CN205014009U - Two step change discharge capacity oil pump of machinery valve accuse - Google Patents
Two step change discharge capacity oil pump of machinery valve accuse Download PDFInfo
- Publication number
- CN205014009U CN205014009U CN201520756568.6U CN201520756568U CN205014009U CN 205014009 U CN205014009 U CN 205014009U CN 201520756568 U CN201520756568 U CN 201520756568U CN 205014009 U CN205014009 U CN 205014009U
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- mouth
- pressure
- chamber
- communicate
- variable
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Abstract
The utility model provides a two step change discharge capacity oil pump of machinery valve accuse, including mechanical valve, the pump body, be equipped with rotor cavity in the pump body, install rotor, rotatory round pin, variable slider and variable spring among the rotor cavity, be equipped with spring pressing block on the variable slider, be equipped with first pressure feedback chamber and second pressure feedback chamber between variable slider and rotor cavity wall, the machinery valve includes valve barrel, case and spring, be equipped with oil inlet, drain tap, a mouth and B mouth on the valve barrel, wherein A mouth and first pressure feedback chamber communicates with each other, and the B mouth feeds back the chamber with second pressure and communicates with each other, and the oil inlet communicates with each other with the A mouth all the time, and when oil inlet pressure was less than the switching pressure of settlement, drain tap and B mouth communicated with each other, and A mouth and B mouth do not communicate with each other, and when oil inlet pressure was higher than the switching pressure of settlement, drain tap and B mouth did not communicate with each other, and A mouth and B mouth communicate with each other. Impeller pump two -stage variable displacement has been realized to feedback oil pressure through a mechanical valve control pressure control chamber and the 2nd pressure control intracavity.
Description
Technical field
The utility model relates to a kind of secondary variable displacement blade type oil pump.
Background technique
Along with engine lubrication system oil pump becomes the growing and universal of Displacement Technology, blade type oil pump is applied widely, existing vane pump comprises single-acting chamber feedback and two kinds of variable formats are fed back in double-action chamber, wherein single-acting chamber feedback can be designed to one-level variable displacement pattern, can realize MAP by electrohydraulic proportional control valve to control, double-action chamber feedback can be designed to two-stage variable discharge capacity pattern.
Model utility content
The technical problems to be solved in the utility model is to provide a kind of secondary variable displacement blade type oil pump, controls double-action chamber feedback realize two-stage variable discharge capacity by mechanical valve.
For solving the problems of the technologies described above, the technical solution of the utility model is: a kind of mechanical valve control secondary becomes displacement oil pump, comprise mechanical valve, the pump housing, rotor chamber is provided with in the described pump housing, rotor, rotating dog, variable slide block and variable spring are installed in described rotor chamber, described variable slide block is provided with spring lock block, two pressure feedback chambeies are provided with between variable slide block and rotor chamber wall, two pressure feedback chambeies lay respectively at the both sides of rotating dog, wherein with spring lock block on same one side is the first pressure feedback chamber, and another is the second pressure feedback chamber; Described mechanical valve comprises valve pocket, spool and spring, described valve pocket is provided with filler opening, drain tap, A mouth and B mouth, wherein A mouth communicates with the first pressure feedback chamber, and B mouth communicates with the second pressure feedback chamber, and filler opening communicates with A mouth all the time, when inlet pressure is lower than the switching pressure set, drain tap and B mouth communicate, and A mouth and B mouth do not communicate, when inlet pressure is higher than the switching pressure set, drain tap and B mouth do not communicate, and A mouth and B mouth communicate.
The working principle of technique scheme is: in periods of low pressure, because the pressure of filler opening is lower than the switching pressure set, A mouth and B mouth do not communicate, B mouth and drain tap communicate, without pressure oil in second pressure control cavity, have pressure oil in first pressure control cavity, variable slide block, under the effect of the first Stress control cavity pressure oil, rotates around rotating dog and makes the change of vane pump bias carry out Displacement Regulation to keep engine pressure constant.At high pressure phase, because the pressure of filler opening is higher than the switching pressure set, drain tap and B mouth do not communicate, A mouth and B mouth communicate, the pressure oil of coming in from filler opening enters the first pressure control cavity and the second pressure control cavity by A mouth and B mouth simultaneously, variable slide block, under the effect of the first pressure control cavity and the second Stress control cavity pressure oil, rotates around rotating dog and makes the change of vane pump bias carry out Displacement Regulation to keep engine pressure constant.
