CN210919307U - Double-sliding sleeve rotor type fuel injection pump - Google Patents
Double-sliding sleeve rotor type fuel injection pump Download PDFInfo
- Publication number
- CN210919307U CN210919307U CN201922184387.1U CN201922184387U CN210919307U CN 210919307 U CN210919307 U CN 210919307U CN 201922184387 U CN201922184387 U CN 201922184387U CN 210919307 U CN210919307 U CN 210919307U
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- China
- Prior art keywords
- plunger assembly
- sliding sleeve
- plunger
- oil inlet
- sliding
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- 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.)
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- 239000000446 fuel Substances 0.000 title claims abstract description 19
- 238000002347 injection Methods 0.000 title claims abstract description 18
- 239000007924 injection Substances 0.000 title claims abstract description 18
- 230000000712 assembly Effects 0.000 claims abstract description 34
- 238000000429 assembly Methods 0.000 claims abstract description 34
- 238000009434 installation Methods 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 abstract description 2
- 238000005086 pumping Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
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Abstract
The utility model provides a double-sliding sleeve rotor type fuel injection pump, which comprises a pump body, an eccentric shaft, a sliding sleeve and a plurality of sets of plunger assemblies; the eccentric shaft is provided with two eccentric sections which are axially distributed along the eccentric shaft; the eccentric section is eccentrically arranged with a rotating shaft of the eccentric shaft; the two eccentric sections are eccentrically arranged; a sliding sleeve is respectively arranged on the two eccentric sections, and each sliding sleeve is correspondingly provided with a plurality of sets of plunger assemblies; a plurality of sets of plunger assemblies corresponding to the same sliding sleeve are distributed along the circumferential direction of the sliding sleeve; the plunger assemblies corresponding to different sliding sleeves are arranged in a staggered mode in the circumferential direction. The utility model has the beneficial technical effects that: the scheme can double the output of the pump and effectively improve the output capacity of the pump under the condition of not greatly increasing the structural size and the weight.
Description
Technical Field
The utility model relates to a common rail engine especially relates to a two sliding sleeve rotor formula fuel injection pumps.
Background
The rotor pump is a common oil pumping device, and is commonly found in a common rail engine; considering the limit conditions of the arrangement space, the mechanical property, the weight reduction of the device and the like of an engine, the conventional single rotor pump is only provided with a sliding sleeve and three sets of plunger assemblies, and the sliding sleeve drives the three sets of plunger assemblies to operate; there are problems in that: in the prior art, the oil pumping output is increased by increasing the number of the rotor pumps, but the size and the weight of the engine are increased correspondingly with the increase of the number of the rotor pumps, and the arrangement positions of parts are required to be redesigned according to the mechanical property of the engine, which is troublesome.
SUMMERY OF THE UTILITY MODEL
Aiming at the problems in the background technology, the utility model provides a double-sliding sleeve rotor type fuel injection pump, which comprises a pump body, an eccentric shaft, a sliding sleeve and a plurality of sets of plunger assemblies; the pump body is internally provided with a shaft cavity and a plurality of mounting cavities, the axial direction of each mounting cavity is vertical to the axial direction of the shaft cavity, and the inner ends of the mounting cavities are communicated with the shaft cavity; the shaft cavity is used for arranging an eccentric shaft and a sliding sleeve, the installation cavities are used for arranging plunger assemblies, and the installation cavities correspond to the plunger assemblies one by one; the transmission end of the plunger assembly is contacted with the outer wall of the sliding sleeve; the method is characterized in that: the eccentric shaft is provided with two eccentric sections which are axially distributed along the eccentric shaft; the eccentric section is eccentrically arranged with a rotating shaft of the eccentric shaft; the two eccentric sections are eccentrically arranged; a sliding sleeve is respectively arranged on the two eccentric sections, and each sliding sleeve is correspondingly provided with a plurality of sets of plunger assemblies; a plurality of sets of plunger assemblies corresponding to the same sliding sleeve are distributed along the circumferential direction of the sliding sleeve; the plunger assemblies corresponding to different sliding sleeves are arranged in a staggered mode in the circumferential direction.
The utility model discloses a main innovation point is: two sliding sleeves have been integrateed in a pump body, and every sliding sleeve all corresponds has many sets of plunger assemblies, compares in the rotor pump that only has a sliding sleeve, the utility model discloses can increase the little condition at pump body size, make the fuel output volume of pump increase one time, owing to the plunger assembly that corresponds different sliding sleeves sets up in the dislocation in week in addition, "two sliding sleeves" can not lead to the fact too big influence to the mechanical properties of pump.
Preferably, a single sliding sleeve corresponds to 3 sets of plunger assemblies.
