for the diesel fuel supply system of existing array large scale multi-cylinder diesel engine:
Present in-line large scale multi-cylinder diesel engine generally matches hydraulic injection device using the in-line mechanical pump of tradition, or using electricity
It controls monoblock pump and matches hydraulic injection device.
For matching hydraulic injection device scheme using in-line mechanical pump, because can not achieve to the accurate of injection timing and distributive value
Control, is not able to satisfy the demand of more maximum discharge grade.The in-line corresponding cylinder of each plunger of mechanical pump.
For matching hydraulic injection device scheme using electronically controlled unit pump, has a distinct increment on the basis of mechanical pump, can control spray
Oily timing and distributive value have some superiority, however each cylinder corresponds to an electronically controlled unit pump.
Using Electrocontrolled high-pressure common rail scheme, distributive value and injection timing can full working scope control, fuel injection characteristic can directly control,
Multi-injection may be implemented.
High pressure co-rail system is generally made of high-pressure fuel-feed pump, Pressure energy accumulator, fuel injector and ECU.
For the common rail system of in-line large scale multi-cylinder diesel engine, because the length of engine is longer, the high pressure needed to configure is total
Rail pipe is just very long, and common rail pipe production has certain difficulty, is simutaneously arranged also unsightly.
Therefore, pressure accumulation chamber is set on high-pressure fuel-feed pump and fuel injector, is equivalent to the pressure accumulation chamber transfer on common rail pipe
Onto high-pressure fuel-feed pump and fuel injector.
The information disclosed in the background technology section is intended only to increase the understanding to the general background of the utility model, and
It is not construed as recognizing or implying in any form that information composition is already known to those of ordinary skill in the art existing
Technology.
Utility model content
The purpose of this utility model is to provide a kind of diesel fuel supply systems of in-line large scale multi-cylinder diesel engine, by making
With electronic control common rail system, distributive value and injection timing is made to can reach full working scope control, fuel injection characteristic can also be directly controlled, is able to achieve
Multi-injection, and realize lower combustion noise and oil consumption.
To achieve the above object, the utility model provides a kind of diesel fuel supply system of in-line large scale multi-cylinder diesel engine,
It include: that prefilter is connected to fuel tank；One end of petroleum pipeline is connected to prefilter；Oil transfer pump is connected to the other end of petroleum pipeline；Oil inlet
One end of pipe is connected to oil transfer pump；Filter is connected to the other end of oil inlet pipe；One end of flowline is connected to filter；High-pressure oil feed
Pump is connected to the other end of flowline；One end of oily rail pipe is connected to high-pressure fuel-feed pump；One of multiple transit joints with
The other end of oily rail pipe is connected to；Each one end of more high-pressure oil pipes is connected to a transit joint, and the other end is connected to one
Fuel injector；And more high-pressure connecting pipes, it is connected to by a high-pressure connecting pipe between two adjacent transit joints, so that multiple
Transit joint forms series winding connection by more high-pressure connecting pipes.
In a preferred embodiment, the quantity of high-pressure oil pipe and fuel injector is corresponding with the number of cylinders of diesel engine.
In a preferred embodiment, one fewer than the quantity of transit joint of the quantity of high-pressure connecting pipe.
In a preferred embodiment, oil transfer pump is integrated in the rear portion of high-pressure fuel-feed pump.
In a preferred embodiment, the diesel fuel supply system of in-line large scale multi-cylinder diesel engine further includes oil return manifold,
Its oil return portion for being connected to each cylinder simultaneously.
In a preferred embodiment, the diesel fuel supply system of in-line large scale multi-cylinder diesel engine further includes oil return pipe,
One end is connected to oil return manifold, and the other end is connected to high-pressure fuel-feed pump.
Compared with prior art, the diesel fuel supply system of the in-line large scale multi-cylinder diesel engine of the utility model has with following
Beneficial effect: using after common rail pump, peak value driving moment is small, does not need setting drive cam shaft.It is total high pressure is not needed to be separately provided
Rail pipe reduces the manufacture difficulty of common rail pipe.It is connected by transit joint with high-pressure connecting pipe, keeps rail pressure consistent.Oil transfer pump
It is integrated on high-pressure fuel-feed pump, the smaller easy arrangement of volume.High-pressure fuel-feed pump band pressure accumulation chamber, includes multiple plungers；Setting one to
Two high pressure delivery connections, it is fuel-displaced from pressure accumulation chamber, the pressure oscillation of the high-pressure diesel between each plunger is avoided, guarantees high extrude
Oil pressure is constant.
Detailed description of the invention
Fig. 1 is the schematic diagram according to the diesel fuel supply system of one embodiment of the utility model.
Main appended drawing reference explanation:
1- prefilter, 2- petroleum pipeline, 3- oil inlet pipe, 4- filter, 5- flowline, 6- high-pressure fuel-feed pump, 61- oil transfer pump,
7- oil rail pipe, 8- transit joint, 9- high-pressure oil pipe, 10- high-pressure connecting pipe, 11- oil return manifold, 12- oil return pipe, 13- fuel injector,
14- oil return portion.
