CN202252761U - Internal-drainage engine oil pump - Google Patents
Internal-drainage engine oil pump Download PDFInfo
- Publication number
- CN202252761U CN202252761U CN2011204026017U CN201120402601U CN202252761U CN 202252761 U CN202252761 U CN 202252761U CN 2011204026017 U CN2011204026017 U CN 2011204026017U CN 201120402601 U CN201120402601 U CN 201120402601U CN 202252761 U CN202252761 U CN 202252761U
- Authority
- CN
- China
- Prior art keywords
- oil
- limiting valve
- pressure
- pressure limiting
- pump
- Prior art date
- 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.)
- Expired - Lifetime
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Abstract
The utility model discloses an internal-drainage engine oil pump, which comprises a pump cover, a pump body, an outer rotor, an inner rotor, a transmission shaft and a pressure limiting valve accessory. An oil inlet chamber and an oil outlet chamber are arranged in the pump body. A pressure limiting valve hole is arranged at the lower side part of the pump body. An oil guide hole which is communicated with the oil outlet chamber is arranged at the valve bottom of the pressure limiting valve hole. An oil drainage hole which is communicated with the oil inlet chamber is arranged on the internal side of the pressure limiting valve hole. The pressure limiting valve accessory comprises a pressure limiting valve plunger, a pressure limiting valve spring and a spring plug, wherein the spring plug installs the pressure limiting valve plunger and the pressure limiting valve spring in the pressure limiting valve hole. By adopting an internal drainage method in parallel with the pump body, pressure oil is enabled to be drained into the oil inlet chamber from the internal part of the oil outlet chamber, the engine oil which is drained into the oil inlet chamber is enabled to enter a secondary circulation, the use efficiency of the engine oil pump is improved and the power loss of an engine is reduced; and the aging of the engine oil is delayed, the lubricating effect of the engine oil to the engine is kept, and the utilization ratio of the engine oil and the service life of the engine are improved.
Description
Technical field
The utility model relates to automotive engine lubrication systems technology field, lets out oil pump in particularly a kind of E4G16 type.
Technical background
The existing a kind of and supporting vertically disposed formula pressure-limit valve that leaks of automobile engine oil pump, promptly when engine oil pressure was higher than the required standard value, pressure oil directly was excreted in the oil sump, to reduce the pressure of oil pump and main oil gallery inner engine oil.Its deficiency is: this mode that directly outwards enters oil sump; Both wasted the useful horsepower of motor self; Again because machine oil is when directly leaking into oil sump and increase the air content in the machine oil; Impel the easy oxidation of machine oil, reduce viscosity and lubricating efficiency and shorten service time of machine oil, increased the loss of engine power and fallen working life of motor.
Summary of the invention
The utility model technical problem to be solved is to the deficiency on the existing technology; Let out oil pump and provide in a kind of E4G16 type through technological improvement and oil pump horizontal integration; Let out oil pump in this E4G16 type and can reduce motor self power loss; It is aging and keep machine oil to the engine lubrication effect to delay machine oil, improves motor working life.
The utility model technical problem to be solved can realize through following technological scheme:
Let out oil pump in a kind of, comprise pump cover, the pump housing, external rotor, internal rotor, transmission shaft and pressure-limit valve annex, said pump cover is installed on the said pump housing; Said transmission shaft is installed in the axis hole of the pump housing and pump cover, and the outer end is provided with transmission boss and screw, and said internal rotor is installed in the middle part of said transmission shaft; External rotor is sleeved on the said internal rotor; In the said pump housing, be provided with out oil pocket and oil suction chamber, it is characterized in that, be provided with a pressure limiting valve opening at the downside position of the said pump housing; At the bottom of the valve of said pressure limiting valve opening, be provided with one and go out the oil guiding hole that oil pocket is communicated with, be provided with the oil drainage hole that is communicated with said oil suction chamber in said pressure limiting valve opening inboard with said; Said pressure-limit valve annex comprises that pressure-limit valve plunger, limiting valve spring and spring stop up; Said spring stops up said pressure-limit valve plunger and limiting valve spring is installed in the said pressure limiting valve opening, and said limiting valve spring is between said pressure-limit valve plunger and spring obstruction.
In a preferred embodiment of the utility model, said oil guiding hole is step-like.
In a preferred embodiment of the utility model, the termination of said pressure-limit valve plunger is taper.
When motor booster engine oil pressure raises; With the pressure-limit valve plunger when limiting valve spring one end promotes; When the oil drainage hole aperture is passed at the set taper position of cylindrical, pressure-limit valve plunger termination; Pressure machine oil begin the gap location ascending from the taper position through oil drainage hole to the oil suction chamber diffluence, implement regulation and control to oil pump and main oil gallery inner engine oil pressure; At this moment, pressure oil is excreted to oil suction chamber from going out oil pocket inside, makes this machine oil that partly is excreted to oil suction chamber get into circulation for the second time, has therefore improved the utilization efficiency of oil pump.