Preferably, three sets of plunger assemblies corresponding to one of the sliding sleeves are respectively recorded as a first plunger assembly, a second plunger assembly and a third plunger assembly, and three sets of plunger assemblies corresponding to the other sliding sleeve are respectively recorded as a fourth plunger assembly, a fifth plunger assembly and a sixth plunger assembly; an oil outlet of the first plunger assembly is connected with an oil inlet pipeline of the second plunger assembly, an oil outlet of the second plunger assembly is connected with an oil inlet pipeline of the third plunger assembly, and an oil outlet of the third plunger assembly forms a first oil outlet of the double-sliding-sleeve rotor type fuel injection pump; an oil outlet of the plunger assembly IV is connected with an oil inlet pipeline of the plunger assembly V, an oil outlet of the plunger assembly V is connected with an oil inlet pipeline of the plunger assembly VI, and an oil outlet of the plunger assembly VI forms a second oil outlet of the double-sliding-sleeve rotor type fuel injection pump; an oil inlet of the first plunger assembly, an oil inlet of the second plunger assembly, an oil inlet of the third plunger assembly, an oil inlet of the fourth plunger assembly, an oil inlet of the fifth plunger assembly and an oil inlet of the sixth plunger assembly are respectively communicated with an oil inlet of the double-sliding-sleeve rotor type fuel injection pump through corresponding pipelines.
The utility model has the beneficial technical effects that: the scheme can double the output of the pump and effectively improve the output capacity of the pump under the condition of not greatly increasing the structural size and the weight.
Drawings
Fig. 1 is a schematic view of the external structure of the present invention;
FIG. 2 is a schematic sectional view of a sliding sleeve at one position;
FIG. 3 is a schematic diagram showing the positional relationship between the eccentric shaft, the sliding sleeve and the plunger;
the names corresponding to each mark in the figure are respectively: pump body 1, eccentric shaft 2, sliding sleeve 3.
Detailed Description
A double-sliding sleeve rotor type fuel injection pump comprises a pump body 1, an eccentric shaft 2, a sliding sleeve 3 and a plurality of sets of plunger assemblies; the pump body 1 is internally provided with a shaft cavity and a plurality of mounting cavities, the axial direction of each mounting cavity is vertical to the axial direction of the shaft cavity, and the inner ends of the mounting cavities are communicated with the shaft cavity; the shaft cavity is used for arranging an eccentric shaft 2 and a sliding sleeve 3, the installation cavities are used for arranging plunger assemblies, and the installation cavities correspond to the plunger assemblies one by one; the transmission end of the plunger assembly is contacted with the outer wall of the sliding sleeve 3; the method is characterized in that: the eccentric shaft 2 is provided with two eccentric sections which are axially distributed along the eccentric shaft 2; the eccentric section is eccentrically arranged with the rotating shaft of the eccentric shaft 2; the two eccentric sections are eccentrically arranged; a sliding sleeve 3 is respectively arranged on the two eccentric sections, and each sliding sleeve 3 is correspondingly provided with a plurality of sets of plunger assemblies; a plurality of sets of plunger assemblies corresponding to the same sliding sleeve 3 are distributed along the circumferential direction of the sliding sleeve 3; the plunger assemblies corresponding to different sliding sleeves 3 are arranged in a staggered mode in the circumferential direction.
Further, there are 3 sets of plunger assemblies corresponding to a single sliding sleeve 3.
Further, three sets of plunger assemblies corresponding to one of the sliding sleeves 3 are respectively marked as a first plunger assembly, a second plunger assembly and a third plunger assembly, and three sets of plunger assemblies corresponding to the other sliding sleeve 3 are respectively marked as a fourth plunger assembly, a fifth plunger assembly and a sixth plunger assembly;
an oil outlet of the first plunger assembly is connected with an oil inlet pipeline of the second plunger assembly, an oil outlet of the second plunger assembly is connected with an oil inlet pipeline of the third plunger assembly, and an oil outlet of the third plunger assembly forms a first oil outlet of the double-sliding-sleeve rotor type fuel injection pump;
an oil outlet of the plunger assembly IV is connected with an oil inlet pipeline of the plunger assembly V, an oil outlet of the plunger assembly V is connected with an oil inlet pipeline of the plunger assembly VI, and an oil outlet of the plunger assembly VI forms a second oil outlet of the double-sliding-sleeve rotor type fuel injection pump;
an oil inlet of the first plunger assembly, an oil inlet of the second plunger assembly, an oil inlet of the third plunger assembly, an oil inlet of the fourth plunger assembly, an oil inlet of the fifth plunger assembly and an oil inlet of the sixth plunger assembly are respectively communicated with an oil inlet of the double-sliding-sleeve rotor type fuel injection pump through corresponding pipelines.
