CN201198774Y - Pressure-limiting valve of engine oil - Google Patents
Pressure-limiting valve of engine oil Download PDFInfo
- Publication number
- CN201198774Y CN201198774Y CNU200820035795XU CN200820035795U CN201198774Y CN 201198774 Y CN201198774 Y CN 201198774Y CN U200820035795X U CNU200820035795X U CN U200820035795XU CN 200820035795 U CN200820035795 U CN 200820035795U CN 201198774 Y CN201198774 Y CN 201198774Y
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- CN
- China
- Prior art keywords
- pressure
- limiting valve
- pressure limiting
- oil
- valve
- 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 - Fee Related
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Abstract
The utility model relates to an engine oil pressure limiting valve, in particular to a pressure limiting valve arranged in a main oil gallery on an engine gearing chamber cover, which is to limit the maximum pressure of mobile oil. The pressure limiting valve is characterized in that a pressure limiting valve plunger, a pressure limiting valve spring, a joint washer and a pressure limiting valve plug screw are arranged in the body of the pressure limiting valve in turn. The pressure limiting valve plug screw protrudes beyond the body of the pressure limiting valve. A plurality of oil return holes are arranged in the pressure limiting valve plunger. A plurality of pressure limiting valve oil drains are arranged in the body of the pressure limiting valve. The pressure limiting valve can avoid the adverse effects of chattering caused when an oil pump limits pressure and high temperature of the mobile oil, which can effectively control the pressure of the main mobile oil so that the engine works without failure. As the pressure limiting valve plug screw is arranged outside the gearing chamber cover, the engine oil pressure limiting valve can be machined, installed, debugged and maintained conveniently.
Description
Technical field
The utility model relates to a kind of engine oil pressure-limiting valve of engine, specifically is mounted in a pressure-limit valve in the engine gear case lid machine oil main oil gallery, and its effect is the maximum pressure of restriction machine oil.
Background technique
In prior art, during engine operation, the pump oil pressure of oil pump increases with engine speed and raises, and silts up when oil circuit in the lubricating system: when engine oil viscosity too small as the bearing play or use is excessive, also can make the charge oil pressure rising.Therefore, the maximum pressure of machine oil in the necessary limiting engine main oil gallery is to guarantee safety.Traditional pressure limiting device is in oil pump.Set pressure and pressure-limit valve is set for the engine oil pressure with fuel-displaced side is restricted to, what have opens pressure-limit valve draining hole excessive for oil overflow being discharged to the oil pump outside, oil overflow is sharply discharged during pressure regulation, chattering takes place, the oil-feed side that oil overflow is turned back to oil pump that also has, lubricant oil just circulates between oil pump oil-feed side and fuel-displaced side like this, causes lubricating oil temperature sharply to raise.
Summary of the invention
The purpose of this utility model is to overcome above-mentioned deficiency, thereby a kind of engine oil pressure-limiting valve of engine is provided, the adverse effect of chattering that produces in the time of avoiding the oil pump pressure limiting and machine oil temperature rise; Can effectively control machine oil master oil in pressure, make the motor proper functioning.
Main solution of the present utility model is achieved in that
The utility model major character is to comprise pressure-limit valve valve body, pressure-limit valve plunger, limiting valve spring, seal washer and pressure-limit valve plug screw, pressure-limit valve plunger, limiting valve spring, seal washer is installed in the pressure-limit valve valve body successively, is reached the pressure-limit valve plug screw.
Described pressure-limit valve plug screw stretches out the pressure-limit valve valve body, and the pressure-limit valve plug screw is stretched in the gear chamber cover outside.
In the described pressure-limit valve plunger a plurality of spill ports are set.
Be provided with a plurality of pressure-limit valve drainings hole in the described pressure-limit valve valve body.
Described spill port aligns with pressure-limit valve draining hole.Be provided with a plurality of pressure-limit valve drainings hole in the described pressure-limit valve valve body, and the passage gross area of doing a pressure-limit valve draining hole equals the opening area of pressure-limit valve more.
Compared with the prior art the utility model has the following advantages:
The utility model is simple, compact and reasonable for structure; Because pressure-limit valve is to be directly installed on the gear chamber cover in the machine oil main oil gallery, and the oil overflow that produces when in pressure-limit valve, being provided with several with the pressure limiting draining hole of discharging, the passage gross area in several draining holes equals the opening area of engine oil pressure limiting valve valve.The chattering that has produced when therefore having avoided the oil pump pressure limiting and the adverse effect of machine oil temperature rise.Because the pressure-limit valve plug screw of pressure-limit valve is arranged on the gear chamber cover outside, thus pressure-limit valve processing, to install, debugging is safeguarded all very convenient.
Description of drawings
Fig. 1 is the utility model user mode machine shape figure.
Fig. 2 is a lubrication system critical piece outline drawing under the utility model user mode.
Fig. 3 is that the P of the utility model pressure-limit valve user mode is to partial view.
Fig. 4 is the B～B sectional view of the utility model pressure-limit valve user mode.
Fig. 5 is the F～F sectional view in the utility model pressure-limit valve draining hole.
Embodiment
Embodiment during following the utility model is incited somebody to action in conjunction with the accompanying drawings is further described:
The utility model mainly comprises gear chamber cover 1, gear chamber cover machine oil main oil gallery 2, oil pump high-voltage oil cavity 3, pressure-limit valve plunger 4, limiting valve spring 5, pressure-limit valve plug screw 6, seal washer 7, draining hole 8, draining hole 9, gear chamber 10, pressure-limit valve valve body 11, oil pump 12, body main oil gallery 13, pressure-limit valve plunger spill port 14 of motor etc.