The utility model achieves vane pump two-stage variable discharge capacity by the mechanical valve feedback oil pressure controlled in the first pressure control cavity and the second pressure control cavity.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Embodiment
A kind of mechanical valve control secondary as shown in Figure 1 becomes displacement oil pump, comprise mechanical valve 1, the pump housing 2, rotor chamber is provided with in the described pump housing 2, rotor 3, rotating dog 4, variable slide block 5 and variable spring 6 are installed in described rotor chamber, described variable slide block 5 is provided with spring lock block, two pressure feedback chambeies are provided with between variable slide block 5 and rotor chamber wall, two pressure feedback chambeies lay respectively at the both sides of rotating dog 4, wherein with spring lock block 5 on same one side is the first pressure feedback chamber 7, and another is the second pressure feedback chamber 8; Described mechanical valve 1 comprises valve pocket 11, spool 12 and spring 13, described valve pocket is provided with filler opening 14, drain tap 15, A mouth 16 and B mouth 17, wherein A mouth 16 communicates with the first pressure feedback chamber 7, B mouth 17 communicates with the second pressure feedback chamber 8, filler opening 14 communicates with A mouth 16 all the time, when filler opening 14 pressure is lower than the switching pressure set, drain tap 15 and B mouth 17 communicate, A mouth 16 and B mouth 17 do not communicate, when filler opening 14 pressure is higher than the switching pressure set, drain tap 15 and B mouth 17 do not communicate, and A mouth 16 and B mouth 17 communicate.
The working principle of technique scheme is: in periods of low pressure, because the pressure of filler opening 14 is lower than the switching pressure set, A mouth 16 and B mouth 17 do not communicate, B mouth 17 and drain tap 15 communicate, without pressure oil in second pressure control cavity 8, have pressure oil in first pressure control cavity 7, variable slide block 5, under the effect of the first pressure control cavity 7 internal pressure oil, rotates around rotating dog 4 and makes the change of vane pump bias carry out Displacement Regulation to keep engine pressure constant.At high pressure phase, because the pressure of filler opening 14 is higher than the switching pressure set, drain tap 15 and B mouth 17 do not communicate, A mouth 16 and B mouth 14 communicate, the pressure oil of coming in from filler opening 14 enters the first pressure control cavity 7 and the second pressure control cavity 8 by A mouth 16 and B mouth 14 simultaneously, variable slide block 5, under the effect of the first pressure control cavity 7 and the second pressure control cavity 8 internal pressure oil, rotates around rotating dog 4 and makes the change of vane pump bias carry out Displacement Regulation to keep engine pressure constant.
Claims (1)
1. a mechanical valve control secondary becomes displacement oil pump, comprise mechanical valve, the pump housing, rotor chamber is provided with in the described pump housing, rotor, rotating dog, variable slide block and variable spring are installed in described rotor chamber, described variable slide block is provided with spring lock block, it is characterized in that: between variable slide block and rotor chamber wall, be provided with two pressure feedback chambeies, two pressure feedback chambeies lay respectively at the both sides of rotating dog, wherein with spring lock block on same one side is the first pressure feedback chamber, and another is the second pressure feedback chamber; Described mechanical valve comprises valve pocket, spool and spring, described valve pocket is provided with filler opening, drain tap, A mouth and B mouth, wherein A mouth communicates with the first pressure feedback chamber, and B mouth communicates with the second pressure feedback chamber, and filler opening communicates with A mouth all the time, when inlet pressure is lower than the switching pressure set, drain tap and B mouth communicate, and A mouth and B mouth do not communicate, when inlet pressure is higher than the switching pressure set, drain tap and B mouth do not communicate, and A mouth and B mouth communicate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520756568.6U CN205014009U (en) | 2015-09-28 | 2015-09-28 | Two step change discharge capacity oil pump of machinery valve accuse |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520756568.6U CN205014009U (en) | 2015-09-28 | 2015-09-28 | Two step change discharge capacity oil pump of machinery valve accuse |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205014009U true CN205014009U (en) | 2016-02-03 |
Family
ID=55212611
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520756568.6U Withdrawn - After Issue CN205014009U (en) | 2015-09-28 | 2015-09-28 | Two step change discharge capacity oil pump of machinery valve accuse |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205014009U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105179912A (en) * | 2015-09-28 | 2015-12-23 | 湖南机油泵股份有限公司 | Mechanical valve control two-level variable-displacement oil pump |
| CN106247149A (en) * | 2016-08-30 | 2016-12-21 | 宁波圣龙汽车动力***股份有限公司 | Displacement-variable oil pump |
| CN111174078A (en) * | 2020-03-20 | 2020-05-19 | 湖南机油泵股份有限公司 | Single-side support oil pump with chain wheel |
-
2015
- 2015-09-28 CN CN201520756568.6U patent/CN205014009U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105179912A (en) * | 2015-09-28 | 2015-12-23 | 湖南机油泵股份有限公司 | Mechanical valve control two-level variable-displacement oil pump |
| CN106247149A (en) * | 2016-08-30 | 2016-12-21 | 宁波圣龙汽车动力***股份有限公司 | Displacement-variable oil pump |
| CN111174078A (en) * | 2020-03-20 | 2020-05-19 | 湖南机油泵股份有限公司 | Single-side support oil pump with chain wheel |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160203 Effective date of abandoning: 20190118 |