Specific embodiment
With reference to the accompanying drawing, specific embodiment of the present utility model is described in detail, it is to be understood that this is practical
Novel protection scope is not limited by the specific implementation.
Unless otherwise explicitly stated, otherwise in entire disclosure and claims, term " includes " or its change
Changing such as "comprising" or " including " etc. will be understood to comprise stated element or component, and not exclude other members
Part or other component parts.
As shown in Figure 1, Fig. 1 is the schematic diagram according to the diesel fuel supply system of one embodiment of the utility model.According to this
The diesel fuel supply system of a kind of in-line large scale multi-cylinder diesel engine of utility model preferred embodiment, comprising: prefilter 1 and fuel tank
Connection；One end of petroleum pipeline 2 is connected to prefilter 1；Oil transfer pump 61 is connected to the other end of petroleum pipeline 2；One end of oil inlet pipe 3 connects
Logical oil transfer pump 61；Filter 4 is connected to the other end of oil inlet pipe 3；One end of flowline 5 is connected to filter 4；High-pressure fuel-feed pump 6
It is connected to the other end of flowline 5；One end of oily rail pipe 7 is connected to high-pressure fuel-feed pump 6；One of multiple transit joints 8
It is connected to the other end of oily rail pipe 7；Each one end of more high-pressure oil pipes 9 is connected to a transit joint 8, other end connection
One fuel injector 13；And more high-pressure connecting pipes 10, connected between two adjacent transit joints 8 by a high-pressure connecting pipe 10
It is logical, so that multiple transit joints 8 form series winding connection by more high-pressure connecting pipes 10.
In some embodiments, the quantity of high-pressure oil pipe 9 and fuel injector 13 is corresponding with the number of cylinders of diesel engine.It is high
Quantity one fewer than the quantity of transit joint 8 for pressing connecting tube 10.Oil transfer pump 61 is integrated in the rear portion of high-pressure fuel-feed pump 6, occupies
Space is smaller, and arrangement is got up more easily.
In some embodiments, the diesel fuel supply system of in-line large scale multi-cylinder diesel engine further include oil return manifold 11 and
Oil return pipe 12, oil return manifold 11 are connected to the oil return portion of each cylinder simultaneously, and one end of oil return pipe 12 is connected to oil return manifold 11, another
End connection high-pressure fuel-feed pump 6.
The low pressure diesel of the diesel fuel supply system of the utility model flows to: when system works, being integrated on high-pressure fuel-feed pump 6
Oil transfer pump 61 by the diesel oil in fuel tank through prefilter 1 (prefilter 1 is generally made of level-one pre-flock and second level pre-flock) and oil transportation
Pipe 2 is evacuated to oil transfer pump 61, diesel oil after the pressurization of oil transfer pump 61, by oil inlet pipe 3 reach filter 4 (general filter 4 also by
Two-stage filtering composition)；Diesel oil reaches high-pressure fuel-feed pump 6 by flowline 5 after the filtering of cleaner 4.Each cylinder injector simultaneously
13 extra diesel oil are pooled to oil return pipe 12, oil return pipe 12 and high-pressure fuel-feed pump by the oil return portion and oil return manifold 11 of each cylinder
6 are connected, and flow back into fuel tank after finally converging with the low pressure oil return of high-pressure fuel-feed pump 6.
The high-pressure diesel of the diesel fuel supply system of the utility model flows to: diesel oil is after high-pressure fuel-feed pump 6, pressure liter
Height reaches transit joint 8 by oily rail pipe 7, and each transit joint 8 is connected by the series winding of high-pressure connecting pipe 10, then again by with
The fuel injector 13 that the corresponding high-pressure oil pipe 9 of fuel injector 13 of each cylinder reaches each cylinder carries out oil spout work.
In conclusion the diesel fuel supply system of the in-line large scale multi-cylinder diesel engine of the utility model has the advantage that
1, for in-line large high-speed diesel engine, since number of cylinders is more, and motor length size is larger, general at present
Using electronically controlled unit pump system, one monoblock pump of every cylinder, space hold size is big, and the driving moment that monoblock pump needs is very
Greatly, it needs to consume more energy, the camshaft of driving monoblock pump be required very high；The peak value driving moment ratio of monoblock pump simultaneously
It is larger, it be easy to cause the camshaft of transmission and the failure of gear；After common rail pump, peak value driving moment is small, does not need to be arranged
Drive cam shaft.
2, for in-line large high-speed diesel engine, since number of cylinders is more, and motor length size is larger, common rail pipe cloth
It sets more difficult, influences beautiful and too long of common rail pipe production and get up extremely difficult, the utility model does not need individually to set
High-pressure common-rail pipe is set, the above problem is avoided.
3, after using electronic control common rail system, distributive value and injection timing can full working scope control, fuel injection characteristic can directly control,
Multi-injection may be implemented；Lower combustion noise and oil consumption can be achieved.