As Fig. 1～shown in Figure 4: a pressure-limit valve is installed in the gear chamber cover machine oil main oil gallery 2 of motor, and this gear chamber cover machine oil main oil gallery 2 directly communicates with oil pump high-voltage oil cavity 3.
The utility model pressure-limit valve is made up of pressure-limit valve plunger 4, limiting valve spring 5, seal washer 7 and pressure-limit valve plug screw 6.Pressure-limit valve plunger 4, limiting valve spring 5, seal washer 7 are installed in pressure-limit valve valve body 11 successively, are reached pressure-limit valve plug screw 6, pressure-limit valve plug screw 4 stretches out pressure-limit valve valve body 11.And pressure-limit valve plug screw 4 is stretched in gear chamber cover 1 outside.In pressure-limit valve valve body 11, several pressure-limit valve draining holes 8 and 9 are set, several pressure-limit valve draining holes 8 and 9 the passage gross area equal the opening area of pressure-limit valve.Several spill ports 14 are set in pressure-limit valve plunger 4, and the spill port 14 during installation in this pressure-limit valve plunger 4 just aligns with pressure-limit valve draining hole 8,9.
Machine oil flows out from oil pump high-voltage oil cavity 3 rapidly and enters in the gear chamber cover plate machine oil main oil gallery 2 when oil pump 12 runs up, engine oil pressure constantly increases along with the increase of engine speed, engine oil pressure in gear chamber cover plate machine oil oil duct 2 surpasses predetermined the going up of setting and prescribes a time limit, overcome the impacting force of limiting valve spring 5, promote pressure-limit valve plunger 4, with gradually open pressure-limit valve draining hole 8 and 9, machine oil all is discharged in the gear chamber 10 from pressure-limit valve draining hole 8 and 9, make the machine oil release in the body main oil gallery 13, treat engine oil pressure in the body main oil gallery 13 drop to the normal value of setting after pressure-limit valve close.The machine oil of leaving in the pressure-limit valve plunger 4 is discharged in the gear chamber 10 by pressure-limit valve plunger spill port 14 at this moment.
As mentioned above, pressure-limit valve of the present invention can effectively be controlled the pressure in the machine oil master oil, makes the motor proper functioning.
Claims (5)
1. engine oil pressure-limiting valve of engine, it is characterized in that comprising pressure-limit valve valve body (11), pressure-limit valve plunger (4), limiting valve spring (5), seal washer (7) and pressure-limit valve plug screw (6), pressure-limit valve plunger (4), limiting valve spring (5), seal washer (7) and pressure-limit valve plug screw (6) are installed in pressure-limit valve valve body (11) successively.
2. a kind of engine oil pressure-limiting valve of engine according to claim 1 is characterized in that described pressure-limit valve plug screw (4) stretches out pressure-limit valve valve body (11), and pressure-limit valve plug screw (4) is stretched in gear chamber cover (1) outside.
3. a kind of engine oil pressure-limiting valve of engine according to claim 1 and 2 is characterized in that being provided with in the described pressure-limit valve plunger (4) a plurality of spill ports (14).
4. a kind of engine oil pressure-limiting valve of engine according to claim 1 is characterized in that being provided with in the described pressure-limit valve valve body (11) a plurality of pressure-limit valve drainings hole.
5. a kind of engine oil pressure-limiting valve of engine according to claim 3 is characterized in that described spill port (14) aligns with pressure-limit valve draining hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820035795XU CN201198774Y (en) | 2008-04-30 | 2008-04-30 | Pressure-limiting valve of engine oil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820035795XU CN201198774Y (en) | 2008-04-30 | 2008-04-30 | Pressure-limiting valve of engine oil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201198774Y true CN201198774Y (en) | 2009-02-25 |
Family
ID=40449930
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200820035795XU Expired - Fee Related CN201198774Y (en) | 2008-04-30 | 2008-04-30 | Pressure-limiting valve of engine oil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201198774Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009132507A1 (en) * | 2008-04-30 | 2009-11-05 | 无锡开普机械有限公司 | Mobile oil pressure limiting valve for engine |
| CN102032020A (en) * | 2011-01-19 | 2011-04-27 | 潍柴动力股份有限公司 | Engine and engine oil pressure limiting valve thereof |
| CN103133080A (en) * | 2013-02-16 | 2013-06-05 | 洛阳拖拉机研究所有限公司 | Relief valve of engine oil pump and lubricating system thereof |
-
2008
- 2008-04-30 CN CNU200820035795XU patent/CN201198774Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009132507A1 (en) * | 2008-04-30 | 2009-11-05 | 无锡开普机械有限公司 | Mobile oil pressure limiting valve for engine |
| CN102032020A (en) * | 2011-01-19 | 2011-04-27 | 潍柴动力股份有限公司 | Engine and engine oil pressure limiting valve thereof |
| CN102032020B (en) * | 2011-01-19 | 2013-01-02 | 潍柴动力股份有限公司 | Engine and engine oil pressure limiting valve thereof |
| CN103133080A (en) * | 2013-02-16 | 2013-06-05 | 洛阳拖拉机研究所有限公司 | Relief valve of engine oil pump and lubricating system thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090225 Termination date: 20100430 |