Claims (3)
1. A double-sliding sleeve rotor type fuel injection pump comprises a pump body (1), an eccentric shaft (2), a sliding sleeve (3) and a plurality of sets of plunger assemblies; the pump body (1) is internally provided with a shaft cavity and a plurality of mounting cavities, the axial direction of each mounting cavity is vertical to the axial direction of the shaft cavity, and the inner ends of the mounting cavities are communicated with the shaft cavity; the shaft cavity is used for arranging an eccentric shaft (2) and a sliding sleeve (3), the installation cavities are used for arranging plunger assemblies, and the installation cavities correspond to the plunger assemblies one by one; the transmission end of the plunger assembly is contacted with the outer wall of the sliding sleeve (3); the method is characterized in that: the eccentric shaft (2) is provided with two eccentric sections which are axially distributed along the eccentric shaft (2); the eccentric section is eccentrically arranged with the rotating shaft of the eccentric shaft (2); the two eccentric sections are eccentrically arranged; a sliding sleeve (3) is respectively arranged on the two eccentric sections, and each sliding sleeve (3) is correspondingly provided with a plurality of sets of plunger assemblies; a plurality of sets of plunger assemblies corresponding to the same sliding sleeve (3) are distributed along the circumferential direction of the sliding sleeve (3); the plunger assemblies corresponding to different sliding sleeves (3) are arranged in a staggered mode in the circumferential direction.
2. The dual-sliding-sleeve rotor-type fuel injection pump of claim 1, wherein: a single sliding sleeve (3) corresponds to 3 sets of plunger assemblies.
3. The dual-sliding-sleeve rotor-type fuel injection pump of claim 2, wherein: respectively recording three sets of plunger assemblies corresponding to one sliding sleeve (3) as a first plunger assembly, a second plunger assembly and a third plunger assembly, and respectively recording three sets of plunger assemblies corresponding to the other sliding sleeve (3) as a fourth plunger assembly, a fifth plunger assembly and a sixth plunger assembly;
an oil outlet of the first plunger assembly is connected with an oil inlet pipeline of the second plunger assembly, an oil outlet of the second plunger assembly is connected with an oil inlet pipeline of the third plunger assembly, and an oil outlet of the third plunger assembly forms a first oil outlet of the double-sliding-sleeve rotor type fuel injection pump;
an oil outlet of the plunger assembly IV is connected with an oil inlet pipeline of the plunger assembly V, an oil outlet of the plunger assembly V is connected with an oil inlet pipeline of the plunger assembly VI, and an oil outlet of the plunger assembly VI forms a second oil outlet of the double-sliding-sleeve rotor type fuel injection pump;
an oil inlet of the first plunger assembly, an oil inlet of the second plunger assembly, an oil inlet of the third plunger assembly, an oil inlet of the fourth plunger assembly, an oil inlet of the fifth plunger assembly and an oil inlet of the sixth plunger assembly are respectively communicated with an oil inlet of the double-sliding-sleeve rotor type fuel injection pump through corresponding pipelines.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922184387.1U CN210919307U (en) | 2019-12-09 | 2019-12-09 | Double-sliding sleeve rotor type fuel injection pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922184387.1U CN210919307U (en) | 2019-12-09 | 2019-12-09 | Double-sliding sleeve rotor type fuel injection pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210919307U true CN210919307U (en) | 2020-07-03 |
Family
ID=71361297
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922184387.1U Active CN210919307U (en) | 2019-12-09 | 2019-12-09 | Double-sliding sleeve rotor type fuel injection pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210919307U (en) |
-
2019
- 2019-12-09 CN CN201922184387.1U patent/CN210919307U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 401120 No.6 cuining Road, jingkaiyuan, Liangjiang New District, Yubei District, Chongqing Patentee after: Heavy oil high tech electronic fuel injection system (Chongqing) Co.,Ltd. Address before: 401120 No.6 cuining Road, jingkaiyuan, Liangjiang New District, Yubei District, Chongqing Patentee before: CHONGQING FUEL INJECTION SYSTEM CO., LTD. OF CHINA NATIONAL HEAVY DUTY TRUCK Group Corp. |
|
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 401120 No.6 cuining Road, jingkaiyuan, Liangjiang New District, Yubei District, Chongqing Patentee after: Heavy Oil High Tech Electronic Fuel Injection System Co.,Ltd. Address before: 401120 No.6 cuining Road, jingkaiyuan, Liangjiang New District, Yubei District, Chongqing Patentee before: Heavy oil high tech electronic fuel injection system (Chongqing) Co.,Ltd. |