4, high-pressure fuel-feed pump band pressure accumulation chamber, includes multiple plungers；One or two high pressure delivery connection is set, is gone out from pressure accumulation chamber
Oil avoids the pressure oscillation of the high-pressure diesel between each plunger, and it is constant to guarantee that high pressure goes out oil pressure；And by transit joint and
High-pressure connecting pipe is connected, and keeps rail pressure consistent.
5, front end train can be remained unchanged without change, high-pressure fuel-feed pump, high-pressure oil pipe etc., in array 4/6/8/9/
Seriation arrangement is realized on 12 equal multicylinder engines.
The description of the aforementioned specific exemplary embodiment to the utility model is in order to illustrate and illustration purpose.These
Description is not wishing to for the utility model to be limited to disclosed precise forms, and it will be apparent that according to the above instruction, can carry out
It is many to change and change.The purpose of selecting and describing the exemplary embodiment is that explaining the specific principle of the utility model
And its practical application, so that those skilled in the art can be realized and utilize a variety of different examples of the utility model
Property embodiment and various chooses and changes.The scope of the utility model is intended to by claims and its waits similar shapes
Formula is limited.
Claims (6)
1. a kind of diesel fuel supply system of array large scale multi-cylinder diesel engine characterized by comprising
Prefilter is connected to fuel tank；
Petroleum pipeline, one end are connected to the prefilter；
Oil transfer pump is connected to the other end of the petroleum pipeline；
Oil inlet pipe, one end are connected to the oil transfer pump；
Filter is connected to the other end of the oil inlet pipe；
Flowline, one end are connected to the filter；
High-pressure fuel-feed pump is connected to the other end of the flowline；
Oily rail pipe, one end are connected to the high-pressure fuel-feed pump；
Multiple transit joints, one of them is connected to the other end of the oily rail pipe；
More high-pressure oil pipes, one end of the every high-pressure oil pipe are connected to a transit joint, and the other end is connected to a spray
Oily device；And
More high-pressure connecting pipes are connected between two adjacent transit joints, so that institute by a high-pressure connecting pipe
It states multiple transit joints and forms series winding connection by more high-pressure connecting pipes.
2. the diesel fuel supply system of array large scale multi-cylinder diesel engine as described in claim 1, which is characterized in that the high pressure oil
Pipe and the quantity of the fuel injector and the number of cylinders of diesel engine are corresponding.
3. the diesel fuel supply system of array large scale multi-cylinder diesel engine as claimed in claim 2, which is characterized in that the high pressure connects
The quantity of adapter tube one fewer than the quantity of the transit joint.
4. the diesel fuel supply system of array large scale multi-cylinder diesel engine as described in claim 1, which is characterized in that the oil transfer pump
It is integrated in the rear portion of the high-pressure fuel-feed pump.
5. the diesel fuel supply system of array large scale multi-cylinder diesel engine as described in claim 1, which is characterized in that further include oil return
Manifold is connected to the oil return portion of each cylinder simultaneously.
6. the diesel fuel supply system of array large scale multi-cylinder diesel engine as claimed in claim 5, which is characterized in that further include oil return
Pipe, one end are connected to the oil return manifold, and the other end is connected to the high-pressure fuel-feed pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920002058.8U CN209163972U (en) | 2019-01-02 | 2019-01-02 | The diesel fuel supply system of in-line large scale multi-cylinder diesel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920002058.8U CN209163972U (en) | 2019-01-02 | 2019-01-02 | The diesel fuel supply system of in-line large scale multi-cylinder diesel engine |
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| Publication Number | Publication Date |
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| CN209163972U true CN209163972U (en) | 2019-07-26 |
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| CN201920002058.8U Active CN209163972U (en) | 2019-01-02 | 2019-01-02 | The diesel fuel supply system of in-line large scale multi-cylinder diesel engine |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109441680A (en) * | 2019-01-02 | 2019-03-08 | 广西玉柴机器股份有限公司 | The diesel fuel supply system of in-line large scale multi-cylinder diesel engine |
| CN111305985A (en) * | 2020-03-31 | 2020-06-19 | 广西玉柴机器股份有限公司 | V-shaped multi-cylinder diesel engine diesel oil supply system capable of reducing pressure fluctuation |
-
2019
- 2019-01-02 CN CN201920002058.8U patent/CN209163972U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109441680A (en) * | 2019-01-02 | 2019-03-08 | 广西玉柴机器股份有限公司 | The diesel fuel supply system of in-line large scale multi-cylinder diesel engine |
| CN111305985A (en) * | 2020-03-31 | 2020-06-19 | 广西玉柴机器股份有限公司 | V-shaped multi-cylinder diesel engine diesel oil supply system capable of reducing pressure fluctuation |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230106 Address after: No.88 Tianqiao West Road, Yulin City, Guangxi Zhuang Autonomous Region Patentee after: Guangxi Yuchai Ship Electric Power Co.,Ltd. Address before: 537005 No. 88 flyover West Road, the Guangxi Zhuang Autonomous Region, Yulin Patentee before: Guangxi Yuchai Machinery Co.,Ltd. |