The technical requirements of letting out oil pump in the said E4G16 type is:
When oily temperature is 50 ℃, the oil pump rotating speed is 730rpm, when outlet pressure is 300kpa, and flow >=7L/min;
When oil temperature is 120 ℃, the oil pump rotating speed is 5478rpm, when outlet pressure is 300kpa, and flow >=55L/min;
When the oil pump rotating speed is 2740rpm, pressure limiting valve opening pressure is 450 ± 20kpa-700kpa.
The utility model compared with prior art has following characteristics:
The utility model improves pressure-limit valve accessory structure technical application; Adopt and let out mode in parallel with the pump housing; Make pressure oil be excreted to oil suction chamber from going out oil pocket inside; This machine oil that partly is excreted to oil suction chamber is got into circulation for the second time, improved the utilization efficiency of oil pump, reduced the loss of motor self power; Delay machine oil aging and keep machine oil to the engine lubrication effect, improved the utilization ratio of machine oil and the working life of motor.
Description of drawings
Fig. 1 is the structural representation of the utility model;
Fig. 2 is Figure 1A-A sectional view.
Embodiment
Below in conjunction with accompanying drawing and embodiment the detailed structure of the utility model is done further to describe.
As depicted in figs. 1 and 2, let out oil pump in the E4G16 type and comprise pump cover 1, the pump housing 2, external rotor 3, internal rotor 4, transmission shaft 5 and pressure-limit valve annex 6.
The pressure-limit valve annex comprises that pressure-limit valve plunger 7, limiting valve spring 8 and spring stop up 9, and spring obstruction 9 is installed in pressure-limit valve plunger 7 and limiting valve spring 8 in the pressure limiting valve opening 10, and limiting valve spring 8 stops up between 9 at pressure-limit valve plunger 7 and spring.
When making engine oil pressure, the motor speedup raises; With pressure-limit valve plunger 7 when limiting valve spring 8 one ends promote; Taper 15 positions that pressure-limit valve plunger 7 terminations are set; When passing the aperture of oil drainage hole 12, pressure machine oil begins ascending gap location to oil drainage hole 12 and oil suction chamber 14 diffluences, implements the regulation and control to oil pump and main oil gallery inner engine oil pressure; At this moment, pressure oil is excreted to oil suction chamber 14 from going out oil pocket 13 inside, makes this part pressure machine oil be excreted to oil suction chamber 14 backs and gets into circulation for the second time, so improved the utilization efficiency of oil pump.
Claims (3)
1. let out oil pump in one kind, comprise pump cover, the pump housing, external rotor, internal rotor, transmission shaft and pressure-limit valve annex, said pump cover is installed on the said pump housing; Said transmission shaft is installed in the axis hole of the pump housing and pump cover, and the outer end is provided with transmission boss and screw, and said internal rotor is installed in the middle part of said transmission shaft; External rotor is sleeved on the said internal rotor; In the said pump housing, be provided with out oil pocket and oil suction chamber, it is characterized in that, be provided with a pressure limiting valve opening at the downside position of the said pump housing; At the bottom of the valve of said pressure limiting valve opening, be provided with one and go out the oil guiding hole that oil pocket is communicated with, be provided with the oil drainage hole that is communicated with said oil suction chamber in said pressure limiting valve opening inboard with said; Said pressure-limit valve annex comprises that pressure-limit valve plunger, limiting valve spring and spring stop up; Said spring stops up said pressure-limit valve plunger and limiting valve spring is installed in the said pressure limiting valve opening, and said limiting valve spring is between said pressure-limit valve plunger and spring obstruction.
2. let out oil pump in as claimed in claim 1, it is characterized in that, said oil guiding hole is step-like.
3. let out oil pump in as claimed in claim 1, it is characterized in that, the termination of said pressure-limit valve plunger is taper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204026017U CN202252761U (en) | 2011-10-20 | 2011-10-20 | Internal-drainage engine oil pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204026017U CN202252761U (en) | 2011-10-20 | 2011-10-20 | Internal-drainage engine oil pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202252761U true CN202252761U (en) | 2012-05-30 |
Family
ID=46114002
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204026017U Expired - Lifetime CN202252761U (en) | 2011-10-20 | 2011-10-20 | Internal-drainage engine oil pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202252761U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103016940A (en) * | 2012-12-18 | 2013-04-03 | 中国人民解放军军事交通学院 | Vehicle energy-saving oil pump |
-
2011
- 2011-10-20 CN CN2011204026017U patent/CN202252761U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103016940A (en) * | 2012-12-18 | 2013-04-03 | 中国人民解放军军事交通学院 | Vehicle energy-saving oil pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120530 |